BL / BlackLine, Inc. - SEC申報文件,年度報告,委任書

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US ˙ NasdaqGS ˙ US09239B1098

基本數據
LEI 529900P9N7PK9LV5EK56
CIK 1666134
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to BlackLine, Inc.
SEC Filings (Chronological Order)
本頁面提供了一個完整的、按時間順序排列的美國證券交易委員會(SEC)申報文件列表,不包括我們在其他地方提供的所有權申報。
May 8, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2026 BLACKLINE, INC. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 7, 2026 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number)

May 7, 2026 EX-10.2

AMENDMENT TO EMPLOYMENT AGREEMENT

Exhibit 10.2 AMENDMENT TO EMPLOYMENT AGREEMENT May 6, 2026 Dear Owen: As we’ve discussed, this letter agreement (this “Amendment”) amends your Employment Agreement (the “Original Employment Agreement”) with Blackline, Inc. (the “Company”), dated March 6, 2023. This Amendment is effective as the date of your signature below in accordance with Section 9(c) of the Original Employment Agreement. The s

May 7, 2026 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine

May 5, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2026 BLACKLINE, INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2026 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 5, 2026 EX-99.1

BlackLine Announces First Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces First Quarter Financial Results LOS ANGELES, May 05, 2026 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the first quarter ended March 31, 2026. “BlackLine delivered a solid first quarter with accelerating revenue growth, operating leverage, and momentum from our platform strategy,” said Owen Ryan, CEO of BlackLine. “We are d

March 25, 2026 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

March 25, 2026 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

March 17, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 13, 2026 BLACKLINE, INC. (Ex

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) March 13, 2026 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numb

March 10, 2026 EX-99.1

BlackLine Reaches Agreement with Engaged Capital and Strengthens Board with Addition of Two Independent Directors

EX-99.1 Exhibit 99.1 BlackLine Reaches Agreement with Engaged Capital and Strengthens Board with Addition of Two Independent Directors LOS ANGELES, CA, March 10, 2026 – BlackLine, Inc. (Nasdaq: BL) (“BlackLine” or the “Company”) today announced that it has appointed Storm Duncan and Megan Prichard to BlackLine’s Board of Directors in connection with a cooperation agreement with Engaged Capital, LL

March 10, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) March 8, 2026 BLACKLINE, INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) March 8, 2026 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numbe

March 10, 2026 EX-10.1

BlackLine, Inc. 21300 Victory Boulevard, 12th Floor Woodland Hills, California 91367

EX-10.1 Exhibit 10.1 BlackLine, Inc. 21300 Victory Boulevard, 12th Floor Woodland Hills, California 91367 March 9, 2026 Engaged Capital, LLC 610 Newport Center Drive, Suite 950 Newport Beach, CA 92660 Attn: Glenn W. Welling Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between (a) BlackLine, Inc. (“Company”) and (b) Engaged Capital, LLC (“Engaged Capital”) and each

February 26, 2026 EX-10.17

December 20, 2024

Exhibit 10.17 December 20, 2024 VIA EMAIL Stuart Van Houten Dear Stuart: BlackLine Systems, Inc. (“BlackLine”), located at 21300 Victory Blvd. 12th Floor, Woodland Hills, CA 91367, is pleased to make this offer of employment to you. Your employment will begin on or before February 17, 2025. You will hold the title of Chief Commercial Officer reporting to Owen Ryan, Co-CEO, and be expected to perfo

February 26, 2026 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, Inc

February 26, 2026 EX-10.15

April 1, 2024

Exhibit 10.15 April 1, 2024 VIA EMAIL Jimmy Duan Dear Jimmy: BlackLine Systems, Inc. (“BlackLine”), located at 21300 Victory Blvd. 12th Floor, Woodland Hills, CA 91367, is pleased to make this offer of employment to you. Your employment will begin on or before May 6, 2024. You will hold the title of Chief Customer Officer reporting to Owen Ryan, Co-CEO, and be expected to perform the job duties as

February 26, 2026 EX-21.1

Name of Subsidiary

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE COMPANY Name of Subsidiary Jurisdiction of Incorporation BlackLine Systems, Inc. California BlackLine Intermediate, Inc. Delaware BlackLine WL, LLC Delaware FourQ Systems Inc. Delaware FourQ Systems International LLC Delaware BlackLine Systems Pty Ltd. Australia BlackLine Systems, Ltd. Canada BlackLine Systems SARL France BlackLine Systems GmbH Germany Blac

February 26, 2026 EX-10.16

February 29, 2024

Exhibit 10.16 February 29, 2024 Updated: March 4, 2024 VIA EMAIL Jeremy Ung Dear Jeremy: BlackLine Systems, Inc. (“BlackLine”), located at 21300 Victory Blvd. 12th Floor, Woodland Hills, CA 91367, is pleased to make this offer of employment to you. Your employment will begin on or before April 15, 2024. You will hold the title of Chief Technology Officer reporting to Therese Tucker, Co-CEO, and be

February 26, 2026 EX-FILING FEES

Table 1: Newly Registered Securities

Calculation of Filing Fee Tables S-8 BLACKLINE, INC. Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Common Stock, $0.01 par value per share, reserved for issuance pursuant to the 2016 Equity Incentive Plan Other 2,994

February 26, 2026 S-8

As filed with the Securities and Exchange Commission on February 26, 2026

S-8 As filed with the Securities and Exchange Commission on February 26, 2026 Registration No.

February 26, 2026 EX-10.8

BlackLine, Inc. Change of Control and Severance Policy (as amended and restated through February 14, 2024)

Exhibit 10.8 BlackLine, Inc. Change of Control and Severance Policy (as amended and restated through February 14, 2024) This Change of Control and Severance Policy (the “Policy”) is designed to provide certain protections to a select group of key employees of BlackLine, Inc. (“BlackLine” or the “Company”) or any of its subsidiaries in connection with a change of control of BlackLine or in connecti

February 10, 2026 EX-99.1

BlackLine Announces Fourth Quarter and Full Year 2025 Financial Results

EXHIBIT 99.1 BlackLine Announces Fourth Quarter and Full Year 2025 Financial Results LOS ANGELES, Feb. 10, 2026 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the fourth quarter and full year ended December 31, 2025. “Our fourth-quarter performance, highlighted by record bookings, provides encouraging validation of the strategic transformation we initiated o

February 10, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 10, 2026 BLACKLINE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 10, 2026 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File

February 2, 2026 EX-99.1

BlackLine Confirms Receipt of Director Nominations No Stockholder Action Required at This Time

EX-99.1 Exhibit 99.1 BlackLine Confirms Receipt of Director Nominations No Stockholder Action Required at This Time LOS ANGELES – Feb. 2, 2026 – BlackLine (Nasdaq: BL) (“BlackLine” or the “Company”) today confirmed that Engaged Capital has submitted to the Company a notice of nomination of three director candidates to stand for election to the BlackLine Board of Directors at the Company’s 2026 Ann

February 2, 2026 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 2, 2026 BLACKLINE, INC. (

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 2, 2026 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Nu

February 2, 2026 DFAN14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☐ Filed by a Party other than the Registrant ☒ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

February 2, 2026 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 2, 2026 BLACKLINE, INC. (

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) February 2, 2026 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission

January 27, 2026 DFAN14A

DFAN14A

Opinion - Activist Spotlight Activist Engaged Capital is poised to shake up the board at BlackLine.

January 27, 2026 DFAN14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☐ Filed by a Party other than the Registrant ☒ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

January 20, 2026 DFAN14A

DFAN14A

January 20, 2026 DFAN14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☐ Filed by a Party other than the Registrant ☒ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

January 13, 2026 DFAN14A

EXHIBIT 1

Nov 24, 2025 8:00 AM Eastern Standard Time Engaged Capital Sends 220 Demand Letter to BlackLine, Inc.

