Onto Innovation Inc. ONTO NYSE

NYSE • Technology • Semiconductors • US • USD

SharesGrow Score

72/100

4/7 Pass

SharesGrow Intrinsic Value

Onto Innovation Inc. (ONTO) has 20 known insider and institutional holders on record. The largest holder is Stultz Timothy J with 209,143 shares. Other notable holders include Lesaicherre Pierre-Yves and BENTLEY J THOMAS.

Over the last 12 months, insiders have made 34 transactions in ONTO stock — 15 buys (valued at RSU Award) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.

ONTO Insider Ownership

Top Holder

Stultz Timothy J

209,143 shares

Buys (12 mo)

$0.00 value

Sells (12 mo)

$0.00 value

12-Month Transaction Activity

Buy 44%

Sell 0%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Stultz Timothy J	Director	209,143	2020-02-13	100%
2	Lesaicherre Pierre-yves	President and CEO	110,256	2019-07-02	53%
3	Bentley J Thomas	Director	84,478	2018-05-24	40%
4	Andreson Jeff	Chief Financial Officer	71,919	2017-09-26	34%
5	Kocher Rollin	Officer	48,517	2021-03-15	23%
6	Brown Edward J Jr	Director	44,739	2021-05-12	21%
7	Tsingos Christine A	Director	42,918	2024-05-23	21%
8	Seams Christopher A	Director	37,752	2025-05-23	18%
9	Borowicz Stanislaw M.	EVP, Business Operations	36,934	2018-01-03	18%
10	Smedt Rodney	Officer	32,538	2021-06-02	16%
11	Taylor Janet Therese	General Counsel	30,110	2019-10-29	14%
12	Barnhart James	SVP, Business Operations	27,046	2019-10-29	13%
13	Vedula Srini	Officer	26,887	2019-11-04	13%
14	Da Silveira Elvino M	Officer	23,218	2019-10-29	11%
15	Whitten John R	Director	20,618	2020-02-21	10%
16	Heidrich Kevin	Officer	20,470	2021-06-15	10%
17	Berlinghieri Leo	Director	20,210	2024-05-23	10%
18	Deuster Robert G	Director	17,276	2020-05-14	8%
19	Chan Chun Hoy	Officer	15,072	2019-10-30	7%
20	Slicer Mark	Chief Financial Officer	13,640	2025-05-19	7%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-03-02	Chen Shirley	SVP Customer Success	RSU Award	1,261	-	-
2026-03-03	Dolev Ido	EVP, Prod Solutions Grp	Tax Withholding of RSU	819	$207.50	$169.94K
2026-03-02	Dolev Ido	EVP, Prod Solutions Grp	RSU Award	1,720	-	-
2026-03-03	Yaldaei Ramil	Chief Operating Officer	Tax Withholding of RSU	615	$207.50	$127.61K
2026-03-02	Yaldaei Ramil	Chief Operating Officer	RSU Award	1,548	-	-
2026-03-03	Oh Yoon Ah	SVP, Gen Counsel & Corp Sec	Tax Withholding of RSU	417	$207.50	$86.53K
2026-03-02	Oh Yoon Ah	SVP, Gen Counsel & Corp Sec	RSU Award	1,204	-	-
2026-03-03	Plisinski Michael P	Chief Executive Officer	Tax Withholding of RSU	3,742	$207.50	$776.47K
2026-03-02	Plisinski Michael P	Chief Executive Officer	RSU Award	7,239	-	-
2026-03-02	Roberts Brian K	Chief Financial Officer	RSU Award	1,548	-	-
2026-03-01	Oh Yoon Ah	SVP, Gen Counsel & Corp Sec	Option Exercise (Sell)	941	-	-
2026-03-01	Plisinski Michael P	Chief Executive Officer	Option Exercise (Sell)	5,971	-	-
2026-02-14	Oh Yoon Ah	SVP, Gen Counsel & Corp Sec	Option Exercise (Sell)	1,977	-	-
2026-02-14	Plisinski Michael P	Chief Executive Officer	Option Exercise (Sell)	11,824	-	-
2025-12-24	Plisinski Michael P	Chief Executive Officer	Gift (Given)	25,000	-	-
2025-12-02	Dolev Ido	EVP, Prod Solutions Grp	Tax Withholding of RSU	3,183	$154.01	$490.21K
2025-10-03	Yaldaei Ramil	Chief Operating Officer	Tax Withholding of RSU	594	$143.71	$85.36K
2025-09-02	Chen Shirley	SVP, Customer Success	RSU Award	12,994	-	-
2025-09-02	Roberts Brian K	Chief Financial Officer	RSU Award	21,175	-	-
2025-06-16	Chen Shirley	Officer	Unknown	-	-	-
2025-06-16	Roberts Brian K	Officer	Unknown	-	-	-
2025-06-12	Slicer Mark	Officer	Unknown	-	-	-
2025-06-02	Dolev Ido	EVP, Prod Solutions Grp	RSU Award	2,695	-	-
2025-05-21	Su May	Director	RSU Award	2,114	-	-
2025-05-21	Lynch Susan D	Director	RSU Award	2,114	-	-