Every Form 4 that FormFactor Inc. (FORM) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow FORM and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full FORM filings page.
FORMFACTOR INC (FORM) reported that CEO and director Mike Slessor sold a total of 17,510 shares of common stock on September 16, 2026 in open-market or private transactions. The sales were made under a Rule 10b5-1 trading plan adopted on August 19, 2025.
The transactions included 8,737 shares at a weighted average price of $104.26 (range $103.65–$104.63), 7,773 shares at a weighted average price of $105.12 (range $104.66–$105.615), and 1,000 shares at $105.80.
FORMFACTOR INC (FORM) director Kelley Steven-Waiss reported selling 2,100 shares of common stock on September 3, 2026 at an average price of $96.10 per share in an open-market or private transaction. After this sale, the director directly holds 24,426 shares of FORM common stock. No Rule 10b5-1 trading plan is reported.
FORMFACTOR INC CEO Mike Slessor reported selling 16,002 shares of common stock on August 14, 2026 in six open-market transactions. The sales occurred automatically under a Rule 10b5-1 trading plan adopted on August 19, 2025, at weighted-average prices with ranges from $128.14 to $133.53 per share.
FORMFACTOR INC CEO and director Mike Slessor reported equity award activity. 141,792 Performance-based Restricted Stock Units vested after the Compensation Committee determined performance goals for the 7/1/2023–6/30/2026 period were met, and were settled into an equal number of common shares, with 78,908 shares delivered or withheld for payment of tax liability. Additional Restricted Stock Units previously granted also settled into 5,908 common shares, with 3,288 shares delivered or withheld for payment of tax liability. Separately, Slessor received a new grant of 27,696 Restricted Stock Units on August 6, 2026, vesting in twelve quarterly installments from November 6, 2026 through August 6, 2029, subject to continued employment and existing change of control and severance provisions.
McKinnis Aric Brendan reported acquisition or exercise transactions in this Form 4 filing.
FORMFACTOR INC reported that CFO and SVP Global Finance Aric Brendan McKinnis received a grant of 6,924 Restricted Stock Units on August 6, 2026. These RSUs vest in twelve quarterly installments from November 6, 2026 through August 6, 2029 and will be settled in common stock as they vest. Unvested units are forfeited if employment ends before the applicable vesting date, subject to any change of control severance or other equity agreements.
FormFactor CEO Mike Slessor reported settlement of 9,675 Restricted Stock Units into common stock on August 5–6, 2026, reflecting quarterly vesting from August 2024 and August 2025 RSU grants. To cover taxes, 5,385 shares of common stock were withheld at prices around $114–$115 per share. Unvested RSUs are forfeitable if employment ends before future vesting dates, subject to existing change-of-control and severance agreements.
FormFactor Inc CFO and SVP Global Finance Aric Brendan McKinnis reported vesting and settlement of 1,620 Restricted Stock Units into an equal number of common shares on August 5–6, 2026. These RSUs came from grants dated August 5, 2024 and November 6, 2025 that vest in twelve quarterly installments and settle in stock on or after each vesting date. On those dates, 404 shares of common stock were withheld at prices of $114.44 and $115.21 per share to cover tax withholding obligations. The filing indicates these transactions were not made under a Rule 10b5-1 trading plan.
FORMFACTOR INC CEO and director Mike Slessor reported open-market sales of 4,735 shares of common stock on July 15, 2026, executed in six transactions at weighted-average prices within disclosed ranges between about $115.995 and $121.38 per share.
The sales occurred automatically under a pre-arranged Rule 10b5-1 trading plan adopted on August 19, 2025.
FORMFACTOR INC director Thomas St Dennis reported two transactions involving the company’s Common Stock. On June 15, 2026, he sold 2,800 shares in an open-market transaction at $151.49 per share. On June 16, 2026, he made a bona fide gift of 740 shares to a charitable foundation.
After these transactions, St Dennis directly holds 28,333 shares of FORMFACTOR INC Common Stock. The gift transfer involves no sale proceeds and reflects a charitable contribution rather than a market trade.
FORMFACTOR INC CEO Mike Slessor reported open-market sales of a total of 11,890 shares of Common Stock on June 10, 2026. The sales occurred in multiple trades at prices ranging from about $117.70 to $123.37 per share pursuant to a pre-arranged Rule 10b5-1 trading plan adopted on August 19, 2025.
