Mark N. Tompkins
CIK 1455971 · last filed 2026-05-27
"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
$95.74M
Companies
3
Total Filings
62
Lifetime Open-Market Net
-$23.81M
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.
Recent Filings · Page 3 of 7
62 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-03-31 | ALMU | Conv (C) | +200,000 | $700.0K | EDGAR |
| 2024-11-05 | — | Other (J) | −3,550,000 | $0 | |
| 2023-08-02 | — | Mixed | −3,062,500 | $0 | |
| 2023-01-13 | — | Buy (P) | +83,333 | $250.0K | |
| 2021-11-16 | — | Buy (P) | −250,000 | -$500.0K | |
| 2021-10-25 | — | Other (J) | −2,300,000 | $0 | |
| 2021-06-29 | — | Buy (P) | +357,500 | $715.0K | |
| 2021-06-23 | — | Other (J) | −2,475,000 | $0 | |
| 2021-06-02 | AMST | Sell (S) | −53,316 | -$131.2K | EDGAR |
| 2021-05-27 | AMST | Sell (S) | −47,497 | -$109.1K | EDGAR |
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.