CIK 0001039399 · Large accelerated filer
FORMFACTOR INC
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- FORM
- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- FY end
- Dec 26
- Incorporated
- DE
- Entity type
- operating
- EIN
- 133711155
- Phone
- 9252904000
- Business address
- 7005 SOUTHFRONT ROAD, LIVERMORE, CA, 94551
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $3,425,065
- in 3 filings, $3.2M under 10b5-1 plans
Net −$3,425,065. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-11-06 | SLESSOR MIKE CEO | Option exercise | +6,031 | 463,243 | ||
| 2026-11-06 | SLESSOR MIKE CEO | Shares withheld for taxes | −3,357 | $81.12 | $272K | 459,886 |
| 2026-11-06 | SLESSOR MIKE CEO | Option exercise | +2,308 | 462,194 | ||
| 2026-11-06 | SLESSOR MIKE CEO | Shares withheld for taxes | −1,285 | $81.12 | $104K | 460,909 |
| 2026-11-06 | SLESSOR MIKE CEO | Option exercise · Restricted Stock Units | −6,031 | 42,217 | ||
| 2026-11-06 | SLESSOR MIKE CEO | Option exercise · Restricted Stock Units | −2,308 | 25,388 | ||
| 2026-11-05 | SLESSOR MIKE CEO | Option exercise | +3,644 | 459,240 | ||
| 2026-11-05 | SLESSOR MIKE CEO | Shares withheld for taxes | −2,028 | $71.76 | $146K | 457,212 |
| 2026-11-05 | SLESSOR MIKE CEO | Option exercise · Restricted Stock Units | −3,644 | 10,932 | ||
| 2026-10-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −2,195 | $124.23 | $273K | 464,499 |
| 2026-10-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −7,703 | $125.36 | $966K | 456,796 |
| 2026-10-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −1,200 | $125.92 | $151K | 455,596 |
| 2026-09-16 | SLESSOR MIKE CEO | Sale 10b5-1 | −8,737 | $104.26 | $911K | 475,467 |
| 2026-09-16 | SLESSOR MIKE CEO | Sale 10b5-1 | −7,773 | $105.12 | $817K | 467,694 |
| 2026-09-16 | SLESSOR MIKE CEO | Sale 10b5-1 | −1,000 | $105.80 | $106K | 466,694 |
| 2026-08-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −2,482 | $128.72 | $319K | 497,724 |
| 2026-08-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −2,892 | $129.55 | $375K | 494,832 |
| 2026-08-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −3,282 | $130.54 | $428K | 491,550 |
| 2026-08-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −1,125 | $131.65 | $148K | 490,425 |
| 2026-08-14 | SLESSOR MIKE CEO | Sale 10b5-1 | −5,535 | $132.50 | $733K | 484,890 |
Page 1 of 8 · 155 trades