FORMFACTOR INC CFO Aric Brendan McKinnis reported routine equity-compensation transactions. On June 2, 2026, 773 Restricted Stock Units converted into an equal number of common shares as part of a scheduled vesting from a June 2, 2023 grant.
The company withheld 193 of these common shares to cover tax withholding obligations at a reference price of $125.11 per share. These are not open-market purchases or sales, but standard RSU settlement and tax-withholding events tied to ongoing quarterly vesting.
FORMFACTOR INC director Sheri Rhodes sold shares in the company. On June 2, 2026, she completed an open-market sale of 6,328 shares of Common Stock at a price of $125.40 per share. Following this transaction, she directly owns 5,375 FORMFACTOR shares.
FORMFACTOR INC director Rebeca Obregon-Jimenez sold shares in an open-market transaction. She sold 3,828 Restricted Stock Units at a price of $126.475 per unit on May 21, 2026. After this sale, she directly owns 7,875 units according to the filing.
FORMFACTOR INC director Brian C. White sold shares of company stock in the open market. On the reported date, he sold 3,250 shares of Common Stock at a price of $126.00 per share in an open-market transaction. After this sale, he continued to hold 8,653 shares directly.
FormFactor Inc. director Thomas St. Dennis reported an open-market sale of 1,000 shares of Common Stock on May 19, 2026 at a weighted average price of $115.8399 per share. After this transaction, he directly holds 31,873 shares of FormFactor common stock.
The sale price reflects trades executed between $115.80 and $115.84 per share, according to the filing footnote. The transaction represents a small portion of his remaining stake and is reported as a routine Form 4 insider sale.
FormFactor Inc. director St Dennis Thomas received a grant of 1,347 restricted stock units (RSUs) as equity compensation. The award was approved by the Board in April 2026 and carries no purchase price, so the shares were acquired at $0.00 per share.
Following this grant, Thomas directly holds 32,873 shares of FormFactor common stock. The RSUs vest monthly and become fully exercisable on the earlier of the 2027 Annual Meeting of Stockholders or May 15, 2027. Any unvested RSUs are forfeited if he stops providing services, subject to the company’s Equity Grant Policy for Outside Directors and applicable agreements.
Obregon-Jimenez Rebeca reported acquisition or exercise transactions in this Form 4 filing.
FORMFACTOR INC director Rebeca Obregon-Jimenez received a grant of 1,347 Restricted Stock Units. The award, approved by the board in April 2026, increases her direct holdings to 11,703 shares-equivalent. The RSUs vest monthly and become fully exercisable on the earlier of the 2027 Annual Meeting of Stockholders or May 15, 2027. Unvested units are forfeited if she ceases providing services, subject to the company’s Equity Grant Policy for Outside Directors and any applicable agreements.
Rhodes Sheri reported acquisition or exercise transactions in this Form 4 filing.
FORMFACTOR INC director Sheri Rhodes received a grant of 1,347 restricted stock units (RSUs) of Common Stock as equity compensation. The award was approved by the Board in April 2026 and increases her direct holdings to 11,703 shares.
The RSUs vest monthly and become fully exercisable on the earlier of the company’s 2027 Annual Meeting of Stockholders or May 15, 2027. Any unvested RSUs are forfeited if she ceases to provide services, subject to the company’s Equity Grant Policy for Outside Directors and any applicable agreements.
STEVEN-WAISS KELLEY reported acquisition or exercise transactions in this Form 4 filing.
FormFactor Inc. director Kelley Steven-Waiss received a grant of 1,347 shares of Common Stock in the form of restricted stock units approved by the Board in April 2026. Following this award, the director holds 26,526 shares directly. The RSUs vest monthly and become exercisable on the earlier of the 2027 Annual Meeting of Stockholders or May 15, 2027, and any unvested units are forfeited if the director ceases providing services, subject to the company’s Equity Grant Policy for Outside Directors and any applicable agreements.
Titinger Jorge reported acquisition or exercise transactions in this Form 4 filing.
