ONTO

SEC source: 0002022859-25-000023 · edgardoc.xml · nonDerivative · entry 3

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,874

F2 · shares: 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.

SEC source: 0002022859-25-000023 · edgardoc.xml · nonDerivative · entry 2

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,686

F2 · shares: 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.

SEC source: 0002022859-25-000023 · edgardoc.xml · nonDerivative · entry 1

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 181,121

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: This transaction represents the settlement of performance stock units ("PSUs") granted on February 14, 2023 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 14, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000022 · edgardoc.xml · derivative · entry 4

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,282 shares

Expires 2025-02-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: This transaction represents the settlement of performance stock units ("PSUs") granted on February 14, 2023 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 14, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000022 · edgardoc.xml · nonDerivative · entry 3

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,101

F2 · shares: 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.

SEC source: 0002022859-25-000022 · edgardoc.xml · nonDerivative · entry 2

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,721

F2 · shares: 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.

SEC source: 0002022859-25-000022 · edgardoc.xml · nonDerivative · entry 1

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,497

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: This transaction represents the settlement of performance stock units ("PSUs") granted on February 14, 2023 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 14, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000021 · edgardoc.xml · derivative · entry 4

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,369 shares

Expires 2025-02-14

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: This transaction represents the settlement of performance stock units ("PSUs") granted on February 14, 2023 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 14, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000021 · edgardoc.xml · nonDerivative · entry 3

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,355

F2 · shares: 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.

SEC source: 0002022859-25-000021 · edgardoc.xml · nonDerivative · entry 2

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,819

F2 · shares: 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.

SEC source: 0002022859-25-000021 · edgardoc.xml · nonDerivative · entry 1

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,210

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: This transaction represents the settlement of performance stock units ("PSUs") granted on February 14, 2023 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 14, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000016 · edgardoc.xml · nonDerivative · entry 1

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,472

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2024.

SEC source: 0002022859-25-000014 · edgardoc.xml · derivative · entry 4

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 816 shares

Expires 2025-02-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: This transaction represents the settlement of performance stock units ("PSUs") granted on February 10, 2022 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 10, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000014 · edgardoc.xml · nonDerivative · entry 3

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,710

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: This transaction represents the settlement of performance stock units ("PSUs") granted on February 10, 2022 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 10, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000014 · edgardoc.xml · nonDerivative · entry 2

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,078

F1 · shares: 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.

SEC source: 0002022859-25-000014 · edgardoc.xml · nonDerivative · entry 1

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,917

F1 · shares: 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.

SEC source: 0002022859-25-000013 · edgardoc.xml · derivative · entry 4

OH Yoon Ah · CIK 0001889970 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,360 shares

Expires 2025-02-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: This transaction represents the settlement of performance stock units ("PSUs") granted on February 10, 2022 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 10, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000013 · edgardoc.xml · nonDerivative · entry 3

OH Yoon Ah · CIK 0001889970 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,343

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: This transaction represents the settlement of performance stock units ("PSUs") granted on February 10, 2022 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 10, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000013 · edgardoc.xml · nonDerivative · entry 2

OH Yoon Ah · CIK 0001889970 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,623

F1 · shares: 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.

SEC source: 0002022859-25-000013 · edgardoc.xml · nonDerivative · entry 1

OH Yoon Ah · CIK 0001889970 · VP, General Counsel & Corp Sec

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,639

F1 · shares: 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.

SEC source: 0002022859-25-000012 · edgardoc.xml · derivative · entry 4

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 9,524 shares

Expires 2025-02-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: This transaction represents the settlement of performance stock units ("PSUs") granted on February 10, 2022 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 10, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000012 · edgardoc.xml · nonDerivative · entry 3

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,471

F1 · shares: 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.

SEC source: 0002022859-25-000012 · edgardoc.xml · nonDerivative · entry 2

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 166,681

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: This transaction represents the settlement of performance stock units ("PSUs") granted on February 10, 2022 in shares of common stock of Onto Innovation Inc. on their scheduled vesting date of February 10, 2025 as a result of the satisfaction of the performance criteria at 200% of the target.

SEC source: 0002022859-25-000012 · edgardoc.xml · nonDerivative · entry 1

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,633

F1 · shares: 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.

SEC source: 0002022859-25-000008 · edgardoc.xml · nonDerivative · entry 1

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 150,492

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 26, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $219 to $219.52, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote to this Form 4.

