ONTO

Onto Innovation INC.

Insider trading activity for Onto Innovation INC., straight from SEC Form 4 filings. Net figures below count open-market buys and sales only — grants, option exercises and tax withholding are excluded because they are compensation, not decisions to trade.

Past 3 months

-$302.3K

net selling

Bought(0 · 0 insiders): $0
Sold(1 · 1 insiders): $302.3K

Past 6 months

-$302.3K

net selling

Bought(0 · 0 insiders): $0
Sold(1 · 1 insiders): $302.3K

Past 12 months

-$302.3K

net selling

Bought(0 · 0 insiders): $0
Sold(1 · 1 insiders): $302.3K

Transaction history

The 73 most recent Form 4 transactions.

Open in screener →

Insider transactions, newest first: date, security, transaction type, size and a link to the filing each row came from.
Date	Insider	Role	Type	Shares	Price	Value	Δ Own	Filing
Sep 2	Chen Shirley	Senior Vice President…	FTAX	1,516	$254.55	$385.9K	-9.8%	Open the original filing on SEC.gov
Sep 2	Roberts Brian K	Chief Financial Officer	FTAX↺	3,239	$254.55	$824.5K	-13.4%	Open the original filing on SEC.gov
Aug 21	Lynch Susan D	Director	SSELL◷	1,000	$302.30	$302.3K	-27.1%	Open the original filing on SEC.gov
May 20	Su May	Director	AGRANT	761	—	—	+10.5%	Open the original filing on SEC.gov
May 20	Schwartz Stephen S	Director	AGRANT	761	—	—	+27.4%	Open the original filing on SEC.gov
May 20	Seams Christopher A	Director	AGRANT	761	—	—	+2.0%	Open the original filing on SEC.gov
May 20	Miller David Brian	Director	AGRANT	761	—	—	+6.4%	Open the original filing on SEC.gov
May 20	Lynch Susan D	Director	AGRANT	761	—	—	+26.0%	Open the original filing on SEC.gov
May 20	Kelley Stephen Douglas	Director	AGRANT	761	—	—	+13.5%	Open the original filing on SEC.gov
May 15	Yaldaei Ramil	Chief Operating Officer	FTAX	625	$271.77	$169.9K	-3.4%	Open the original filing on SEC.gov
May 15	Yaldaei Ramil	Chief Operating Officer	FTAX	218	$271.77	$59.2K	-1.2%	Open the original filing on SEC.gov
May 15	OH Yoon Ah	SVP, Gen Counsel & Corp…	FTAX	530	$271.77	$144K	-2.5%	Open the original filing on SEC.gov
Mar 3	Yaldaei Ramil	Chief Operating Officer	FTAX	615	$207.50	$127.6K	-3.2%	Open the original filing on SEC.gov
Mar 3	Plisinski Michael P	Chief Executive Officer	FTAX	3,742	$207.50	$776.5K	-2.0%	Open the original filing on SEC.gov
Mar 3	OH Yoon Ah	SVP, Gen Counsel & Corp…	FTAX	417	$207.50	$86.5K	-1.9%	Open the original filing on SEC.gov
Mar 3	Dolev Ido	EVP, Prod Solutions Grp	FTAX	819	$207.50	$169.9K	-3.0%	Open the original filing on SEC.gov
Mar 2	Yaldaei Ramil	Chief Operating Officer	AGRANT◆	1,548	—	—	—	Open the original filing on SEC.gov
Mar 2	Yaldaei Ramil	Chief Operating Officer	AGRANT◆	1,548	—	—	—	Open the original filing on SEC.gov
Mar 2	Yaldaei Ramil	Chief Operating Officer	AGRANT	7,683	—	—	+67.6%	Open the original filing on SEC.gov