January 13, 2026 DFAN14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☐ Filed by a Party other than the Registrant ☒ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

December 22, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 19, 2025 BLACKLINE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) December 19, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File N

December 22, 2025 EX-99.1

BlackLine Board Member Tom Unterman Announces Intention to Retire

EX-99.1 Exhibit 99.1 BlackLine Board Member Tom Unterman Announces Intention to Retire LOS ANGELES – December 22, 2025 – BlackLine (Nasdaq: BL) (“BlackLine” or the “Company”) today announced that Tom Unterman has informed the Company that he intends to retire and will not stand for re-election to the BlackLine Board of Directors at the Company’s next Annual Meeting of Stockholders in May 2026. Mr.

November 10, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 10, 2025 BLACKLINE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) November 10, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File N

November 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 Black

November 7, 2025 EX-10.1

Sincerely, /s/ Mika Yamamoto Mika Yamamoto Compensation Committee Chair

Exhibit 10.1 August 7, 2025 VIA EMAIL Therese Tucker Dear Therese: As we've agreed, in consideration of your founding and long dedication to service with BlackLine Systems, Inc. (“BlackLine”), we are pleased to offer you continued employment in the role of Founder, beginning on October 1, 2025. Your employment as Founder pursuant to this letter will begin on October 1, 2025. Effective as of the en

November 6, 2025 EX-99.1

BlackLine Announces Third Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Third Quarter Financial Results LOS ANGELES, Nov. 06, 2025 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the third quarter ended September 30, 2025. “BlackLine’s third-quarter results, with increasing revenue growth, solid margins, and strong free cash flow, demonstrate that our focus on improved execution is taking hold,” s

November 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2025 BLACKLINE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File N

September 22, 2025 144

144

144 0001299455 XXXXXXXX LIVE 0001666134 BLACKLINE, INC. 001-37924 21300 VICTORY BOULEVARD 12TH FLOOR WOODLAND HILLS CA 91367 818-223-9008 Unterman Thomas Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 910 50050.00 61887825 09/22/2025 NASDAQ Common 09/03/2013 Stock Option Exercise Issuer N 910 09/03/2013 Cash N The Etu Rustic Canyon Trust 21300 Victory Boulevar

September 9, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 4, 2025 BLACKLINE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) September 4, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File N

August 28, 2025 144

144

144 0001299455 XXXXXXXX LIVE 0001666134 BLACKLINE, INC. 001-37924 21300 VICTORY BOULEVARD 12TH FLOOR WOODLAND HILLS CA 91367 818-223-9008 Unterman Thomas Director Common Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917 910 50050.00 61887825 08/28/2025 NASDAQ Common 09/03/2013 Stock Option Exercise Issuer N 910 09/03/2013 Cash N The Etu Rustic Canyon Trust 21300 Victory Boulevar

August 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine,

August 5, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 30, 2025 BLACKLINE, INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 30, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numbe

August 5, 2025 EX-99.1

BlackLine Announces Second Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Second Quarter Financial Results LOS ANGELES, Aug. 05, 2025 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the second quarter ended June 30, 2025. “Our strong second quarter results demonstrate BlackLine's growing success, which is a direct outcome of our disciplined go-to-market execution and significant progress on the stra

August 5, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025 BLACKLINE, INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 5, 2025 EX-99.1

BlackLine Announces Co-CEO Transition and New Lead Independent Director Therese Tucker to transition from her role as Co-CEO and focus on her role as Founder. Owen Ryan will serve as CEO of BlackLine. David Henshall to serve as Lead Independent Direc

Exhibit 99.1 BlackLine Announces Co-CEO Transition and New Lead Independent Director Therese Tucker to transition from her role as Co-CEO and focus on her role as Founder. Owen Ryan will serve as CEO of BlackLine. David Henshall to serve as Lead Independent Director. LOS ANGELES – August 5, 2025 – BlackLine, Inc. (Nasdaq: BL) (“BlackLine” or the “Company”), the future-ready platform for the Office

July 28, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) July 24, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numbe

July 28, 2025 EX-99.1

BlackLine Appoints Greg Hughes to Board of Directors, Expanding Enterprise Software and Strategic Growth Expertise

Exhibit 99.1 BlackLine Appoints Greg Hughes to Board of Directors, Expanding Enterprise Software and Strategic Growth Expertise LOS ANGELES – July 28, 2025 – BlackLine, Inc. (Nasdaq: BL), the future-ready financial operations platform for the Office of the CFO, today announced the appointment of Greg Hughes to its Board of Directors effective July 25, 2025. A seasoned enterprise software executive

June 16, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 13, 2025 BLACKLINE, INC. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) June 13, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numbe

June 16, 2025 EX-99.1

BlackLine Appoints Former Deloitte Global Executive Sam Balaji to Board of Directors

Exhibit 99.1 BlackLine Appoints Former Deloitte Global Executive Sam Balaji to Board of Directors LOS ANGELES – June 16, 2025 – BlackLine, Inc. (Nasdaq: BL), the future-ready platform for the Office of the CFO, today announced the appointment of Sam Balaji to its Board of Directors, effective June 13, 2025. With more than three decades of global leadership experience scaling technology businesses,

May 13, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 8, 2025 BLACKLINE, INC. (Exact

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 8, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number)

May 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine

May 7, 2025 EX-10.2

2018 Employee Stock Purchase Plan, as amended February 12, 2025 (filed herewith)

Exhibit 10.2 BLACKLINE, INC. 2018 EMPLOYEE STOCK PURCHASE PLAN Amended February 12, 2025 1.Purpose. The purpose of the Plan is to provide employees of the Company and its Designated Companies with an opportunity to purchase Common Stock through accumulated Contributions. The Company intends for the Plan to have two components: a component that is intended to qualify as an “employee stock purchase

May 6, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Number

May 6, 2025 EX-99.1

BlackLine Announces First Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces First Quarter Financial Results LOS ANGELES, May 06, 2025 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the first quarter ended March 31, 2025. “BlackLine’s first quarter delivered solid results with bookings exceeding expectations, driven by improved execution along with continued margin expansion,” said Owen Ryan, Co-CEO o

March 27, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

March 27, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

March 10, 2025 EX-10.1

Cooperation Letter Agreement, dated March 9, 2025, between the Company, Scalar Gauge Fund, L.P. and certain other parties

EX-10.1 EXHIBIT 10.1 BlackLine, Inc. 21300 Victory Boulevard, 12th Floor Woodland Hills, California 91367 March 9, 2025 Scalar Gauge Fund, LP 8115 Preston Road, Suite 585 Dallas, Texas 75225 Attn: Sumit Gautam, Principal Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between (a) BlackLine, Inc. (“Company”) and (b) Scalar Gauge Fund, LP (“Scalar Gauge”) and each of t

March 10, 2025 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) March 9, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numbe

March 10, 2025 EX-99.1

BlackLine Appoints New Member to Board of Directors in Collaboration with Scalar Gauge Fund Company adds independent director as part of mutual cooperation agreement

Exhibit 99.1 Press Release BlackLine Appoints New Member to Board of Directors in Collaboration with Scalar Gauge Fund Company adds independent director as part of mutual cooperation agreement LOS ANGELES, CA, March 10, 2025 – BlackLine, Inc. (Nasdaq: BL) (“BlackLine” or the “Company”) today announced that it has entered into a cooperation agreement (the “agreement”) with Scalar Gauge Fund (“Scala

March 4, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) February 27, 2025 BLACKLINE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) February 27, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File N

March 4, 2025 EX-99.1

Mr. Owen Ryan

EX-99.1 Exhibit 99.1 Mr. Owen Ryan Chairman and Co-CEO Blackline, Inc. 21300 Victory Blvd Woodland Hills, CA 91367 Dear Owen- With a mix of emotions, I am writing to share that I intend to resign from the Blackline board of directors effective May 8th, 2025, so that I have more time to focus on my new position as CEO at Semrush. I have thoroughly enjoyed my time working with you and the other memb

February 21, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, Inc

February 21, 2025 S-8

As filed with the Securities and Exchange Commission on February 21, 2025

As filed with the Securities and Exchange Commission on February 21, 2025 Registration No.

