| 已發行股份 | 87,873,639 shares |
| 內部人士股份 | 4,767,749 shares |
| 內部持股 | 5.43 % |
| 所有內部人士 | 61 |
內部人士情緒分數
「內部人士情緒分數」用於查找被公司內部人士購入的公司。
它是一個複雜的多因素量化模型的結果，該模型能夠辨識具有最高內部人士累積持有水平的公司。該評分模型結合了內部人士在過去90天內購買的淨數量、總購買股份佔流通股比例，以及內部人士擁有的總股份的指標。該分數的範圍從0到100，數值越高表示相對於同行業而言具有更高程度的內部人士持股水平，50為平均值。
更新頻率：每日
高管情緒分數
「高管情緒分數」用於查找被公司管理層購入的公司。
根據定義，公司高管是公司內部人士，但與其他內部人士（10%的股東和董事會成員）不同，公司高管每天在公司工作，而且他們使用自己的資金進行交易。（10%的股東和董事會成員通常是基金經理，管理著其他人的資金。）因此，公司高管進行的內幕交易更為重要性，應該被適當地重視和關注。
如同「內部人士情緒分數」，「高管情緒分數」也是一個複雜的多因素量化模型的計算結果，該模型能夠辨識具有最高高管累積持有水平的公司。
更新頻率：每日
關鍵內部人士指標
此表格顯示了公司在各種內部人士指標上的排名。百分位數排名顯示了這家公司在美國市場與其他公司相比的表現。排名越高表明公司所處狀況越好。
舉例來說，一般認為內部人士的買入是一個積極的指標，因此具有更多內部人士買入的公司將排名高於那些內部人士買入較少（甚至有內部人士賣出）的公司。
內幕交易圖表
以下圖表顯示了Verastem, Inc.內部人士交易。內部人士包括公司的高管、董事或重要投資者。一般而言，基於內幕、非公開信息進行交易是非法的。這並不意味著他們在自己的公司進行任何交易都是非法的。但是，他們必須透過Form 4向美國證券交易委員會（SEC）報告所有交易。
內部人員名單及盈利指標
這張表格顯示已知的內部人員名單，從向SEC披露的申報文件中自動生成。除了姓名、最近的職稱和董事、高管或10%擁有人的標誌外，我們還提供了最新披露的持股信息。此外，我們盡可能提供內部人的歷史交易表現。歷史交易表現是內部人士實際進行的公開市場購買交易表現的加權平均值。有關此計算方式的更多資訊，請查看YouTube網絡研討會。
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| 內部人士 | 平均收益（%） | 持股 數量 |
分拆 調整 |
|---|---|---|---|
| Richard Aldrich Director - [D] | 408,142 | 34,012 | |
| Michael P Bailey Director - [D] | 108,000 | 108,000 | |
| Timothy J Barberich Director - [D] | 218,000 | 18,167 | |
|
Bvf Partners L P/il
10% Owner -
|
994,353 | 82,863 | |
|
Bvp Vii Special Opportunity Fund Lp
Director, 10% Owner -
[D]
|
1,995,237 | 166,270 | |
| Gregory Berk | 150,000 | ||
|
Bessemer Venture Partners VII Institutional L.P.
Director, 10% Owner -
[D]
|
1,995,237 | 166,270 | |
|
Bessemer Venture Partners VII L.P.
Director, 10% Owner -
[D]
|
1,995,237 | 166,270 | |
| Bloom Steven H. Chief Strategy Officer - [O] | 3,500 | 292 | |
| Bunn Paul A. Director - [D] | 44,333 | 44,333 | |
|
Chp Iii Lp
10% Owner -
|
2,329,121 | 194,093 | |
|
CHP III Management, L.L.C.
10% Owner -
|
2,234,126 | 186,177 | |
| John K Clarke Director - [D] | 2,329,121 | 194,093 | |
| Daniel Calkins Chief Financial Officer - [O] | 121,327 | 121,327 | |
| Joseph Chiapponi Vice President of Finance - [O] | 13,004 | 1,084 | |
| Gina Consylman | 35,342 | ||
|
Deer Management Co. LLC
Director, 10% Owner -
[D]
|
12,500 | 166,270 | |
|
Deer VII & Co. L.P.
Director, 10% Owner -
[D]
|
1,995,237 | 166,270 | |
|
Deer VII & Co. Ltd.
Director, 10% Owner -
[D]
|
1,995,237 | 166,270 | |
| Paul A Friedman Director - [D] | 3,000 | 250 |
| 內部人士 | 平均收益（%） | 持股 數量 |
分拆 調整 |
|---|---|---|---|
| Julie B Feder | 5,000 | ||
| Robert Forrester President and CEO, Director - [D] [O] | 9,000 | 750 | |
| Ansbert Gadicke Director - [D] | 3,740 | 312 | |
| John B Green Chief Financial Officer - [O] | 2,500 | 208 | |
| Gagnon Robert E. Director - [D] | 41,678 | 41,678 | |
|
Piyush Gupta
10% Owner -
|
442,857 | 36,905 | |
| Joanna Horobin Chief Medical Officer - [O] | 750 | 62 | |
| John Johnson Director - [D] | 52,666 | 52,666 | |
| Anil Kapur Director - [D] | 52,666 | 52,666 | |
| Michael Kauffman Director - [D] | 8,666 | 8,666 | |
|
Peter Kolchinsky
10% Owner -
|
16,142,051 | 1,345,171 | |
| Stephen Kraus Director - [D] | 0 | 0 | |
|
Mark N Lampert
10% Owner -
|
994,353 | 82,863 | |
|
Eric S Lander
10% Owner -
|
358,892 | 29,908 | |
| Alison Frances Lawton Director - [D] | 2,500 | 208 | |
| Le NgocDiep T. MD, PhD | 70,000 | ||
| Joseph M Lobacki Executive VP & CCO - [O] | 10,700 | 892 | |
|
Longwood Fund, L.P.
10% Owner -
|
1,919,898 | 159,992 | |
| Mpm Asset Management Investors Bv5 Llc - | 2,033,333 | 169,444 | |
| Mpm Bioventures V Llc - | 2,033,333 |
| 內部人士 | 平均收益（%） | 持股 數量 |
分拆 調整 |
|---|---|---|---|
| Frank Neumann Chief Medical Officer - [O] | 150,000 | 12,500 | |
| Jonathan Pachter VP, Head of Research - [O] | 62,249 | 5,187 | |
| Dan Paterson President and CEO, Director - [D] [O] | 612,113 | 612,113 | |
| Phanstiel S. Louise Director - [D] | 26,500 | 2,208 | |
|
Ra Capital Management, Llc
10% Owner -
|
16,142,051 | 1,345,171 | |
|
RA Capital Healthcare Fund LP
10% Owner -
|
16,142,051 | 1,345,171 | |
| Michelle Robertson Director - [D] | 52,666 | 52,666 | |
|
Ridgeback Capital Investments L.P.
10% Owner -
|
10,068,243 | 839,020 | |
|
Ridgeback Capital Investments Ltd.
10% Owner -
|
10,068,243 | 839,020 | |
|
Ridgeback Capital Management LP
10% Owner -
|
10,068,243 | 839,020 | |
| Matthew Ros Chief Operating Officer - [O] | 50,000 | 50,000 | |
| Eric K Rowinsky Director - [D] | 52,666 | 52,666 | |
| Stephen A Sherwin Director - [D] | 2,500 | 208 | |
|
Shah Rajeev M.
10% Owner -
|
16,142,051 | 1,345,171 | |
| Monica Singh General Counsel - [O] | 2,000 | 167 | |
| Brian M Stuglik Director - [D] | 137,147 | 137,147 | |
| Henri A Termeer Director - [D] | 14,000 | 1,167 | |
| Karin Anna Tollefson Director - [D] | 52,666 | 52,666 | |
|
Robert A Weinberg
10% Owner -
|
363,442 | 30,287 | |
| Bruce Wendel | 25,000 | ||
| Christoph H Westphal Executive Chairman, Director - [D] [O] | 665,224 | 55,435 |
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追蹤內部人士買入記錄 - 短期收益分析
在這一部分，我們分析了在 VSTM / Verastem, Inc. 中進行的每筆非計劃的公開市場內部人士購買的盈利情況。這種分析有助於了解內部人士是否持續產生異常的回報，以及是否值得跟踪。該分析基於每筆交易後一年的情況， 結果僅為理論值。 .
以下表格顯示了最近的自動交易計劃之外的公開市場購買。
經調整價格 已按拆股調整。 經調整股數 已按拆股調整。
追蹤內部人士賣出記錄 - 短期虧損分析
在這一部分，我們分析了在 VSTM / Verastem, Inc. 中進行的每筆非計劃的公開市場內部人士賣出所達成的短期虧損規避。如果存在持續的虧損規避模式，可能表明未來的內部人士賣出交易預示著價格的下跌。該分析基於每筆交易後一年的情況， 結果僅為理論值。 .
