Mike Slessor sold $1.8M of FORM
CEO at FORMFACTOR INC. 17,510 shares at an average of $104.73, traded Sep 16, 2026, filed Sep 17, 2026.
Score components
- +25RoleCEO
- +25Trade size$1.8M at market
- 0Share of holdings soldSold 3.6% of holdings
- +8Cluster2 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.
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 0001628280-26-062602, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -8,737 | $104.26 | $911k | 475,467 | 27 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -7,773 | $105.12 | $817k | 467,694 | 27 d ago |
| Sep 16, 2026 | SOpen-market sale Common Stock10b5-1 | -1,000 | $105.80 | $106k | 466,694 | 27 d ago |
Related signals
Other insiders at FORMFACTOR INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 35Weak | FORMFACTOR INC | Kelley Steven-Waiss director | $202k 2,100 shares | -8% | |
| 30Weak | FORMFACTOR INC | Mike Slessor CEO | $2.1M 16,002 shares | -3% | |
| 24Weak | FORMFACTOR INC | Mike Slessor CEO | $560k 4,735 shares | -1% | |
| 46Moderate | FORMFACTOR INC | Thomas St Dennis director | $424k 2,800 shares | -9% | |
| 45Moderate | FORMFACTOR INC | Mike Slessor CEO | $1.4M 11,890 shares | -3% | |
| 72Notable | FORMFACTOR INC | Sheri Rhodes director | $794k 6,328 shares | -54% | |
| 58Moderate | FORMFACTOR INC | Rebeca Obregon-Jimenez director | $484k 3,828 shares | -33% | |
| 40Moderate | FORMFACTOR INC | Thomas St Dennis director | $116k 1,000 shares | -3% | |
| 56Moderate | FORMFACTOR INC | Brian C White director | $410k 3,250 shares | -27% | |
| 55Moderate | FORMFACTOR INC | Kelley Steven-Waiss director | $678k 5,400 shares | -18% |
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.