FORMFACTOR INC director Jorge Titinger received a grant of 1,347 shares of common stock on May 15, 2026 as a stock award, with no cash price per share. After this award, he directly holds 14,836 shares. The grant was made as restricted stock units approved by the Board in April 2026, which vest monthly until the earlier of the 2027 Annual Meeting of Stockholders or May 15, 2027. Any unvested units are forfeited if he ceases providing services, subject to the company’s Equity Grant Policy for Outside Directors and any applicable agreements.
WHITE BRIAN C reported acquisition or exercise transactions in this Form 4 filing.
FORMFACTOR INC director Brian C. White received an equity grant of 1,347 shares of Common Stock in the form of restricted stock units (RSUs). The grant was approved by the Board in April 2026 and increased his direct holdings to 11,903 shares following the award.
The RSUs vest monthly and become fully exercisable on the earlier of the company’s 2027 Annual Meeting of Stockholders or May 15, 2027. Any RSUs that have not vested will be forfeited without consideration if he ceases to provide services, subject to the company’s Equity Grant Policy for Outside Directors and any applicable agreements.
FORMFACTOR INC director Jorge Titinger reported an open-market sale of company stock. On May 13, 2026, he sold 4,009 shares of Common Stock at an average price of $128.785 per share. After this transaction, he directly holds 13,489 shares of FORMFACTOR INC Common Stock.
FORMFACTOR INC director STEVEN-WAISS KELLEY reported an open-market sale of company stock. On May 15, 2026, the director sold 5,400 shares of Common Stock at $125.6001 per share. After this transaction, the director directly holds 25,179 shares of FormFactor common stock.
FORMFACTOR INC CEO Mike Slessor reported a sale of 9,438 shares of Common Stock. The Form 4 shows 12 open-market sale transactions on May 13, 2026, with reported per-share prices such as $136.15, $135.73, and $122.84.
A footnote states the sales occurred automatically under a pre-arranged Rule 10b5-1 trading plan adopted on August 19, 2025. After these transactions, Slessor directly holds 447,037 shares of FormFactor common stock.
FORMFACTOR INC CEO Mike Slessor reported routine equity compensation activity involving restricted stock units. On May 7, 2026, 5,908 Restricted Stock Units converted into an equal number of common shares on a 1-for-1 basis. In connection with this vesting, 3,288 common shares were withheld to satisfy tax withholding obligations, rather than sold in the open market. Following these transactions, Slessor directly held 456,475 shares of FORMFACTOR common stock. The RSUs were part of a grant dated August 7, 2023 that vests in twelve quarterly installments through August 7, 2026, and unvested units are forfeited if employment ends, subject to separate change-of-control and severance arrangements.
FORMFACTOR INC CEO Mike Slessor reported routine equity compensation activity involving restricted stock units. On May 5 and 6, 2026, restricted stock units vested and were settled into a total of 9,675 shares of common stock, reflecting 1-for-1 RSU-to-share conversion.
To cover tax withholding obligations tied to these vestings, 5,385 common shares were automatically withheld and disposed of, a non-market tax-withholding mechanism rather than an open-market sale. After these transactions, Slessor directly held about 453,855 shares of common stock and 54,279 restricted stock units remained outstanding, which are scheduled to vest in quarterly installments through August 2027 and August 2028, subject to continued employment and existing severance and equity agreements.
FormFactor Inc. CFO Aric Brendan McKinnis reported routine equity compensation activity involving restricted stock units. On May 5 and 6, 2026, restricted stock units converted into a total of 1,620 shares of common stock, reflecting scheduled vesting of prior RSU grants.
To cover tax withholding obligations on these vestings, 404 shares of common stock were withheld by the issuer, rather than sold in the open market. After these transactions, McKinnis directly held 12,356 shares of common stock. The RSUs vest in twelve quarterly installments and are forfeitable if employment ends before the applicable vesting dates, subject to existing severance and equity agreements.
FORMFACTOR INC CEO Mike Slessor reported open-market sales of company Common Stock in multiple transactions on April 15, 2026, totaling 11,294 shares. The shares were sold at weighted average prices ranging from about $125.24 to $129.22 per share under a pre-arranged Rule 10b5-1 trading plan adopted on August 19, 2025.
