FORMFACTOR INC insider trading
FORM$149.15+0.71 (+0.48%)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+278.4%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
- MSMike Slessor0.5974%
- SSShai Shahar0.0716%
- TSThomas St Dennis0.0363%
- KSKelley Steven-Waiss0.0313%
- JTJorge Titinger0.019%
- ABAric Brendan McKinnis0.0181%
- RORebeca Obregon-Jimenez0.0168%
- BCBrian C. White0.0111%
- KJKevin J. Brewer0.0104%
- SRSheri Rhodes0.0069%
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| FORM | Mike Slessor | Open market sell$106K | -0.2% | $105.80 | $106K | Sep 16, 2026 | Sep 17, 2026 |
| FORM | Mike Slessor | Open market sell$817K | -1.6% | $105.12 | $817K | Sep 16, 2026 | Sep 17, 2026 |
| FORM | Mike Slessor | Open market sell$911K | -1.8% | $104.26 | $911K | Sep 16, 2026 | Sep 17, 2026 |
| FORM | Kelley Steven-Waiss | Open market sell$202K | -7.9% | $96.10 | $202K | Sep 3, 2026 | Sep 4, 2026 |
| FORM | Mike Slessor | Open market sell$91.5K | -0.1% | $133.33 | $91.5K | Aug 14, 2026 | Aug 17, 2026 |
| FORM | Mike Slessor | Open market sell$733K | -1.1% | $132.50 | $733K | Aug 14, 2026 | Aug 17, 2026 |
| FORM | Mike Slessor | Open market sell$148K | -0.2% | $131.65 | $148K | Aug 14, 2026 | Aug 17, 2026 |
| FORM | Mike Slessor | Open market sell$428K | -0.7% | $130.54 | $428K | Aug 14, 2026 | Aug 17, 2026 |
| FORM | Mike Slessor | Open market sell$375K | -0.6% | $129.55 | $375K | Aug 14, 2026 | Aug 17, 2026 |
| FORM | Mike Slessor | Open market sell$319K | -0.5% | $128.72 | $319K | Aug 14, 2026 | Aug 17, 2026 |
| FORM | Mike Slessor | Open market sell$105K | -0.2% | $121.30 | $105K | Jul 15, 2026 | Jul 16, 2026 |
| FORM | Mike Slessor | Open market sell$36.2K | -0.1% | $120.58 | $36.2K | Jul 15, 2026 | Jul 16, 2026 |
| FORM | Mike Slessor | Open market sell$20.2K | 0.0% | $119.08 | $20.2K | Jul 15, 2026 | Jul 16, 2026 |
| FORM | Mike Slessor | Open market sell$83.5K | -0.2% | $118.21 | $83.5K | Jul 15, 2026 | Jul 16, 2026 |
| FORM | Mike Slessor | Open market sell$194K | -0.4% | $117.39 | $194K | Jul 15, 2026 | Jul 16, 2026 |
| FORM | Mike Slessor | Open market sell$121K | -0.2% | $116.56 | $121K | Jul 15, 2026 | Jul 16, 2026 |
| FORM | Thomas St Dennis | Open market sell$424K | -8.8% | $151.49 | $424K | Jun 15, 2026 | Jun 16, 2026 |
| FORM | Mike Slessor | Open market sell$201K | -0.4% | $123.37 | $201K | Jun 10, 2026 | Jun 11, 2026 |
| FORM | Mike Slessor | Open market sell$307K | -0.6% | $122.63 | $307K | Jun 10, 2026 | Jun 11, 2026 |
| FORM | Mike Slessor | Open market sell$514K | -1.0% | $121.72 | $514K | Jun 10, 2026 | Jun 11, 2026 |
| FORM | Mike Slessor | Open market sell$118K | -0.2% | $121.00 | $118K | Jun 10, 2026 | Jun 11, 2026 |
| FORM | Mike Slessor | Open market sell$47.8K | -0.1% | $119.46 | $47.8K | Jun 10, 2026 | Jun 11, 2026 |
| FORM | Mike Slessor | Open market sell$91.3K | -0.2% | $119.00 | $91.3K | Jun 10, 2026 | Jun 11, 2026 |
| FORM | Mike Slessor | Open market sell$165K | -0.3% | $117.70 | $165K | Jun 10, 2026 | Jun 11, 2026 |
| FORM | Sheri Rhodes | Open market sell$794K | -54.1% | $125.40 | $794K | Jun 2, 2026 | Jun 4, 2026 |
| FORM | Rebeca Obregon-Jimenez | Open market sell$484K | -32.7% | $126.48 | $484K | May 21, 2026 | May 22, 2026 |
| FORM | Brian C. White | Open market sell$410K | -27.3% | $126.00 | $410K | May 20, 2026 | May 21, 2026 |
| FORM | Thomas St Dennis | Open market sell$116K | -3.0% | $115.84 | $116K | May 19, 2026 | May 21, 2026 |
| FORM | Kelley Steven-Waiss | Open market sell$678K | -17.7% | $125.60 | $678K | May 15, 2026 | May 15, 2026 |
| FORM | Jorge Titinger | Open market sell$516K | -22.9% | $128.79 | $516K | May 13, 2026 | May 15, 2026 |
| FORM | Mike Slessor | Open market sell$95.6K | -0.2% | $136.15 | $95.6K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$8.96K | 0.0% | $135.73 | $8.96K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$26.5K | 0.0% | $132.63 | $26.5K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$26.1K | 0.0% | $130.57 | $26.1K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$90.5K | -0.2% | $129.33 | $90.5K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$90K | -0.2% | $128.52 | $90K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$12.7K | 0.0% | $127.47 | $12.7K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$50.4K | -0.1% | $126.59 | $50.4K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$174K | -0.3% | $125.58 | $174K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$372K | -0.7% | $124.71 | $372K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$161K | -0.3% | $123.72 | $161K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$86K | -0.2% | $122.84 | $86K | May 13, 2026 | May 14, 2026 |
| FORM | Mike Slessor | Open market sell$99.1K | -0.2% | $129.22 | $99.1K | Apr 15, 2026 | Apr 15, 2026 |
| FORM | Mike Slessor | Open market sell$698K | -1.2% | $128.56 | $698K | Apr 15, 2026 | Apr 15, 2026 |
| FORM | Mike Slessor | Open market sell$302K | -0.5% | $127.65 | $302K | Apr 15, 2026 | Apr 15, 2026 |
| FORM | Mike Slessor | Open market sell$114K | -0.2% | $126.58 | $114K | Apr 15, 2026 | Apr 15, 2026 |
| FORM | Mike Slessor | Open market sell$229K | -0.4% | $125.24 | $229K | Apr 15, 2026 | Apr 15, 2026 |
| FORM | Mike Slessor | Open market sell$271K | -0.6% | $95.73 | $271K | Mar 18, 2026 | Mar 18, 2026 |
| FORM | Mike Slessor | Open market sell$523K | -1.2% | $95.21 | $523K | Mar 18, 2026 | Mar 18, 2026 |
| FORM | Mike Slessor | Open market sell$179K | -0.4% | $94.10 | $179K | Mar 18, 2026 | Mar 18, 2026 |