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 4 of 7
62 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-05-24 | AMST | Sell (S) | −69,871 | -$154.8K | EDGAR |
| 2021-05-19 | AMST | Sell (S) | −68,225 | -$151.4K | EDGAR |
| 2021-05-14 | AMST | Sell (S) | −107,424 | -$248.3K | EDGAR |
| 2021-05-11 | AMST | Sell (S) | −36,622 | -$91.8K | EDGAR |
| 2021-05-06 | AMST | Sell (S) | −76,133 | -$217.8K | EDGAR |
| 2021-05-03 | AMST | Sell (S) | −61,058 | -$167.4K | EDGAR |
| 2021-04-28 | AMST | Sell (S) | −28,419 | -$83.8K | EDGAR |
| 2021-04-20 | AMST | Sell (S) | −35,627 | -$110.5K | EDGAR |
| 2021-04-14 | AMST | Sell (S) | −54,083 | -$178.9K | EDGAR |
| 2021-04-09 | AMST | Sell (S) | −54,450 | -$194.2K | 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.