FormFactor Inc (FORM) shareholders
FORMNasdaqSemiconductors & Related DevicesFiscal year ends December 26
Financials through Q3 FY2026, quarter ended Sep 26, 2026Last filing: 10-Q on Nov 3, 2026Score 13/3022% above fair value
$92.32−3.46 (-3.61%)
Close on Nov 12, 2026Market cap $7.21BP/E 42.2Yield –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
92.4%
72M of 78M shares
Institutional holders
508
160 new, 40 sold out
Net institutional buying
-2M
In Q2 2026
Insider trades, 12 months
0 buys · 75 sales
Net sold $23.44M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 9,682,927 | 12.40% | 13G (passive) amendment | Jun 30, 2026 |
| Vanguard Portfolio Management | 5,939,602 | 7.61% | 13G (passive) | Mar 31, 2026 |
| Vanguard Capital Management | 4,065,830 | 5.21% | 13G (passive) | Mar 31, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of FORM | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 10,484,409 | 13.42% | $1.68B | −1,763,165 | 0.02% |
| Vanguard Portfolio Management LLC | 5,242,203 | 6.71% | $838.39M | −637,805 | 0.04% |
| Earnest Partners LLC | 3,763,214 | 4.82% | $601.85M | −1,111,951 | 2.17% |
| Vanguard Capital Management LLC | 3,515,254 | 4.50% | $562.19M | +42,763 | 0.01% |
| State Street Corp | 2,581,477 | 3.30% | $412.86M | −346,662 | 0.01% |
| Polar Capital Holdings Plc | 2,146,098 | 2.75% | $343.23M | −146,215 | 0.81% |
| Geode Capital Management, LLC | 1,833,001 | 2.35% | $294.52M | −354,864 | 0.02% |
| Bank Of America Corp /De/ | 1,783,638 | 2.28% | $285.26M | −697,421 | 0.02% |
| Primecap Management Co/Ca/ | 1,690,114 | 2.16% | $270.30M | −98,530 | 0.16% |
| Invesco Ltd. | 1,578,533 | 2.02% | $252.45M | +340,170 | 0.02% |
| Alliancebernstein L.P. | 1,457,060 | 1.87% | $141.32M | −774,473 | 0.05% |
| Dimensional Fund Advisors LP | 1,418,910 | 1.82% | $226.84M | +6,791 | 0.04% |
| Sei Investments Co | 1,343,056 | 1.72% | $214.79M | −339,266 | 0.19% |
| Jane Street Group, LLC | 1,309,873 | 1.68% | $209.49M | +384,256 | 0.02% |
| Fuller & Thaler Asset Management, Inc. | 1,184,611 | 1.52% | $189.45M | +47,255 | 0.52% |
| Norges Bank | 1,024,043 | 1.31% | $163.78M | New | 0.02% |
| Morgan Stanley | 899,947 | 1.15% | $143.93M | −408,971 | 0.01% |
| Gf Fund Management Co. Ltd. | 776,000 | 0.99% | $124.11M | +764,000 | 1.49% |
| Charles Schwab Investment Management Inc | 750,027 | 0.96% | $119.95M | −197,517 | 0.02% |
| Price T Rowe Associates Inc /Md/ | 721,754 | 0.92% | $115.43M | −118,877 | 0.01% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 508 | 72M | 92.4% | 160 / 146 | 168 / 40 | 11M | 14M |
| Q1 2026 | 396 | 75M | 95.5% | 107 / 131 | 119 / 40 | 21M | 13M |
| Q4 2025 | 335 | 77M | 98.9% | 94 / 101 | 106 / 30 | 12M | 10M |
| Q3 2025 | 277 | 75M | 96.3% | 41 / 92 | 102 / 61 | 7M | 8M |
| Q2 2025 | 301 | 76M | 97.8% | 56 / 108 | 102 / 28 | 9M | 8M |
| Q1 2025 | 277 | 76M | 96.9% | 40 / 106 | 91 / 60 | 7M | 6M |
| Q4 2024 | 300 | 76M | 97.3% | 43 / 119 | 101 / 60 | 8M | 6M |
| Q3 2024 | 320 | 74M | 95.2% | 57 / 124 | 102 / 46 | 18M | 7M |
| Q2 2024 | 310 | 75M | 96.6% | 69 / 90 | 116 / 21 | 6M | 9M |
| Q1 2024 | 264 | 78M | 100.0% | 45 / 95 | 89 / 26 | 6M | 6M |
| Q4 2023 | 246 | 78M | 100.0% | 39 / 70 | 105 / 23 | 7M | 5M |
| Q3 2023 | 231 | 76M | 97.8% | 28 / 77 | 85 / 29 | 6M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
413 funds held FORM in Q2 2026, 57% of their shares through ETFs. Each fund counts once per quarter, from its quarter-end report.