Mar 2	Plisinski Michael P	Chief Executive Officer	AGRANT◆	7,239	—	—	—	Open the original filing on SEC.gov
Mar 2	Plisinski Michael P	Chief Executive Officer	AGRANT◆	7,239	—	—	—	Open the original filing on SEC.gov
Mar 2	Plisinski Michael P	Chief Executive Officer	AGRANT	14,479	—	—	+8.6%	Open the original filing on SEC.gov
Mar 2	Roberts Brian K	Chief Financial Officer	AGRANT◆	1,548	—	—	—	Open the original filing on SEC.gov
Mar 2	Roberts Brian K	Chief Financial Officer	AGRANT◆	1,548	—	—	—	Open the original filing on SEC.gov
Mar 2	Roberts Brian K	Chief Financial Officer	AGRANT	3,096	—	—	+14.6%	Open the original filing on SEC.gov
Mar 2	OH Yoon Ah	SVP, Gen Counsel & Corp…	AGRANT◆	1,204	—	—	—	Open the original filing on SEC.gov
Mar 2	OH Yoon Ah	SVP, Gen Counsel & Corp…	AGRANT◆	1,204	—	—	—	Open the original filing on SEC.gov
Mar 2	OH Yoon Ah	SVP, Gen Counsel & Corp…	AGRANT	2,408	—	—	+12.3%	Open the original filing on SEC.gov
Mar 2	Dolev Ido	EVP, Prod Solutions Grp	AGRANT◆	1,720	—	—	—	Open the original filing on SEC.gov
Mar 2	Dolev Ido	EVP, Prod Solutions Grp	AGRANT◆	1,720	—	—	—	Open the original filing on SEC.gov
Mar 2	Dolev Ido	EVP, Prod Solutions Grp	AGRANT	3,440	—	—	+14.4%	Open the original filing on SEC.gov
Mar 2	Chen Shirley	SVP Customer Success	AGRANT◆	1,261	—	—	—	Open the original filing on SEC.gov
Mar 2	Chen Shirley	SVP Customer Success	AGRANT◆	1,261	—	—	—	Open the original filing on SEC.gov
Mar 2	Chen Shirley	SVP Customer Success	AGRANT	2,523	—	—	+19.4%	Open the original filing on SEC.gov
Mar 1	Yaldaei Ramil	Chief Operating Officer	MEXER◆	844	—	—	—	Open the original filing on SEC.gov
Mar 1	Yaldaei Ramil	Chief Operating Officer	FTAX	276	$215.89	$59.6K	-2.4%	Open the original filing on SEC.gov
Mar 1	Yaldaei Ramil	Chief Operating Officer	FTAX	347	$215.89	$74.9K	-2.9%	Open the original filing on SEC.gov
Mar 1	Yaldaei Ramil	Chief Operating Officer	MEXER	649	—	—	+5.7%	Open the original filing on SEC.gov
Mar 1	Plisinski Michael P	Chief Executive Officer	MEXER◆	5,971	—	—	—	Open the original filing on SEC.gov
Mar 1	Plisinski Michael P	Chief Executive Officer	FTAX	1,925	$215.89	$415.6K	-1.1%	Open the original filing on SEC.gov
Mar 1	Plisinski Michael P	Chief Executive Officer	FTAX	2,222	$215.89	$479.7K	-1.3%	Open the original filing on SEC.gov
Mar 1	Plisinski Michael P	Chief Executive Officer	MEXER	4,597	—	—	+2.7%	Open the original filing on SEC.gov
Mar 1	OH Yoon Ah	SVP, Gen Counsel & Corp…	MEXER◆	941	—	—	—	Open the original filing on SEC.gov
Mar 1	OH Yoon Ah	SVP, Gen Counsel & Corp…	FTAX	267	$215.89	$57.6K	-1.3%	Open the original filing on SEC.gov
Mar 1	OH Yoon Ah	SVP, Gen Counsel & Corp…	FTAX	307	$215.89	$66.3K	-1.5%	Open the original filing on SEC.gov
Mar 1	OH Yoon Ah	SVP, Gen Counsel & Corp…	MEXER	724	—	—	+3.7%	Open the original filing on SEC.gov
Feb 14	Plisinski Michael P	Chief Executive Officer	MEXER◆	11,824	—	—	—	Open the original filing on SEC.gov
