Onto Innovation director plans $302K share sale

ONTO INNOVATION INC.

Rhea-AI Filing Summary

ONTO INNOVATION INC. (ONTO) received a notice under Rule 144 that director Susan D. Lynch intends to sell up to 1,000 shares of ONTO common stock. The planned sale, through Morgan Stanley Smith Barney LLC Executive Financial Services on the NYSE, has an approximate aggregate market value of $302,300.00. The shares are restricted stock originally acquired from the issuer on 05/21/2026, with the proposed sale date listed as 08/21/2026.

Key Figures

Shares to be sold: 1,000 shares Aggregate market value: $302,300.00 Proposed sale date: 08/21/2026 +1 more

4 metrics

Shares to be sold 1,000 shares Common stock covered by the Rule 144 notice

Aggregate market value $302,300.00 Approximate market value of 1,000 ONTO common shares to be sold

Proposed sale date 08/21/2026 Planned sale date for the ONTO common stock under Rule 144

Acquisition date of restricted stock 05/21/2026 Date restricted ONTO shares were acquired from the issuer

Key Terms

Rule 144, Restricted Stock, aggregate market value, NYSE

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock financial

"Common | 05/21/2026 | Restricted Stock | Issuer"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

aggregate market value financial

"Common | Morgan Stanley Smith Barney LLC Executive Financial Services | 1000 | 302300.00"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

NYSE market

"49074247 | 08/21/2026 | NYSE"

A large, regulated marketplace where stocks and other securities are listed and traded, acting like a global auction house that matches buyers and sellers and helps determine share prices. It matters to investors because listing and trading there provide liquidity, price discovery, and regulatory oversight—making it easier to buy or sell holdings and giving companies a visible platform that can affect credibility and access to capital.

FAQ

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

What does the Form 144 filing disclose for ONTO?

The filing discloses that Susan D. Lynch, a director of ONTO INNOVATION INC. (ONTO), has filed a Rule 144 notice of intent to sell 1,000 shares of ONTO common stock with an approximate aggregate market value of $302,300.00.

How many ONTO shares are planned to be sold under this Form 144?

The notice states an intended sale of 1,000 shares of ONTO INNOVATION INC. common stock. This amount appears in both the securities information and securities-to-be-sold sections of the filing.

What is the approximate market value of the ONTO shares in this Form 144?

The filing lists an approximate aggregate market value of $302,300.00 for the 1,000 shares of ONTO INNOVATION INC. common stock covered by the Rule 144 notice.

Who is selling ONTO (ONTO) shares and in what capacity?

The planned sale involves shares held for the account of Susan D. Lynch, identified in the filing as a Director of ONTO INNOVATION INC. (ONTO).

When were the ONTO restricted shares acquired and when are they proposed to be sold?

The restricted ONTO shares were acquired from the issuer on 05/21/2026, and the proposed sale date listed is 08/21/2026, according to the Form 144 details.

Which broker is named for the ONTO Form 144 sale?

The broker listed is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, for the planned sale of ONTO INNOVATION INC. common stock on the NYSE.

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

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Accepted by SEC EDGAR 08/21/2026 - 04:17 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001784973
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	ONTO INNOVATION INC.
SEC File Number	001-39110
Address of Issuer	16 Jonspin Road Wilmington MASSACHUSETTS 01887
Phone	(978) 253-6200
Name of Person for Whose Account the Securities are To Be Sold	SUSAN D LYNCH
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	1000	302300.00	49074247	08/21/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/21/2026	Restricted Stock	Issuer			1000	05/21/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/22/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Susan D Lynch
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)