以下表格顯示了最近的自動交易計劃之外的公開市場購買。
經調整價格 已按拆股調整。 經調整股數 已按拆股調整。
交易歷史
點擊連結圖示即可查看完整的交易記錄。作為 10b5-1 自動交易計畫的一部分進行報告的交易，將在標記為 10b-5 的欄位中顯示 X。
| 呈報 日期 |
交易 日期 |
表格 | 內部人士 | 證券代碼 | 證券種類 | 代碼 | 直接 | 行使 價格 |
單位 價格 |
股數 變化 |
價值 變化 (1K) |
剩餘 期權 |
剩餘 股份 |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-05-27 | 2026-05-21 | 4 | BAILEY MICHAEL P | VSTM | Common Stock | D | 108,000 | 108,000 | ||||||
| 2026-05-26 | 2026-05-21 | 4 | JOHNSON JOHN | VSTM | Common Stock | D | 36,000 | 52,666 | ||||||
| 2026-05-26 | 2026-05-21 | 4 | Bunn Paul A. | VSTM | Common Stock | D | 36,000 | 44,333 | ||||||
| 2026-05-26 | 2026-05-21 | 4 | Kapur Anil | VSTM | Common Stock | D | 36,000 | 52,666 | ||||||
| 2026-05-26 | 2026-05-21 | 4 | ROBERTSON MICHELLE | VSTM | Common Stock | D | 36,000 | 52,666 | ||||||
| 2026-05-26 | 2026-05-21 | 4 | Rowinsky Eric K | VSTM | Common Stock | D | 36,000 | 52,666 | ||||||
| 2026-05-26 | 2026-05-21 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 36,000 | 137,147 | ||||||
| 2026-05-26 | 2026-05-21 | 4 | Tollefson Karin Anna | VSTM | Common Stock | D | 36,000 | 52,666 | ||||||
| 2026-05-06 | 2026-05-04 | 4 | Paterson Dan | VSTM | Common Stock | D | 5.8200 | -806 | -5 | 612,113 | ||||
| 2026-03-23 | 2026-03-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 5.7400 | -57 | -0 | 121,327 | ||||
| 2026-02-05 | 2026-02-04 | 4 | Paterson Dan | VSTM | Common Stock | D | 6.6900 | -970 | -6 | 612,919 | ||||
| 2026-01-23 | 2026-01-21 | 4 | Calkins Daniel | VSTM | Common Stock | D | 16,665 | 121,384 | ||||||
| 2026-01-23 | 2026-01-21 | 4 | Paterson Dan | VSTM | Common Stock | D | 213,785 | 613,889 | ||||||
| 2026-01-14 | 2026-01-12 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.1600 | -10,321 | -74 | 400,104 | ||||
| 2026-01-14 | 2026-01-12 | 4 | Calkins Daniel | VSTM | Common Stock | D | 7.1600 | -5,039 | -36 | 104,719 | ||||
| 2025-12-29 | 2025-12-24 | 4 | Calkins Daniel | VSTM | Common Stock | D | 7.8600 | -80 | -1 | 109,758 | ||||
| 2025-12-18 | 2025-12-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 9.1400 | -592 | -5 | 101,147 | ||||
| 2025-12-18 | 2025-12-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 9.1400 | -393 | -4 | 410,425 | ||||
| 2025-12-18 | 2025-12-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 9.1400 | -283 | -3 | 41,678 | ||||
| 2025-12-12 | 2025-12-11 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0000 | -2,000 | -20 | 410,818 | ||||
| 2025-12-12 | 2025-12-10 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0700 | -2,000 | -20 | 412,818 | ||||
| 2025-12-09 | 2025-12-09 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.2500 | -2,000 | -20 | 414,818 | ||||
| 2025-12-09 | 2025-12-08 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.5000 | -2,000 | -21 | 416,818 | ||||
| 2025-12-09 | 2025-12-05 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.6100 | -2,000 | -21 | 418,818 | ||||
| 2025-12-04 | 2025-12-04 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0000 | -2,000 | -20 | 420,818 | ||||
| 2025-12-04 | 2025-12-03 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0000 | -2,000 | -20 | 422,818 | ||||
| 2025-12-04 | 2025-12-02 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.3200 | -2,000 | -21 | 424,818 | ||||
| 2025-12-01 | 2025-12-01 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.3900 | -2,000 | -21 | 426,818 | ||||
| 2025-12-01 | 2025-11-28 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.7900 | -2,000 | -22 | 428,818 | ||||
| 2025-12-01 | 2025-11-26 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.3200 | -2,000 | -21 | 430,818 | ||||
| 2025-11-25 | 2025-11-21 | 4 | Bunn Paul A. | VSTM | Common Stock | D | 3.2700 | 6,250 | 20 | 8,333 | ||||
| 2025-11-25 | 2025-11-21 | 4 | Bunn Paul A. | VSTM | Common Stock | D | 10.0000 | -6,250 | -62 | 2,083 | ||||
| 2025-11-25 | 2025-11-21 | 4 | Kauffman Michael | VSTM | Common Stock | D | 10.0000 | -8,550 | -86 | 8,666 | ||||
| 2025-11-25 | 2025-11-25 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0000 | -2,000 | -20 | 432,818 | ||||
| 2025-11-25 | 2025-11-24 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0000 | -2,000 | -20 | 434,818 | ||||
| 2025-11-25 | 2025-11-21 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0000 | -2,000 | -20 | 436,818 | ||||
| 2025-11-06 | 2025-11-03 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.0000 | -2,000 | -20 | 438,818 | ||||
| 2025-11-06 | 2025-11-03 | 4 | Paterson Dan | VSTM | Common Stock | D | 9.3500 | -1,299 | -12 | 440,818 | ||||
| 2025-10-14 | 2025-10-09 | 4 | Bunn Paul A. | VSTM | Common Stock | D | 9.0600 | -8,333 | -75 | 8,333 | ||||
| 2025-09-24 | 2025-09-24 | 4 | Calkins Daniel | VSTM | Common Stock | D | 9.2300 | -25 | -0 | 109,838 | ||||
| 2025-09-24 | 2025-09-22 | 4 | Calkins Daniel | VSTM | Common Stock | D | 9.0800 | -57 | -1 | 109,863 | ||||
| 2025-09-18 | 2025-09-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 9.9900 | -587 | -6 | 101,739 | ||||
| 2025-09-18 | 2025-09-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 9.9900 | -281 | -3 | 41,961 | ||||
| 2025-09-18 | 2025-09-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 9.9900 | -390 | -4 | 442,117 | ||||
| 2025-08-06 | 2025-08-06 | 4 | Paterson Dan | VSTM | Common Stock | D | 5.8100 | -1,332 | -8 | 442,507 | ||||
| 2025-06-24 | 2025-06-20 | 4 | Paterson Dan | VSTM | Common Stock | D | 5.1300 | -17,808 | -91 | 443,839 | ||||
| 2025-06-24 | 2025-06-23 | 4 | Calkins Daniel | VSTM | Common Stock | D | 4.7100 | -25 | -0 | 109,920 | ||||
| 2025-06-24 | 2025-06-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 5.1300 | -4,110 | -21 | 109,945 | ||||
| 2025-06-20 | 2025-06-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 5.6500 | -335 | -2 | 461,647 | ||||
| 2025-06-20 | 2025-06-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 5.6500 | -284 | -2 | 42,242 | ||||
| 2025-06-20 | 2025-06-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 5.6500 | -594 | -3 | 102,326 | ||||
| 2025-05-27 | 2025-05-22 | 4 | Bunn Paul A. | VSTM | Common Stock | D | 8,333 | 16,666 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | ROBERTSON MICHELLE | VSTM | Common Stock | D | 8,333 | 16,666 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | Kapur Anil | VSTM | Common Stock | D | 8,333 | 16,666 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 8,333 | 102,920 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 8,333 | 42,526 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | Kauffman Michael | VSTM | Common Stock | D | 8,333 | 17,216 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | Tollefson Karin Anna | VSTM | Common Stock | D | 8,333 | 16,666 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | JOHNSON JOHN | VSTM | Common Stock | D | 8,333 | 16,666 | ||||||
| 2025-05-27 | 2025-05-22 | 4 | Rowinsky Eric K | VSTM | Common Stock | D | 8,333 | 16,666 | ||||||
| 2025-05-20 | 2025-05-20 | 4 | Paterson Dan | VSTM | Common Stock | D | 8.1300 | -58,677 | -477 | 461,982 | ||||
| 2025-05-20 | 2025-05-16 | 4 | Paterson Dan | VSTM | Common Stock | D | -150,000 | 520,659 | ||||||
| 2025-05-20 | 2025-05-16 | 4 | Paterson Dan | VSTM | Common Stock | D | -25,000 | 370,659 | ||||||
| 2025-05-20 | 2025-05-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 8.1300 | -11,143 | -91 | 114,055 | ||||
| 2025-05-20 | 2025-05-16 | 4 | Calkins Daniel | VSTM | Common Stock | D | -38,850 | 125,198 | ||||||
| 2025-05-07 | 2025-05-05 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.3000 | -820 | -6 | 345,659 | ||||
| 2025-04-03 | 2025-04-01 | 4 | Ros Matthew | VSTM | Common Stock | D | 50,000 | 50,000 | ||||||
| 2025-03-24 | 2025-03-24 | 4 | Calkins Daniel | VSTM | Common Stock | D | 7.0400 | -26 | -0 | 86,348 | ||||
| 2025-03-24 | 2025-03-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 6.8900 | -65 | -0 | 86,374 | ||||
| 2025-03-19 | 2025-03-17 | 4 | Paterson Dan | VSTM | Common Stock | D | 6.9500 | -244 | -2 | 346,479 | ||||
| 2025-03-19 | 2025-03-17 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 6.9500 | -593 | -4 | 94,587 | ||||
| 2025-03-19 | 2025-03-17 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 6.9500 | -284 | -2 | 34,193 | ||||
| 2025-02-05 | 2025-02-04 | 4 | Paterson Dan | VSTM | Common Stock | D | 5.7000 | -858 | -5 | 346,723 | ||||
| 2025-01-14 | 2025-01-13 | 4 | Paterson Dan | VSTM | Common Stock | D | 5.2400 | -8,568 | -45 | 347,581 | ||||
| 2025-01-14 | 2025-01-10 | 4 | Paterson Dan | VSTM | Common Stock | D | 25,000 | 356,149 | ||||||
| 2025-01-14 | 2025-01-10 | 4 | Paterson Dan | VSTM | Common Stock | D | 100,000 | 331,149 | ||||||
| 2025-01-14 | 2025-01-10 | 4 | Calkins Daniel | VSTM | Common Stock | D | 38,800 | 86,439 | ||||||
| 2025-01-08 | 2025-01-06 | 4 | Calkins Daniel | VSTM | Common Stock | D | 6.9400 | -6 | -0 | 47,639 | ||||
| 2024-12-26 | 2024-12-24 | 4 | Calkins Daniel | VSTM | Common Stock | D | 3.9100 | -28 | -0 | 47,368 | ||||
| 2024-12-26 | 2024-12-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 4.3400 | -65 | -0 | 47,396 | ||||
| 2024-12-20 | 2024-12-19 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 4.3700 | -130 | -1 | 34,477 | ||||
| 2024-12-20 | 2024-12-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 4.5400 | -285 | -1 | 34,607 | ||||
| 2024-12-20 | 2024-12-19 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 4.3700 | -334 | -1 | 95,180 | ||||
| 2024-12-20 | 2024-12-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 4.5400 | -595 | -3 | 95,514 | ||||
| 2024-12-20 | 2024-12-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 4.3700 | -183 | -1 | 231,149 | ||||
| 2024-12-20 | 2024-12-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 4.5400 | -244 | -1 | 231,332 | ||||
| 2024-11-07 | 2024-11-05 | 4 | Paterson Dan | VSTM | Common Stock | D | 3.8400 | -812 | -3 | 231,576 | ||||
| 2024-10-09 | 2024-10-07 | 4 | Calkins Daniel | VSTM | Common Stock | D | 2.8600 | -6 | -0 | 47,461 | ||||
| 2024-09-24 | 2024-09-24 | 4 | Calkins Daniel | VSTM | Common Stock | D | 2.6800 | -28 | -0 | 47,467 | ||||
| 2024-09-24 | 2024-09-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 2.8000 | -65 | -0 | 47,495 | ||||
| 2024-09-20 | 2024-09-19 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 2.7900 | -131 | -0 | 34,892 | ||||
| 2024-09-20 | 2024-09-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 2.7900 | -184 | -1 | 232,388 | ||||
| 2024-09-20 | 2024-09-19 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 2.7900 | -336 | -1 | 96,109 | ||||
| 2024-09-18 | 2024-09-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 2.8000 | -287 | -1 | 35,023 | ||||
| 2024-09-18 | 2024-09-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 2.8000 | -246 | -1 | 232,572 | ||||
| 2024-09-18 | 2024-09-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 2.8000 | -600 | -2 | 96,445 | ||||