After these sales, Slessor continues to hold 449,565 shares of FormFactor Common Stock directly, indicating he retains a substantial equity stake in the company despite the planned disposals.
FORMFACTOR INC CEO Mike Slessor reported open-market sales of 10,227 shares of Common Stock. On March 18, 2026, he sold 1,900 shares at $94.10, 5,495 shares at $95.21, and 2,832 shares at $95.73. A footnote states the sales occurred automatically under a Rule 10b5-1 trading plan adopted on August 19, 2025. Following these transactions, he directly holds 460,859 shares.
FORMFACTOR INC Chief Financial Officer Aric Brendan McKinnis reported an open-market sale of 3,462 shares of common stock on March 5, 2026 at $90.42 per share. The transaction occurred automatically under a Rule 10b5-1 trading plan adopted on December 4, 2025, and left him with 11,140 shares of directly owned common stock.
FormFactor Inc. CFO Aric Brendan McKinnis reported equity award activity involving restricted stock units and common shares. On March 2, 2026, 773 restricted stock units were converted into 773 shares of common stock at $0.00 per share as part of an RSU settlement.
On the same date, 193 common shares were disposed of at $99.70 per share to cover tax withholding obligations tied to the vesting of these RSUs. The RSUs were granted on June 2, 2023 and vest in twelve quarterly installments from September 2, 2023 through June 2, 2026, subject to continued employment and certain severance and change‑of‑control arrangements.
FORMFACTOR INC director Brian C. White sold shares in the company. On February 24, 2026, he completed an open-market sale of 2,300 shares of common stock at $100.01 per share. After this transaction, he directly owned 10,556 shares of FORMFACTOR INC common stock.
FORMFACTOR INC CEO Mike Slessor reported open-market sales of 8,664 shares of common stock. The transactions occurred on February 18, 2026 in three tranches at weighted average prices of about $92.85, $93.97, and $94.79 per share.
The filing states the sales were executed automatically under a Rule 10b5-1 trading plan adopted on August 19, 2025. After these sales, Slessor directly holds 471,086 shares of FormFactor common stock.
FormFactor director Kevin J. Brewer sold 3,000 shares of common stock in an open-market transaction. The sale took place on February 11, 2026 at a price of $96.20 per share.
After this transaction, Brewer directly holds 8,105 FormFactor common shares.
FormFactor Inc. CEO Mike Slessor reported equity compensation activity involving restricted stock units and common shares on February 9, 2026. He exercised or converted 5,908 restricted stock units, which settled into the same number of common shares at $0 per share as part of his compensation plan.
To cover tax withholding obligations on this vesting, 3,288 common shares were withheld at a price of $94.88 per share. After these transactions, he directly beneficially owned 479,750 shares of common stock and 11,816 restricted stock units, which continue to vest in quarterly installments through August 7, 2026, subject to continued employment.
FormFactor Inc. director Thomas St. Dennis reported open-market sales of company common stock. On 02/10/2026, he sold 5,601 shares at $93.7144 per share and 1,830 shares at $94.2406 per share, for a total of 7,431 shares sold. After these transactions, he directly owned 31,526 FormFactor shares.
FormFactor, Inc. director Sheri Rhodes reported an open‑market sale of company stock. On 02/10/2026, she sold 7,634 shares of Common Stock at a price of $92.6085 per share. After this transaction, she directly owned 10,356 shares of FormFactor Common Stock.
FormFactor Inc. director Kelley Steven-Waiss reported an open-market sale of common stock. On February 10, 2026, Steven-Waiss sold 2,200 shares of FormFactor common stock at an average price of $93.6995 per share. After this transaction, Steven-Waiss directly owned 30,579 shares of FormFactor common stock.
FormFactor Inc. director Rebeca Obregon-Jimenez reported the sale of 2,770 restricted stock units on 02/09/2026 at a price of $95.8201 per unit.
Following this transaction, she directly beneficially owned 10,356 restricted stock units, as disclosed in the Form 4 filing.
FormFactor Inc. director Brian C. White reported a sale of company stock. On February 9, 2026, he sold 5,500 shares of Common Stock at a price of $90.95 per share. After this transaction, he directly owned 12,856 shares of FormFactor common stock.
