Michael P. Plisinski - 01 Mar 2026 Form 4 Insider Report for ONTO INNOVATION INC. (ONTO)

Role
Chief Executive Officer, Director
Signature
By: Eric French For: Michael Plisinski
Issuer symbol
ONTO
Transactions as of
01 Mar 2026
Net transactions value
-$895,296
Form type
4
Filing time
03 Mar 2026, 16:13:41 UTC
Previous filing
18 Feb 2026
Next filing
04 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Plisinski Michael P Chief Executive Officer, Director C/O ONTO INNOVATION INC., 16 JONSPIN ROAD, WILMINGTON By: Eric French For: Michael Plisinski 03 Mar 2026 0001325550

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ONTO Common Stock Options Exercise $0 +4,597 +2.7% $0.000000 172,652 01 Mar 2026 Direct F1
transaction ONTO Common Stock Tax liability $479,708 -2,222 -1.3% $215.89 170,430 01 Mar 2026 Direct F2
transaction ONTO Common Stock Tax liability $415,588 -1,925 -1.1% $215.89 168,505 01 Mar 2026 Direct F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction ONTO Performance Stock Unit Options Exercise $0 -5,971 -100% $0.000000 0 01 Mar 2026 Common Stock 5,971 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This transaction represents the settlement of performance stock units ("PSUs") granted on March 1, 2024 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of March 1, 2026 as a result of the satisfaction of the performance criteria at 77% of the target.
F2 Represents shares withheld by Issuer to satisfy tax withholding obligations in connection with the vesting of restricted stock unit or performance stock unit grants previously received by the Reporting Person.