February 21, 2025 EX-21.1

List of subsidiaries of the Company.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE COMPANY Name of Subsidiary Jurisdiction of Incorporation BlackLine Systems, Inc. California BlackLine Intermediate, Inc. Delaware FourQ Systems Inc. Delaware FourQ Systems International LLC Delaware BlackLine Systems Pty Ltd. Australia BlackLine Systems, Ltd. Canada BlackLine Systems S.A.R.L. France BlackLine Systems Germany GmbH Germany BlackLine Systems D

February 21, 2025 EX-19

BlackLine, Inc. Insider Trading Policy.

Exhibit 19 INSIDER TRADING POLICY Version 2.0 Effective January 21, 2025 INTRODUCTION Over the course of your involvement with BlackLine, Inc. (“BlackLine” or the “Company”), you may be provided with confidential information regarding many aspects of our business, as well as the businesses of our customers, vendors, and partners. Unauthorized disclosure or use of that information, including misuse

February 21, 2025 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) BlackLine, Inc. (Exact name of registrant as specified in its charter) Table 1 – Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity  Common Stock, $0.01 par val

February 19, 2025 8-K/A

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) November 4, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File

February 11, 2025 EX-99.1

BlackLine Announces Fourth Quarter and Full Year 2024 Financial Results

EXHIBIT 99.1 BlackLine Announces Fourth Quarter and Full Year 2024 Financial Results LOS ANGELES, Feb. 11, 2025 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the fourth quarter and full year ended December 31, 2024. “We believe our recent user conference and accelerating innovation are creating momentum for BlackLine,” said Owen Ryan, Co-CEO of BlackLine. “

February 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 11, 2025 BLACKLINE, INC.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 11, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File

January 13, 2025 EX-99.1

BlackLine Appoints Stuart Van Houten as Chief Commercial Officer Stuart Van Houten, Will Join BlackLine Effective February 17, 2025, and Succeed Mark Woodhams as Head of Global Sales Team BlackLine Expects Fourth Quarter and Full Year 2024 Revenue to

EXHIBIT 99.1 BlackLine Appoints Stuart Van Houten as Chief Commercial Officer Stuart Van Houten, Will Join BlackLine Effective February 17, 2025, and Succeed Mark Woodhams as Head of Global Sales Team BlackLine Expects Fourth Quarter and Full Year 2024 Revenue to Meet or Slightly Exceed High End of Guidance Range; Reaffirms Non-GAAP Operating Margin Guidance LOS ANGELES, Jan. 13, 2025 (GLOBE NEWSW

January 13, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 9, 2025 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Nu

November 19, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) November 17, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File N

November 12, 2024 SC 13G/A

BL / BlackLine, Inc. / FMR LLC Passive Investment

SC 13G/A 1 filing.txt SCHEDULE 13G Amendment No.1 BLACKLINE INC COMMON STOCK Cusip #09239B109 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #09239B109 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 5,428,479 Item 6: 0 Item 7: 5,444,308 Item 8: 0 Item 9: 5,444

November 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 Black

November 7, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File N

November 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 7, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File N

November 7, 2024 EX-99.1

BlackLine Announces Third Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Third Quarter Financial Results LOS ANGELES, Nov. 07, 2024 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the third quarter ended September 30, 2024. “BlackLine delivered another quarter of solid financial results, exceeding our financial guidance while achieving record free cash flow generation," said Owen Ryan, co-CEO of Bl

November 7, 2024 EX-99.1

BlackLine Announces the Planned Retirement of Chief Financial Officer and Names Successor Patrick Villanova, Chief Accounting Officer, to Succeed Mark Partin

EXHIBIT 99.1 BlackLine Announces the Planned Retirement of Chief Financial Officer and Names Successor Patrick Villanova, Chief Accounting Officer, to Succeed Mark Partin LOS ANGELES, Nov. 07, 2024 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced that after nearly 10 years as BlackLine’s Chief Financial Officer, Mark Partin has decided to retire, effective March 1, 2025. Patrick Vi

September 24, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) September 20, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File

September 24, 2024 EX-99.1

David Henshall Joins BlackLine Board of Directors Henshall brings significant experience in enterprise software and possesses unmatched expertise in finance, strategy, and technology development

Exhibit 99.1 David Henshall Joins BlackLine Board of Directors Henshall brings significant experience in enterprise software and possesses unmatched expertise in finance, strategy, and technology development LOS ANGELES, CA, September 24, 2024 – BlackLine (NASDAQ: BL), the future-ready platform for the Office of the CFO, today announced the appointment of David Henshall to its Board of Directors.

August 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine,

August 6, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 6, 2024 EX-99.1

BlackLine Announces Second Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Second Quarter Financial Results LOS ANGELES, Aug. 06, 2024 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the second quarter ended June 30, 2024. “BlackLine delivered solid results this quarter, exceeding our revenue and profitability expectations, while continuing to generate robust free cash flow,” said Owen Ryan, co-CEO o

May 24, 2024 EX-10.2

Form of Capped Call Confirmation.

Exhibit 10.2 [Dealer name and address] To: [COMPANY] From: [Dealer] Re: [Base][Additional] Capped Call Transaction Ref. No: []1 Date: May [], 2024 Dear Ladies and Gentlemen: The purpose of this communication (this “Confirmation”) is to set forth the terms and conditions of the above-referenced transaction entered into on the Trade Date specified below (the “Transaction”) between [Dealer] (“Dealer”

May 24, 2024 EX-99.1

-2-

Exhibit 99.1 BlackLine, Inc. Announces Proposed Private Offering of $500,000,000 of Convertible Senior Notes LOS ANGELES, May 21, 2024 — BlackLine, Inc. (Nasdaq: BL), today announced that it intends to offer, subject to market conditions and other factors, $500,000,000 aggregate principal amount of convertible senior notes due 2029 (the “notes”) in a private placement to qualified institutional bu

May 24, 2024 EX-10.1

Purchase Agreement, dated May 21, 2024, by and

Exhibit 10.1 $600,000,000 BLACKLINE INC. 1.00% CONVERTIBLE SENIOR NOTES DUE 2029 PURCHASE AGREEMENT May 21, 2024 May 21, 2024 Morgan Stanley & Co. LLC 1585 Broadway New York, New York 10036 Ladies and Gentlemen: BlackLine, Inc., a Delaware corporation (the “Company”), proposes to issue and sell to you (the “Initial Purchaser”), $600,000,000 principal amount of its 1.00% Convertible Senior Notes du

May 24, 2024 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported) May 21, 2024 BLACKLINE, INC. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number

May 24, 2024 EX-4.1

Indenture, dated May 24, 2024, between BlackLine, Inc. and U.S. Bank Trust Company, National Association.

