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 3 of 3
26 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2024-03-07 | STEM | Sell (S) | −3,837 | -$9.2K | EDGAR |
| 2024-03-05 | STEM | Mixed | +59,213 | -$14.2K | EDGAR |
| 2024-02-21 | STEM | Sell (S) | −6,857 | -$20.9K | EDGAR |
| 2024-02-20 | STEM | Mixed | +13,713 | -$33.6K | EDGAR |
| 2024-02-16 | STEM | Sell (S) | −4,556 | -$14.4K | EDGAR |
| 2024-01-03 | STEM | Mixed | +9,111 | -$18.5K | EDGAR |
Showing 21–26 of 26
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Page 3 of 3
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.