| Fund | Shares | % of FORM | Value | % of fund | As of |
|---|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 4,694,824 | 6.01% | $750.84M | 0.67% | Jun 30, 2026 |
| Vanguard Total Stock Market Index Fund | 2,476,100 | 3.17% | $396.00M | 0.02% | Jun 30, 2026 |
| Vanguard Small-Cap Index Fund | 1,787,235 | 2.29% | $285.83M | 0.15% | Jun 30, 2026 |
| Vanguard Information Technology Index Fund | 1,142,318 | 1.46% | $142.32M | 0.08% | May 31, 2026 |
| Vanguard Capital Opportunity Fund | 1,044,841 | 1.34% | $167.10M | 0.51% | Jun 30, 2026 |
| Vanguard Small-Cap Growth Index Fund | 1,030,099 | 1.32% | $164.74M | 0.35% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 893,755 | 1.14% | $142.94M | 0.15% | Jun 30, 2026 |
| Fullerthaler Behavioral Small-Cap Growth | 780,000 | 1.00% | $124.75M | 2.02% | Jun 30, 2026 |
| State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF | 715,246 | 0.92% | $114.39M | 0.68% | Jun 30, 2026 |
| iShares S&P Small-Cap 600 Growth ETF | 700,530 | 0.90% | $112.04M | 1.36% | Jun 30, 2026 |
| Vanguard Mid-Cap Growth Fund | 682,709 | 0.87% | $72.50M | 2.69% | Jul 31, 2026 |
| Invesco S&P SmallCap Momentum ETF | 565,831 | 0.72% | $60.09M | 1.98% | Jul 31, 2026 |
| Harbor Small Cap Value Fund | 561,807 | 0.72% | $59.66M | 2.38% | Jul 31, 2026 |
| Invesco Semiconductors ETF | 557,346 | 0.71% | $59.19M | 2.49% | Jul 31, 2026 |
| Vanguard Tax-Managed Small-Cap Fund | 502,173 | 0.64% | $80.31M | 0.70% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Mike Slessor | CEO, Director | 460,909 | 0.59% | Nov 9, 2026 |
| Aric Brendan McKinnis | CFO, SVP Global Finance | 15,485 | 0.02% | Nov 9, 2026 |
| Shai Shahar | CFO, SVP Global Finance | 57,610 | 0.07% | Aug 8, 2025 |
| Kelley Steven-Waiss | Director | 24,426 | 0.03% | Sep 4, 2026 |
| Dennis Thomas St | Director | 74,333 | 0.10% | Jun 16, 2026 |
| Sheri Rhodes | Director | 5,375 | 0.01% | Jun 4, 2026 |
| Rebeca Obregon-Jimenez | Director | 7,875 | 0.01% | May 22, 2026 |
| Brian C. White | Director | 8,653 | 0.01% | May 21, 2026 |
| Jorge Titinger | Director | 14,836 | 0.02% | May 19, 2026 |
| Kevin J. Brewer | Director | 8,105 | 0.01% | Feb 12, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Aric Brendan McKinnis CFO, SVP Global Finance | Nov 6, 2026 | Tax withholding | −228 | $81.12 | $18.50K | 15,485 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Nov 6, 2026 | Option exercise | +577 | – | – | 15,713 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Nov 6, 2026 | Tax withholding | −433 | $81.12 | $35.12K | 15,136 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Nov 6, 2026 | Option exercise | +1,099 | – | – | 15,569 |
| Mike Slessor CEO, Director | Nov 6, 2026 | Tax withholding | −1,285 | $81.12 | $104.24K | 460,909 |
| Mike Slessor CEO, Director | Nov 6, 2026 | Option exercise | +2,308 | – | – | 462,194 |
| Mike Slessor CEO, Director | Nov 6, 2026 | Tax withholding | −3,357 | $81.12 | $272.32K | 459,886 |
| Mike Slessor CEO, Director | Nov 6, 2026 | Option exercise | +6,031 | – | – | 463,243 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Nov 5, 2026 | Tax withholding | −206 | $71.76 | $14.78K | 14,470 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Nov 5, 2026 | Option exercise | +521 | – | – | 14,676 |
| Mike Slessor CEO, Director | Nov 5, 2026 | Tax withholding | −2,028 | $71.76 | $145.53K | 457,212 |
| Mike Slessor CEO, Director | Nov 5, 2026 | Option exercise | +3,644 | – | – | 459,240 |
| Mike Slessor CEO, Director | Oct 14, 2026 | Sale(10b5-1 plan) | −1,200 | $125.92 | $151.10K | 455,596 |
