Form4insider filings, from the source

Insider holders · CIK 0001039399

FORMFACTOR INC · FORM

Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity

InsiderDirect sharesIndirect sharesTotal reportedLast report (ET)From
Mike SlessorCEO466,694—466,694Sep 17, 2026 · 7:30 pm EDTForm 4
Michael M LudwigSR VP, CFO240,387—240,387Feb 22, 2018 · 6:51 pm ESTForm 4
Stuart L MerkadeauSR VP GENERAL COUNSEL78,629—78,629May 8, 2015 · 7:48 pm EDTForm 4
Lothar MaierDirector66,00012,00078,000May 30, 2018 · 7:49 pm EDTForm 4
Edward Rogas Jr.Director68,000—68,000May 30, 2018 · 7:43 pm EDTForm 4
Michael W ZellnerDirector41,875—41,875Sep 11, 2018 · 12:38 pm EDTForm 4
Raymond A LinkDirector40,602—40,602May 30, 2018 · 7:41 pm EDTForm 4
Thomas St DennisDirector28,333—28,333Jun 16, 2026 · 8:31 pm EDTForm 4
Kelley Steven-WaissDirector24,426—24,426Sep 4, 2026 · 4:51 pm EDTForm 4
Aric Brendan McKinnisCFO, SVP Global Finance14,152—14,152Aug 7, 2026 · 5:49 pm EDTForm 4
Richard DeLateurDirector13,000—13,000Aug 16, 2018 · 1:42 pm EDTForm 4
Sheri RhodesDirector5,375—5,375Jun 4, 2026 · 6:20 pm EDTForm 4

Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.