FORMFACTOR (FORM) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$139.67
+1.9% on the day
+264.1% over 12 months
52-week range $38.14 – $159.93
Share price and insider trades
FORM closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$22.1M
Insiders buying0
Insiders selling9
FORMFACTOR insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 9 sold $22.1M of FORM stock on the open market.
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FORM insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $4.7M | 16 |
| Q2 2026 | — | 0 | $7.5M | 31 |
| Q1 2026 | — | 0 | $8.8M | 19 |
| Q4 2025 | — | 0 | $1.1M | 6 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day3.1×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 FORMFACTOR INC insiders reported open-market purchases totaling $0, while 9 insiders reported sales totaling $22.1M. 53 of 72 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 17SEC | Mike SlessorCEO | Sell Plan | 8,737475,467 held (−2%) | $104.26 | $911K | +34.0% | — |
| Sep 17SEC | Mike SlessorCEO | Sell Plan | 7,773467,694 held (−2%) | $105.12 | $817K | +32.9% | — |
| Sep 17SEC | Mike SlessorCEO | Sell Plan | 1,000466,694 held (−0%) | $105.80 | $106K | +32.0% | — |
| Sep 4SEC | Kelley Steven-waissDirector | Sell | 2,10024,426 held (−8%) | $96.10 | $202K | +45.3% | — |
| Aug 17SEC | Mike SlessorCEO | Sell Plan | 5,535484,890 held (−1%) | $132.50 | $733K | +5.4% | — |
| Aug 17SEC | Mike SlessorCEO | Sell Plan | 3,282491,550 held (−1%) | $130.54 | $428K | +7.0% | — |
| Aug 17SEC | Mike SlessorCEO | Sell Plan | 2,892494,832 held (−1%) | $129.55 | $375K | +7.8% | — |
| Aug 17SEC | Mike SlessorCEO | Sell Plan | 2,482497,724 held (−0%) | $128.72 | $319K | +8.5% | — |
| Aug 17SEC | Mike SlessorCEO | Sell Plan | 1,125490,425 held (−0%) | $131.65 | $148K | +6.1% | — |
| Aug 17SEC | Mike SlessorCEO | Sell Plan | 686484,204 held (−0%) | $133.33 | $91K | +4.8% | — |
| Jul 16SEC | Mike SlessorCEO | Sell Plan | 1,650432,456 held (−0%) | $117.39 | $194K | +19.0% | — |
| Jul 16SEC | Mike SlessorCEO | Sell Plan | 1,041434,106 held (−0%) | $116.56 | $121K | +19.8% | — |
| Jul 16SEC | Mike SlessorCEO | Sell Plan | 868430,412 held (−0%) | $121.30 | $105K | +15.1% | — |
| Jul 16SEC | Mike SlessorCEO | Sell Plan | 706431,750 held (−0%) | $118.21 | $83K | +18.2% | — |
| Jul 16SEC | Mike SlessorCEO | Sell Plan | 300431,280 held (−0%) | $120.58 | $36K | +15.8% | — |
| Jul 16SEC | Mike SlessorCEO | Sell Plan | 170431,580 held (−0%) | $119.08 | $20K | +17.3% | — |
| Jun 16SEC | Dennis Thomas StDirector | Sell | 2,80029,073 held (−9%) | $151.49 | $424K | -7.8% | — |
| Jun 11SEC | Mike SlessorCEO | Sell Plan | 4,220439,276 held (−1%) | $121.72 | $514K | +14.7% | — |
| Jun 11SEC | Mike SlessorCEO | Sell Plan | 2,500436,776 held (−1%) | $122.63 | $307K | +13.9% | — |
| Jun 11SEC | Mike SlessorCEO | Sell Plan | 1,629435,147 held (−0%) | $123.37 | $201K | +13.2% | — |
| Jun 11SEC | Mike SlessorCEO | Sell Plan | 1,399445,638 held (−0%) | $117.70 | $165K | +18.7% | — |
| Jun 11SEC | Mike SlessorCEO | Sell Plan | 975443,496 held (−0%) | $121.00 | $118K | +15.4% | — |