Feb 14	Plisinski Michael P	Chief Executive Officer	FTAX	3,632	$217.23	$789K	-2.1%	Open the original filing on SEC.gov
Feb 14	Plisinski Michael P	Chief Executive Officer	FTAX	8,919	$217.23	$1.9M	-4.9%	Open the original filing on SEC.gov
Feb 14	Plisinski Michael P	Chief Executive Officer	MEXER	18,445	—	—	+11.4%	Open the original filing on SEC.gov
Feb 14	OH Yoon Ah	SVP, Gen Counsel & Corp…	MEXER◆	1,977	—	—	—	Open the original filing on SEC.gov
Feb 14	OH Yoon Ah	SVP, Gen Counsel & Corp…	FTAX	501	$217.23	$108.8K	-2.5%	Open the original filing on SEC.gov
Feb 14	OH Yoon Ah	SVP, Gen Counsel & Corp…	FTAX	1,094	$217.23	$237.6K	-5.2%	Open the original filing on SEC.gov
Feb 14	OH Yoon Ah	SVP, Gen Counsel & Corp…	MEXER	3,084	—	—	+17.1%	Open the original filing on SEC.gov
Dec 24, 2025	Plisinski Michael P	Chief Executive Officer	GGIFT	25,000	—	—	-13.4%	Open the original filing on SEC.gov
Dec 2, 2025	Dolev Ido	EVP, Prod Solutions Grp	FTAX	3,183	$154.01	$490.2K	-11.8%	Open the original filing on SEC.gov
Oct 3, 2025	Yaldaei Ramil	Chief Operating Officer	FTAX	594	$143.71	$85.4K	-5.0%	Open the original filing on SEC.gov
Sep 2, 2025	Roberts Brian K	Chief Financial Officer	AGRANT	21,175	—	—	—	Open the original filing on SEC.gov
Sep 2, 2025	Chen Shirley	SVP, Customer Success	AGRANT	12,994	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Dolev Ido	EVP, Prod Solutions Grp	AGRANT◆	2,695	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Dolev Ido	EVP, Prod Solutions Grp	AGRANT◆	2,695	—	—	—	Open the original filing on SEC.gov
Jun 2, 2025	Dolev Ido	EVP, Prod Solutions Grp	AGRANT	5,391	—	—	+25.0%	Open the original filing on SEC.gov
Jun 2, 2025	Dolev Ido	EVP, Prod Solutions Grp	AGRANT	21,562	—	—	—	Open the original filing on SEC.gov
May 21, 2025	Su May	Director	AGRANT	2,114	—	—	+41.4%	Open the original filing on SEC.gov
May 21, 2025	Seams Christopher A	Director	AGRANT	2,114	—	—	+5.9%	Open the original filing on SEC.gov
May 21, 2025	Schwartz Stephen S	Director	AGRANT	2,114	—	—	+319.8%	Open the original filing on SEC.gov
May 21, 2025	Miller David Brian	Director	AGRANT	2,114	—	—	+21.5%	Open the original filing on SEC.gov
May 21, 2025	Lynch Susan D	Director	AGRANT	2,114	—	—	+261.3%	Open the original filing on SEC.gov
May 21, 2025	Kelley Stephen Douglas	Director	AGRANT	2,114	—	—	+60.3%	Open the original filing on SEC.gov
May 17, 2025	Slicer Mark	Chief Financial Officer	FTAX	2,066	$99.40	$205.4K	-13.2%	Open the original filing on SEC.gov
May 15, 2025	Yaldaei Ramil	Chief Operating Officer	FTAX	609	$98.04	$59.7K	-4.9%	Open the original filing on SEC.gov
May 15, 2025	Yaldaei Ramil	Chief Operating Officer	FTAX	217	$98.04	$21.3K	-1.7%	Open the original filing on SEC.gov
May 15, 2025	OH Yoon Ah	SVP, Gen Counsel & Corp…	FTAX	603	$98.04	$59.1K	-3.2%	Open the original filing on SEC.gov

