FORM
FormFactor Inc
NASDAQ: FORM · TECHNOLOGY · SEMICONDUCTOR EQUIPMENT & MATERIALS
$110.31
+3.24% today
Updated 2026-10-28
Market cap
$8.20B
P/E ratio
72.42
P/S ratio
9.09x
EPS (TTM)
$1.45
Dividend yield
—
52W range
$41 – $160
Volume
1.5M
FormFactor Inc (FORM) Insider transactions
Net insider activity
Net selling (169,459 shares)
Buy transactions
21
Sell transactions
76
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-14 | SLESSOR, MIKE | Director, CEO | S | 7,703 | $125.36 | $965648.08 |
| 2026-10-14 | SLESSOR, MIKE | Director, CEO | S | 2,195 | $124.23 | $272684.85 |
| 2026-10-14 | SLESSOR, MIKE | Director, CEO | S | 1,200 | $125.92 | $151104.00 |
| 2026-09-16 | SLESSOR, MIKE | Director, CEO | Sale | 8,737 | $104.26 | $910919.62 |
| 2026-09-16 | SLESSOR, MIKE | Director, CEO | Sale | 7,773 | $105.12 | $817097.76 |
| 2026-09-16 | SLESSOR, MIKE | Director, CEO | Sale | 1,000 | $105.80 | $105800.00 |
| 2026-09-03 | STEVEN-WAISS, KELLEY | Director | Sale | 2,100 | $96.10 | $201810.21 |
| 2026-08-14 | SLESSOR, MIKE | Director, CEO | Sale | 5,535 | $132.50 | $733387.50 |
| 2026-08-14 | SLESSOR, MIKE | Director, CEO | Sale | 3,282 | $130.54 | $428432.28 |
| 2026-08-14 | SLESSOR, MIKE | Director, CEO | Sale | 2,892 | $129.55 | $374658.60 |
| 2026-08-14 | SLESSOR, MIKE | Director, CEO | Sale | 2,482 | $128.72 | $319483.04 |
| 2026-08-14 | SLESSOR, MIKE | Director, CEO | Sale | 1,125 | $131.65 | $148106.25 |
| 2026-08-14 | SLESSOR, MIKE | Director, CEO | Sale | 686 | $133.33 | $91464.38 |
| 2026-08-07 | SLESSOR, MIKE | Director, CEO | Sale | 5,908 | — | — |
| 2026-08-07 | SLESSOR, MIKE | Director, CEO | Sale | 141,792 | — | — |
| 2026-08-07 | SLESSOR, MIKE | Director, CEO | Buy | 141,792 | — | — |
| 2026-08-07 | SLESSOR, MIKE | Director, CEO | Sale | 78,908 | $117.39 | $9.26M |
| 2026-08-07 | SLESSOR, MIKE | Director, CEO | Buy | 5,908 | — | — |
| 2026-08-07 | SLESSOR, MIKE | Director, CEO | Sale | 3,288 | $117.39 | $385978.32 |
| 2026-08-06 | SLESSOR, MIKE | Director, CEO | Buy | 27,696 | — | — |
| 2026-08-06 | SLESSOR, MIKE | Director, CEO | Sale | 6,031 | — | — |
| 2026-08-06 | SLESSOR, MIKE | Director, CEO | Buy | 6,031 | — | — |
| 2026-08-06 | SLESSOR, MIKE | Director, CEO | Sale | 3,357 | $115.21 | $386759.97 |
| 2026-08-06 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Buy | 6,924 | — | — |
| 2026-08-06 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 1,099 | — | — |
| 2026-08-06 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Buy | 1,099 | — | — |
| 2026-08-06 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 274 | $115.21 | $31567.54 |
| 2026-08-05 | SLESSOR, MIKE | Director, CEO | Sale | 3,644 | — | — |
| 2026-08-05 | SLESSOR, MIKE | Director, CEO | Buy | 3,644 | — | — |
| 2026-08-05 | SLESSOR, MIKE | Director, CEO | Sale | 2,028 | $114.44 | $232084.32 |
| 2026-08-05 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 521 | — | — |
| 2026-08-05 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Buy | 521 | — | — |
| 2026-08-05 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 130 | $114.44 | $14877.20 |
| 2026-07-15 | SLESSOR, MIKE | Director, CEO | Sale | 1,650 | $117.39 | $193693.50 |
| 2026-07-15 | SLESSOR, MIKE | Director, CEO | Sale | 1,041 | $116.56 | $121338.96 |
| 2026-07-15 | SLESSOR, MIKE | Director, CEO | Sale | 868 | $121.30 | $105288.40 |
| 2026-07-15 | SLESSOR, MIKE | Director, CEO | Sale | 706 | $118.21 | $83456.26 |
| 2026-07-15 | SLESSOR, MIKE | Director, CEO | Sale | 300 | $120.58 | $36174.00 |
| 2026-07-15 | SLESSOR, MIKE | Director, CEO | Sale | 170 | $119.08 | $20243.60 |
| 2026-06-16 | ST, DENNIS THOMAS | Director | Sale | 740 | — | — |
| 2026-06-15 | ST, DENNIS THOMAS | Director | Sale | 2,800 | $151.49 | $424172.00 |
| 2026-06-10 | SLESSOR, MIKE | Director, CEO | Sale | 4,220 | $121.72 | $513658.40 |
| 2026-06-10 | SLESSOR, MIKE | Director, CEO | Sale | 2,500 | $122.63 | $306575.00 |
| 2026-06-10 | SLESSOR, MIKE | Director, CEO | Sale | 1,629 | $123.37 | $200969.73 |
| 2026-06-10 | SLESSOR, MIKE | Director, CEO | Sale | 1,399 | $117.70 | $164662.30 |
| 2026-06-10 | SLESSOR, MIKE | Director, CEO | Sale | 975 | $121.00 | $117975.00 |
| 2026-06-10 | SLESSOR, MIKE | Director, CEO | Sale | 767 | $119.00 | $91273.00 |
| 2026-06-10 | SLESSOR, MIKE | Director, CEO | Sale | 400 | $119.46 | $47784.00 |
| 2026-06-02 | RHODES, SHERI | Director | Sale | 6,328 | $125.40 | $793531.20 |
| 2026-06-02 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 773 | — | — |
| 2026-06-02 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Buy | 773 | — | — |
