MICHAEL JOHN TOMSICEK
CIK 1570392 · Chief Financial Officer · last filed 2026-05-20
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$127.1K
Companies
8
Total Filings
40
Lifetime Open-Market Net
-$5.65M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ACRV | Director | 9,366 | $1.48 | $13.9K | $0 | 4 | 2026-05-20 |
| MIST | Director | 15,000 | $1.27 | $19.1K | $79.8K | 7 | 2025-06-12 |
| CRSP | Chief Financial Officer | 1,891 | $49.80 | $94.2K | -$5.61M | 10 | 2021-08-10 |
| CRISPR Therapeutics AG (PZRX) Delisted | Chief Financial Officer | — | — | — | $0 | 1 | 2017-11-14 |
| ABIOMED INC (ABMD) Delisted | Vice President, CFO | 27,081 | $381.02 | $10.32M | $0 | 3 | 2017-07-18 |
| ABIOMED INC (APOL) Delisted | Vice President, CFO | 26,800 | — | — | $0 | 2 | 2016-05-26 |
| CUBIST PHARMACEUTICALS INC (CBST.Z) Delisted | SVP & Chief Financial Officer | 0 | — | — | -$67.7K | 6 | 2015-01-21 |
| CUBIST PHARMACEUTICALS INC (CBST) Delisted | SVP & Chief Financial Officer | 3,318 | — | — | -$49.6K | 7 | 2013-10-02 |
Recent Filings · Page 4 of 4
40 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2014-08-18 | CUBIST PHARMACEUTICALS INC (CBST.Z) Delisted | Mixed | +841 | -$26.0K | EDGAR |
| 2014-07-02 | CUBIST PHARMACEUTICALS INC (CBST.Z) Delisted | Other (J) | +82 | $5.7K | EDGAR |
| 2014-02-19 | CUBIST PHARMACEUTICALS INC (CBST.Z) Delisted | Mixed | +1,029 | -$41.6K | EDGAR |
| 2013-10-02 | CUBIST PHARMACEUTICALS INC (CBST) Delisted | Other (J) | +74 | $4.7K | EDGAR |
| 2013-09-05 | CUBIST PHARMACEUTICALS INC (CBST) Delisted | Sell (S) | −400 | -$25.6K | EDGAR |
| 2013-08-16 | CUBIST PHARMACEUTICALS INC (CBST) Delisted | Exer (M) | +1,250 | $0 | EDGAR |
| 2013-07-02 | CUBIST PHARMACEUTICALS INC (CBST) Delisted | Other (J) | +402 | $16.1K | EDGAR |
| 2013-05-15 | CUBIST PHARMACEUTICALS INC (CBST) Delisted | Mixed | +1,012 | -$24.0K | EDGAR |
| 2013-04-16 | CUBIST PHARMACEUTICALS INC (CBST) Delisted | Grant (A) | — | $0 | EDGAR |
| 2013-04-02 | CUBIST PHARMACEUTICALS INC (CBST) Delisted | Other (J) | +108 | $5.1K | EDGAR |
Showing 31–40 of 40
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.