Welcome to our dedicated page for FORMFACTOR SEC filings (Ticker: FORM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
FormFactor, Inc. filings document a Nasdaq-listed semiconductor test and measurement company with common stock registered under the symbol FORM. Its Form 8-K reports furnish quarterly operating results and financial-condition updates, while other material-event filings cover restructuring actions tied to manufacturing consolidation, executive and director changes, and a revolving credit agreement for working capital and general corporate purposes.
The company’s proxy materials describe board elections, committee matters, executive compensation, equity awards, pay-versus-performance disclosure and other annual meeting governance subjects. Together, the filings provide formal disclosure on FormFactor’s capital structure, governance practices, operating performance and risk-related corporate actions.
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) has a notice under Rule 144 indicating that Mike (Michael) David Slessor plans to sell common stock through Morgan Stanley Smith Barney LLC. The filing covers up to 6,412 shares of restricted stock and 11,098 performance share units, all dated August 1, 2025.
The notice also lists prior sales by Mike Slessor over the last three months, including 16,002 common shares on August 14, 2026 and 4,735 common shares on July 15, 2026, with corresponding aggregate values reported for each sale.
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. (FORM) received a Rule 144 notice that director Kelley Lynne Steven-Waiss plans to sell restricted common stock. The filing covers a proposed sale of 2,100 shares of common stock, acquired from the issuer on May 16, 2026, to be sold through Morgan Stanley Smith Barney LLC.
The shares are listed on NASDAQ, and the proposed transaction date is September 3, 2026. The filing states an aggregate market value for the covered securities of $201,810.21, providing investors with visibility into a potential insider sale, though the company itself is not a party to the transaction.
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.
Company FORM reports that insider Mike Slessor plans to sell up to 16,002 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate market value of $2,095,492.30, targeted for August 14, 2026 on NASDAQ. The shares derive from performance shares acquired from the issuer on July 19, 2022. The filing also lists prior sales of 4,735 and 11,890 common shares on July 15, 2026 and June 10, 2026, respectively. Outstanding common shares are disclosed as 78,120,725, a baseline figure, not the amount being sold.
EARNEST Partners, LLC filed an amended Schedule 13G/A (Amendment No. 7) reporting its beneficial ownership of common stock of FormFactor, Inc. as of June 30, 2026. The firm reported beneficial ownership of 3,763,214 shares, representing 4.8% of the outstanding common stock, indicating ownership of 5 percent or less of the class.
EARNEST Partners reported sole voting powershared voting powersole dispositive powerno shared dispositive power
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.