MICHAEL JOHN TOMSICEK
CIK 1570392 · Chief Financial Officer · last filed 2026-05-20
MICHAEL JOHN TOMSICEK is a Chief Financial Officer who has filed 40 SEC Form 4 insider transactions across 8 companies since 2013. The most recent filing, for ACRV, was dated May 20, 2026. Across all open-market trades the lifetime net is −$5.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $127.1K across reported positions.
"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.
$127.1K
8
40
-$5.65M
Holdings By Company
| 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
40 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-20 | ACRV | Grant (A) | +9,366 | $0 | EDGAR |
| 2025-06-17 | ACRV | Grant (A) | — | $0 | EDGAR |
| 2025-06-12 | MIST | Grant (A) | — | $0 | EDGAR |
| 2024-08-29 | MIST | Grant (A) | — | $0 | EDGAR |
| 2024-06-24 | ACRV | Grant (A) | — | $0 | EDGAR |
| 2023-06-09 | MIST | Grant (A) | — | $0 | EDGAR |
| 2022-11-16 | ACRV | Grant (A) | — | $0 | EDGAR |
| 2022-10-21 | MIST | Buy (P) | +15,000 | $79.8K | EDGAR |
| 2022-08-11 | MIST | Grant (A) | — | $0 | EDGAR |
| 2021-08-10 | CRSP | Mixed | — | -$3.02M | EDGAR |