FORM — FORMFACTOR INC
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
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Measured signals that fired on FORM
| date | signal | measured base rate |
|---|---|---|
| 2026-08-19 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
| 2026-08-12 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-30 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-17 | Equal lows taken out structure | -0.64% over 21 days · t = -4.75 · n = 55,661 statistically distinguishable from its control group |
| 2026-07-13 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-07-06 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-14 | SLESSOR MIKE CEO | Open-market sale 10b5-1 plan | 5.5K | 132.50 | 733.4K |
| 2026-08-14 | SLESSOR MIKE CEO | Open-market sale 10b5-1 plan | 3.3K | 130.54 | 428.4K |
| 2026-08-14 | SLESSOR MIKE CEO | Open-market sale 10b5-1 plan | 2.9K | 129.55 | 374.7K |
| 2026-08-14 | SLESSOR MIKE CEO | Open-market sale 10b5-1 plan | 2.5K | 128.72 | 319.5K |
| 2026-08-14 | SLESSOR MIKE CEO | Open-market sale 10b5-1 plan | 1.1K | 131.65 | 148.1K |
| 2026-08-14 | SLESSOR MIKE CEO | Open-market sale 10b5-1 plan | 686 | 133.33 | 91.5K |
| 2026-08-07 | SLESSOR MIKE CEO | Shares withheld for tax | 78.9K | 117.39 | 9.3M |
| 2026-08-07 | SLESSOR MIKE CEO | Shares withheld for tax | 3.3K | 117.39 | 386.0K |
| 2026-08-07 | SLESSOR MIKE CEO | Option exercise | 5.9K | 0.00 | 0 |
| 2026-08-07 | SLESSOR MIKE CEO | Option exercise | 141.8K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 1.2B | 12.2M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 570.3M | 5.9M |
| EARNEST PARTNERS LLC | 472.8M | 4.9M |
| VANGUARD CAPITAL MANAGEMENT LLC | 336.8M | 3.5M |
| STATE STREET CORP | 284.0M | 2.9M |
| BANK OF AMERICA CORP /DE/ | 240.6M | 2.5M |
| Polar Capital Holdings Plc | 222.3M | 2.3M |
| GEODE CAPITAL MANAGEMENT, LLC | 212.2M | 2.2M |
| PRIMECAP MANAGEMENT CO/CA/ | 173.5M | 1.8M |
| SEI INVESTMENTS CO | 163.2M | 1.7M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-17 | 2026-08-14 | on EDGAR ↗ |
| 144 | 2026-08-14 | — | on EDGAR ↗ |
| SCHEDULE 13G/A | 2026-08-14 | — | on EDGAR ↗ |
| 4 | 2026-08-10 | 2026-08-06 | on EDGAR ↗ |
| 4 | 2026-08-10 | 2026-08-06 | on EDGAR ↗ |
| 4 | 2026-08-07 | 2026-08-05 | on EDGAR ↗ |
| 4 | 2026-08-07 | 2026-08-05 | on EDGAR ↗ |
| S-8 | 2026-08-04 | — | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
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