FORMFACTOR INC

FORMReported to SECin USCIK 0001039399Filings at SEC EDGAR

No score on this page, by design. Everything here is a fact from a public U.S. register: insider filings at the SEC (Form 4), lobbying filings under the Lobbying Disclosure Act, trades reported by members of Congress under the STOCK Act, and fund holdings in 13F filings. Our scores, percentiles and signals run on the Dutch register only, because that is the only register the model has been validated on.

This page is free to read, and it stops after 5 rows. Those are the 5 most recent Form 4 lines at this company, out of 37. Reading the whole list, and the full version of each filer's page, is part of the subscription. What that costs is on the pricing page. Already subscribed? Sign in and this page opens in full.

The most recent filings

Most recent filing first: every line of every Form 4 at this company that passed our review, the same lines as on the register. Reported is the day the filing reached the SEC, usually within two business days of the trade. Amounts are in U.S. dollars, as the form states them.

5 of 37
Form 4 lines at FORMFACTOR INC, most recent filing first
Filed byTypeValueReportedFiled byValueTypeSharesReported
SLESSOR MIKECEOOpen-market sell$105,8001,000 sharesSep 17, 2026SLESSOR MIKECEO$105,800Sell · Sep 17Open-market sell1,000Sep 17, 2026
SLESSOR MIKECEOOpen-market sell$817,0987,773 sharesSep 17, 2026SLESSOR MIKECEO$817,098Sell · Sep 17Open-market sell7,773Sep 17, 2026
SLESSOR MIKECEOOpen-market sell$910,9208,737 sharesSep 17, 2026SLESSOR MIKECEO$910,920Sell · Sep 17Open-market sell8,737Sep 17, 2026
STEVEN-WAISS KELLEY—Open-market sell$201,8102,100 sharesSep 4, 2026STEVEN-WAISS KELLEY$201,810Sell · Sep 4Open-market sell2,100Sep 4, 2026
SLESSOR MIKECEOOpen-market sell$91,464686 sharesAug 17, 2026SLESSOR MIKECEO$91,464Sell · Aug 17Open-market sell686Aug 17, 2026