Mike Slessor sold $432k of FORM
CEO at FORMFACTOR INC. 7,669 shares at an average of $56.36, traded Dec 17, 2025, filed Dec 17, 2025.
Score components
- +25RoleCEO
- +17Trade size$432k at market
- 0Share of holdings soldSold 1.4% of holdings
- 0ClusterNo other insider 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 +45.5%, 3m +78.7%, 6m +160.0%.
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 0001628280-25-057756, as filed. Open on EDGAR
| Date | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|
| Dec 17, 2025 | SOpen-market sale Common Stock10b5-1 | -5,606 | $56.19 | $315k | 527,664 | Dec 17, 2025 |
| Dec 17, 2025 | SOpen-market sale Common Stock10b5-1 | -2,063 | $56.82 | $117k | 525,601 | Dec 17, 2025 |
Related signals
Other insiders at FORMFACTOR INC and this insider’s other filings.
| Score | Company | Insider | Value | Holdings | Filed |
|---|---|---|---|---|---|
| 38Weak | FORMFACTOR INC | Mike Slessor CEO | $1.8M 17,510 shares | -4% | |
| 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% |
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.