| 2024-08-07 | 2024-08-05 | 4 | Paterson Dan | VSTM | Common Stock | D | 2.1600 | -3,245 | -7 | 232,818 | ||||
| 2024-07-11 | 2024-07-09 | 4 | Calkins Daniel | VSTM | Common Stock | D | 2.6200 | -7 | -0 | 47,560 | ||||
| 2024-06-26 | 2024-06-24 | 4 | Calkins Daniel | VSTM | Common Stock | D | 3.1500 | -28 | -0 | 47,290 | ||||
| 2024-06-20 | 2024-06-18 | 4 | Bunn Paul A. | VSTM | Common Stock | D | 8,333 | 8,333 | ||||||
| 2024-06-20 | 2024-06-18 | 4 | Rowinsky Eric K | VSTM | Common Stock | D | 8,333 | 8,333 | ||||||
| 2024-06-20 | 2024-06-18 | 4 | Kapur Anil | VSTM | Common Stock | D | 8,333 | 8,333 | ||||||
| 2024-06-20 | 2024-06-18 | 4 | ROBERTSON MICHELLE | VSTM | Common Stock | D | 8,333 | 8,333 | ||||||
| 2024-06-20 | 2024-06-18 | 4 | Kauffman Michael | VSTM | Common Stock | D | 8,333 | 8,883 | ||||||
| 2024-06-20 | 2024-06-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 3.1600 | -67 | -0 | 47,318 | ||||
| 2024-06-20 | 2024-06-18 | 4 | Calkins Daniel | VSTM | Common Stock | D | 38,850 | 47,385 | ||||||
| 2024-06-20 | 2024-06-18 | 4 | Tollefson Karin Anna | VSTM | Common Stock | D | 8,333 | 8,333 | ||||||
| 2024-06-20 | 2024-06-20 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 3.2100 | -131 | -0 | 35,310 | ||||
| 2024-06-20 | 2024-06-18 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 8,333 | 35,441 | ||||||
| 2024-06-20 | 2024-06-17 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 3.4900 | -283 | -1 | 27,108 | ||||
| 2024-06-20 | 2024-06-20 | 4 | Paterson Dan | VSTM | Common Stock | D | 3.2100 | -183 | -1 | 236,063 | ||||
| 2024-06-20 | 2024-06-18 | 4 | Paterson Dan | VSTM | Common Stock | D | 150,000 | 236,246 | ||||||
| 2024-06-20 | 2024-06-17 | 4 | Paterson Dan | VSTM | Common Stock | D | 3.4900 | -244 | -1 | 86,246 | ||||
| 2024-06-20 | 2024-06-20 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 3.2100 | -335 | -1 | 97,045 | ||||
| 2024-06-20 | 2024-06-18 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 8,333 | 97,380 | ||||||
| 2024-06-20 | 2024-06-17 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 3.4900 | -593 | -2 | 89,047 | ||||
| 2024-06-20 | 2024-06-18 | 4 | JOHNSON JOHN | VSTM | Common Stock | D | 8,333 | 8,333 | ||||||
| 2024-04-08 | 2024-04-05 | 4 | Calkins Daniel | VSTM | Common Stock | D | 10.8700 | -6 | -0 | 8,535 | ||||
| 2024-03-27 | 2024-03-25 | 4 | Calkins Daniel | VSTM | Common Stock | D | 12.0200 | -25 | -0 | 8,541 | ||||
| 2024-03-21 | 2024-03-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 11.0700 | -55 | -1 | 8,566 | ||||
| 2024-03-20 | 2024-03-19 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 10.3800 | -130 | -1 | 27,391 | ||||
| 2024-03-20 | 2024-03-18 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 10.7100 | -283 | -3 | 27,521 | ||||
| 2024-03-20 | 2024-03-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.3800 | -182 | -2 | 86,490 | ||||
| 2024-03-20 | 2024-03-18 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.7100 | -244 | -3 | 86,672 | ||||
| 2024-03-20 | 2024-03-19 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 10.3800 | -273 | -3 | 89,640 | ||||
| 2024-03-20 | 2024-03-18 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 10.7100 | -537 | -6 | 89,913 | ||||
| 2024-02-07 | 2024-02-06 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 13.7000 | -9,204 | -126 | 27,804 | ||||
| 2024-01-24 | 2017-09-05 | 4 | Rowinsky Eric K By spouse | VSTM | Common Stock | I | 3.8400 | 2,000 | 8 | 2,000 | ||||
| 2024-01-17 | 2024-01-12 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 10.9500 | -9,204 | -101 | 37,008 | ||||
| 2024-01-09 | 2024-01-05 | 4 | Calkins Daniel | VSTM | Common Stock | D | 8.5000 | -6 | -0 | 8,621 | ||||
| 2023-12-28 | 2023-12-26 | 4 | Calkins Daniel | VSTM | Common Stock | D | 8.0800 | -25 | -0 | 8,350 | ||||
| 2023-12-21 | 2023-12-20 | 4 | Calkins Daniel | VSTM | Common Stock | D | 7.9300 | -57 | -0 | 8,375 | ||||
| 2023-12-20 | 2023-12-19 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 7.7300 | -130 | -1 | 46,212 | ||||
| 2023-12-20 | 2023-12-18 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 7.6400 | -284 | -2 | 46,342 | ||||
| 2023-12-20 | 2023-12-19 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 7.7300 | -274 | -2 | 90,450 | ||||
| 2023-12-20 | 2023-12-18 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 7.6400 | -487 | -4 | 90,724 | ||||
| 2023-12-20 | 2023-12-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.7300 | -183 | -1 | 86,916 | ||||
| 2023-12-20 | 2023-12-18 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.6400 | -244 | -2 | 87,099 | ||||
| 2023-10-10 | 2023-10-05 | 4 | Calkins Daniel | VSTM | Common Stock | D | 7.3000 | -5 | -0 | 8,432 | ||||
| 2023-09-25 | 2023-09-25 | 4 | Calkins Daniel | VSTM | Common Stock | D | 9.4000 | -25 | -0 | 8,437 | ||||
| 2023-09-25 | 2023-09-21 | 4 | Calkins Daniel | VSTM | Common Stock | D | 9.3100 | -232 | -2 | 8,462 | ||||
| 2023-09-20 | 2023-09-19 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 9.8400 | -130 | -1 | 46,626 | ||||
| 2023-09-20 | 2023-09-18 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 9.9100 | -278 | -3 | 46,756 | ||||
| 2023-09-20 | 2023-09-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 9.8400 | -183 | -2 | 87,343 | ||||
| 2023-09-20 | 2023-09-18 | 4 | Paterson Dan | VSTM | Common Stock | D | 9.9100 | -240 | -2 | 87,526 | ||||
| 2023-09-20 | 2023-09-19 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 9.8400 | -274 | -3 | 91,211 | ||||
| 2023-09-20 | 2023-09-18 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 9.9100 | -478 | -5 | 91,485 | ||||
| 2023-08-04 | 2023-08-02 | 4 | Paterson Dan | VSTM | Common Stock | D | 50,000 | 87,766 | ||||||
| 2023-07-10 | 2023-07-06 | 4 | Calkins Daniel | VSTM | Common Stock | D | 8.0200 | -5 | -0 | 8,694 | ||||
| 2023-06-28 | 2023-06-26 | 4 | Calkins Daniel | VSTM | Common Stock | D | 8.1700 | -26 | -0 | 8,422 | ||||
| 2023-06-21 | 2023-06-20 | 4 | Paterson Dan | VSTM | Common Stock | D | 10.3000 | -183 | -2 | 37,766 | ||||
| 2023-06-21 | 2023-06-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 9.9200 | -244 | -2 | 37,949 | ||||
| 2023-06-21 | 2023-06-20 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 10.3000 | -130 | -1 | 47,034 | ||||
| 2023-06-21 | 2023-06-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 9.9200 | -283 | -3 | 47,164 | ||||
| 2023-06-21 | 2023-06-20 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 10.3000 | -275 | -3 | 91,963 | ||||
| 2023-06-21 | 2023-06-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 9.9200 | -487 | -5 | 92,238 | ||||
| 2023-04-06 | 2023-04-05 | 4 | Calkins Daniel | VSTM | Common Stock | D | 0.3700 | -75 | -0 | 101,397 | ||||
| 2023-03-28 | 2023-03-24 | 4 | Calkins Daniel | VSTM | Common Stock | D | 0.4200 | -378 | -0 | 101,472 | ||||
| 2023-03-20 | 2023-03-20 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 0.4300 | -1,664 | -1 | 569,399 | ||||
| 2023-03-20 | 2023-03-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 0.4000 | -3,654 | -1 | 571,063 | ||||
| 2023-03-20 | 2023-03-20 | 4 | Paterson Dan | VSTM | Common Stock | D | 0.4300 | -2,339 | -1 | 458,351 | ||||
| 2023-03-20 | 2023-03-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 0.4000 | -3,138 | -1 | 460,690 | ||||
| 2023-03-20 | 2023-03-20 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 0.4300 | -3,508 | -2 | 1,112,736 | ||||
| 2023-03-20 | 2023-03-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 0.4000 | -6,276 | -3 | 1,116,244 | ||||
| 2023-01-09 | 2023-01-05 | 4 | Calkins Daniel | VSTM | Common Stock | D | 0.4300 | -74 | -0 | 98,517 | ||||
| 2022-12-29 | 2022-12-27 | 4 | Calkins Daniel | VSTM | Common Stock | D | 0.3300 | -1,246 | -0 | 98,591 | ||||
| 2022-12-20 | 2022-12-19 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 0.3700 | -3,556 | -1 | 1,122,520 | ||||
| 2022-12-20 | 2022-12-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 0.4000 | -25,162 | -10 | 1,126,076 | ||||
| 2022-12-20 | 2022-12-19 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 0.3700 | -1,429 | -1 | 574,717 | ||||
| 2022-12-20 | 2022-12-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 0.4000 | -12,408 | -5 | 576,146 | ||||
| 2022-12-20 | 2022-12-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 0.3700 | -2,954 | -1 | 463,828 | ||||
| 2022-12-20 | 2022-12-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 0.4000 | -15,676 | -6 | 466,782 | ||||
| 2022-12-15 | 3 | Gagnon Robert E. | VSTM | Common Stock | D | 588,554 | ||||||||
| 2022-11-08 | 3 | Calkins Daniel | VSTM | Common Stock | D | 99,837 | ||||||||
| 2022-09-21 | 2022-09-19 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 1.1300 | -3,355 | -4 | 1,151,238 | ||||
| 2022-09-21 | 2022-09-19 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 1.1300 | -1,348 | -2 | 588,554 | ||||
| 2022-09-21 | 2022-09-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 1.1300 | -2,786 | -3 | 482,458 | ||||
| 2022-08-02 | 2022-08-01 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 1.0800 | -5,858 | -6 | 1,154,593 | ||||
| 2022-06-22 | 2022-06-21 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 1.1400 | -3,362 | -4 | 1,160,451 | ||||
| 2022-06-22 | 2022-06-21 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 1.1400 | -1,351 | -2 | 589,902 | ||||
| 2022-06-22 | 2022-06-21 | 4 | Paterson Dan | VSTM | Common Stock | D | 1.1400 | -2,701 | -3 | 485,244 | ||||
| 2022-05-17 | 2022-05-16 | 4 | Paterson Dan | VSTM | Common Stock | D | 1.0300 | -4,988 | -5 | 487,945 | ||||
| 2022-05-17 | 2022-05-14 | 4 | Paterson Dan | VSTM | Common Stock | D | 15,000 | 492,933 | ||||||
| 2022-05-17 | 2022-05-16 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 1.0300 | -13,794 | -14 | 1,163,813 | ||||
| 2022-05-17 | 2022-05-14 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 50,000 | 1,177,607 | ||||||
| 2022-05-17 | 2022-05-16 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 1.0300 | -16,627 | -17 | 591,253 | ||||
| 2022-05-17 | 2022-05-14 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 50,000 | 607,880 | ||||||
| 2022-05-04 | 2022-05-02 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 1.4100 | -5,857 | -8 | 1,127,607 | ||||
| 2022-03-23 | 2022-03-21 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 1.2700 | -3,507 | -4 | 1,133,464 | ||||
| 2022-03-23 | 2022-03-21 | 4 | Paterson Dan | VSTM | Common Stock | D | 1.2700 | -2,818 | -4 | 477,933 | ||||
| 2022-03-23 | 2022-03-21 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 1.2700 | -1,409 | -2 | 557,880 | ||||
| 2022-02-07 | 3 | LAMPERT MARK N | VSTM | Common Stock | D | 10,753,294 | ||||||||
| 2022-02-07 | 3 | LAMPERT MARK N | VSTM | Common Stock | D | 994,353 | ||||||||
| 2022-02-07 | 3 | LAMPERT MARK N | VSTM | Common Stock | D | 7,883,287 | ||||||||
| 2022-02-02 | 2022-01-31 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 1.4800 | -5,695 | -8 | 1,136,971 | ||||