| Jun 11SEC | Mike SlessorCEO | Sell Plan | 767444,871 held (−0%) | $119.00 | $91K | +17.4% | — |
| Jun 11SEC | Mike SlessorCEO | Sell Plan | 400444,471 held (−0%) | $119.46 | $48K | +16.9% | — |
| Jun 4SEC | Sheri RhodesDirector | Sell | 6,3285,375 held (−54%) | $125.40 | $794K | +11.4% | — |
| May 22SEC | Rebeca Obregon-jimenezDirector | Sell | 3,8287,875 held (−33%) | $126.48 | $484K | +10.4% | — |
| May 21SEC | Brian C WhiteDirector | Sell | 3,2508,653 held (−27%) | $126.00 | $410K | +10.8% | — |
| May 21SEC | Dennis Thomas StDirector | Sell | 1,00031,873 held (−3%) | $115.84 | $116K | +20.6% | — |
| May 15SEC | Kelley Steven-waissDirector | Sell | 5,40025,179 held (−18%) | $125.60 | $678K | +11.2% | — |
| May 15SEC | Jorge TitingerDirector | Sell | 4,00913,489 held (−23%) | $128.79 | $516K | +8.4% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 2,984451,491 held (−1%) | $124.71 | $372K | +12.0% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 1,388450,103 held (−0%) | $125.58 | $174K | +11.2% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 1,300454,475 held (−0%) | $123.72 | $161K | +12.9% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 702447,037 held (−0%) | $136.15 | $96K | +2.6% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 700448,205 held (−0%) | $129.33 | $91K | +8.0% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 700448,905 held (−0%) | $128.52 | $90K | +8.7% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 700455,775 held (−0%) | $122.84 | $86K | +13.7% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 398449,705 held (−0%) | $126.59 | $50K | +10.3% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 200447,805 held (−0%) | $132.63 | $27K | +5.3% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 200448,005 held (−0%) | $130.57 | $26K | +7.0% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 100449,605 held (−0%) | $127.47 | $13K | +9.6% | — |
| May 14SEC | Mike SlessorCEO | Sell Plan | 66447,739 held (−0%) | $135.73 | $9K | +2.9% | — |
| Apr 15SEC | Mike SlessorCEO | Sell Plan | 5,432450,332 held (−1%) | $128.56 | $698K | +8.6% | — |
| Apr 15SEC | Mike SlessorCEO | Sell Plan | 2,369455,764 held (−1%) | $127.65 | $302K | +9.4% | — |
| Apr 15SEC | Mike SlessorCEO | Sell Plan | 1,826459,033 held (−0%) | $125.24 | $229K | +11.5% | — |
| Apr 15SEC | Mike SlessorCEO | Sell Plan | 900458,133 held (−0%) | $126.58 | $114K | +10.3% | — |
| Apr 15SEC | Mike SlessorCEO | Sell Plan | 767449,565 held (−0%) | $129.22 | $99K | +8.1% | — |
| Mar 18SEC | Mike SlessorCEO | Sell Plan | 5,495463,691 held (−1%) | $95.21 | $523K | +46.7% | — |
| Mar 18SEC | Mike SlessorCEO | Sell Plan | 2,832460,859 held (−1%) | $95.73 | $271K | +45.9% | — |
| Mar 18SEC | Mike SlessorCEO | Sell Plan | 1,900469,186 held (−0%) | $94.10 | $179K | +48.4% | — |
| Mar 6SEC | Aric Brendan MckinnisCFO | Sell Plan | 3,46211,140 held (−24%) | $90.42 | $313K | +54.5% | — |
| Feb 25SEC | Brian C WhiteDirector | Sell | 2,30010,556 held (−18%) | $100.01 | $230K | +39.7% | — |
