Tappin Matthew
CIK 1986259 · President, Software Products · last filed 2026-03-13
"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
$21.7K
Companies
1
Total Filings
26
Lifetime Open-Market Net
-$428.5K
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 |
|---|---|---|---|---|---|---|---|
| STEM | President, Software Products | 2,823 | $7.70 | $21.7K | -$428.5K | 26 | 2026-03-13 |
Recent Filings · Page 2 of 3
26 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-07-02 | STEM | Grant (A) | — | $0 | EDGAR |
| 2025-06-18 | STEM | Mixed | −19,212 | -$9.9K | EDGAR |
| 2025-03-17 | STEM | Mixed | +23,849 | -$7.6K | EDGAR |
| 2025-02-21 | STEM | Mixed | +16,186 | -$5.1K | EDGAR |
| 2024-11-01 | STEM | Grant (A) | — | $0 | EDGAR |
| 2024-05-30 | STEM | Sell (S) | −1,388 | -$1.8K | EDGAR |
| 2024-05-28 | STEM | Exer (M) | +2,775 | $0 | EDGAR |
| 2024-05-28 | STEM | Grant (A) | — | $0 | EDGAR |
| 2024-03-20 | STEM | Sell (S) | −26,640 | -$48.5K | EDGAR |
| 2024-03-12 | STEM | Sell (S) | −24,899 | -$54.5K | 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.