| Mike Slessor CEO, Director | Oct 14, 2026 | Sale(10b5-1 plan) | −7,703 | $125.36 | $965.65K | 456,796 |
| Mike Slessor CEO, Director | Oct 14, 2026 | Sale(10b5-1 plan) | −2,195 | $124.23 | $272.68K | 464,499 |
| Mike Slessor CEO, Director | Sep 16, 2026 | Sale(10b5-1 plan) | −7,773 | $105.12 | $817.10K | 467,694 |
| Mike Slessor CEO, Director | Sep 16, 2026 | Sale(10b5-1 plan) | −8,737 | $104.26 | $910.92K | 475,467 |
| Mike Slessor CEO, Director | Sep 16, 2026 | Sale(10b5-1 plan) | −1,000 | $105.80 | $105.80K | 466,694 |
| Kelley Steven-Waiss Director | Sep 3, 2026 | Sale | −2,100 | $96.10 | $201.81K | 24,426 |
| Mike Slessor CEO, Director | Aug 14, 2026 | Sale(10b5-1 plan) | −3,282 | $130.54 | $428.43K | 491,550 |
| Mike Slessor CEO, Director | Aug 14, 2026 | Sale(10b5-1 plan) | −5,535 | $132.50 | $733.39K | 484,890 |
| Mike Slessor CEO, Director | Aug 14, 2026 | Sale(10b5-1 plan) | −1,125 | $131.65 | $148.11K | 490,425 |
| Mike Slessor CEO, Director | Aug 14, 2026 | Sale(10b5-1 plan) | −686 | $133.33 | $91.46K | 484,204 |
| Mike Slessor CEO, Director | Aug 14, 2026 | Sale(10b5-1 plan) | −2,892 | $129.55 | $374.66K | 494,832 |
| Mike Slessor CEO, Director | Aug 14, 2026 | Sale(10b5-1 plan) | −2,482 | $128.72 | $319.48K | 497,724 |
| Mike Slessor CEO, Director | Aug 7, 2026 | Tax withholding | −3,288 | $117.39 | $385.98K | 500,206 |
| Mike Slessor CEO, Director | Aug 7, 2026 | Option exercise | +5,908 | – | – | 503,494 |
| Mike Slessor CEO, Director | Aug 7, 2026 | Tax withholding | −78,908 | $117.39 | $9.26M | 497,586 |
| Mike Slessor CEO, Director | Aug 7, 2026 | Option exercise | +141,792 | – | – | 576,494 |
| Mike Slessor CEO, Director | Aug 6, 2026 | Tax withholding | −3,357 | $115.21 | $386.76K | 434,702 |
| Mike Slessor CEO, Director | Aug 6, 2026 | Option exercise | +6,031 | – | – | 438,059 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Aug 6, 2026 | Option exercise | +1,099 | – | – | 14,426 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Aug 6, 2026 | Tax withholding | −274 | $115.21 | $31.57K | 14,152 |
| Mike Slessor CEO, Director | Aug 5, 2026 | Option exercise | +3,644 | – | – | 434,056 |
| Mike Slessor CEO, Director | Aug 5, 2026 | Tax withholding | −2,028 | $114.44 | $232.08K | 432,028 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Aug 5, 2026 | Option exercise | +521 | – | – | 13,457 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Aug 5, 2026 | Tax withholding | −130 | $114.44 | $14.88K | 13,327 |
| Mike Slessor CEO, Director | Jul 15, 2026 | Sale(10b5-1 plan) | −170 | $119.08 | $20.24K | 431,580 |
| Mike Slessor CEO, Director | Jul 15, 2026 | Sale(10b5-1 plan) | −1,041 | $116.56 | $121.34K | 434,106 |
| Mike Slessor CEO, Director | Jul 15, 2026 | Sale(10b5-1 plan) | −868 | $121.30 | $105.29K | 430,412 |
| Mike Slessor CEO, Director | Jul 15, 2026 | Sale(10b5-1 plan) | −300 | $120.58 | $36.17K | 431,280 |
| Mike Slessor CEO, Director | Jul 15, 2026 | Sale(10b5-1 plan) | −706 | $118.21 | $83.46K | 431,750 |
| Mike Slessor CEO, Director | Jul 15, 2026 | Sale(10b5-1 plan) | −1,650 | $117.39 | $193.69K | 432,456 |
| Dennis Thomas St Director | Jun 16, 2026 | Gift | −740 | – | – | 28,333 |
| Dennis Thomas St Director | Jun 15, 2026 | Sale | −2,800 | $151.49 | $424.17K | 29,073 |
| Mike Slessor CEO, Director | Jun 10, 2026 | Sale(10b5-1 plan) | −1,399 | $117.70 | $164.66K | 445,638 |
| Mike Slessor CEO, Director | Jun 10, 2026 | Sale(10b5-1 plan) | −975 | $121.00 | $117.98K | 443,496 |
| Mike Slessor CEO, Director | Jun 10, 2026 | Sale(10b5-1 plan) | −400 | $119.46 | $47.78K | 444,471 |