FormFactor Inc. director Jorge Titinger reported a sale of company stock. On February 9, 2026, he sold 2,000 shares of Common Stock at $88.84 per share, coded as an open-market or private sale (transaction code S).
After this transaction, Titinger directly beneficially owned 17,498 FormFactor shares. The filing is a standard Form 4 insider transaction report and does not disclose any derivative securities activity.
FormFactor Inc.'s CFO, Aric McKinnis, reported routine equity compensation activity involving restricted stock units (RSUs) and related tax withholding. On February 5, 2026, 521 RSUs converted on a 1-for-1 basis into common shares, and 162 shares were withheld to cover tax obligations, leaving 13,259 common shares directly owned. On February 6, 2026, a further 1,099 RSUs converted into common shares, with 336 shares withheld for taxes, resulting in 14,022 common shares held directly after these transactions. Following the settlements, McKinnis also directly held 3,126 RSUs after the February 5 event and 12,089 RSUs after the February 6 event, all of which vest in quarterly installments and are forfeitable if employment ends before the applicable vesting dates.
FormFactor Inc. CEO Mike Slessor reported routine equity compensation activity over two days in early February 2026. On February 5, 2026, 3,644 restricted stock units (RSUs) converted into the same number of common shares at an exercise price of $0, with 2,095 of those shares withheld to cover tax obligations at $83.87 per share. On February 6, 2026, another 6,031 RSUs similarly converted to common stock for $0, with 3,357 shares withheld for taxes at $90.29 per share. Following these transactions, Slessor directly held 477,130 shares of common stock and continued to hold RSUs that vest quarterly through August 2027 and August 2028, subject to continued employment.
FormFactor, Inc. insider filing reports planned stock sales by CEO Mike Slessor. On January 15, 2026, Slessor, who is both CEO and a director, sold 6,976 shares of FormFactor common stock at a weighted average price of $76.43 and an additional 6,112 shares at a weighted average price of $77.24.
The filing states these transactions occurred automatically under a Rule 10b5-1 trading plan adopted on August 19, 2025, which is designed to pre-arrange sales according to preset terms. After these sales, Slessor directly beneficially owned 472,907 shares of FormFactor common stock, as reported in the form.
FormFactor Inc. CEO and director Mike Slessor reported automatic stock sales under a pre-arranged Rule 10b5-1 trading plan. On December 17, 2025, he sold 5,606 shares of common stock at a weighted average price of $56.19 and an additional 2,063 shares at a weighted average price of $56.82.
These transactions, totaling 7,669 shares, were executed pursuant to a Rule 10b5-1 trading plan adopted on August 19, 2025. After these sales, Slessor beneficially owned 525,601 shares of FormFactor common stock directly.
FormFactor, Inc.
FormFactor, Inc. (FORM) CEO and director Mike Slessor reported open-market sales of company stock. On 11/19/2025, he sold 4,739 shares of common stock at a weighted average price of $49.65, and an additional 3,664 shares at a weighted average price of $50.60. Both transactions are coded as sales and were executed under a Rule 10b5-1 trading plan that was adopted on August 19, 2025. After these transactions, Slessor beneficially owned 533,270 shares of FormFactor common stock in direct ownership.
FormFactor Inc. director trade: A director of FormFactor Inc. (ticker FORM) reported an open-market sale of 2,000 shares of common stock on 11/17/2025 at a price of $49.8465 per share. After this transaction, the reporting person beneficially owns 38,957 shares, held directly.
FormFactor (FORM) CEO and Director Mike Slessor reported routine equity vesting activity on 11/07/2025. He acquired 5,908 shares of common stock upon settlement of restricted stock units and had 3,282 shares withheld to cover taxes at $52.25 per share. Following these transactions, he directly owned 541,673 shares.
The RSUs convert 1‑for‑1 into common stock and were part of a grant vesting in quarterly installments through August 2026, subject to continued service and plan terms.
FormFactor (FORM) insider filing: CFO and SVP Global Finance Aric McKinnis reported a grant of 13,188 restricted stock units on November 6, 2025. The RSUs vest in twelve quarterly installments from February 6, 2026 through November 6, 2028 and will be settled in common stock on or after each vesting date. The award was recorded at $0 per unit and is held directly. Unvested RSUs are forfeitable upon termination, subject to existing agreements.