Exhibit 4.1 BLACKLINE, INC. AND U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of May 24, 2024 1.00% Convertible Senior Notes due 2029 1 TABLE OF CONTENTS Article 1. Definitions 1 Section 1.01. Definitions 1 Section 1.02. References to Interest 13 Article 2. Issue, Description, Execution, Registration and Exchange of Notes 13 Section 2.01. Designation and Amount 13 Se

May 24, 2024 EX-99.2

BlackLine, Inc. Announces Upsize and Pricing of Offering of $600,000,000 of Convertible Senior Notes

Exhibit 99.2 BlackLine, Inc. Announces Upsize and Pricing of Offering of $600,000,000 of Convertible Senior Notes LOS ANGELES, May 22, 2024 — BlackLine, Inc. (Nasdaq: BL), today announced the pricing of $600,000,000 aggregate principal amount of 1.00% convertible senior notes due 2029 (the “notes”) in a private placement to qualified institutional buyers pursuant to Rule 144A under the Securities

May 10, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) May 9, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number)

May 8, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine

May 7, 2024 EX-99.1

BlackLine Announces First Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces First Quarter Financial Results LOS ANGELES, May 07, 2024 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the first quarter ended March 31, 2024. "BlackLine’s financial results this quarter exceeded our revenue and profitability expectations, demonstrating our ability to deliver profitable growth as we relentlessly drive our r

May 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 7, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Number

April 5, 2024 SC 13G/A

BL / BlackLine, Inc. / BlackRock Inc. Passive Investment

SC 13G/A 1 us09239b1098040424.txt us09239b1098040424.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 5) BLACKLINE, INC. - (Name of Issuer) Common Stock - (Title of Class of Securities) 09239B109 - (CUSIP Number) March 31, 2024 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to de

March 27, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

March 27, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

March 18, 2024 EX-99.1

Camille Drummond Joins BlackLine Board of Directors 36-year veteran of global oil, gas, and energy powerhouse bp brings extensive business process services expertise to help guide digital finance transformation leader

Exhibit 99.1 For Immediate Release   Camille Drummond Joins BlackLine Board of Directors 36-year veteran of global oil, gas, and energy powerhouse bp brings extensive business process services expertise to help guide digital finance transformation leader LOS ANGELES and LONDON – March 18, 2024 – BlackLine, Inc. (Nasdaq: BL) announced today that Camille Drummond has joined the digital finance trans

March 18, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) March 15, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numb

February 23, 2024 S-8

As filed with the Securities and Exchange Commission on February 23, 2024

As filed with the Securities and Exchange Commission on February 23, 2024 Registration No.

February 23, 2024 EX-10.29

Eighth Amendment to Office Lease, by and between the Company and Douglas Emmett 2008, LLC, dated May 26, 2021.

Exhibit 10.29 EIGHTH AMENDMENT TO OFFICE LEASE CERTAIN INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) THE TYPE THAT THE COMPANY TREATS AS PRIVATE OR CONFIDENTIAL, [***] INDICATES THAT THE INFORMATION HAS BEEN REDACTED. This Eighth Amendment to Office Lease (this “Eighth Amendment”), dated May 26, 2021, is made by and between DOUGLAS EMMETT 2008, LLC, a

February 23, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, Inc

February 23, 2024 EX-21.1

List of subsidiaries of the Company.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE COMPANY Name of Subsidiary Jurisdiction of Incorporation BlackLine Systems, Inc. California BlackLine Intermediate, Inc. Delaware Runbook Company, Inc. Delaware FourQ Systems Inc. Delaware FourQ Systems International LLC Delaware BlackLine Systems Pty Ltd. Australia BlackLine Systems, Ltd. Canada BlackLine Systems S.A.R.L. France BlackLine Systems Germany G

February 23, 2024 EX-97.1

Registrant’s Compensation Recovery Policy dated November 7, 2023.

Exhibit 97.1 BLACKLINE, INC. COMPENSATION RECOVERY POLICY As adopted on November 7, 2023 Blackline, Inc. (the “Company”) is committed to strong corporate governance. As part of this commitment, the Compensation Committee of the Company’s Board of Directors (the “Board”) has adopted this clawback policy called the Compensation Recovery Policy (the “Policy”). The Policy is intended to further the Co

February 23, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) BlackLine, Inc. (Exact name of registrant as specified in its charter) Table 1 – Newly Registered Securities Security  Type  Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.01 par val

February 13, 2024 SC 13G/A

BL / BlackLine, Inc. / Tucker Therese - SC 13G/A Passive Investment

SC 13G/A 1 d779333dsc13ga.htm SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 7)* BlackLine, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 09239B 109 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to desi

February 13, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2024 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File

February 13, 2024 SC 13G/A

BL / BlackLine, Inc. / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0444-blacklineinc.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 6)* Name of issuer: BlackLine Inc Title of Class of Securities: Common Stock CUSIP Number: 09239B109 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box to designate the rule

February 13, 2024 EX-99.1

BlackLine Announces Fourth Quarter and Full Year 2023 Financial Results

EXHIBIT 99.1 BlackLine Announces Fourth Quarter and Full Year 2023 Financial Results LOS ANGELES, Feb. 13, 2024 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the fourth quarter and full year ended December 31, 2023. "BlackLine closed the year with solid results, surpassing our expectations for both revenue and profitability, highlighting the powerful operat

February 9, 2024 SC 13G

BL / BlackLine, Inc. / FMR LLC Passive Investment

SC 13G 1 filing.txt SCHEDULE 13G Amendment No.0 BLACKLINE INC COMMON STOCK Cusip #09239B109 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: [x] Rule 13d-1(b) [ ] Rule 13d-1(c) [ ] Rule 13d-1(d) Cusip #09239B109 Item 1: Reporting Person - FMR LLC Item 2: (a) [ ] (b) [ ] Item 4: Delaware Item 5: 3,418,758 Item 6: 0 Item 7: 3,420,167 Item 8: 0 Item 9: 3,420,1

January 26, 2024 SC 13G/A

BL / BlackLine, Inc. / BlackRock Inc. Passive Investment

SC 13G/A 1 us09239b1098012624.txt us09239b1098012624.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 4) BLACKLINE, INC. - (Name of Issuer) Common Stock - (Title of Class of Securities) 09239B109 - (CUSIP Number) December 31, 2023 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

November 3, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 Black

November 2, 2023 EX-99.1

BlackLine Announces Third Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Third Quarter Financial Results LOS ANGELES, Nov. 02, 2023 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the third quarter ended September 30, 2023. “This was a busy quarter for BlackLine marked by solid financial results and progress against key initiatives,” said Owen Ryan, co-CEO of BlackLine. “While our work is far from

November 2, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 2, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File N

October 2, 2023 EX-99.1

William ‘Bill’ Wagner Joins BlackLine Board of Directors Former LogMeIn CEO brings extensive cloud, technology, and marketing expertise to help guide digital finance transformation leader

Exhibit 99.1 For Immediate Release William ‘Bill’ Wagner Joins BlackLine Board of Directors Former LogMeIn CEO brings extensive cloud, technology, and marketing expertise to help guide digital finance transformation leader LOS ANGELES – Oct. 2, 2023 – BlackLine, Inc. (Nasdaq: BL) announced today that William ‘Bill’ Wagner has joined the digital finance transformation leader’s board of directors, e

October 2, 2023 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) October 2, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Num

August 23, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) August 23, 2023 BLACKLINE, INC. (E

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) August 23, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Num

August 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine,

August 9, 2023 EX-10.1

Ninth Amendment to Office Lease, by and between the Company and Douglas Emmett 2008, LLC, dated June 15, 2023.

Exhibit 10.1 NINTH AMENDMENT TO OFFICE LEASE CERTAIN INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS BOTH (I) NOT MATERIAL AND (II) THE TYPE THAT THE COMPANY TREATS AS PRIVATE OR CONFIDENTIAL, [***] INDICATES THAT THE INFORMATION HAS BEEN REDACTED. This Ninth Amendment to Office Lease (this “Ninth Amendment”), dated June 15, 2023 is made by and between DOUGLAS EMMETT 2008, LLC, a Del

August 8, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 8, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 8, 2023 EX-99.1

BlackLine Announces Second Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Second Quarter Financial Results LOS ANGELES, Aug. 08, 2023 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the second quarter ended June 30, 2023. “BlackLine delivered total revenue and non-GAAP net income that exceeded our targets this quarter,” said Owen Ryan, co-CEO of BlackLine. “While pleased with these results, we expec

July 10, 2023 SC 13G/A

BL / BlackLine Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 5)* Name of issuer: BlackLine Inc. Title of Class of Securities: Common Stock CUSIP Number: 09239B109 Date of Event Which Requires Filing of this Statement: June 30, 2023 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule 13d

June 5, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) June 2, 2023 BLACKLINE, INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) June 2, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number

May 11, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) May 10, 2023 BLACKLINE, INC. (Exac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) May 10, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number

May 5, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine

May 4, 2023 EX-99.1

BlackLine Announces First Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces First Quarter Financial Results LOS ANGELES, May 04, 2023 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the first quarter ended March 31, 2023. "BlackLine's longstanding commitment to customer-driven success and market-leading innovation continue to support our differentiated market position and long-term opportunity," said

May 4, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 4, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Number

March 28, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ D

March 28, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy St

March 13, 2023 EX-3.1

Amended and Restated Bylaws.