| 2022-01-05 | 2022-01-03 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 2.0500 | -26,033 | -53 | 1,142,666 | ||||
| 2022-01-05 | 2022-01-03 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 2.0500 | -19,612 | -40 | 559,289 | ||||
| 2022-01-05 | 2022-01-03 | 4 | Paterson Dan | VSTM | Common Stock | D | 2.0500 | -23,534 | -48 | 480,751 | ||||
| 2021-12-22 | 2021-12-20 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 2.2700 | -13,682 | -31 | 1,168,699 | ||||
| 2021-12-22 | 2021-12-20 | 4 | Paterson Dan | VSTM | Common Stock | D | 2.2700 | -10,994 | -25 | 504,285 | ||||
| 2021-12-22 | 2021-12-20 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 2.2700 | -5,497 | -12 | 578,901 | ||||
| 2021-12-17 | 2021-12-15 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 2.36 | 301,500 | 301,500 | |||||
| 2021-12-17 | 2021-12-15 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 148,500 | 584,398 | ||||||
| 2021-12-17 | 2021-08-12 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 2.8700 | -45,329 | -130 | 435,898 | ||||
| 2021-12-17 | 2021-12-15 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 2.36 | 368,500 | 368,500 | |||||
| 2021-12-17 | 2021-12-15 | 4 | Paterson Dan | VSTM | Common Stock | D | 181,500 | 515,279 | ||||||
| 2021-12-17 | 2021-08-12 | 4 | Paterson Dan | VSTM | Common Stock | D | 2.8700 | -50,244 | -144 | 333,779 | ||||
| 2021-12-17 | 2021-12-15 | 4 | Stuglik Brian M | VSTM | Stock Option (Right to Buy) | D | 2.36 | 737,000 | 737,000 | |||||
| 2021-12-17 | 2021-12-15 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 363,000 | 1,182,381 | ||||||
| 2021-12-17 | 2021-11-01 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 2.5900 | -5,839 | -15 | 819,381 | ||||
| 2021-11-17 | 2021-11-15 | 4 | ROBERTSON MICHELLE | VSTM | Stock Option (right to buy) | D | 3.11 | 63,493 | 63,493 | |||||
| 2021-06-30 | 2021-06-28 | 4 | JOHNSON JOHN | VSTM | Stock Option (right to buy) | D | 4.16 | 25,000 | 25,000 | |||||
| 2021-06-30 | 2021-06-28 | 4 | Consylman Gina | VSTM | Stock Option (right to buy) | D | 4.16 | 25,000 | 25,000 | |||||
| 2021-06-30 | 2021-06-28 | 4 | Rowinsky Eric K | VSTM | Stock Option (right to buy) | D | 4.16 | 25,000 | 25,000 | |||||
| 2021-06-30 | 2021-06-28 | 4 | Kauffman Michael | VSTM | Stock Option (right to buy) | D | 4.16 | 25,000 | 25,000 | |||||
| 2021-06-30 | 2021-06-28 | 4 | BARBERICH TIMOTHY J | VSTM | Stock Option (right to buy) | D | 4.16 | 25,000 | 25,000 | |||||
| 2021-06-28 | 2021-06-24 | 4 | Bunn Paul A. | VSTM | Stock Option (right to buy) | D | 4.43 | 73,356 | 73,356 | |||||
| 2021-06-28 | 2021-06-24 | 4 | Solomon Lesley Kim | VSTM | Stock Option (right to buy) | D | 4.43 | 73,356 | 73,356 | |||||
| 2021-03-29 | 2021-03-25 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 191,828 | 1,186,185 | ||||||
| 2021-01-08 | 2021-01-06 | 4 | Neumann Frank | VSTM | Stock Option (Right to Buy) | D | 2.22 | 300,000 | 300,000 | |||||
| 2021-01-08 | 2021-01-06 | 4 | Neumann Frank | VSTM | Common Stock | D | 150,000 | 150,000 | ||||||
| 2020-12-22 | 2020-12-18 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 2.20 | 203,776 | 203,776 | |||||
| 2020-12-22 | 2020-12-18 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 67,925 | 571,635 | ||||||
| 2020-12-22 | 2020-12-18 | 4 | Stuglik Brian M | VSTM | Stock Option (Right to Buy) | D | 2.20 | 611,328 | 611,328 | |||||
| 2020-12-22 | 2020-12-18 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 203,776 | 994,357 | ||||||
| 2020-12-22 | 2020-12-18 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 2.20 | 407,552 | 407,552 | |||||
| 2020-12-22 | 2020-12-18 | 4 | Paterson Dan | VSTM | Common Stock | D | 135,851 | 555,816 | ||||||
| 2020-12-07 | 2020-12-04 | 4 | BARBERICH TIMOTHY J | VSTM | Common Stock | D | 2.1700 | 50,000 | 108 | 218,000 | ||||
| 2020-08-13 | 2020-08-11 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 290,210 | 503,710 | ||||||
| 2020-08-13 | 2020-08-11 | 4 | Paterson Dan | VSTM | Common Stock | D | 321,679 | 419,965 | ||||||
| 2020-08-13 | 2020-08-11 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 419,581 | 790,581 | ||||||
| 2020-06-29 | 2020-06-25 | 4 | RA CAPITAL MANAGEMENT, LLC | VSTM | Common Stock | I | 1.9116 | -1,161,300 | -2,220 | 16,142,051 | ||||
| 2020-06-18 | 2020-06-16 | 4 | BARBERICH TIMOTHY J | VSTM | Stock Option (Right to Buy) | D | 1.77 | 25,000 | 25,000 | |||||
| 2020-06-18 | 2020-06-16 | 4 | Consylman Gina | VSTM | Stock Option (Right to Buy) | D | 1.77 | 35,342 | 35,342 | |||||
| 2020-06-18 | 2020-06-16 | 4 | JOHNSON JOHN | VSTM | Stock Option (Right to Buy) | D | 1.77 | 27,602 | 27,602 | |||||
| 2020-06-18 | 2020-06-16 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 1.77 | 25,000 | 25,000 | |||||
| 2020-06-18 | 2020-06-16 | 4 | Rowinsky Eric K | VSTM | Stock Option (Right to Buy) | D | 1.77 | 25,000 | 25,000 | |||||
| 2020-06-18 | 2020-06-16 | 4 | Wendel Bruce | VSTM | Stock Option (Right to Buy) | D | 1.77 | 25,000 | 25,000 | |||||
| 2020-04-29 | 2020-04-29 | 4 | JOHNSON JOHN | VSTM | Stock Option (Right to Buy) | D | 1.81 | 25,000 | 25,000 | |||||
| 2020-04-29 | 2020-04-27 | 4 | RA CAPITAL MANAGEMENT, LLC | VSTM | Common Stock | I | 2.3070 | -1,301,300 | -3,002 | 17,303,351 | ||||
| 2020-03-30 | 2020-03-27 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 100,000 | 371,000 | ||||||
| 2020-03-30 | 2020-03-27 | 4 | Paterson Dan | VSTM | Common Stock | D | 75,000 | 98,286 | ||||||
| 2020-03-30 | 2020-03-27 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 62,500 | 213,500 | ||||||
| 2020-03-06 | 2020-03-06 | 4 | Ridgeback Capital Investments L.P. | VSTM | 5% Convertible Senior Second Lien Notes due 2048 | D | 1.65 | |||||||
| 2020-03-06 | 2020-03-06 | 4 | Ridgeback Capital Investments L.P. | VSTM | Common Stock | D | 5,515,151 | 10,068,243 | ||||||
| 2020-03-05 | 3 | Shah Rajeev M. | VSTM | Common Stock | I | 37,209,302 | ||||||||
| 2020-03-05 | 3 | Shah Rajeev M. | VSTM | Common Stock | I | 37,209,302 | ||||||||
| 2020-03-05 | 3 | Shah Rajeev M. | VSTM | Common Stock | I | 37,209,302 | ||||||||
| 2020-03-05 | 3 | Shah Rajeev M. | VSTM | Common Stock | I | 37,209,302 | ||||||||
| 2020-03-05 | 3 | Shah Rajeev M. | VSTM | Common Stock | I | 37,209,302 | ||||||||
| 2020-03-05 | 3 | Shah Rajeev M. | VSTM | Common Stock | I | 37,209,302 | ||||||||
| 2020-01-21 | 3 | Ridgeback Capital Management LP | VSTM | Common Stock | D | 9,106,184 | ||||||||
| 2020-01-21 | 3 | Ridgeback Capital Management LP | VSTM | Common Stock | D | 9,106,184 | ||||||||
| 2020-01-21 | 3 | Ridgeback Capital Management LP | VSTM | Common Stock | D | 9,106,184 | ||||||||
| 2020-01-21 | 3 | Ridgeback Capital Management LP | VSTM | Common Stock | D | 9,106,184 | ||||||||
| 2020-01-21 | 3 | Ridgeback Capital Management LP | VSTM | Common Stock | D | 9,106,184 | ||||||||
| 2019-12-17 | 2019-12-13 | 4 | Stuglik Brian M | VSTM | Stock Option (Right to Buy) | D | 1.34 | 100,000 | 100,000 | |||||
| 2019-12-17 | 2019-12-13 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 1.34 | 200,000 | 200,000 | |||||
| 2019-12-17 | 2019-12-13 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 1.34 | 150,000 | 150,000 | |||||
| 2019-12-17 | 2019-12-13 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 1.34 | 125,000 | 125,000 | |||||
| 2019-12-17 | 2019-12-13 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 1.34 | 125,000 | 125,000 | |||||
| 2019-07-31 | 2019-07-29 | 4 | Stuglik Brian M | VSTM | Stock Option (Right to Buy) | D | 1.43 | 500,000 | 500,000 | |||||
| 2019-07-31 | 2019-07-29 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 270,000 | 270,000 | ||||||
| 2019-06-25 | 2019-06-21 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 1.81 | 250,000 | 250,000 | |||||
| 2019-06-25 | 2019-06-21 | 4 | BARBERICH TIMOTHY J | VSTM | Stock Option (Right to Buy) | D | 1.81 | 25,000 | 25,000 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Rowinsky Eric K | VSTM | Stock Option (Right to Buy) | D | 1.81 | 25,000 | 25,000 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 1.81 | 25,000 | 25,000 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 1.81 | 25,000 | 25,000 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Wendel Bruce | VSTM | Stock Option (Right to Buy) | D | 1.81 | 25,000 | 25,000 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 1.81 | 250,000 | 250,000 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 100,000 | 151,000 | ||||||
| 2019-06-25 | 2019-06-21 | 4 | Consylman Gina | VSTM | Stock Option (Right to Buy) | D | 1.81 | 5,137 | 5,137 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Stuglik Brian M | VSTM | Stock Option (Right to Buy) | D | 1.81 | 50,000 | 92,397 | |||||
| 2019-06-25 | 2019-06-21 | 4 | Stuglik Brian M | VSTM | Stock Option (Right to Buy) | D | 1.81 | 42,397 | 42,397 | |||||
| 2019-03-19 | 2019-03-15 | 4 | BARBERICH TIMOTHY J | VSTM | Common Stock | D | 3.2100 | 33,000 | 106 | 168,000 | ||||
| 2019-02-13 | 2018-06-11 | 5 | Rowinsky Eric K | VSTM | Stock Option (Right to Buy) | D | 5.59 | 25,891 | 25,891 | |||||
| 2019-02-13 | 2018-06-11 | 5 | BARBERICH TIMOTHY J | VSTM | Stock Option (Right to Buy) | D | 5.59 | 25,000 | 25,000 | |||||
| 2019-02-13 | 2018-06-11 | 5 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 5.59 | 25,000 | 25,000 | |||||
| 2019-02-13 | 2018-06-11 | 5 | Wendel Bruce | VSTM | Stock Option (Right to Buy) | D | 5.59 | 25,000 | 25,000 | |||||
| 2019-02-13 | 2018-01-25 | 5 | Forrester Robert By trust | VSTM | Common Stock | I | 4,000 | 9,000 | ||||||
| 2019-02-13 | 2018-01-25 | 5 | Forrester Robert By trust | VSTM | Common Stock | I | 4,000 | 9,000 | ||||||
| 2019-02-13 | 2018-01-25 | 5 | Forrester Robert | VSTM | Common Stock | D | -4,000 | 213,234 | ||||||
| 2019-02-13 | 2018-01-25 | 5 | Forrester Robert | VSTM | Common Stock | D | -4,000 | 217,234 | ||||||
| 2019-02-13 | 2018-06-11 | 5 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 5.59 | 25,000 | 25,000 | |||||
| 2019-02-13 | 2018-06-11 | 5 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 5.59 | 25,000 | 25,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 3.51 | 75,000 | 75,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 3.51 | 75,000 | 75,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Bloom Steven H. | VSTM | Stock Option (Right to Buy) | D | 3.51 | 40,000 | 40,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Bloom Steven H. | VSTM | Stock Option (Right to Buy) | D | 3.51 | 40,000 | 40,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 3.51 | 240,000 | 240,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 3.51 | 240,000 | 240,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 3.51 | 50,000 | 50,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 3.51 | 50,000 | 50,000 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Lobacki Joseph M | VSTM | Stock Option (Right to Buy) | D | 3.51 | 62,500 | 62,500 | |||||
