FORMFACTOR INC (FORM) Insider Trading & SEC Filings

Updated Jul 16, 2026 · Last SEC filing 2026-06-17

FORMFACTOR INC (FORM) has filed 19 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-17. 2 Form 8-K material event filings were reported by FORM in the last 90 days. 13 Form 144 notices of proposed sale were filed for FORM stock. InsiderAlpha tracks every FORM SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About FORMFACTOR INC (FORM)

SEC CIK0001039399

90-Day SEC Filing Activity

Form 4 filings (90d)19
Form 8-K filings (90d)2
Form 144 notices (90d)13
Latest Form 4 filing2026-06-17

Recent FORM Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
St Dennis ThomasDirectorG — Bona-fide gift740$0.00—SEC
St Dennis ThomasDirectorS — Open-market sale2.8K$151.49$424KSEC
SLESSOR MIKECEOS — Open-market sale4.2K$121.72$514KSEC
SLESSOR MIKECEOS — Open-market sale2.5K$122.63$307KSEC
SLESSOR MIKECEOS — Open-market sale1.4K$117.70$165KSEC
SLESSOR MIKECEOS — Open-market sale400$119.46$48KSEC
SLESSOR MIKECEOS — Open-market sale1.6K$123.37$201KSEC
SLESSOR MIKECEOS — Open-market sale767$119.00$91KSEC
SLESSOR MIKECEOS — Open-market sale975$121.00$118KSEC
Rhodes SheriDirectorS — Open-market sale6.3K$125.40$794KSEC
McKinnis Aric BrendanCFO, SVP Global FinanceM — Option exercise773$0.00—SEC
McKinnis Aric BrendanCFO, SVP Global FinanceF — Tax withholding / forfeiture193$125.11$24KSEC
Obregon-Jimenez RebecaDirectorS — Open-market sale3.8K$126.47$484KSEC
WHITE BRIAN CDirectorS — Open-market sale3.2K$126.00$410KSEC
St Dennis ThomasDirectorS — Open-market sale1.0K$115.84$116KSEC

All transactions sourced from SEC EDGAR Form 4 filings for FORMFACTOR INC (FORM). Updated in real time as new filings are submitted to the SEC.

Most-Active FORM Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
SLESSOR MIKE28$3.91M
McKinnis Aric Brendan9$84K
St Dennis Thomas4$540K
STEVEN-WAISS KELLEY2$678K
Obregon-Jimenez Rebeca2$484K

Recent FORM Form 8-K Material Events

Recent FORM Form 144 Notices of Proposed Sale

Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.

Recent Insider Filings

Form 4 Transaction Code Reference

SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in FORM insider filings:

POpen-market purchase by the insider
SOpen-market sale by the insider
AGrant, award, or other acquisition from the issuer
MExercise or conversion of derivative security (e.g. options)
FPayment of exercise price or tax liability via share withholding
GBona-fide gift of securities
DDisposition to the issuer (e.g. share buyback participation)
JOther acquisition or disposition
XExercise of in-the-money or at-the-money derivative security
CConversion of derivative security
VTransaction voluntarily reported earlier than required

FORM Insider Trading — FAQ

What is the latest insider trade for FORM?
FORMFACTOR INC (FORM) had 19 insider filings in the last 90 days, with the most recent on 2026-06-17. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying FORM stock?
0 insider purchases of FORM were filed in the last 90 days.
How many insiders are selling FORM stock?
0 insider sales of FORM were filed in the last 90 days.
Where can I see FORM SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every FORM SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Learn More

Open the live FORM dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.