EX-3.1 Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF BLACKLINE, INC. (as amended and restated on March 9, 2023) TABLE OF CONTENTS Page ARTICLE I—CORPORATE OFFICES 5 1.1 REGISTERED OFFICE 5 1.2 OTHER OFFICES 5 ARTICLE II—MEETINGS OF STOCKHOLDERS 5 2.1 PLACE OF MEETINGS 5 2.2 ANNUAL MEETING 5 2.3 SPECIAL MEETING 5 2.4 ADVANCE NOTICE PROCEDURES 5 2.5 NOTICE OF STOCKHOLDERS’ MEETINGS 12 2.6 QUORUM 13 2.7

March 13, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 9, 2023 BlackLine, Inc. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 9, 2023 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numbe

March 6, 2023 EX-10.3

Separation Agreement and Release between the Company and Marc Huffman, signed March 5, 2023.

EX-10.3 Exhibit 10.3 Execution Version RELEASE AGREEMENT This Release Agreement (“Agreement”) is made by and between Marc Huffman (“Executive”) and BlackLine, Inc. (the “Company”) (collectively referred to as the “Parties” or individually referred to as a “Party”). RECITALS WHEREAS, Executive is employed by the Company as its Chief Executive Officer; WHEREAS, Executive signed an Employment Offer L

March 6, 2023 EX-10.2

Employment Agreement between the Company and Owen Ryan, signed March 5, 2023.

EX-10.2 Exhibit 10.2 EMPLOYMENT AGREEMENT This Employment Agreement (the “Agreement”) is entered into by and among BlackLine, Inc. (the “Company”) and Owen Ryan (“Executive”) to be effective as of March 6, 2023 (the “Effective Date”). This Agreement supersedes all other employment agreements, offer letters, and change in control policy participation agreements between the Company and Executive. Su

March 6, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 5, 2023 BlackLine, Inc. (Exa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 5, 2023 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numbe

March 6, 2023 EX-10.1

Employment Agreement between the Company and Therese Tucker, signed March 5, 2023.

EX-10.1 Exhibit 10.1 EMPLOYMENT AGREEMENT This Employment Agreement (the “Agreement”) is entered into by and among BlackLine, Inc. (the “Company”) and Therese Tucker (“Executive”) to be effective as of March 6, 2023 (the “Effective Date”). This Agreement supersedes all other employment agreements, offer letters, and change in control policy participation agreements between the Company and Executiv

March 6, 2023 EX-99.1

BlackLine Announces Leadership Succession as it Drives Growth Strategy Therese Tucker and Owen Ryan Appointed Co-Chief Executive Officers Thomas Unterman Named Lead Independent Director

EX-99.1 Exhibit 99.1 For Immediate Release BlackLine Announces Leadership Succession as it Drives Growth Strategy Therese Tucker and Owen Ryan Appointed Co-Chief Executive Officers Thomas Unterman Named Lead Independent Director LOS ANGELES, March 6, 2023 — BlackLine, Inc. (Nasdaq: BL) announced today that its Board of Directors has appointed founder, director and former Chief Executive Officer, T

February 23, 2023 EX-21.1

List of subsidiaries of the Company.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE COMPANY Name of Subsidiary Jurisdiction of Incorporation BlackLine Systems, Inc. California FourQ Systems Inc. Connecticut BlackLine Intermediate, Inc. Delaware BlackLine CV, LLC Delaware BlackLine Coop, LLC Delaware Runbook Company, Inc. Delaware FourQ Systems Inc. Delaware FourQ Systems International LLC Delaware BlackLine Systems Pty Ltd. Australia Black

February 23, 2023 10-K

Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, Inc

February 23, 2023 S-8

As filed with the Securities and Exchange Commission on February 23, 2023

S-8 As filed with the Securities and Exchange Commission on February 23, 2023 Registration No.

February 23, 2023 EX-4.2

Description of Registrant’s Securities

Exhibit 4.2 DESCRIPTION OF THE COMPANY’S SECURITIES The following description of the capital stock of BlackLine, Inc. (“us,” “our,” “we” or the “Company”) is a summary of the rights of our common stock and certain provisions of our amended and restated certificate of incorporation and amended and restated bylaws currently in effect. This summary does not purport to be complete and is qualified in

February 23, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) BlackLine, Inc. (Exact name of registrant as specified in its charter) Table 1 – Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.01 par value

February 22, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) February 16, 2023 BlackLine, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) February 16, 2023 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File N

February 22, 2023 EX-3.1

Amended and Restated Bylaws of the Registrant.

EX-3.1 Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF BLACKLINE, INC. (as amended and restated on February 16, 2023) TABLE OF CONTENTS Page ARTICLE I - CORPORATE OFFICES 1 1.1 REGISTERED OFFICE 1 1.2 OTHER OFFICES 1 ARTICLE II - MEETINGS OF STOCKHOLDERS 1 2.1 PLACE OF MEETINGS 1 2.2 ANNUAL MEETING 1 2.3 SPECIAL MEETING 1 2.4 ADVANCE NOTICE PROCEDURES 2 2.5 NOTICE OF STOCKHOLDERS’ MEETINGS 10 2.6 QUORU

February 14, 2023 SC 13G/A

BL / Blackline Inc / KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC - NONE Passive Investment

SC 13G/A 1 doc1.htm NONE UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 03)* BLACKLINE, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 09239B109 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule purs

February 14, 2023 SC 13G/A

BL / Blackline Inc / Tucker Therese - SC 13G/A Passive Investment

SC 13G/A 1 d382864dsc13ga.htm SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 6)* BlackLine, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 09239B 109 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to desi

February 14, 2023 EX-99.1

AGREEMENT JOINT FILING OF SCHEDULE 13G

EX-99.1 2 ex991.htm EX-99.1 AGREEMENT JOINT FILING OF SCHEDULE 13G Kayne Anderson Rudnick Investment Management, LLC (an investment adviser registered under the Investment Advisers Act of 1940), and Virtus Investment Advisers, Inc. (an investment adviser registered under the Investment Advisers Act of 1940), hereby agree to file jointly the statement on Schedule 13G to which this Agreement is atta

February 14, 2023 EX-99.1

BlackLine Announces Fourth Quarter and Full Year Financial Results

EXHIBIT 99.1 BlackLine Announces Fourth Quarter and Full Year Financial Results LOS ANGELES, Feb. 14, 2023 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the fourth quarter and full year ended December 31, 2022. "BlackLine reported solid financial results this quarter, as we continued to deliver against our goal of driving profitable growth," said Marc Huffm

February 14, 2023 SC 13G

BL / Blackline Inc / CLEARLAKE CAPITAL GROUP, L.P. - SC 13G Passive Investment

SC 13G 1 brhc10047992sc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Blackline, Inc. (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 09239B109 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appr

February 14, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 14, 2023 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File

February 9, 2023 SC 13G/A

BL / Blackline Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 4)* Name of issuer: Blackline Inc. Title of Class of Securities: Common Stock CUSIP Number: 09239B109 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

February 1, 2023 SC 13G/A

BL / Blackline Inc / BlackRock Inc. Passive Investment

SC 13G/A 1 us09239b1098013123.txt us09239b1098013123.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 3) BLACKLINE, INC. - (Name of Issuer) Common Stock - (Title of Class of Securities) 09239B109 - (CUSIP Number) December 31, 2022 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to

