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 |
|---|---|---|---|---|---|---|
| 2026-05-15 | STEVEN-WAISS KELLEY Director | Sale | −5,400 | $125.60 | $678K | 25,179 |
| 2026-05-13 | Titinger Jorge Director | Sale | −4,009 | $128.79 | $516K | 13,489 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −700 | $122.84 | $86K | 455,775 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −1,300 | $123.72 | $161K | 454,475 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −2,984 | $124.71 | $372K | 451,491 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −1,388 | $125.58 | $174K | 450,103 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −398 | $126.59 | $50K | 449,705 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −100 | $127.47 | $13K | 449,605 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −700 | $128.52 | $90K | 448,905 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −700 | $129.33 | $91K | 448,205 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −200 | $130.57 | $26K | 448,005 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −200 | $132.63 | $27K | 447,805 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −66 | $135.73 | $9K | 447,739 |
| 2026-05-13 | SLESSOR MIKE CEO | Sale 10b5-1 | −702 | $136.15 | $96K | 447,037 |
| 2026-05-07 | SLESSOR MIKE CEO | Option exercise | +5,908 | 459,763 | ||
| 2026-05-07 | SLESSOR MIKE CEO | Shares withheld for taxes | −3,288 | $144.68 | $476K | 456,475 |
| 2026-05-07 | SLESSOR MIKE CEO | Option exercise · Restricted Stock Units | −5,908 | 5,908 | ||
| 2026-05-06 | SLESSOR MIKE CEO | Option exercise | +6,031 | 457,212 | ||
| 2026-05-06 | SLESSOR MIKE CEO | Shares withheld for taxes | −3,357 | $149.12 | $501K | 453,855 |
| 2026-05-06 | SLESSOR MIKE CEO | Option exercise · Restricted Stock Units | −6,031 | 54,279 |
Page 5 of 14 · 270 trades