ONTO

Onto Innovation Inc.

Company with tickers: ONTO

CIK

704532

CUSIP

683344105

Shares Outstanding

49,743,567

13F Activity (30d)

292 filings 288 filers

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Date	Insider	Role	Type	Shares	Price	Value	After
2026-05-20	SEAMS CHRISTOPHER A	Director	Award	761	—	—	38,513
2026-05-20	SCHWARTZ STEPHEN S	Director	Award	761	—	—	3,536
2026-05-20	Kelley Stephen Douglas	Director	Award	761	—	—	6,384
2026-05-20	MILLER DAVID BRIAN	Director	Award	761	—	—	12,692
2026-05-20	Su May	Director	Award	761	—	—	7,984
2026-05-20	Lynch Susan D	Director	Award	761	—	—	3,684
2026-05-15	YALDAEI RAMIL	Chief Operating Officer	Tax	625	$271.77	$169,856	17,593
2026-05-15	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Tax	530	$271.77	$144,038	21,110
2026-05-15	YALDAEI RAMIL	Chief Operating Officer	Tax	218	$271.77	$59,246	18,218
2026-03-03	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Tax	417	$207.50	$86,528	21,640
2026-03-03	YALDAEI RAMIL	Chief Operating Officer	Tax	615	$207.50	$127,613	18,436
2026-03-03	Dolev Ido	EVP, Prod Solutions Grp	Tax	819	$207.50	$169,943	26,536
2026-03-03	Plisinski Michael P	Director, Chief Executive Officer	Tax	3,742	$207.50	$776,465	179,242
2026-03-02	Chen Shirley	SVP Customer Success	Award	1,261	—	—	1,261
2026-03-02	Chen Shirley	SVP Customer Success	Award	1,261	—	—	1,261
2026-03-02	ROBERTS BRIAN K	Chief Financial Officer	Award	1,548	—	—	1,548
2026-03-02	Chen Shirley	SVP Customer Success	Award	2,523	—	—	15,517
2026-03-02	Plisinski Michael P	Director, Chief Executive Officer	Award	7,239	—	—	7,239
2026-03-02	Dolev Ido	EVP, Prod Solutions Grp	Award	1,720	—	—	1,720
2026-03-02	Dolev Ido	EVP, Prod Solutions Grp	Award	3,440	—	—	27,355
2026-03-02	YALDAEI RAMIL	Chief Operating Officer	Award	1,548	—	—	1,548
2026-03-02	YALDAEI RAMIL	Chief Operating Officer	Award	1,548	—	—	1,548
2026-03-02	ROBERTS BRIAN K	Chief Financial Officer	Award	1,548	—	—	1,548
2026-03-02	Dolev Ido	EVP, Prod Solutions Grp	Award	1,720	—	—	1,720
2026-03-02	Plisinski Michael P	Director, Chief Executive Officer	Award	7,239	—	—	7,239
2026-03-02	ROBERTS BRIAN K	Chief Financial Officer	Award	3,096	—	—	24,271
2026-03-02	YALDAEI RAMIL	Chief Operating Officer	Award	7,683	—	—	19,051
2026-03-02	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Award	2,408	—	—	22,057
2026-03-02	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Award	1,204	—	—	1,204
2026-03-02	Plisinski Michael P	Director, Chief Executive Officer	Award	14,479	—	—	182,984
2026-03-02	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Award	1,204	—	—	1,204
2026-03-01	YALDAEI RAMIL	Chief Operating Officer	Tax	276	$215.89	$59,586	11,368
2026-03-01	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Tax	307	$215.89	$66,278	19,916
2026-03-01	Plisinski Michael P	Director, Chief Executive Officer	Convert	5,971	—	—	0
2026-03-01	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Tax	267	$215.89	$57,643	19,649
2026-03-01	Plisinski Michael P	Director, Chief Executive Officer	Tax	1,925	$215.89	$415,588	168,505
2026-03-01	YALDAEI RAMIL	Chief Operating Officer	Convert	844	—	—	0
2026-03-01	YALDAEI RAMIL	Chief Operating Officer	Convert	649	—	—	11,991
2026-03-01	Plisinski Michael P	Director, Chief Executive Officer	Convert	4,597	—	—	172,652
2026-03-01	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Convert	724	—	—	20,223
2026-03-01	Plisinski Michael P	Director, Chief Executive Officer	Tax	2,222	$215.89	$479,708	170,430
2026-03-01	YALDAEI RAMIL	Chief Operating Officer	Tax	347	$215.89	$74,914	11,644
2026-03-01	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Convert	941	—	—	0
2026-02-14	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Convert	3,084	—	—	21,094
2026-02-14	Plisinski Michael P	Director, Chief Executive Officer	Tax	3,632	$217.23	$788,979	168,055
2026-02-14	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Tax	501	$217.23	$108,832	19,499
2026-02-14	Plisinski Michael P	Director, Chief Executive Officer	Convert	18,445	—	—	180,606
2026-02-14	Plisinski Michael P	Director, Chief Executive Officer	Tax	8,919	$217.23	$1,937,474	171,687
2026-02-14	Plisinski Michael P	Director, Chief Executive Officer	Convert	11,824	—	—	0
2026-02-14	OH Yoon Ah	SVP, Gen Counsel & Corp Sec	Convert	1,977	—	—	0

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