January 3, 2023 EX-99.1

BlackLine Board Names Owen Ryan Chair; Adds Experienced Industry Leadership to Board of Directors Bruny Rios, CAO at Dell, and Amit Yoran, CEO and chairman at Tenable, bring extensive industry, digital finance transformation, compliance and cybersecu

Exhibit 99.1 For Immediate Release BlackLine Board Names Owen Ryan Chair; Adds Experienced Industry Leadership to Board of Directors Bruny Rios, CAO at Dell, and Amit Yoran, CEO and chairman at Tenable, bring extensive industry, digital finance transformation, compliance and cybersecurity experience to accounting automation software leader LOS ANGELES ? Jan. 3, 2023 ? BlackLine, Inc. (Nasdaq: BL)

January 3, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) December 30, 2022 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation or organization) (C

December 8, 2022 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) December 7, 2022 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Nu

November 4, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 Black

November 3, 2022 EX-99.1

BlackLine Announces Third Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Third Quarter Financial Results LOS ANGELES, Nov. 03, 2022 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the third quarter ended September 30, 2022. ?BlackLine reported solid financial results this quarter as customer demand for finance and accounting solutions that drive efficiency and automation remained healthy,? said Mar

November 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 3, 2022 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File N

August 5, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine,

August 4, 2022 EX-99.1

BlackLine Announces Second Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Second Quarter Financial Results LOS ANGELES, Aug. 04, 2022 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the second quarter ended June 30, 2022. "This was a solid quarter for BlackLine, as we delivered strong revenue growth combined with overall operating efficiency and profitability," said Marc Huffman, CEO of BlackLine. "

August 4, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2022 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Num

May 13, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) May 12, 2022 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number

May 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine

May 5, 2022 EX-99.1

BlackLine Announces First Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces First Quarter Financial Results LOS ANGELES, May 05, 2022 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the first quarter ended March 31, 2022. "BlackLine delivered an outstanding first quarter with strong performance that beat our revenue and income expectations," said Marc Huffman, CEO of BlackLine. "We are seeing a growin

May 5, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 5, 2022 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Number

March 25, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? ? ? Preliminary Proxy Statement ? ? ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)

March 25, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

March 24, 2022 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, I

February 25, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Tables Form S-8 (Form Type) BlackLine, Inc. (Exact name of registrant as specified in its charter) Table 1 ? Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.01 par value

February 25, 2022 EX-21.1

List of subsidiaries of the Company.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE COMPANY Name of Subsidiary Jurisdiction of Incorporation BlackLine Systems, Inc. California BlackLine Intermediate, Inc. Delaware BlackLine CV, LLC Delaware BlackLine Coop, LLC Delaware Runbook Company, Inc. Delaware BlackLine Systems Pty Ltd. Australia BlackLine Systems, Ltd. Canada BlackLine Systems S.a.r.l. France BlackLine Systems Germany GmbH Germany B

February 25, 2022 S-8

As filed with the Securities and Exchange Commission on February 25, 2022

As filed with the Securities and Exchange Commission on February 25, 2022 Registration No.

February 25, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, Inc

February 23, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) February 16, 2022 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation or organization) (C

February 11, 2022 SC 13G/A

BL / Blackline Inc / Tucker Therese - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* BlackLine, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 09239B 109 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sch

February 11, 2022 SC 13G/A

BL / Blackline Inc / KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC - NONE Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* BLACKLINE, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 09239B109 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedul

February 10, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 10, 2022 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File

February 10, 2022 EX-99.1

BlackLine Announces Fourth Quarter and Full Year Financial Results

EXHIBIT 99.1 BlackLine Announces Fourth Quarter and Full Year Financial Results LOS ANGELES, Feb. 10, 2022 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the fourth quarter and full-year ended December 31, 2021. Marc Huffman, CEO, commented, ?I am very pleased with our fourth quarter results as we executed our strategy and expanded our existing technology ca

February 9, 2022 SC 13G/A

BL / Blackline Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 3)* Name of issuer: Blackline Inc. Title of Class of Securities: Common Stock CUSIP Number: 09239B109 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

February 3, 2022 SC 13G/A

BL / Blackline Inc / BlackRock Inc. Passive Investment

us09239b1098020322.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 2) BLACKLINE, INC. - (Name of Issuer) Common Stock - (Title of Class of Securities) 09239B109 - (CUSIP Number) December 31, 2021 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

January 27, 2022 EX-99.1

BLACKLINE ACQUIRES FOURQ, REDEFINING INTERCOMPANY FINANCIAL MANAGEMENT Acquisition strengthens BlackLine’s intercompany accounting solutions, adding advanced tax and statutory reporting compliance capabilities to its financial operations management p

Exhibit 99.1 For Immediate Release BLACKLINE ACQUIRES FOURQ, REDEFINING INTERCOMPANY FINANCIAL MANAGEMENT Acquisition strengthens BlackLine?s intercompany accounting solutions, adding advanced tax and statutory reporting compliance capabilities to its financial operations management platform LOS ANGELES ? Jan. 27, 2022 ? Accounting automation software leader BlackLine, Inc. (Nasdaq: BL) announced

January 27, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) January 27, 2022 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation or organization) (Co

November 5, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 Black

November 4, 2021 EX-99.1

BlackLine Announces Third Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Third Quarter Financial Results LOS ANGELES, Nov. 04, 2021 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the third quarter ended September 30, 2021. Marc Huffman, CEO, commented, ?Our momentum continued in the third quarter driven by broad-based demand for our solutions and strong execution, resulting in another quarter of s

November 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2021 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File N

August 5, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine,

August 5, 2021 EX-99.1

BlackLine Announces Second Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Second Quarter Financial Results LOS ANGELES, Aug. 05, 2021 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the second quarter ended June 30, 2021. Marc Huffman, CEO, commented, ?We delivered an outstanding second quarter with strong performances across the business. Our results continue to build on our market leadership and t

August 5, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 5, 2021 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Num

May 25, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) May 13, 2021 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number

May 19, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) May 12, 2021 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation or organization) (Commis

May 7, 2021 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine

May 6, 2021 EX-99.1

BlackLine Announces First Quarter Financial Results

EX-99.1 2 exh991.htm PRESS RELEASE EXHIBIT 99.1 BlackLine Announces First Quarter Financial Results LOS ANGELES, May 06, 2021 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the first quarter ended March 31, 2021. Marc Huffman, CEO, commented, “We had a strong start to the year as companies increasingly prioritized digital finance transformation and turned to

May 6, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2021 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Number

April 21, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

April 19, 2021 EX-99.1

GLOBALLY RECOGNIZED INCLUSION AND DIVERSITY EXECUTIVE BARBARA WHYE JOINS BLACKLINE BOARD OF DIRECTORS Named one of Fortune’s 2020 ‘Most Powerful Women in Business’, Whye brings extensive experience fostering inclusion and diversity in tech to guide t

EX-99.1 Exhibit 99.1 GLOBALLY RECOGNIZED INCLUSION AND DIVERSITY EXECUTIVE BARBARA WHYE JOINS BLACKLINE BOARD OF DIRECTORS Named one of Fortune’s 2020 ‘Most Powerful Women in Business’, Whye brings extensive experience fostering inclusion and diversity in tech to guide the accounting automation software leader LOS ANGELES – April 19, 2021 – BlackLine, Inc. (Nasdaq: BL) announced today that Barbara

April 19, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) April 15, 2021 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation or organization) (Comm

March 26, 2021 DEF 14A

- DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? ? ? Preliminary Proxy Statement ? ? ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)

March 26, 2021 DEFA14A

- DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

March 15, 2021 EX-99.2

BlackLine, Inc. Announces Pricing of Offering of $1 Billion of Convertible Senior Notes

Exhibit 99.2 BlackLine, Inc. Announces Pricing of Offering of $1 Billion of Convertible Senior Notes LOS ANGELES, Calif. ? (BUSINESS WIRE) ? March 11, 2021 ? BlackLine, Inc. (Nasdaq: BL), a global leader in cloud-based accounting and finance software, today announced the pricing of $1 billion aggregate principal amount of 0.00% convertible senior notes due 2026 (the ?notes?) in a private placement

March 15, 2021 EX-10.1

Purchase Agreement, dated March 10, 2021, by and among BlackLine, Inc. and Morgan Stanley & Co. LLC, BofA Securities, Inc. and Credit Suisse Securities (USA) LLC, as representatives of the several initial purchasers named in Schedule I thereto.