SEC source: 0002022859-25-000006 · edgardoc.xml · nonDerivative · entry 2

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 185,492

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 26, 2024.

SEC source: 0002022859-25-000006 · edgardoc.xml · nonDerivative · entry 1

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 185,592

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 26, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $211 to $211.84, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote to this Form 4.

SEC source: 0002022859-25-000004 · edgardoc.xml · nonDerivative · entry 1

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,223

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 11, 2024.

SEC source: 0002022859-25-000003 · edgardoc.xml · nonDerivative · entry 2

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 215,492

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 26, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $201.19 to $201.54, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote to this Form 4.

SEC source: 0002022859-25-000003 · edgardoc.xml · nonDerivative · entry 1

Plisinski Michael P · CIK 0001325550 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 217,224

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 26, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $200 to $201, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote to this Form 4.

SEC source: 0002022859-24-000040 · edgardoc.xml · nonDerivative · entry 1

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,933

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 16, 2024.

SEC source: 0002022859-24-000038 · edgardoc.xml · nonDerivative · entry 1

OH Yoon Ah · CIK 0001889970 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,014

F1 · shares: 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.

SEC source: 0002022859-24-000036 · edgardoc.xml · nonDerivative · entry 1

YALDAEI RAMIL · CIK 0001976282 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,148

F1 · shares: 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.

F2 · balance_after: Includes 164 shares purchased on June 30, 2024 pursuant to the Issuer's Employee Stock Purchase Plan.

SEC source: 0002022859-24-000033 · edgardoc.xml · nonDerivative · entry 2

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,050

F3 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2024.

SEC source: 0002022859-24-000034 · edgardoc.xml · nonDerivative · entry 1

BROOKS D MAYSON · CIK 0001194777 · Vice President & GM, IBU

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,025

F1 · shares: 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.

F2 · balance_after: Includes 172 shares purchased on June 30, 2024 pursuant to the Issuer's Employee Stock Purchase Plan.

SEC source: 0002022859-24-000033 · edgardoc.xml · nonDerivative · entry 1

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,325

F1 · shares: 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.

F2 · balance_after: Includes 172 shares purchased on June 30, 2024 pursuant to the Issuer's Employee Stock Purchase Plan.

SEC source: 0002022859-24-000030 · edgardoc.xml · nonDerivative · entry 1

SCHWARTZ STEPHEN S · CIK 0001247436 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 661

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000025 · edgardoc.xml · nonDerivative · entry 1

Vedula Srinivas · CIK 0001792564 · SVP, Customer Success

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,433

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 11, 2024.

SEC source: 0002022859-24-000023 · edgardoc.xml · nonDerivative · entry 2

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,033

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2024.

SEC source: 0002022859-24-000023 · edgardoc.xml · nonDerivative · entry 1

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,552

F1 · shares: The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 7, 2024.

SEC source: 0002022859-24-000020 · edgardoc.xml · nonDerivative · entry 1

TSINGOS CHRISTINE A · CIK 0001278861 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 42,918

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000019 · edgardoc.xml · nonDerivative · entry 1

Su May · CIK 0001918546 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,109

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000017 · edgardoc.xml · nonDerivative · entry 1

MILLER DAVID BRIAN · CIK 0001233488 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,817

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000018 · edgardoc.xml · nonDerivative · entry 1

SEAMS CHRISTOPHER A · CIK 0001212426 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,638

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000015 · edgardoc.xml · nonDerivative · entry 1

Kelley Stephen Douglas · CIK 0001443674 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,509

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000016 · edgardoc.xml · nonDerivative · entry 1

Lynch Susan D · CIK 0001784973 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 809

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000014 · edgardoc.xml · nonDerivative · entry 1

BERLINGHIERI LEO · CIK 0001202738 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,210

F1 · shares: The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share of ONTO Common Stock. 100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date.

SEC source: 0002022859-24-000006 · edgardoc.xml · nonDerivative · entry 1

Slicer Mark · CIK 0001930126 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,071

F1 · shares: 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.

SEC source: 0002022859-24-000004 · edgardoc.xml · nonDerivative · entry 2

YALDAEI RAMIL · CIK 0001976282 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,576

F1 · shares: 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.

SEC source: 0002022859-24-000004 · edgardoc.xml · nonDerivative · entry 1

YALDAEI RAMIL · CIK 0001976282 · Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,121

F1 · shares: 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.