安泰利克斯公司
US ˙ NasdaqCM ˙ US03676C1009

SecurityATEX / Anterix Inc.
InstitutionBlackRock, Inc.
Latest Disclosed Ownership934,649 shares
Ownership 4.98%
BlackRock, Inc. ownership in ATEX / Anterix Inc.

2026-04-27 - BlackRock, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 934,649 shares of Anterix Inc. (US:ATEX). This represents 4.98 percent ownership of the company. In their previous filing dated 2025-10-17 , BlackRock, Inc. had reported owning 950,842 shares, indicating a decrease of -1.70 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-04-27 2026-04-27 13G/A 950,842 934,649 -1.70 4.98 -2.35
2025-10-17 2025-10-17 13G/A 1,164,377 950,842 -18.34 5.10 -17.74
2024-01-29 2024-01-29 13G/A 1,288,731 1,164,377 -9.65 6.20 -8.82
2023-02-03 2023-02-03 13G 1,288,731 6.80

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F ANTERIX COM 03676C100 1,007,143 -11,132 -1.09 38,463 73.03 0.0001
2026-02-12 2025-12-31 13F ANTERIX COM 03676C100 1,018,275 -13,460 -1.30 22,229 0.35 0.0004
2025-11-12 2025-09-30 13F ANTERIX COM 03676C100 1,031,735 -108,744 -9.53 22,151 -24.28 0.0004
2025-08-12 2025-06-30 13F ANTERIX COM 03676C100 1,140,479 138,988 13.88 29,253 -20.19 0.0006
2025-05-02 2025-03-31 13F ANTERIX COM 03676C100 1,001,491 19,862 2.02 36,655 21.75 0.0008
2025-02-07 2024-12-31 13F ANTERIX COM 03676C100 981,629 -13,998 -1.41 30,107 -19.71 0.0006
2024-11-13 2024-09-30 13F ANTERIX COM 03676C100 995,627 -114,646 -10.33 37,495 -14.70 0.0008
2024-08-13 2024-06-30 13F ANTERIX COM 03676C100 1,110,273 -15,591 -1.38 43,956 16.16 0.0010
2024-05-10 2024-03-31 13F ANTERIX COM 03676C100 1,125,864 -38,513 -3.31 37,840 -2.47 0.0009
2024-02-13 2023-12-31 13F ANTERIX COM 03676C100 1,164,377 72,001 6.59 38,797 13.18 0.0010
2023-11-13 2023-09-30 13F ANTERIX COM 03676C100 1,092,376 -250,822 -18.67 34,279 -19.47 0.0010
2023-08-11 2023-06-30 13F ANTERIX COM 03676C100 1,343,198 18,811 1.42 42,566 -2.72 0.0012
2023-05-12 2023-03-31 13F ANTERIX COM 03676C100 1,324,387 35,656 2.77 43,758 5.55 0.0013
2023-02-13 2022-12-31 13F ANTERIX COM 03676C100 1,288,731 52,853 4.28 41,458 -6.09 0.0013
2022-11-14 2022-09-30 13F ANTERIX COM 03676C100 1,235,878 305,576 32.85 44,146 15.54 0.0015
2022-08-12 2022-06-30 13F ANTERIX COM 03676C100 930,302 27,805 3.08 38,207 -26.88 0.0012
2022-05-12 2022-03-31 13F ANTERIX COM 03676C100 902,497 -12,429 -1.36 52,256 -2.80 0.0014
2022-02-10 2021-12-31 13F ANTERIX COM 03676C100 914,926 74,613 8.88 53,761 5.40 0.0014
2021-11-09 2021-09-30 13F ANTERIX COM 03676C100 840,313 11,855 1.43 51,007 2.63 0.0014
2021-08-11 2021-06-30 13F ANTERIX COM 03676C100 828,458 -2,645 -0.32 49,701 26.80 0.0014
2021-05-07 2021-03-31 13F ANTERIX COM 03676C100 831,103 13,408 1.64 39,195 27.48 0.0012
2021-02-05 2020-12-31 13F ANTERIX COM 03676C100 817,695 41,992 5.41 30,746 21.18 0.0010
2020-11-06 2020-09-30 13F ANTERIX COM 03676C100 775,703 -147,762 -16.00 25,372 -39.40 0.0009
2020-08-14 2020-06-30 13F ANTERIX COM 03676C100 923,465 156,946 20.48 41,871 19.61 0.0017
2020-05-01 2020-03-31 13F ANTERIX COM 03676C100 766,519 -33,615 -4.20 35,007 1.26 0.0017
2020-02-13 2019-12-31 13F ANTERIX COM 03676C100 800,134 67,815 9.26 34,573 30.42 0.0013
2019-11-08 2019-09-30 13F ANTERIX COM 03676C100 732,319 70,460 10.65 26,509 -14.78 0.0011
2019-08-22 2019-06-30 13F/A-1 PDVWIRELESS COM 69290R104 661,859 -12,103 -1.80 31,107 31.28 0.0013
2019-08-13 2019-06-30 13F PDVWIRELESS COM 69290R104 661,859 -12,103 31,107
2019-05-09 2019-03-31 13F PDVWIRELESS COM 69290R104 673,962 11,859 1.79 23,696 -4.28 0.0011
2019-02-08 2018-12-31 13F PDVWIRELESS COM 69290R104 662,103 -45,919 -6.49 24,756 3.14 0.0012
2018-11-09 2018-09-30 13F PDVWIRELESS COM 69290R104 708,022 24,085 3.52 24,002 40.66 0.0010
2018-08-09 2018-06-30 13F PDVWIRELESS COM 69290R104 683,937 45,248 7.08 17,064 -10.50 0.0008
2018-05-09 2018-03-31 13F PDVWIRELESS COM 69290R104 638,689 -7,697 -1.19 19,065 -8.12 0.0009
2018-02-09 2017-12-31 13F PDVWIRELESS COM 69290R104 646,386 10,333 1.62 20,749 9.47 0.0010
2017-11-14 2017-09-30 13F PDVWIRELESS COM 69290R104 636,053 1,930 0.30 18,954 28.28 0.0010
2017-08-10 2017-06-30 13F PDVWIRELESS COM 69290R104 634,123 -29,200 -4.40 14,775 1.94 0.0008
2017-05-12 2017-03-31 13F PDVWIRELESS COM 69290R104 663,323 660,970 28,090.52 14,494 27,247.17 0.0008
2017-02-10 2016-12-31 13F PDVWIRELESS COM 69290R104 2,353 -139 -5.58 53 -7.02 0.0001
2016-11-08 2016-09-30 13F PDVWIRELESS COM 69290R104 2,492 -136 -5.18 57 0.00 0.0001
2016-08-10 2016-06-30 13F PDVWIRELESS COM 69290R104 2,628 1,738 195.28 57 83.87 0.0001
2016-05-10 2016-03-31 13F PDVWIRELESS COM 69290R104 890 583 189.90 31 287.50 0.0000
2016-02-11 2015-12-31 13F PDVWIRELESS COM 69290R104 307 307 8 0.0000
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.