Exhibit 10.1 Execution Version $1,000,000,000 BLACKLINE INC. 0.00% CONVERTIBLE SENIOR NOTES DUE 2026 PURCHASE AGREEMENT March 10, 2021 March 10, 2021 Morgan Stanley & Co. LLC BofA Securities, Inc. Credit Suisse Securities (USA) LLC c/o Morgan Stanley & Co. LLC 1585 Broadway New York, New York 10036 c/o BofA Securities, Inc. One Byant Park New York, New York 10036 c/o Credit Suisse Securities (USA)

March 15, 2021 EX-10.2

Form of Capped Call Confirmation.

Exhibit 10.2 [Dealer name and address] To: BlackLine, Inc. 21300 Victory Boulevard, 12th Floor Woodland Hills, California 91367 From: [Dealer] Re: [Base][Additional] Capped Call Transaction Ref. No: []1 Date: March [], 2021 Dear Ladies and Gentlemen: The purpose of this communication (this ?Confirmation?) is to set forth the terms and conditions of the above-referenced transaction entered into on

March 15, 2021 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 9, 2021 BLACKLINE, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Numb

March 15, 2021 EX-99.1

-2-

Exhibit 99.1 BlackLine, Inc. Announces Proposed Private Offering of $1 Billion of Convertible Senior Notes LOS ANGELES, Calif. ? (BUSINESS WIRE) ? March 9, 2021 ? BlackLine, Inc. (Nasdaq: BL), a global leader in cloud-based accounting and finance software, today announced that it intends to offer, subject to market conditions and other factors, $1 billion aggregate principal amount of convertible

March 15, 2021 EX-4.1

Indenture, dated March 15, 2021, between BlackLine, Inc. and U.S. Bank National Association.

Exhibit 4.1 BLACKLINE, INC. AND U.S. BANK NATIONAL ASSOCIATION, as Trustee INDENTURE Dated as of March 15, 2021 0.00% Convertible Senior Notes due 2026 TABLE OF CONTENTS Article 1. Definitions 1 Section 1.01. Definitions 1 Section 1.02. References to Interest 13 Article 2. Issue, Description, Execution, Registration and Exchange of Notes 13 Section 2.01. Designation and Amount 13 Section 2.02. For

February 25, 2021 S-8

- S-8

As filed with the Securities and Exchange Commission on February 25, 2021 Registration No.

February 25, 2021 EX-4.2

Description of Registrant’s Securities

Exhibit 4.2 DESCRIPTION OF THE COMPANY?S SECURITIES The following description of the capital stock of BlackLine, Inc. (?us,? ?our,? ?we? or the ?Company?) is a summary of the rights of our common stock and certain provisions of our amended and restated certificate of incorporation and amended and restated bylaws currently in effect. This summary does not purport to be complete and is qualified in

February 25, 2021 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, Inc

February 25, 2021 EX-21.1

List of subsidiaries of the Company.

Exhibit 21.1 LIST OF SUBSIDIARIES OF THE COMPANY Name of Subsidiary Jurisdiction of Incorporation BlackLine Systems, Inc. California BlackLine Intermediate, Inc. Delaware BlackLine CV, LLC Delaware BlackLine Coop, LLC Delaware Rimilia, Inc. Delaware Runbook Inc. Delaware BlackLine Systems Pty Ltd. Australia BlackLine Systems, Ltd. Canada Rimilia Canada Ltd. Canada BlackLine Systems S.a.r.l. France

February 16, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 01)* BLACKLINE, INC. (Name of Issuer) Common Stock (Title of Class of Securities) (CUSIP Number) December 31

Schedule 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 01)* BLACKLINE, INC. (Name of Issuer) Common Stock (Title of Class of Securities) 09239B109 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whic

February 16, 2021 EX-1.2

AGREEMENT JOINT FILING OF SCHEDULE 13G

AGREEMENT JOINT FILING OF SCHEDULE 13G Kayne Anderson Rudnick Investment Management, LLC (an investment adviser registered under the Investment Advisers Act of 1940), and Virtus Investment Advisers, Inc.

February 12, 2021 SC 13G/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 4)* BlackLine, Inc. (Name of Issuer) COMMON STOCK, $0.01 PAR VALUE PER SHARE (Title of Class of Securities)

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 4)* BlackLine, Inc. (Name of Issuer) COMMON STOCK, $0.01 PAR VALUE PER SHARE (Title of Class of Securities) 09239B 109 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate th

February 12, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* BlackLine, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 09239B 109 (CUSIP Numb

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 4)* BlackLine, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 09239B 109 (CUSIP Number) December 31, 2020 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this S

February 11, 2021 EX-99.1

BlackLine Announces Fourth Quarter and Full Year Financial Results

EXHIBIT 99.1 BlackLine Announces Fourth Quarter and Full Year Financial Results LOS ANGELES, Calif., Feb. 11, 2021 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the fourth quarter and full-year ended December 31, 2020. Marc Huffman, CEO, commented, “I am incredibly proud of what BlackLine has been able to accomplish in 2020 as we continued to drive growth,

February 11, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 11, 2021 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File

February 10, 2021 SC 13G/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)*

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 2)* Name of issuer: Blackline Inc. Title of Class of Securities: Common Stock CUSIP Number: 09239B109 Date of Event Which Requires Filing of this Statement: December 31, 2020 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ☒ Rule

February 5, 2021 SC 13G/A

SC 13G/A

us09239b1098020421.txt SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No: 1) BLACKLINE, INC. - (Name of Issuer) Common Stock - (Title of Class of Securities) 09239B109 - (CUSIP Number) December 31, 2020 - (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to wh

December 31, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) December 23, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File N

December 14, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) December 8, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Nu

November 9, 2020 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 Black

October 29, 2020 EX-99.1

Blackline Announces Third Quarter Financial Results

EXHIBIT 99.1 Blackline Announces Third Quarter Financial Results LOS ANGELES, Oct. 29, 2020 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the third quarter ended September 30, 2020. Therese Tucker, Founder and CEO, commented, “BlackLine delivered strong third quarter results as the demand environment continued to steadily improve. The momentum we are experi

October 29, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 29, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File N

October 2, 2020 EX-99.1

BLACKLINE ACQUIRES RIMILIA TO ADD AI-POWERED ACCOUNTS RECEIVABLE AUTOMATION TO MODERN ACCOUNTING PLATFORM Acquisition expands BlackLine’s position as an indispensable automation platform for the Office of the Controller and increases BlackLine’s tota

EX-99.1 Exhibit 99.1 For Immediate Release BLACKLINE ACQUIRES RIMILIA TO ADD AI-POWERED ACCOUNTS RECEIVABLE AUTOMATION TO MODERN ACCOUNTING PLATFORM Acquisition expands BlackLine’s position as an indispensable automation platform for the Office of the Controller and increases BlackLine’s total addressable market LOS ANGELES AND LONDON – Oct. 2, 2020 – BlackLine, Inc. (Nasdaq: BL), a leader in acco

October 2, 2020 8-K

Regulation FD Disclosure, Financial Statements and Exhibits - 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) October 2, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Num

August 7, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine,

August 6, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Num

August 6, 2020 EX-99.1

BLACKLINE REVEALS CEO SUCCESSION PLAN President & COO Marc Huffman appointed CEO as of Jan. 1st, 2021; Founder Therese Tucker to serve as executive chair

EX-99.1 Exhibit 99.1 BLACKLINE REVEALS CEO SUCCESSION PLAN President & COO Marc Huffman appointed CEO as of Jan. 1st, 2021; Founder Therese Tucker to serve as executive chair LOS ANGELES – Aug. 6, 2020 – Accounting automation software leader BlackLine, Inc. (Nasdaq: BL) today announced that the board of directors has elected Marc Huffman as chief executive officer, effective January 1st, 2021. Mr.