| 2019-01-07 | 2019-01-03 | 4 | Lobacki Joseph M | VSTM | Stock Option (Right to Buy) | D | 3.51 | 62,500 | 62,500 | |||||
| 2018-10-19 | 2018-10-17 | 4 | Consylman Gina | VSTM | Stock Option (Right to Buy) | D | 6.03 | 50,000 | 50,000 | |||||
| 2018-10-02 | 2018-09-28 | 4 | Lobacki Joseph M | VSTM | Common Stock | D | 7.3000 | 3,000 | 22 | 10,700 | ||||
| 2018-10-02 | 2018-09-28 | 4 | BARBERICH TIMOTHY J | VSTM | Common Stock | D | 7.3100 | 5,000 | 37 | 135,000 | ||||
| 2018-10-02 | 2018-09-28 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.0000 | 3,000 | 21 | 23,286 | ||||
| 2018-10-02 | 2018-09-24 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 2.97 | 30,000 | 30,000 | |||||
| 2018-10-02 | 2018-09-28 | 4 | Kauffman Michael | VSTM | Common Stock | D | 4,000 | 8,000 | ||||||
| 2018-10-02 | 2018-09-28 | 4 | Kauffman Michael | VSTM | Common Stock | D | 7.4900 | 4,000 | 30 | 4,000 | ||||
| 2018-10-02 | 2018-09-24 | 4 | Le NgocDiep T. MD, PhD | VSTM | Stock Option (Right to Buy) | D | 4.63 | 70,000 | 70,000 | |||||
| 2018-10-02 | 2018-09-24 | 4 | Le NgocDiep T. MD, PhD | VSTM | Stock Option (Right to Buy) | D | 2.97 | 5,000 | 5,000 | |||||
| 2018-10-02 | 2018-09-28 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.0000 | 2,000 | 14 | 221,234 | ||||
| 2018-10-02 | 2018-09-24 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 2.97 | 60,000 | 60,000 | |||||
| 2018-10-02 | 2018-09-24 | 4 | Bloom Steven H. | VSTM | Stock Option (Right to Buy) | D | 2.97 | 28,000 | 28,000 | |||||
| 2018-10-02 | 2018-09-28 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 7.3000 | 600 | 4 | 1,000 | ||||
| 2018-10-02 | 2018-09-28 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 7.3000 | 100 | 1 | 400 | ||||
| 2018-10-02 | 2018-09-28 | 4 | Stuglik Brian M | VSTM | Common Stock | D | 7.3100 | 300 | 2 | 300 | ||||
| 2018-10-01 | 2018-09-27 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.0400 | 1,200 | 8 | 20,286 | ||||
| 2018-10-01 | 2018-09-27 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.0100 | 800 | 6 | 19,086 | ||||
| 2018-10-01 | 2018-09-27 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.0000 | 10,000 | 70 | 219,234 | ||||
| 2018-10-01 | 2018-09-27 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.0000 | 500 | 4 | 209,234 | ||||
| 2018-08-30 | 3 | Gagnon Robert E. | VSTM | Common Stock | D | 2,000 | ||||||||
| 2018-08-30 | 3 | Gagnon Robert E. | VSTM | Common Stock | D | 2,000 | ||||||||
| 2018-08-30 | 3 | Gagnon Robert E. | VSTM | Common Stock | D | 2,000 | ||||||||
| 2018-08-30 | 2018-08-28 | 4 | Gagnon Robert E. | VSTM | Stock Option (Right to Buy) | D | 9.43 | 350,000 | 350,000 | |||||
| 2018-08-30 | 2018-08-28 | 4 | Gagnon Robert E. | VSTM | Common Stock | D | 50,000 | 51,000 | ||||||
| 2018-06-12 | 2018-06-08 | 4 | Bloom Steven H. | VSTM | Common Stock | D | 5.9800 | 3,000 | 18 | 3,500 | ||||
| 2018-06-12 | 2018-06-08 | 4 | Lobacki Joseph M | VSTM | Common Stock | D | 5.7900 | 7,700 | 45 | 7,700 | ||||
| 2018-06-04 | 2018-04-06 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 2.97 | 30,000 | 30,000 | |||||
| 2018-06-04 | 2018-04-06 | 4 | Bloom Steven H. | VSTM | Stock Option (Right to Buy) | D | 2.97 | 14,000 | 14,000 | |||||
| 2018-06-04 | 2018-04-06 | 4 | Le NgocDiep T. MD, PhD | VSTM | Stock Option (Right to Buy) | D | 2.97 | 2,500 | 2,500 | |||||
| 2018-06-04 | 2018-04-06 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 2.97 | 15,000 | 15,000 | |||||
| 2018-06-04 | 2018-04-06 | 4 | Feder Julie B | VSTM | Stock Option (Right to Buy) | D | 2.97 | 5,000 | 5,000 | |||||
| 2018-02-06 | 2017-05-26 | 5 | Forrester Robert By The Iona Forrester 2001 Trust | VSTM | Common Stock | I | 5,000 | 5,000 | ||||||
| 2018-02-06 | 2017-05-26 | 5 | Forrester Robert | VSTM | Common Stock | D | -5,000 | 208,734 | ||||||
| 2018-02-06 | 2017-05-26 | 5 | Forrester Robert By The Claudia Forrester 2001 Trust | VSTM | Common Stock | I | 5,000 | 5,000 | ||||||
| 2018-02-06 | 2017-05-26 | 5 | Forrester Robert | VSTM | Common Stock | D | -5,000 | 213,734 | ||||||
| 2018-01-09 | 2018-01-05 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 2.97 | 150,000 | 150,000 | |||||
| 2018-01-09 | 2018-01-05 | 4 | Feder Julie B | VSTM | Stock Option (Right to Buy) | D | 2.97 | 25,000 | 25,000 | |||||
| 2018-01-09 | 2018-01-05 | 4 | Bloom Steven H. | VSTM | Stock Option (Right to Buy) | D | 2.97 | 70,000 | 70,000 | |||||
| 2018-01-09 | 2018-01-05 | 4 | Le NgocDiep T. MD, PhD | VSTM | Stock Option (Right to Buy) | D | 2.97 | 12,500 | 12,500 | |||||
| 2018-01-09 | 2018-01-05 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 2.97 | 75,000 | 75,000 | |||||
| 2018-01-05 | 2018-01-03 | 4 | Lobacki Joseph M | VSTM | Stock Option (Right to Buy) | D | 3.14 | 400,000 | 400,000 | |||||
| 2017-12-07 | 2017-12-05 | 4 | BARBERICH TIMOTHY J | VSTM | Common Stock | D | 3.9500 | 60,538 | 239 | 130,000 | ||||
| 2017-11-17 | 3 | Bloom Steven H. | VSTM | Common Stock | D | 1,000 | ||||||||
| 2017-11-17 | 3 | Bloom Steven H. | VSTM | Common Stock | D | 1,000 | ||||||||
| 2017-10-11 | 2017-10-09 | 4 | Le NgocDiep T. MD, PhD | VSTM | Stock Option (Right to Buy) | D | 4.63 | 300,000 | 300,000 | |||||
| 2017-09-21 | 2017-09-19 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 1.37 | 50,000 | 100,000 | |||||
| 2017-09-21 | 2017-09-19 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 1.37 | 50,000 | 100,000 | |||||
| 2017-09-08 | 2017-09-06 | 4 | Stuglik Brian M | VSTM | Stock Option (Right to Buy) | D | 4.92 | 50,000 | 50,000 | |||||
| 2017-07-11 | 2017-07-10 | 4 | Feder Julie B | VSTM | Stock Option (Right to Buy) | D | 3.45 | 370,000 | 370,000 | |||||
| 2017-06-15 | 2017-06-13 | 4 | Wendel Bruce | VSTM | Stock Option (Right to Buy) | D | 2.09 | 25,000 | 25,000 | |||||
| 2017-06-15 | 2017-06-13 | 4 | BARBERICH TIMOTHY J | VSTM | Stock Option (Right to Buy) | D | 2.09 | 25,000 | 25,000 | |||||
| 2017-06-15 | 2017-06-13 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 2.09 | 25,000 | 25,000 | |||||
| 2017-06-15 | 2017-06-13 | 4 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 2.09 | 25,000 | 25,000 | |||||
| 2017-06-15 | 2017-06-13 | 4 | Rowinsky Eric K | VSTM | Stock Option (Right to Buy) | D | 2.09 | 50,000 | 50,000 | |||||
| 2017-06-15 | 2017-06-13 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 2.09 | 25,000 | 25,000 | |||||
| 2017-05-17 | 2017-05-15 | 4 | BARBERICH TIMOTHY J | VSTM | Common Stock | D | 2.4500 | 30,000 | 74 | 69,462 | ||||
| 2017-01-11 | 2017-01-09 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 1.20 | 360,000 | 360,000 | |||||
| 2017-01-11 | 2017-01-09 | 4 | Berk Gregory | VSTM | Stock Option (Right to Buy) | D | 1.20 | 150,000 | 150,000 | |||||
| 2017-01-11 | 2017-01-09 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 1.20 | 150,000 | 150,000 | |||||
| 2017-01-11 | 2017-01-09 | 4 | Chiapponi Joseph | VSTM | Stock Option (Right to Buy) | D | 1.20 | 60,000 | 60,000 | |||||
| 2016-11-01 | 2016-10-29 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 1.37 | 50,000 | 50,000 | |||||
| 2016-11-01 | 2016-10-29 | 4 | Berk Gregory | VSTM | Stock Option (Right to Buy) | D | 1.37 | 50,000 | 50,000 | |||||
| 2016-11-01 | 2016-10-29 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 1.37 | 50,000 | 50,000 | |||||
| 2016-06-16 | 2016-06-14 | 4 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 1.37 | 25,000 | 25,000 | |||||
| 2016-06-16 | 2016-06-14 | 4 | Wendel Bruce | VSTM | Stock Option (Right to Buy) | D | 1.37 | 50,000 | 50,000 | |||||
| 2016-06-16 | 2016-06-14 | 4 | BARBERICH TIMOTHY J | VSTM | Stock Option (Right to Buy) | D | 1.37 | 25,000 | 25,000 | |||||
| 2016-06-16 | 2016-06-14 | 4 | FRIEDMAN PAUL A | VSTM | Stock Option (Right to Buy) | D | 1.37 | 25,000 | 25,000 | |||||
| 2016-06-16 | 2016-06-14 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 1.37 | 25,000 | 25,000 | |||||
| 2016-06-16 | 2016-06-14 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 1.37 | 25,000 | 25,000 | |||||
| 2016-06-16 | 2016-06-14 | 4 | Chiapponi Joseph | VSTM | Stock Option (Right to Buy) | D | 1.37 | 20,000 | 20,000 | |||||
| 2016-04-28 | 3 | Chiapponi Joseph | VSTM | Common Stock | D | 13,004 | ||||||||
| 2016-04-28 | 3 | Chiapponi Joseph | VSTM | Common Stock | D | 13,004 | ||||||||
| 2016-04-19 | 2016-04-15 | 4 | Berk Gregory | VSTM | Stock Option (Right to Buy) | D | 1.51 | 370,000 | 370,000 | |||||
| 2016-02-17 | 2015-08-24 | 4 | Kauffman Michael | VSTM | Common Stock | D | 6.4610 | -2,070 | -13 | 0 | ||||
| 2016-02-17 | 2015-03-19 | 4 | Kauffman Michael | VSTM | Common Stock | D | 10.9590 | -930 | -10 | 2,070 | ||||
| 2016-01-04 | 2016-01-01 | 4 | Paterson Dan | VSTM | Stock Option (right to buy) | D | 1.86 | 66,000 | 66,000 | |||||
| 2016-01-04 | 2016-01-01 | 4 | GREEN JOHN B | VSTM | Stock Option (right to buy) | D | 1.86 | 23,760 | 23,760 | |||||
| 2016-01-04 | 2016-01-01 | 4 | Forrester Robert | VSTM | Stock Option (right to buy) | D | 1.86 | 132,000 | 132,000 | |||||
| 2015-11-10 | 2015-11-09 | 4 | GREEN JOHN B | VSTM | Stock Option (right to buy) | D | 2.13 | 48,240 | 48,240 | |||||
| 2015-11-10 | 2015-11-09 | 4 | Forrester Robert | VSTM | Stock Option (right to buy) | D | 2.13 | 268,000 | 268,000 | |||||
| 2015-11-10 | 2015-11-09 | 4 | Paterson Dan | VSTM | Stock Option (right to buy) | D | 2.13 | 134,000 | 134,000 | |||||
| 2015-08-04 | 2015-08-01 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.3000 | -6,355 | -46 | 18,286 | ||||
| 2015-08-04 | 2015-08-01 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.3000 | -8,190 | -60 | 218,734 | ||||
| 2015-07-01 | 2015-06-30 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 6.8600 | -2,648 | -18 | 665,224 | ||||
| 2015-06-30 | 2015-06-29 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.1050 | 2,000 | 14 | 226,924 | ||||
| 2015-06-30 | 2015-06-29 | 4 | GREEN JOHN B | VSTM | Common Stock | D | 7.1200 | 500 | 4 | 2,500 | ||||
| 2015-06-30 | 2015-06-29 | 4 | Singh Monica | VSTM | Common Stock | D | 6.9500 | 1,000 | 7 | 2,000 | ||||
| 2015-06-29 | 2015-06-26 | 4 | GREEN JOHN B | VSTM | Common Stock | D | 7.3919 | 500 | 4 | 2,000 | ||||
| 2015-06-22 | 2015-06-18 | 4 | Paterson Dan | VSTM | Common Stock | D | 8.0450 | 1,000 | 8 | 32,571 | ||||
| 2015-06-18 | 2015-06-17 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.9700 | 1,000 | 8 | 224,924 | ||||
| 2015-06-16 | 2015-06-12 | 4 | FRIEDMAN PAUL A | VSTM | Stock Option (Right to Buy) | D | 7.99 | 19,495 | 19,495 | |||||
| 2015-06-16 | 2015-06-12 | 4 | BARBERICH TIMOTHY J | VSTM | Stock Option (Right to Buy) | D | 7.99 | 22,597 | 22,597 | |||||
| 2015-06-16 | 2015-06-12 | 4 | SHERWIN STEPHEN A | VSTM | Stock Option (Right to Buy) | D | 7.99 | 17,969 | 17,969 | |||||