FTAX$385.9K

Chen Shirley · Senior Vice…Sep 2

1,516 sh @ $254.55 · -9.8% own

FTAX↺$824.5K

Roberts Brian K · Chief Financial…Sep 2

3,239 sh @ $254.55 · -13.4% own

SSELL◷$302.3K

Lynch Susan D · DirectorAug 21

1,000 sh @ $302.30 · -27.1% own

AGRANT—

Su May · DirectorMay 20

761 sh · +10.5% own

AGRANT—

Schwartz Stephen S · DirectorMay 20

761 sh · +27.4% own

AGRANT—

Seams Christopher A · DirectorMay 20

761 sh · +2.0% own

AGRANT—

Miller David Brian · DirectorMay 20

761 sh · +6.4% own

AGRANT—

Lynch Susan D · DirectorMay 20

761 sh · +26.0% own

AGRANT—

Kelley Stephen Douglas · DirectorMay 20

761 sh · +13.5% own

FTAX$169.9K

Yaldaei Ramil · Chief Operating…May 15

625 sh @ $271.77 · -3.4% own

FTAX$59.2K

Yaldaei Ramil · Chief Operating…May 15

218 sh @ $271.77 · -1.2% own

FTAX$144K

OH Yoon Ah · SVP, Gen Counsel…May 15

530 sh @ $271.77 · -2.5% own

FTAX$127.6K

Yaldaei Ramil · Chief Operating…Mar 3

615 sh @ $207.50 · -3.2% own

FTAX$776.5K

Plisinski Michael P · Chief Executive…Mar 3

3,742 sh @ $207.50 · -2.0% own

FTAX$86.5K

OH Yoon Ah · SVP, Gen Counsel…Mar 3

417 sh @ $207.50 · -1.9% own

FTAX$169.9K

Dolev Ido · EVP, Prod Solution…Mar 3

819 sh @ $207.50 · -3.0% own

AGRANT◆—

Yaldaei Ramil · Chief Operating…Mar 2

1,548 sh

AGRANT◆—

Yaldaei Ramil · Chief Operating…Mar 2

1,548 sh

AGRANT—

Yaldaei Ramil · Chief Operating…Mar 2

7,683 sh · +67.6% own

AGRANT◆—

Plisinski Michael P · Chief Executive…Mar 2

7,239 sh

AGRANT◆—

Plisinski Michael P · Chief Executive…Mar 2

7,239 sh

AGRANT—

Plisinski Michael P · Chief Executive…Mar 2

14,479 sh · +8.6% own

AGRANT◆—

Roberts Brian K · Chief Financial…Mar 2

1,548 sh

AGRANT◆—

Roberts Brian K · Chief Financial…Mar 2

1,548 sh

AGRANT—

Roberts Brian K · Chief Financial…Mar 2

3,096 sh · +14.6% own

AGRANT◆—

OH Yoon Ah · SVP, Gen Counsel…Mar 2

1,204 sh

AGRANT◆—

OH Yoon Ah · SVP, Gen Counsel…Mar 2

1,204 sh

AGRANT—

OH Yoon Ah · SVP, Gen Counsel…Mar 2

2,408 sh · +12.3% own

AGRANT◆—

Dolev Ido · EVP, Prod Solution…Mar 2

1,720 sh

AGRANT◆—

Dolev Ido · EVP, Prod Solution…Mar 2

1,720 sh

AGRANT—

Dolev Ido · EVP, Prod Solution…Mar 2

3,440 sh · +14.4% own

AGRANT◆—

Chen Shirley · SVP Customer…Mar 2

1,261 sh

AGRANT◆—

Chen Shirley · SVP Customer…Mar 2

1,261 sh

AGRANT—

Chen Shirley · SVP Customer…Mar 2

2,523 sh · +19.4% own

MEXER◆—

Yaldaei Ramil · Chief Operating…Mar 1

844 sh

FTAX$59.6K

Yaldaei Ramil · Chief Operating…Mar 1

276 sh @ $215.89 · -2.4% own

FTAX$74.9K

Yaldaei Ramil · Chief Operating…Mar 1

347 sh @ $215.89 · -2.9% own

MEXER—

Yaldaei Ramil · Chief Operating…Mar 1

649 sh · +5.7% own

MEXER◆—

Plisinski Michael P · Chief Executive…Mar 1

5,971 sh

FTAX$415.6K

Plisinski Michael P · Chief Executive…Mar 1

1,925 sh @ $215.89 · -1.1% own

FTAX$479.7K

Plisinski Michael P · Chief Executive…Mar 1

