ONTO director granted 761 restricted stock units

SEAMS CHRISTOPHER A reported acquisition or exercise transactions in this Form 4 filing.

Accepted by SEC EDGAR 05/22/2026 - 04:53 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

SEAMS CHRISTOPHER A reported acquisition or exercise transactions in this Form 4 filing.

ONTO Innovation Inc. director Christopher A. Seams received an equity grant of 761 shares of common stock as restricted stock units. The award was at no cash cost per share and increases his directly held stake to 38,513 shares. All 761 RSUs vest in full one year from the grant date, meaning he will receive the underlying shares only if he remains eligible through that time.

Insider Trade Summary

Grant/Award: 761 shares

Grant/Award 1 txn

Insider SEAMS CHRISTOPHER A

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	761	$0.00	$0.00

Holdings After Transaction: Common Stock — 38,513 shares (Direct)

Holdings Before and After: Common Stock, 37,752 to 38,513 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

RSU grant size: 761 shares Grant price: $0.00 per share Post-transaction holdings: 38,513 shares +1 more

4 metrics

RSU grant size 761 shares Restricted stock units awarded to director Christopher A. Seams

Grant price $0.00 per share Stated transaction price for RSU award

Post-transaction holdings 38,513 shares Total common shares held directly after grant

Vesting schedule 100% after one year All 761 RSUs vest one year from grant date

Key Terms

restricted stock units ("RSUs"), contingent right, vest

3 terms

restricted stock units ("RSUs") financial

"The Reporting Person was granted restricted stock units ("RSUs"), each of which represents a contingent right to receive one (1) share"

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

contingent right financial

"each of which represents a contingent right to receive one (1) share of ONTO Common Stock"

vest financial

"100% of the shares of Common Stock subject to the RSU vest one (1) year from the grant date"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did ONTO director Christopher Seams report on this Form 4 for ONTO?

Christopher A. Seams reported receiving an equity award of 761 shares of ONTO Innovation common stock in the form of restricted stock units. These RSUs were granted at no cash cost and represent additional compensation rather than an open-market share purchase.

How many ONTO Innovation shares does Christopher Seams hold after this Form 4 transaction?

After the RSU grant, Christopher A. Seams holds 38,513 shares of ONTO Innovation common stock directly. This total includes the newly awarded 761 restricted stock units that will convert into shares when they vest according to the specified one-year schedule.

What are the key terms of the restricted stock units granted to ONTO director Seams?

The grant consists of 761 restricted stock units, each representing one share of ONTO common stock. According to the terms, 100% of these RSUs vest one year from the grant date, creating a contingent right that depends on satisfying continued service conditions.

Did Christopher Seams buy or sell ONTO Innovation shares in the open market?

No open-market buying or selling occurred in this Form 4. Christopher A. Seams received 761 shares as a restricted stock unit award at a stated price of $0.00 per share, reflecting stock-based compensation rather than a discretionary market transaction.

When will the 761 ONTO RSUs granted to Christopher Seams vest?

All 761 restricted stock units granted to Christopher A. Seams vest in a single tranche one year from the grant date. At that time, each RSU converts into one share of ONTO common stock, assuming the vesting conditions remain satisfied throughout the period.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

SEAMS CHRISTOPHER A

(Last) (First) (Middle)

C/O ONTO INNOVATION INC.

16 JONSPIN ROAD

(Street)

WILMINGTON MASSACHUSETTS 01887

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
ONTO INNOVATION INC. [ ONTO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/20/2026		A		761(1)	A	$0.0	38,513	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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.

	By: Eric French For: Christopher A. Seams	05/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)