| 2015-06-16 | 2015-06-12 | 4 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 7.99 | 17,969 | 17,969 | |||||
| 2015-06-16 | 2015-06-12 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 7.99 | 17,969 | 17,969 | |||||
| 2015-06-16 | 2015-06-12 | 4 | TERMEER HENRI A | VSTM | Stock Option (Right to Buy) | D | 7.99 | 17,969 | 17,969 | |||||
| 2015-06-16 | 2015-06-12 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 7.99 | 17,969 | 17,969 | |||||
| 2015-04-02 | 2015-03-31 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 10.4900 | -2,817 | -30 | 674,328 | ||||
| 2015-02-03 | 2015-02-01 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.3000 | -6,315 | -46 | 31,571 | ||||
| 2015-02-03 | 2015-02-01 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.3000 | -8,190 | -60 | 223,924 | ||||
| 2015-01-28 | 2015-01-28 | 4 | Westphal Christoph H By Longwood Fund II, LP | VSTM | Common Stock | I | 6.5000 | 1,230,769 | 8,000 | 1,230,769 | ||||
| 2015-01-28 | 2015-01-28 | 4 | BARBERICH TIMOTHY J | VSTM | Common Stock | D | 6.5000 | 38,462 | 250 | 39,462 | ||||
| 2015-01-12 | 2015-01-08 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.1900 | -5,810 | -53 | 683,601 | ||||
| 2015-01-12 | 2015-01-08 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 11,622 | 689,411 | ||||||
| 2015-01-12 | 2015-01-08 | 4 | Singh Monica | VSTM | Stock Option (Right to Buy) | D | 9.19 | 25,983 | 25,983 | |||||
| 2015-01-12 | 2015-01-08 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 9.19 | 270,488 | 270,488 | |||||
| 2015-01-12 | 2015-01-08 | 4 | Horobin Joanna | VSTM | Stock Option (Right to Buy) | D | 9.19 | 100,118 | 100,118 | |||||
| 2015-01-12 | 2015-01-08 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 9.19 | 144,786 | 144,786 | |||||
| 2015-01-12 | 2015-01-08 | 4 | GREEN JOHN B | VSTM | Stock Option (Right to Buy) | D | 9.19 | 44,497 | 44,497 | |||||
| 2015-01-07 | 2014-12-23 | 4/A | TERMEER HENRI A By wife | VSTM | Common Stock | I | 8.1078 | 14,000 | 114 | 14,000 | ||||
| 2015-01-07 | 2014-12-23 | 4/A | TERMEER HENRI A | VSTM | Common Stock | D | 8.1083 | 15,000 | 122 | 32,179 | ||||
| 2014-12-31 | 2014-12-29 | 4 | Horobin Joanna | VSTM | Common Stock | D | 8.6000 | 750 | 6 | 750 | ||||
| 2014-12-31 | 2014-12-29 | 4 | Phanstiel S. Louise Through The Phanstiel Trust U/A/D 02/05/02 | VSTM | Common Stock | I | 8.5435 | 10,000 | 85 | 26,500 | ||||
| 2014-12-31 | 2014-12-31 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.8600 | -2,770 | -25 | 677,789 | ||||
| 2014-12-29 | 2014-12-26 | 4 | SHERWIN STEPHEN A Through Sherwin Family Trust | VSTM | Common Stock | I | 8.5580 | 2,500 | 21 | 2,500 | ||||
| 2014-12-29 | 2014-12-24 | 4 | FRIEDMAN PAUL A | VSTM | Common Stock | D | 8.3108 | 3,000 | 25 | 3,000 | ||||
| 2014-12-24 | 2014-12-23 | 4 | TERMEER HENRI A By wife | VSTM | Common Stock | I | 8.0938 | 10,100 | 82 | 10,100 | ||||
| 2014-12-24 | 2014-12-23 | 4 | TERMEER HENRI A | VSTM | Common Stock | D | 8.0888 | 9,000 | 73 | 27,079 | ||||
| 2014-12-23 | 2014-12-23 | 4 | Singh Monica | VSTM | Common Stock | D | 8.0890 | 1,000 | 8 | 1,000 | ||||
| 2014-12-23 | 2014-12-23 | 4 | GREEN JOHN B | VSTM | Common Stock | D | 8.1700 | 500 | 4 | 1,500 | ||||
| 2014-12-22 | 2014-12-19 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.5000 | 1,500 | 13 | 687,016 | ||||
| 2014-12-22 | 2014-12-19 | 4 | Paterson Dan | VSTM | Common Stock | D | 8.5199 | 2,000 | 17 | 45,857 | ||||
| 2014-12-19 | 2014-12-19 | 4 | Forrester Robert | VSTM | Common Stock | D | 8.6600 | 1,000 | 9 | 232,114 | ||||
| 2014-11-12 | 2014-11-11 | 4 | Lawton Alison Frances | VSTM | Common Stock | D | 9.1692 | 2,500 | 23 | 2,500 | ||||
| 2014-10-02 | 2014-09-30 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.6000 | -2,762 | -24 | 685,516 | ||||
| 2014-09-18 | 2014-09-17 | 4 | Kauffman Michael | VSTM | Common Stock | D | 9.0999 | 3,000 | 27 | 3,000 | ||||
| 2014-08-05 | 2014-08-01 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.3900 | -8,206 | -61 | 231,114 | ||||
| 2014-08-05 | 2014-08-01 | 4 | Pachter Jonathan | VSTM | Common Stock | D | 7.3900 | -4,706 | -35 | 62,249 | ||||
| 2014-08-05 | 2014-08-01 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.3900 | -6,373 | -47 | 43,857 | ||||
| 2014-07-01 | 2014-06-30 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.5200 | -5,530 | -53 | 694,734 | ||||
| 2014-06-11 | 2014-06-10 | 4 | ALDRICH RICHARD | VSTM | Stock Option (Right to Buy) | D | 10.07 | 25,000 | 25,000 | |||||
| 2014-06-11 | 2014-06-10 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 10.07 | 25,000 | 25,000 | |||||
| 2014-06-11 | 2014-06-10 | 4 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 10.07 | 25,000 | 25,000 | |||||
| 2014-06-11 | 2014-06-10 | 4 | SHERWIN STEPHEN A | VSTM | Stock Option (Right to Buy) | D | 10.07 | 25,000 | 25,000 | |||||
| 2014-06-11 | 2014-06-10 | 4 | TERMEER HENRI A | VSTM | Stock Option (Right to Buy) | D | 10.07 | 25,000 | 25,000 | |||||
| 2014-06-11 | 2014-06-10 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 10.07 | 25,000 | 25,000 | |||||
| 2014-06-02 | 2014-05-30 | 4 | BARBERICH TIMOTHY J | VSTM | Common Stock | D | 9.8950 | 1,000 | 10 | 1,000 | ||||
| 2014-05-21 | 2014-05-20 | 4 | ALDRICH RICHARD | VSTM | Common Stock | D | 8.3700 | 1,000 | 8 | 408,142 | ||||
| 2014-05-19 | 2014-05-15 | 4 | Paterson Dan | VSTM | Common Stock | D | 7.4670 | 1,000 | 7 | 58,143 | ||||
| 2014-05-15 | 2014-05-14 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 7.5600 | 2,000 | 15 | 700,264 | ||||
| 2014-05-14 | 2014-05-13 | 4 | GREEN JOHN B | VSTM | Common Stock | D | 7.7400 | 1,000 | 8 | 1,000 | ||||
| 2014-05-14 | 2014-05-13 | 4 | Pachter Jonathan | VSTM | Common Stock | D | 7.6200 | 1,000 | 8 | 66,955 | ||||
| 2014-05-13 | 2014-05-12 | 4 | FRIEDMAN PAUL A | VSTM | Stock Option (Right to Buy) | D | 7.62 | 50,000 | 50,000 | |||||
| 2014-05-13 | 2014-05-13 | 4 | Forrester Robert | VSTM | Common Stock | D | 7.6200 | 1,000 | 8 | 239,320 | ||||
| 2014-04-02 | 2014-04-01 | 4 | Singh Monica | VSTM | Stock Option (Right to Buy) | D | 10.99 | 150,000 | 150,000 | |||||
| 2014-03-31 | 2014-03-31 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 10.3600 | -5,550 | -57 | 698,264 | ||||
| 2014-03-11 | 2014-03-10 | 4 | BARBERICH TIMOTHY J | VSTM | Stock Option (Right to Buy) | D | 14.27 | 50,000 | 50,000 | |||||
| 2014-02-06 | 2014-02-04 | 4 | Forrester Robert | VSTM | Common Stock | D | 12.5600 | -8,294 | -104 | 238,320 | ||||
| 2014-02-06 | 2014-02-04 | 4 | Pachter Jonathan | VSTM | Common Stock | D | 12.5600 | -4,793 | -60 | 65,955 | ||||
| 2014-02-06 | 2014-02-04 | 4 | Paterson Dan | VSTM | Common Stock | D | 12.5600 | -6,515 | -82 | 87,775 | ||||
| 2014-01-27 | 2014-01-24 | 4 | Longwood Fund, L.P. By Longwood Fund GP, LLC | VSTM | Common Stock | I | 50,021 | 1,919,898 | ||||||
| 2014-01-27 | 2014-01-24 | 4 | Longwood Fund, L.P. | VSTM | Common Stock | D | -999,964 | 1,869,877 | ||||||
| 2014-01-09 | 2014-01-07 | 4 | GREEN JOHN B | VSTM | Stock Option (Right to Buy) | D | 13.59 | 60,000 | 60,000 | |||||
| 2014-01-09 | 2014-01-08 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 13.5900 | -12,392 | -168 | 703,814 | ||||
| 2014-01-09 | 2014-01-07 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 25,826 | 716,206 | ||||||
| 2014-01-09 | 2014-01-07 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 13.59 | 250,000 | 250,000 | |||||
| 2014-01-09 | 2014-01-07 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 13.59 | 250,000 | 250,000 | |||||
| 2014-01-09 | 2014-01-07 | 4 | Pachter Jonathan | VSTM | Stock Option (Right to Buy) | D | 13.59 | 50,000 | 50,000 | |||||
| 2014-01-09 | 2014-01-07 | 4 | Horobin Joanna | VSTM | Stock Option (Right to Buy) | D | 13.59 | 100,000 | 100,000 | |||||
| 2014-01-09 | 2014-01-07 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 13.59 | 100,000 | 100,000 | |||||
| 2014-01-09 | 2014-01-07 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 13.59 | 100,000 | 100,000 | |||||
| 2014-01-03 | 2014-01-02 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 11.4000 | -6,492 | -74 | 690,380 | ||||
| 2013-11-19 | 2013-11-18 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.6020 | 1,000 | 10 | 696,872 | ||||
| 2013-11-19 | 2013-10-31 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 10.0000 | 400 | 4 | 695,872 | ||||
| 2013-11-19 | 2013-10-31 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9900 | 400 | 4 | 695,472 | ||||
| 2013-11-12 | 2013-11-11 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 10.9300 | 1,000 | 11 | 20,000 | ||||
| 2013-11-04 | 2013-11-04 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 10.5100 | 1,000 | 11 | 19,000 | ||||
| 2013-10-28 | 2013-10-28 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 11.2600 | 1,000 | 11 | 18,000 | ||||
| 2013-10-21 | 2013-10-21 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 12.5700 | 1,000 | 13 | 17,000 | ||||
| 2013-10-15 | 2013-10-14 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 10.5600 | 1,000 | 11 | 16,000 | ||||
| 2013-10-07 | 2013-10-07 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 11.5300 | 1,000 | 12 | 15,000 | ||||
| 2013-10-01 | 2013-09-30 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 12.7100 | -6,094 | -77 | 695,072 | ||||
| 2013-09-30 | 2013-09-30 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 12.5500 | 1,000 | 13 | 14,000 | ||||
| 2013-09-23 | 2013-09-23 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 13.1700 | 1,000 | 13 | 13,000 | ||||
| 2013-09-19 | 2013-09-17 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 14.18 | 50,000 | 50,000 | |||||
| 2013-09-16 | 2013-09-16 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 13.8100 | 1,000 | 14 | 12,000 | ||||
| 2013-09-09 | 2013-09-09 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 14.0400 | 1,000 | 14 | 11,000 | ||||
| 2013-09-03 | 2013-09-03 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 14.0700 | 1,000 | 14 | 10,000 | ||||
| 2013-08-26 | 2013-08-26 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 14.2100 | 1,000 | 14 | 9,000 | ||||
| 2013-08-19 | 2013-08-19 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 13.4500 | 1,000 | 13 | 8,000 | ||||
| 2013-08-12 | 2013-08-12 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 14.7500 | 1,000 | 15 | 7,000 | ||||
| 2013-08-05 | 2013-08-01 | 4 | Forrester Robert | VSTM | Common Stock | D | 15.1900 | -8,360 | -127 | 246,614 | ||||
| 2013-08-05 | 2013-08-05 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 15.2500 | 1,000 | 15 | 6,000 | ||||
| 2013-08-05 | 2013-08-01 | 4 | Pachter Jonathan | VSTM | Common Stock | D | 15.1900 | -4,892 | -74 | 70,748 | ||||
| 2013-08-05 | 2013-08-01 | 4 | Paterson Dan | VSTM | Common Stock | D | 15.1900 | -6,569 | -100 | 94,290 | ||||
| 2013-07-29 | 2013-07-29 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 15.1500 | 1,000 | 15 | 5,000 | ||||