| Feb 18SEC | Mike SlessorCEO | Sell Plan | 4,934473,982 held (−1%) | $93.97 | $464K | +48.6% | — |
| Feb 18SEC | Mike SlessorCEO | Sell Plan | 2,896471,086 held (−1%) | $94.79 | $275K | +47.3% | — |
| Feb 18SEC | Mike SlessorCEO | Sell Plan | 834478,916 held (−0%) | $92.85 | $77K | +50.4% | — |
| Feb 12SEC | Kevin J BrewerDirector | Sell | 3,0008,105 held (−27%) | $96.20 | $289K | +45.2% | — |
| Feb 11SEC | Sheri RhodesDirector | Sell | 7,63410,356 held (−42%) | $92.61 | $707K | +50.8% | — |
| Feb 11SEC | Dennis Thomas StDirector | Sell | 5,60133,356 held (−14%) | $93.71 | $525K | +49.0% | — |
| Feb 11SEC | Kelley Steven-waissDirector | Sell | 2,20030,579 held (−7%) | $93.70 | $206K | +49.1% | — |
| Feb 11SEC | Dennis Thomas StDirector | Sell | 1,83031,526 held (−5%) | $94.24 | $172K | +48.2% | — |
| Feb 10SEC | Brian C WhiteDirector | Sell | 5,50012,856 held (−30%) | $90.95 | $500K | +53.6% | — |
| Feb 10SEC | Rebeca Obregon-jimenezDirector | Sell | 2,77010,356 held (−21%) | $95.82 | $265K | +45.8% | — |
| Feb 10SEC | Jorge TitingerDirector | Sell | 2,00017,498 held (−10%) | $88.84 | $178K | +57.2% | — |
| Jan 15SEC | Mike SlessorCEO | Sell Plan | 6,976479,019 held (−1%) | $76.43 | $533K | +82.7% | — |
| Jan 15SEC | Mike SlessorCEO | Sell Plan | 6,112472,907 held (−1%) | $77.24 | $472K | +80.8% | — |
| Jan 6SEC | Mike SlessorCEO | Sell Plan | 39,606485,995 held (−8%) | $65.00 | $2.6M | +114.9% | — |
| Dec 17SEC | Mike SlessorCEO | Sell Plan | 5,606527,664 held (−1%) | $56.19 | $315K | +148.6% | — |
| Dec 17SEC | Mike SlessorCEO | Sell Plan | 2,063525,601 held (−0%) | $56.82 | $117K | +145.8% | — |
| Dec 2SEC | Kelley Steven-waissDirector | Sell | 2,70032,779 held (−8%) | $55.97 | $151K | +149.5% | — |
| Nov 19SEC | Mike SlessorCEO | Sell Plan | 4,739536,934 held (−1%) | $49.65 | $235K | +181.3% | — |
| Nov 19SEC | Mike SlessorCEO | Sell Plan | 3,664533,270 held (−1%) | $50.60 | $185K | +176.0% | — |
| Nov 17SEC | Dennis Thomas StDirector | Sell | 2,00038,957 held (−5%) | $49.85 | $100K | +180.2% | — |
Insiders at FORMFACTOR INC
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Mike SlessorCEO | — | $14.8M | Sep 17, 2026 | — |
| Sheri RhodesDirector | — | $1.5M | Jun 4, 2026 | — |
| Dennis Thomas StDirector | — | $1.3M | Jun 16, 2026 | — |
| Kelley Steven-waissDirector | — | $1.2M | Sep 4, 2026 | — |
| Brian C WhiteDirector | — | $1.1M | May 21, 2026 | — |
| Rebeca Obregon-jimenezDirector | — | $750K | May 22, 2026 | — |
| Jorge TitingerDirector | — | $694K | May 15, 2026 | — |
| Aric Brendan MckinnisCFO | — | $313K | Mar 6, 2026 | — |
| Kevin J BrewerDirector | — | $289K | Feb 12, 2026 | — |
FORM stock: common questions
Are FORMFACTOR INC insiders buying FORM stock?
In the past 12 months, 0 insiders reported open-market purchases of FORM worth $0.
Are FORMFACTOR INC insiders selling FORM stock?
9 insiders reported sales worth $22.1M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is FORM's 52-week range?
Over the past year FORM has traded between $38.14 and $159.93. It last closed at $139.67 on Oct 9, 2026.