Matthew Tappin sold $4,354 of STEM
President, Software Products at STEM, INC.. 402 shares at an average of $10.83, traded Mar 11, 2026, filed Mar 13, 2026.
Score components
- +20RolePresident
- 0Trade size$4k at market
- +5Share of holdings soldSold 12% of holdings
- +15Cluster4 insiders selling within 14 days
- -2010b5-1 planPre-scheduled under a 10b5-1 plan
What happened after comparable sells
Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.
This signal so far: 1m -9.9%, 3m -30.1%, 6m -54.9%.
Price around the trade, and since
From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™
Rows in this filing
Every transaction in Form 4 0001758766-26-000027, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Mar 11, 2026 | SOpen-market sale Common Stock, Par Value $0.0001 Per Share10b5-1 | -402 | $10.83 | $4,354 | 2,823 | Mar 13, 2026 |
Related signals
Other insiders at STEM, INC. and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 5Weak | STEMsell STEM, INC. | Michael James Carlson President, Managed Services | $682 146 shares | -1% | |
| 17Weak | STEMsell STEM, INC. | Brian Musfeldt Chief Financial Officer | $6,086 996 shares | -30% | |
| 20Weak | STEM, INC. | Michael James Carlson President, Managed Services | $11k 1,347 shares | -5% | |
| 15Weak | STEM, INC. | Saul R. Laureles Chief Legal Officer | $5,299 675 shares | -2% | |
| 25Weak | STEM, INC. | Arun Narayanan Chief Executive Officer | $16k 1,996 shares | -9% | |
| 20Weak | STEM, INC. | Matthew Tappin President, Software Products | $7,819 996 shares | -9% | |
| 20Weak | STEM, INC. | Michael James Carlson President, Managed Services | $23k 2,079 shares | -10% | |
| 15Weak | STEM, INC. | Saul R. Laureles Chief Legal Officer | $10k 942 shares | -3% | |
| 42Moderate | STEM, INC. | Arun Narayanan Chief Executive Officer | $57k 5,145 shares | -28% | |
| 25Weak | STEM, INC. | Matthew Tappin President, Software Products | $7,284 655 shares | -17% |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.