| 2026-06-02 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 193 | $125.11 | $24146.23 |
| 2026-05-21 | OBREGON-JIMENEZ, REBECA | Director | Sale | 3,828 | $126.48 | $484146.30 |
| 2026-05-20 | WHITE, BRIAN C | Director | Sale | 3,250 | $126.00 | $409500.00 |
| 2026-05-19 | ST, DENNIS THOMAS | Director | Sale | 1,000 | $115.84 | $115839.90 |
| 2026-05-15 | WHITE, BRIAN C | Director | Buy | 1,347 | — | — |
| 2026-05-15 | TITINGER, JORGE | Director | Buy | 1,347 | — | — |
| 2026-05-15 | STEVEN-WAISS, KELLEY | Director | Sale | 5,400 | $125.60 | $678240.54 |
| 2026-05-15 | STEVEN-WAISS, KELLEY | Director | Buy | 1,347 | — | — |
| 2026-05-15 | ST, DENNIS THOMAS | Director | Buy | 1,347 | — | — |
| 2026-05-15 | RHODES, SHERI | Director | Buy | 1,347 | — | — |
| 2026-05-15 | OBREGON-JIMENEZ, REBECA | Director | Buy | 1,347 | — | — |
| 2026-05-13 | TITINGER, JORGE | Director | Sale | 4,009 | $128.79 | $516299.07 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 2,984 | $124.71 | $372134.64 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 1,388 | $125.58 | $174305.04 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 1,300 | $123.72 | $160836.00 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 702 | $136.15 | $95577.30 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 700 | $129.33 | $90531.00 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 398 | $126.59 | $50382.82 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 200 | $132.63 | $26526.00 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 100 | $127.47 | $12747.00 |
| 2026-05-13 | SLESSOR, MIKE | Director, CEO | Sale | 66 | $135.73 | $8958.18 |
| 2026-05-07 | SLESSOR, MIKE | Director, CEO | Sale | 5,908 | — | — |
| 2026-05-07 | SLESSOR, MIKE | Director, CEO | Buy | 5,908 | — | — |
| 2026-05-07 | SLESSOR, MIKE | Director, CEO | Sale | 3,288 | $144.68 | $475707.84 |
| 2026-05-06 | SLESSOR, MIKE | Director, CEO | Sale | 6,031 | — | — |
| 2026-05-06 | SLESSOR, MIKE | Director, CEO | Buy | 6,031 | — | — |
| 2026-05-06 | SLESSOR, MIKE | Director, CEO | Sale | 3,357 | $149.12 | $500595.84 |
| 2026-05-06 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 1,099 | — | — |
| 2026-05-06 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Buy | 1,099 | — | — |
| 2026-05-06 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 274 | $149.12 | $40858.88 |
| 2026-05-05 | SLESSOR, MIKE | Director, CEO | Sale | 3,644 | — | — |
| 2026-05-05 | SLESSOR, MIKE | Director, CEO | Buy | 3,644 | — | — |
| 2026-05-05 | SLESSOR, MIKE | Director, CEO | Sale | 2,028 | $145.00 | $294060.00 |
| 2026-05-05 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 521 | — | — |
| 2026-05-05 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Buy | 521 | — | — |
| 2026-05-05 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 130 | $145.00 | $18850.00 |
| 2026-04-15 | SLESSOR, MIKE | Director, CEO | Sale | 5,432 | $128.56 | $698337.92 |
| 2026-04-15 | SLESSOR, MIKE | Director, CEO | Sale | 2,369 | $127.65 | $302402.85 |
| 2026-04-15 | SLESSOR, MIKE | Director, CEO | Sale | 1,826 | $125.24 | $228688.24 |
| 2026-04-15 | SLESSOR, MIKE | Director, CEO | Sale | 900 | $126.58 | $113922.00 |
| 2026-04-15 | SLESSOR, MIKE | Director, CEO | Sale | 767 | $129.22 | $99111.74 |
| 2026-03-18 | SLESSOR, MIKE | Director, CEO | Sale | 5,495 | $95.21 | $523178.95 |
| 2026-03-18 | SLESSOR, MIKE | Director, CEO | Sale | 2,832 | $95.73 | $271107.36 |
| 2026-03-18 | SLESSOR, MIKE | Director, CEO | Sale | 1,900 | $94.10 | $178790.00 |
| 2026-03-05 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 3,462 | $90.42 | $313034.04 |
| 2026-03-02 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 773 | — | — |
| 2026-03-02 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Buy | 773 | — | — |
| 2026-03-02 | MCKINNIS, ARIC BRENDAN | CFO, SVP Global Finance | Sale | 193 | $99.70 | $19242.10 |
| 2026-02-24 | WHITE, BRIAN C | Director | Sale | 2,300 | $100.01 | $230023.00 |
Frequently asked questions
Are FORM insiders buying or selling?
Over the transactions on record, FORM insiders have been net sellers, with about $25.19M in stock sold across 76 sales. The entries tagged as buys are stock grants and option exercises recorded at $0, not open-market purchases.
Does insider selling at FORM mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which FORM insiders are selling the most?
Recent selling is concentrated in a few names. SLESSOR, MIKE accounts for the largest share on record, with about $20.88M sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.