| Mike Slessor CEO, Director | Jun 10, 2026 | Sale(10b5-1 plan) | −1,629 | $123.37 | $200.97K | 435,147 |
| Mike Slessor CEO, Director | Jun 10, 2026 | Sale(10b5-1 plan) | −767 | $119.00 | $91.27K | 444,871 |
| Mike Slessor CEO, Director | Jun 10, 2026 | Sale(10b5-1 plan) | −2,500 | $122.63 | $306.58K | 436,776 |
| Mike Slessor CEO, Director | Jun 10, 2026 | Sale(10b5-1 plan) | −4,220 | $121.72 | $513.66K | 439,276 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Jun 2, 2026 | Option exercise | +773 | – | – | 13,129 |
| Aric Brendan McKinnis CFO, SVP Global Finance | Jun 2, 2026 | Tax withholding | −193 | $125.11 | $24.15K | 12,936 |
| Sheri Rhodes Director | Jun 2, 2026 | Sale | −6,328 | $125.40 | $793.53K | 5,375 |
| Rebeca Obregon-Jimenez Director | May 21, 2026 | Sale | −3,828 | $126.48 | $484.17K | 7,875 |
| Brian C. White Director | May 20, 2026 | Sale | −3,250 | $126.00 | $409.50K | 8,653 |
| Dennis Thomas St Director | May 19, 2026 | Sale | −1,000 | $115.84 | $115.84K | 31,873 |
| Sheri Rhodes Director | May 15, 2026 | Award | +1,347 | – | – | 11,703 |
| Jorge Titinger Director | May 15, 2026 | Award | +1,347 | – | – | 14,836 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Short interest
Shares sold short and not yet bought back, as of Oct 30, 2026 (FINRA, reported twice a month)
Short % of float
3.64%
3M shares short
Days to cover
1.7
At 2M shares a day
Change since last report
+7.6%
From 3M shares
Short volume, 20 days
44.6%
Of volume reported to FINRA
Shares sold short, last 12 months
Short sale volume counts trades marked short on any given day, including market-maker hedging, so it runs far higher than the share of FormFactor's stock actually held short. Settlement fails (shares not delivered on time) peaked at 51,559 shares on Aug 31, 2026 over the last 90 days.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Mike Slessor Officer, Director | Oct 14, 2026 | 11,098 | $1.39M | Oct 14, 2026 | Performance Shares |
| Mike Slessor Officer, Director | Sep 16, 2026 | 17,510 | $1.83M | Sep 16, 2026 | Restricted Stock |
| Kelley Steven-Waiss Director | Sep 3, 2026 | 2,100 | $201.81K | Sep 3, 2026 | Restricted Stock |
| Mike Slessor Officer, Director | Aug 14, 2026 | 16,002 | $2.10M | Aug 14, 2026 | Performance Shares |
| Mike Slessor Officer, Director | Jul 15, 2026 | 4,735 | $560.20K | Jul 15, 2026 | Restricted Stock |
| Dennis Thomas St Director | Jun 15, 2026 | 2,800 | $424.17K | Jun 15, 2026 | Restricted Stock |
| Mike Slessor Officer, Director | Jun 10, 2026 | 11,890 | $1.44M | Jun 10, 2026 | Restricted Stock |
| Kevin J. Brewer Former Director | Jun 4, 2026 | 2,528 | $326.11K | Jun 4, 2026 | Restricted Stock Vesting Under a Registered Plan |
| Sheri Rhodes Director | Jun 2, 2026 | 6,328 | $793.53K | Jun 2, 2026 | Restricted Stock |
| Kevin J. Brewer Former Director | May 26, 2026 | 4,000 | $547.41K | May 26, 2026 | Restricted stock vesting under a registered plan |
| Rebeca Obregon-Jimenez Director | May 21, 2026 | 3,828 | $484.15K | May 21, 2026 | Restricted Stock |
| Brian C. White Director | May 20, 2026 | 3,250 | $409.50K | May 20, 2026 | Restricted Stock |
| Kevin J Brewer Revocable Trust Board Member | May 20, 2026 | 1,577 | $195.98K | May 20, 2026 | Restricted stock vesting under a registered plan |
| Dennis Thomas St Director | May 19, 2026 | 1,000 | $115.84K | May 19, 2026 | Restricted Stock |
| Kelley Steven-Waiss Director | May 15, 2026 | 5,400 | $678.24K | May 15, 2026 | Restricted Stock |
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