August 6, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) August 6, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Numb

August 6, 2020 EX-99.1

BlackLine Announces Second Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces Second Quarter Financial Results LOS ANGELES, Aug. 06, 2020 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the second quarter ended June 30, 2020. Therese Tucker, Founder and CEO, commented, “We posted better than expected Q2 results as the demand environment improved in the quarter and companies around the globe once again b

July 2, 2020 SC 13G/A

BL / BlackLine, Inc. / DF DENT & CO INC - DF DENT AND COMPANY BLACK LINE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No.

May 18, 2020 LETTER

LETTER

United States securities and exchange commission logo May 18, 2020 Mark Partin Chief Financial Officer Blackline, Inc.

May 18, 2020 TEXT-EXTRACT

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United States securities and exchange commission logo May 18, 2020 Mark Partin Chief Financial Officer Blackline, Inc.

May 11, 2020 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (date of earliest event reported) May 6, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation) (Commission File Number)

May 6, 2020 10-Q

Quarterly Report - 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-37924 BlackLine

May 6, 2020 CORRESP

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May 6, 2020 Division of Corporation Finance Office of Technology U.S. Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-3720 Attention:Kathryn Jacobson Robert Littlepage RE: BlackLine, Inc. December 31, 2019 Form 10-K Filing Date: February 27, 2020 File No. 001-37924 Ladies and Gentlemen: We are responding to the comment of the staff (the “Staff”) of the Securities and E

April 30, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 30, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File Num

April 30, 2020 EX-99.1

BlackLine Announces First Quarter Financial Results

EXHIBIT 99.1 BlackLine Announces First Quarter Financial Results LOS ANGELES, April 30, 2020 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the first quarter ended March 31, 2020. Therese Tucker, Founder and CEO, commented, “We delivered strong first quarter results despite the impact of the slowdown from COVID-19 starting in March. I am extremely proud of o

April 23, 2020 TEXT-EXTRACT

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April 22, 2020 Mark Partin Chief Financial Officer Blackline, Inc. 21300 Victory Boulevard, 12th Floor Woodland Hills, CA 91367 Re: Blackline, Inc. Form 10-K for the Year Ended December 31, 2019 Filed February 27, 2020 File No. 001-37924 Dear Mr. Partin: We have reviewed your filing and have the following comment. In our comment, we ask you to provide us with information so we may better understan

April 23, 2020 LETTER

LETTER

April 22, 2020 Mark Partin Chief Financial Officer Blackline, Inc. 21300 Victory Boulevard, 12th Floor Woodland Hills, CA 91367 Re: Blackline, Inc. Form 10-K for the Year Ended December 31, 2019 Filed February 27, 2020 File No. 001-37924 Dear Mr. Partin: We have reviewed your filing and have the following comment. In our comment, we ask you to provide us with information so we may better understan

March 24, 2020 DEFA14A

BL / BlackLine, Inc. DEFA14A - - DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

March 24, 2020 DEF 14A

BL / BlackLine, Inc. DEF 14A - - DEF 14A

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE SECURITIES EXCHANGE ACT OF 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant o Check the appropriate box: o Preliminary Proxy Statement o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

March 16, 2020 EX-99.1

MICROSOFT ARTIFICIAL INTELLIGENCE EXECUTIVE SOPHIA VELASTEGUI JOINS BLACKLINE BOARD OF DIRECTORS Software and emerging technology veteran to bring Microsoft, Google and Apple experience to BlackLine

EX-99.1 Exhibit 99.1 For Immediate Release MICROSOFT ARTIFICIAL INTELLIGENCE EXECUTIVE SOPHIA VELASTEGUI JOINS BLACKLINE BOARD OF DIRECTORS Software and emerging technology veteran to bring Microsoft, Google and Apple experience to BlackLine LOS ANGELES – March 16, 2020 – BlackLine, Inc. (Nasdaq: BL) announced today that Sophia Velastegui of Microsoft has joined the accounting automation software

March 16, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) March 13, 2020 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation or organization) (Comm

February 27, 2020 10-K

Annual Report - 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-37924 BlackLine, Inc

February 27, 2020 S-8

As filed with the Securities and Exchange Commission on February 27, 2020

As filed with the Securities and Exchange Commission on February 27, 2020 Registration No.

February 27, 2020 EX-4.2

Description of Company’s Securities

Exhibit 4.2 DESCRIPTION OF THE COMPANY’S SECURITIES The following description of the capital stock of BlackLine, Inc. (“us,” “our,” “we” or the “Company”) is a summary of the rights of our common stock and certain provisions of our amended and restated certificate of incorporation and amended and restated bylaws currently in effect. This summary does not purport to be complete and is qualified in

February 27, 2020 EX-21.1

List of subsidiaries of the Company.

EXHIBIT 21.1 LIST OF SUBSIDIARIES OF THE COMPANY Name of Subsidiary Jurisdiction of Incorporation BlackLine Systems, Inc. California BlackLine Intermediate, Inc. Delaware BlackLine CV, LLC Delaware BlackLine Coop, LLC Delaware Runbook Inc. Delaware BlackLine Systems Pty Ltd. Australia BlackLine Systems, Ltd. Canada BlackLine Systems S.a r.l. France BlackLine Systems Germany Gmb H Germany BlackLine

February 25, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported) February 20, 2020 BlackLine, Inc. (Exact name of Registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or other jurisdiction of incorporation or organization) (C

February 25, 2020 EX-99.1

BLACKLINE NAMES MARC HUFFMAN PRESIDENT Cloud accounting software veteran also nominated to join BlackLine’s board of directors

EX-99.1 Exhibit 99.1 For Immediate Release BLACKLINE NAMES MARC HUFFMAN PRESIDENT Cloud accounting software veteran also nominated to join BlackLine’s board of directors LOS ANGELES – Feb. 25, 2020 – BlackLine, Inc. (Nasdaq: BL) today announced that the board of directors has promoted Marc Huffman to president, effective immediately. In this expanded role, he will now serve as president and chief

February 14, 2020 SC 13G/A

BL / BlackLine, Inc. / Tucker Therese - SC 13G/A Passive Investment

SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* BlackLine, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 09239B 109 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

February 14, 2020 SC 13G/A

BL / BlackLine, Inc. / Spanicciati Mario - SC 13G/A Passive Investment

SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* BlackLine, Inc. (Name of Issuer) Common Stock, $0.01 par value (Title of Class of Securities) 09239B 109 (CUSIP Number) December 31, 2019 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

February 13, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 13, 2020 BLACKLINE, INC. (Exact name of registrant as specified in its charter) Delaware 001-37924 46-3354276 (State or Other Jurisdiction of Incorporation) (Commission File

February 13, 2020 EX-99.1

BlackLine Announces Fourth Quarter and Full Year Financial Results

EXHIBIT 99.1 BlackLine Announces Fourth Quarter and Full Year Financial Results LOS ANGELES, Feb. 13, 2020 (GLOBE NEWSWIRE) - BlackLine, Inc. (Nasdaq: BL), today announced financial results for the fourth quarter and full year ended December 31, 2019. Therese Tucker, Founder and CEO, commented, “In the fourth quarter, we continued to see healthy global demand from companies investing in digital tr

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