ONTO INNOVATION INC. (ONTO) IPO — S-1 Filing, Stock & Insider Activity

ONTO INNOVATION INC. IPO — Status & S-1 Filing

Track every registration update on the InsiderAlpha IPO tracker.

Updated Jul 16, 2026 · Last SEC filing 2026-05-22

ONTO INNOVATION INC. (ONTO) has filed 8 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-22. 5 Form 8-K material event filings were reported by ONTO in the last 90 days. InsiderAlpha tracks every ONTO SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.

About ONTO INNOVATION INC. (ONTO)

SIC classificationMeasuring & Controlling Devices, NEC (SIC 3829)
SEC CIK0000704532

90-Day SEC Filing Activity

Form 4 filings (90d)8
Form 8-K filings (90d)5
Latest Form 4 filing2026-05-22

Recent ONTO Insider Transactions (Form 4)

DateInsiderRoleTransactionSharesPriceValueFiling
Lynch Susan DDirectorA — Grant or award761$0.00—SEC
Kelley Stephen DouglasDirectorA — Grant or award761$0.00—SEC
MILLER DAVID BRIANDirectorA — Grant or award761$0.00—SEC
SCHWARTZ STEPHEN SDirectorA — Grant or award761$0.00—SEC
Su MayDirectorA — Grant or award761$0.00—SEC
SEAMS CHRISTOPHER ADirectorA — Grant or award761$0.00—SEC
OH Yoon AhSVP, Gen Counsel & Corp SecF — Tax withholding / forfeiture530$271.77$144KSEC
YALDAEI RAMILChief Operating OfficerF — Tax withholding / forfeiture218$271.77$59KSEC
YALDAEI RAMILChief Operating OfficerF — Tax withholding / forfeiture625$271.77$170KSEC
OH Yoon AhSVP, Gen Counsel & Corp SecF — Tax withholding / forfeiture417$207.50$87KSEC
Plisinski Michael PChief Executive OfficerF — Tax withholding / forfeiture3.7K$207.50$776KSEC
YALDAEI RAMILChief Operating OfficerF — Tax withholding / forfeiture615$207.50$128KSEC
Dolev IdoEVP, Prod Solutions GrpF — Tax withholding / forfeiture819$207.50$170KSEC
ROBERTS BRIAN KChief Financial OfficerA — Grant or award3.1K$0.00—SEC
YALDAEI RAMILChief Operating OfficerA — Grant or award7.7K$0.00—SEC

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

Most-Active ONTO Insiders — Last 90 Days

InsiderForm 4 filingsTotal transaction value
YALDAEI RAMIL2$229K
Lynch Susan D1—
SEAMS CHRISTOPHER A1—
MILLER DAVID BRIAN1—
SCHWARTZ STEPHEN S1—

Recent ONTO Form 8-K Material Events

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 ONTO 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

ONTO Insider Trading — FAQ

What is the latest insider trade for ONTO?
ONTO INNOVATION INC. (ONTO) had 8 insider filings in the last 90 days, with the most recent on 2026-05-22. InsiderAlpha tracks every Form 4, 10-K, 10-Q, and 8-K filing in real time.
How many insiders are buying ONTO stock?
0 insider purchases of ONTO were filed in the last 90 days.
How many insiders are selling ONTO stock?
0 insider sales of ONTO were filed in the last 90 days.
Where can I see ONTO SEC filings (Form 4, 10-K, 10-Q, 8-K)?
InsiderAlpha aggregates every ONTO SEC filing — Form 4 insider transactions, 10-K and 10-Q quarterly reports, and 8-K material event disclosures — in one timeline.

Related Companies — Recent Insider Activity

Learn More

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