| 2013-07-24 | 2013-07-24 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 16.3900 | 1,000 | 16 | 4,000 | ||||
| 2013-07-15 | 2013-07-15 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 17.1900 | 1,000 | 17 | 3,000 | ||||
| 2013-07-10 | 2013-07-08 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 14.6900 | 1,000 | 15 | 2,000 | ||||
| 2013-07-02 | 2013-07-01 | 4 | ALDRICH RICHARD By Richard H. Aldrich 2005 Revocable Trust | VSTM | Common Stock | I | 14.1100 | 1,000 | 14 | 1,000 | ||||
| 2013-07-02 | 2013-07-01 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 13.8800 | -5,923 | -82 | 701,166 | ||||
| 2013-06-13 | 2013-06-12 | 4 | TERMEER HENRI A | VSTM | Common Stock | D | 9.7443 | 5,823 | 57 | 17,179 | ||||
| 2013-06-13 | 2013-06-12 | 4 | CHP III LP | VSTM | Common Stock | D | 9.5993 | 23,171 | 222 | 2,329,121 | ||||
| 2013-06-13 | 2013-06-11 | 4 | CHP III LP | VSTM | Common Stock | D | 9.2191 | 25,000 | 230 | 2,305,950 | ||||
| 2013-06-13 | 2013-06-12 | 4 | Phanstiel S. Louise By The Phanstiel Trust U/A/D 02/05/02 | VSTM | Common Stock | I | 9.6005 | 4,500 | 43 | 16,500 | ||||
| 2013-06-13 | 2013-06-12 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 9.5993 | 23,171 | 222 | 2,329,121 | ||||
| 2013-06-13 | 2013-06-13 | 4 | Forrester Robert | VSTM | Common Stock | D | 11.3940 | 1,000 | 11 | 254,974 | ||||
| 2013-06-12 | 2013-06-11 | 4 | Phanstiel S. Louise By The Phanstiel Trust U/A/D 02/05/02 | VSTM | Common Stock | I | 9.3722 | 8,000 | 75 | 12,000 | ||||
| 2013-06-12 | 2013-06-10 | 4 | Phanstiel S. Louise By The Phanstiel Trust U/A/D 02/05/02 | VSTM | Common Stock | I | 9.1625 | 4,000 | 37 | 4,000 | ||||
| 2013-06-12 | 2013-06-11 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 9.2191 | 25,000 | 230 | 2,305,950 | ||||
| 2013-06-11 | 2013-06-07 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.0560 | 1,000 | 9 | 707,089 | ||||
| 2013-06-11 | 2013-05-30 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.4300 | 100 | 1 | 706,089 | ||||
| 2013-06-11 | 2013-05-30 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.4250 | 99 | 1 | 705,989 | ||||
| 2013-06-11 | 2013-05-30 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.4000 | 601 | 6 | 705,890 | ||||
| 2013-06-11 | 2013-06-11 | 4 | TERMEER HENRI A | VSTM | Common Stock | D | 9.3537 | 11,356 | 106 | 11,356 | ||||
| 2013-06-06 | 2013-06-04 | 4 | ALDRICH RICHARD | VSTM | Stock Option (Right to Buy) | D | 9.34 | 12,500 | 12,500 | |||||
| 2013-06-06 | 2013-06-04 | 4 | SHERWIN STEPHEN A | VSTM | Stock Option (Right to Buy) | D | 9.34 | 3,116 | 3,116 | |||||
| 2013-06-06 | 2013-06-04 | 4 | SHERWIN STEPHEN A | VSTM | Stock Option (Right to Buy) | D | 9.34 | 12,500 | 12,500 | |||||
| 2013-06-06 | 2013-06-04 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 9.34 | 6,507 | 6,507 | |||||
| 2013-06-06 | 2013-06-04 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 9.34 | 12,500 | 12,500 | |||||
| 2013-06-06 | 2013-06-04 | 4 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 9.34 | 8,870 | 8,870 | |||||
| 2013-06-06 | 2013-06-04 | 4 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 9.34 | 12,500 | 12,500 | |||||
| 2013-06-06 | 2013-06-04 | 4 | TERMEER HENRI A | VSTM | Stock Option (Right to Buy) | D | 9.34 | 12,500 | 12,500 | |||||
| 2013-06-06 | 2013-06-04 | 4 | CLARKE JOHN K | VSTM | Stock Option (Right to Buy) | D | 9.34 | 12,500 | 12,500 | |||||
| 2013-06-06 | 2013-06-04 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 9.34 | 6,507 | 6,507 | |||||
| 2013-06-06 | 2013-06-04 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 9.34 | 12,500 | 12,500 | |||||
| 2013-06-05 | 2013-06-03 | 4 | GREEN JOHN B | VSTM | Stock Option (Right to Buy) | D | 9.76 | 150,000 | 150,000 | |||||
| 2013-05-23 | 2013-05-21 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.2412 | 800 | 7 | 705,289 | ||||
| 2013-05-23 | 2013-05-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.8700 | 91 | 1 | 704,489 | ||||
| 2013-05-23 | 2013-05-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.7900 | 100 | 1 | 704,398 | ||||
| 2013-05-23 | 2013-05-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.7750 | 400 | 4 | 704,298 | ||||
| 2013-05-23 | 2013-05-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.7700 | 200 | 2 | 703,898 | ||||
| 2013-05-23 | 2013-05-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.7000 | 9 | 0 | 703,698 | ||||
| 2013-05-15 | 2013-05-13 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 9.7350 | 25,000 | 243 | 2,280,950 | ||||
| 2013-05-14 | 2013-05-13 | 4 | CHP III LP | VSTM | Common Stock | D | 9.7350 | 25,000 | 243 | 2,280,950 | ||||
| 2013-05-07 | 2013-05-03 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.8281 | 800 | 8 | 703,689 | ||||
| 2013-05-07 | 2013-04-25 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9000 | 513 | 5 | 702,889 | ||||
| 2013-05-07 | 2013-04-25 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.8900 | 287 | 3 | 702,376 | ||||
| 2013-05-03 | 2013-05-01 | 4 | CHP III LP | VSTM | Common Stock | D | 9.6620 | 10,000 | 97 | 2,255,950 | ||||
| 2013-05-03 | 2013-05-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 9.6622 | 10,000 | 97 | 2,255,950 | ||||
| 2013-04-19 | 2013-04-17 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.5300 | 800 | 8 | 702,089 | ||||
| 2013-04-19 | 2013-04-09 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.0000 | 200 | 2 | 701,289 | ||||
| 2013-04-19 | 2013-04-09 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.1500 | 300 | 3 | 701,089 | ||||
| 2013-04-19 | 2013-04-09 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.0500 | 475 | 4 | 700,789 | ||||
| 2013-04-19 | 2013-04-09 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.9750 | 25 | 0 | 700,314 | ||||
| 2013-04-19 | 2013-04-17 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 9.4990 | 5,631 | 53 | 2,245,950 | ||||
| 2013-04-18 | 2013-04-17 | 4 | CHP III LP | VSTM | Common Stock | D | 9.4990 | 5,631 | 53 | 2,245,950 | ||||
| 2013-04-03 | 2013-04-02 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.4400 | -5,842 | -55 | 700,289 | ||||
| 2013-04-03 | 2013-04-01 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.6600 | 107 | 1 | 706,131 | ||||
| 2013-04-03 | 2013-04-01 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.6300 | 93 | 1 | 706,024 | ||||
| 2013-04-03 | 2013-04-01 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.6200 | 100 | 1 | 705,931 | ||||
| 2013-04-03 | 2013-04-01 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.6000 | 300 | 3 | 705,831 | ||||
| 2013-04-03 | 2013-04-01 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.5900 | 100 | 1 | 705,531 | ||||
| 2013-04-03 | 2013-04-01 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.5500 | 100 | 1 | 705,431 | ||||
| 2013-03-25 | 2013-03-21 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.0400 | 800 | 7 | 705,331 | ||||
| 2013-03-25 | 2013-03-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.3800 | 100 | 1 | 704,531 | ||||
| 2013-03-25 | 2013-03-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.3700 | 100 | 1 | 704,431 | ||||
| 2013-03-25 | 2013-03-13 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.3200 | 600 | 6 | 704,331 | ||||
| 2013-03-14 | 2013-03-12 | 4 | Forrester Robert | VSTM | Common Stock | D | 9.3700 | -16,883 | -158 | 253,974 | ||||
| 2013-03-14 | 2013-03-12 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.3700 | -36,864 | -345 | 703,731 | ||||
| 2013-03-14 | 2013-03-12 | 4 | Pachter Jonathan | VSTM | Common Stock | D | 9.3700 | -10,074 | -94 | 75,640 | ||||
| 2013-03-14 | 2013-03-12 | 4 | Paterson Dan | VSTM | Common Stock | D | 9.3700 | -13,427 | -126 | 100,859 | ||||
| 2013-03-07 | 2013-03-05 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.4700 | 800 | 8 | 740,595 | ||||
| 2013-03-07 | 2013-02-25 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9900 | 200 | 2 | 739,795 | ||||
| 2013-03-07 | 2013-02-25 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9800 | 200 | 2 | 739,595 | ||||
| 2013-03-07 | 2013-02-25 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9600 | 41 | 0 | 739,395 | ||||
| 2013-03-07 | 2013-02-25 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9500 | 259 | 3 | 739,354 | ||||
| 2013-03-07 | 2013-02-25 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9300 | 100 | 1 | 739,095 | ||||
| 2013-03-06 | 2013-03-05 | 4 | SHERWIN STEPHEN A | VSTM | Stock Option (Right to Buy) | D | 9.23 | 25,000 | 25,000 | |||||
| 2013-02-14 | 2013-02-06 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 10.0000 | 298 | 3 | 738,995 | ||||
| 2013-02-14 | 2013-02-06 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9100 | 98 | 1 | 738,697 | ||||
| 2013-02-14 | 2013-02-06 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9000 | 100 | 1 | 738,599 | ||||
| 2013-02-14 | 2013-02-06 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.8700 | 200 | 2 | 738,499 | ||||
| 2013-02-14 | 2013-02-06 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.7300 | 4 | 0 | 738,299 | ||||
| 2013-02-14 | 2013-02-06 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.6500 | 100 | 1 | 738,295 | ||||
| 2013-02-14 | 2012-12-28 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 25,826 | 738,195 | ||||||
| 2013-01-31 | 2013-01-29 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 10.0000 | 300 | 3 | 712,369 | ||||
| 2013-01-31 | 2013-01-18 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 10.0000 | 502 | 5 | 712,069 | ||||
| 2013-01-31 | 2013-01-18 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9900 | 198 | 2 | 711,567 | ||||
| 2013-01-31 | 2013-01-18 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.9700 | 100 | 1 | 711,369 | ||||
| 2013-01-17 | 2013-01-15 | 4 | Forrester Robert | VSTM | Stock Option (Right to Buy) | D | 9.85 | 250,000 | 250,000 | |||||
| 2013-01-17 | 2013-01-15 | 4 | Pachter Jonathan | VSTM | Stock Option (Right to Buy) | D | 9.85 | 40,000 | 40,000 | |||||
| 2013-01-17 | 2013-01-15 | 4 | Paterson Dan | VSTM | Stock Option (Right to Buy) | D | 9.85 | 80,000 | 80,000 | |||||
| 2013-01-03 | 2013-01-02 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 9.7300 | 800 | 8 | 711,269 | ||||
| 2013-01-03 | 2012-12-21 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.9100 | 476 | 4 | 710,469 | ||||
| 2013-01-03 | 2012-12-21 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.8700 | 200 | 2 | 709,993 | ||||
| 2013-01-03 | 2012-12-21 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.7900 | 100 | 1 | 709,793 | ||||
| 2013-01-03 | 2012-12-21 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.7700 | 124 | 1 | 709,693 | ||||
| 2013-01-03 | 2012-12-21 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 8.7200 | 100 | 1 | 709,569 | ||||
| 2012-12-21 | 2012-12-18 | 4/A | CHP III LP | VSTM | Common Stock | D | 7.8700 | 6,193 | 49 | 2,240,319 | ||||