2,222 sh @ $215.89 · -1.3% own

MEXER—

Plisinski Michael P · Chief Executive…Mar 1

4,597 sh · +2.7% own

MEXER◆—

OH Yoon Ah · SVP, Gen Counsel…Mar 1

941 sh

FTAX$57.6K

OH Yoon Ah · SVP, Gen Counsel…Mar 1

267 sh @ $215.89 · -1.3% own

FTAX$66.3K

OH Yoon Ah · SVP, Gen Counsel…Mar 1

307 sh @ $215.89 · -1.5% own

MEXER—

OH Yoon Ah · SVP, Gen Counsel…Mar 1

724 sh · +3.7% own

MEXER◆—

Plisinski Michael P · Chief Executive…Feb 14

11,824 sh

FTAX$789K

Plisinski Michael P · Chief Executive…Feb 14

3,632 sh @ $217.23 · -2.1% own

FTAX$1.9M

Plisinski Michael P · Chief Executive…Feb 14

8,919 sh @ $217.23 · -4.9% own

MEXER—

Plisinski Michael P · Chief Executive…Feb 14

18,445 sh · +11.4% own

MEXER◆—

OH Yoon Ah · SVP, Gen Counsel…Feb 14

1,977 sh

FTAX$108.8K

OH Yoon Ah · SVP, Gen Counsel…Feb 14

501 sh @ $217.23 · -2.5% own

FTAX$237.6K

OH Yoon Ah · SVP, Gen Counsel…Feb 14

1,094 sh @ $217.23 · -5.2% own

MEXER—

OH Yoon Ah · SVP, Gen Counsel…Feb 14

3,084 sh · +17.1% own

GGIFT—

Plisinski Michael P · Chief Executive…Dec 24, 2025

25,000 sh · -13.4% own

FTAX$490.2K

Dolev Ido · EVP, Prod Solution…Dec 2, 2025

3,183 sh @ $154.01 · -11.8% own

FTAX$85.4K

Yaldaei Ramil · Chief Operating…Oct 3, 2025

594 sh @ $143.71 · -5.0% own

AGRANT—

Roberts Brian K · Chief Financial…Sep 2, 2025

21,175 sh

AGRANT—

Chen Shirley · SVP, Customer…Sep 2, 2025

12,994 sh

AGRANT◆—

Dolev Ido · EVP, Prod Solution…Jun 2, 2025

2,695 sh

AGRANT◆—

Dolev Ido · EVP, Prod Solution…Jun 2, 2025

2,695 sh

AGRANT—

Dolev Ido · EVP, Prod Solution…Jun 2, 2025

5,391 sh · +25.0% own

AGRANT—

Dolev Ido · EVP, Prod Solution…Jun 2, 2025

21,562 sh

AGRANT—

Su May · DirectorMay 21, 2025

2,114 sh · +41.4% own

AGRANT—

Seams Christopher A · DirectorMay 21, 2025

2,114 sh · +5.9% own

AGRANT—

Schwartz Stephen S · DirectorMay 21, 2025

2,114 sh · +319.8% own

AGRANT—

Miller David Brian · DirectorMay 21, 2025

2,114 sh · +21.5% own

AGRANT—

Lynch Susan D · DirectorMay 21, 2025

2,114 sh · +261.3% own

AGRANT—

Kelley Stephen Douglas · DirectorMay 21, 2025

2,114 sh · +60.3% own

FTAX$205.4K

Slicer Mark · Chief Financial…May 17, 2025

2,066 sh @ $99.40 · -13.2% own

FTAX$59.7K

Yaldaei Ramil · Chief Operating…May 15, 2025

609 sh @ $98.04 · -4.9% own

FTAX$21.3K

Yaldaei Ramil · Chief Operating…May 15, 2025

217 sh @ $98.04 · -1.7% own

FTAX$59.1K

OH Yoon Ah · SVP, Gen Counsel…May 15, 2025

603 sh @ $98.04 · -3.2% own

Filing record

How quickly insiders here report their trades. Section 16 allows two business days from the transaction.

All 36 filings we hold were filed within the two-business-day deadline.

Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings

Insiders at this company

Everyone who has filed a Form 4 for this issuer.

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