| 2012-12-20 | 2012-12-18 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 7.8700 | 6,193 | 49 | 2,240,319 | ||||
| 2012-12-19 | 2012-01-27 | 4 | CHP III LP | VSTM | Common Stock | D | 7.8700 | 6,193 | 49 | 2,240,319 | ||||
| 2012-12-12 | 3 | Paterson Dan | VSTM | Common Stock | D | 114,286 | ||||||||
| 2012-11-27 | 2012-11-26 | 4 | Kauffman Michael | VSTM | Stock Option (Right to Buy) | D | 6.47 | 25,000 | 25,000 | |||||
| 2012-11-27 | 2012-11-26 | 4 | Lawton Alison Frances | VSTM | Stock Option (Right to Buy) | D | 6.47 | 25,000 | 25,000 | |||||
| 2012-11-02 | 2012-11-01 | 4 | Horobin Joanna | VSTM | Stock Option (Right to Buy) | D | 7.93 | 200,000 | 200,000 | |||||
| 2012-09-20 | 2012-09-18 | 4 | Phanstiel S. Louise | VSTM | Stock Option (Right to Buy) | D | 9.68 | 25,000 | 25,000 | |||||
| 2012-09-20 | 2012-09-18 | 4 | Westphal Christoph H | VSTM | Stock Option (Right to Buy) | D | 9.68 | 625,000 | 625,000 | |||||
| 2012-09-20 | 2012-09-18 | 4 | Westphal Christoph H | VSTM | Common Stock | D | 206,612 | 709,469 | ||||||
| 2012-03-08 | 2012-03-06 | 4 | Westphal Christoph H | VSTM | Stock Option (Right to Buy) | D | 11.10 | 12,500 | 12,500 | |||||
| 2012-03-08 | 2012-03-06 | 4 | GADICKE ANSBERT | VSTM | Stock Option (Right to Buy) | D | 11.10 | 12,500 | 12,500 | |||||
| 2012-03-08 | 2012-03-06 | 4 | ALDRICH RICHARD | VSTM | Stock Option (Right to Buy) | D | 11.10 | 12,500 | 12,500 | |||||
| 2012-03-08 | 2012-03-06 | 4 | CLARKE JOHN K | VSTM | Stock Option (Right to Buy) | D | 11.10 | 12,500 | 12,500 | |||||
| 2012-03-08 | 2012-03-06 | 4 | Kraus Stephen | VSTM | Stock Option (Right to Buy) | D | 11.10 | 12,500 | 12,500 | |||||
| 2012-03-08 | 2012-03-06 | 4 | TERMEER HENRI A | VSTM | Stock Option (Right to Buy) | D | 11.10 | 12,500 | 12,500 | |||||
| 2012-03-08 | 2012-03-06 | 4 | Deer Management Co. LLC See note | VSTM | Stock Option (Right to Buy) | I | 11.10 | 12,500 | 12,500 | |||||
| 2012-02-03 | 2012-02-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Series C Preferred Stock | I | -444,444 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Series B Preferred Stock | I | -2,500,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Series A Preferred Stock | I | -4,000,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 10.0000 | 250,000 | 2,500 | 2,234,126 | ||||
| 2012-02-03 | 2012-02-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 126,984 | 1,984,126 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 714,285 | 1,857,142 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | CLARKE JOHN K By CHP III, L.P. | VSTM | Common Stock | I | 1,142,857 | 1,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Forrester Robert | VSTM | Common Stock | D | 142,857 | 270,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Longwood Fund, L.P. | VSTM | Series C Preferred Stock | D | -444,444 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Longwood Fund, L.P. | VSTM | Series B Preferred Stock | D | -3,500,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Longwood Fund, L.P. | VSTM | Series A Preferred Stock | D | -4,000,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Longwood Fund, L.P. | VSTM | Common Stock | D | 10.0000 | 600,000 | 6,000 | 2,869,841 | ||||
| 2012-02-03 | 2012-02-01 | 4 | Longwood Fund, L.P. | VSTM | Common Stock | D | 126,984 | 2,269,841 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Longwood Fund, L.P. | VSTM | Common Stock | D | 1,000,000 | 2,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Longwood Fund, L.P. | VSTM | Common Stock | D | 1,142,857 | 1,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Bioventures V, LP | VSTM | Series C Preferred Stock | I | -266,666 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Bioventures V, LP | VSTM | Series B Preferred Stock | I | -2,500,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Bioventures V, LP | VSTM | Series A Preferred Stock | I | -4,000,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Asset Management Investors BV5 LLC | VSTM | Common Stock | I | 10.0000 | 3,740 | 37 | 3,740 | ||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Bioventures V, LP | VSTM | Common Stock | I | 10.0000 | 96,260 | 963 | 2,029,593 | ||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Bioventures V, LP | VSTM | Common Stock | I | 76,190 | 1,933,333 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Bioventures V, LP | VSTM | Common Stock | I | 714,286 | 1,857,143 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | GADICKE ANSBERT By MPM Bioventures V, LP | VSTM | Common Stock | I | 1,142,857 | 1,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Westphal Christoph H By Longwood Fund, L.P. | VSTM | Series C Preferred Stock | I | -444,444 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Westphal Christoph H By Longwood Fund, L.P. | VSTM | Series B Preferred Stock | I | -3,500,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Westphal Christoph H By Longwood Fund, L.P. | VSTM | Series A Preferred Stock | I | -4,000,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Westphal Christoph H By Longwood Fund, L.P. | VSTM | Common Stock | I | 10.0000 | 600,000 | 6,000 | 2,869,841 | ||||
| 2012-02-03 | 2012-02-01 | 4 | Westphal Christoph H By Longwood Fund, L.P. | VSTM | Common Stock | I | 126,984 | 2,269,841 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Westphal Christoph H By Longwood Fund, L.P. | VSTM | Common Stock | I | 1,000,000 | 2,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Westphal Christoph H By Longwood Fund, L.P. | VSTM | Common Stock | I | 1,142,857 | 1,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | ALDRICH RICHARD By Longwood Fund, L.P. | VSTM | Series C Preferred Stock | I | -444,444 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | ALDRICH RICHARD By Longwood Fund, L.P. | VSTM | Series B Preferred Stock | I | -3,500,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | ALDRICH RICHARD By Longwood Fund, L.P. | VSTM | Series A Preferred Stock | I | -4,000,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | ALDRICH RICHARD By Longwood Fund, L.P. | VSTM | Common Stock | I | 10.0000 | 600,000 | 6,000 | 2,869,841 | ||||
| 2012-02-03 | 2012-02-01 | 4 | ALDRICH RICHARD By Longwood Fund, L.P. | VSTM | Common Stock | I | 126,984 | 2,269,841 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | ALDRICH RICHARD By Longwood Fund, L.P. | VSTM | Common Stock | I | 1,000,000 | 2,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | ALDRICH RICHARD By Longwood Fund, L.P. | VSTM | Common Stock | I | 1,142,857 | 1,142,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Kraus Stephen See footnotes | VSTM | Series A Preferred Stock | I | 0 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Kraus Stephen See footnotes | VSTM | Series C Preferred Stock | I | 0 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Kraus Stephen See footnotes | VSTM | Series B Preferred Stock | I | 0 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Kraus Stephen See footnotes | VSTM | Common Stock | I | 0 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Kraus Stephen See footnotes | VSTM | Common Stock | I | 0 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Kraus Stephen See footnotes | VSTM | Common Stock | I | 0 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Kraus Stephen See footnotes | VSTM | Common Stock | I | 10.0000 | 0 | 0 | 0 | ||||
| 2012-02-03 | 2012-02-01 | 4 | Pachter Jonathan | VSTM | Common Stock | D | 85,714 | 85,714 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Bessemer Venture Partners VII L.P. See Footnotes | VSTM | Series C Preferred Stock | I | -133,333 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Bessemer Venture Partners VII L.P. See Footnotes | VSTM | Series B Preferred Stock | I | -2,500,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Bessemer Venture Partners VII L.P. See Footnotes | VSTM | Series A Preferred Stock | I | -4,000,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Bessemer Venture Partners VII L.P. See Footnotes | VSTM | Common Stock | I | 38,095 | 1,995,237 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Bessemer Venture Partners VII L.P. See Footnotes | VSTM | Common Stock | I | 714,285 | 1,957,142 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Bessemer Venture Partners VII L.P. See Footnotes | VSTM | Common Stock | I | 1,142,857 | 1,242,857 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | Bessemer Venture Partners VII L.P. See Footnotes | VSTM | Common Stock | I | 10.0000 | 100,000 | 1,000 | 100,000 | ||||
| 2012-02-03 | 2012-02-01 | 4 | MPM BIOVENTURES V LLC By MPM BioVentures V, L.P. | VSTM | Seriec C Preferred Stock | I | -266,666 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | MPM BIOVENTURES V LLC By MPM BioVentures V, L.P. | VSTM | Series B Preferred Stock | I | -2,500,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | MPM BIOVENTURES V LLC By MPM BioVentures V, L.P. | VSTM | Series A Preferred Stock | I | -4,000,000 | 0 | ||||||
| 2012-02-03 | 2012-02-01 | 4 | MPM BIOVENTURES V LLC By Funds | VSTM | Common Stoc | I | 10.0000 | 100,000 | 1,000 | 2,033,333 | ||||
| 2012-02-03 | 2012-02-01 | 4 | MPM BIOVENTURES V LLC By MPM BioVentures V, L.P. | VSTM | Common Stock | I | 1,933,333 | 1,933,333 | ||||||
| 2012-01-31 | 2012-01-27 | 4 | CHP III LP | VSTM | Seriec C Preferred Stock | D | -444,444 | 0 | ||||||
| 2012-01-31 | 2012-01-27 | 4 | CHP III LP | VSTM | Series B Preferred Stock | D | -2,500,000 | 0 | ||||||
| 2012-01-31 | 2012-01-27 | 4 | CHP III LP | VSTM | Series A Preferred Stock | D | -4,000,000 | 0 | ||||||
| 2012-01-31 | 2012-01-27 | 4 | CHP III LP | VSTM | Common Stock | D | 10.0000 | 250,000 | 2,500 | 2,234,126 | ||||
| 2012-01-31 | 2012-01-27 | 4 | CHP III LP | VSTM | Common Stock | D | 1,984,126 | 1,984,126 | ||||||
| 2012-01-26 | 3 | Westphal Christoph H | VSTM | Common Stock | D | 502,857 | ||||||||
| 2012-01-26 | 3 | Westphal Christoph H By The Fountain Irrevocable Trust of 2010 | VSTM | Common Stock | I | 125,714 | ||||||||
| 2012-01-26 | 3 | LANDER ERIC S | VSTM | Common Stock | D | 358,892 | ||||||||
| 2012-01-26 | 3 | Forrester Robert | VSTM | Common Stock | D | 128,000 | ||||||||
| 2012-01-26 | 3 | ALDRICH RICHARD | VSTM | Common Stock | D | 407,142 | ||||||||
| 2012-01-26 | 3 | ALDRICH RICHARD By Richard H. Aldrich Irrevocable Trust of 2011 | VSTM | Common Stock | I | 135,714 | ||||||||
| 2012-01-26 | 3 | Gupta Piyush | VSTM | Common Stock | D | 442,857 | ||||||||
| 2012-01-26 | 3 | Weinberg Robert A | VSTM | Common Stock | D | 363,442 |
P
非衍生或衍生證券的公開市場或私下買入
S
非衍生或衍生證券的公開市場或私下賣出
A
公司向內部人員授予、獎勵或以其他方式獲取證券（例如股票期權）
C
衍生工具轉換
D
將證券賣出或轉讓回公司
F
使用從公司收到的證券的一部分來支付行使價或稅務負擔。
G
內部人士贈送或接收他人贈送公司股票
K
股權掉期和類似的避險交易
M
行使或轉換從公司獲得的衍生證券（例如期權）
V
內部人士透過Form 4自願報告的一筆交易
J
其他（附有交易描述的腳註）
