Onto Innovation (ONTO) director sells 1,000 shares at $302.30

Q: What insider transaction did ONTO director Susan D. Lynch report for ONTO?

Susan D. Lynch reported a sale of 1,000 shares of ONTO INNOVATION INC. common stock on 2026-08-21. The transaction was coded as a sale in an open market or private transaction under Form 4 reporting rules.

Q: At what price were the ONTO shares sold in this Form 4 filing?

The 1,000 ONTO shares were sold at a price of $302.30 per share. This figure is reported as the transaction price per share for the common stock sale on 2026-08-21.

Q: How many ONTO shares does Susan D. Lynch hold after the reported sale?

Following the reported sale, Susan D. Lynch directly holds 2,684 shares of ONTO INNOVATION INC. common stock. This post-transaction holding amount is stated in the Form 4 data.

Q: What role does the reporting person hold at ONTO INNOVATION INC. (ONTO)?

The reporting person, Susan D. Lynch, is listed as a director of ONTO INNOVATION INC. in the Form 4. She is not reported as an officer or 10% owner in this filing.

Q: How many total shares were sold in this ONTO Form 4 transaction summary?

The transaction summary shows a net-sell activity of 1,000 shares, consisting of one sale transaction and no purchases, exercises, gifts, or derivative transactions reported in this Form 4.

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

ONTO INNOVATION INC. (ONTO) director Susan D. Lynch reported selling 1,000 shares of common stock on 2026-08-21 at a price of $302.30 per share in an open-market or private transaction. After this sale, she directly held 2,684 shares of ONTO common stock. The sale was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026, indicating the transaction followed a pre-arranged trading schedule.

Insider Trade Summary 10b5-1

Net Seller: 1,000 shares

Net Sell 1 txn

Insider Lynch Susan D

Role Director

Sold 1,000 shs ($302K)

Type	Security	Shares	Price	Value
Sale	Common Stock ^F1	1,000	$302.30	$302K

Holdings After Transaction: Common Stock — 2,684 shares (Direct)

Footnotes (1)

F1. The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026.

Key Figures

Shares sold: 1,000 shares of Common Stock Sale price per share: $302.30 per share Shares held after transaction: 2,684 shares +1 more

4 metrics

Shares sold 1,000 shares of Common Stock Sale on 2026-08-21 by director Susan D. Lynch

Sale price per share $302.30 per share Price for the 1,000 ONTO shares sold on 2026-08-21

Shares held after transaction 2,684 shares Direct holdings of Susan D. Lynch after the reported sale

Transactions under Rule 10b5-1 plan 1 transaction Sale effected pursuant to a Rule 10b5-1 trading plan adopted May 22, 2026

Key Terms

Rule 10b5-1 trading plan, Form 4, open market or private transaction

3 terms

Rule 10b5-1 trading plan regulatory

"The stock sales reported ... were effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

Form 4 regulatory

"The stock sales reported on this Form 4 were effected pursuant to a Rule"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

open market or private transaction financial

"transaction_code_description: Sale in open market or private transaction"

FAQ

What insider transaction did ONTO director Susan D. Lynch report for ONTO?

Susan D. Lynch reported a sale of 1,000 shares of ONTO INNOVATION INC. common stock on 2026-08-21. The transaction was coded as a sale in an open market or private transaction under Form 4 reporting rules.

At what price were the ONTO shares sold in this Form 4 filing?

The 1,000 ONTO shares were sold at a price of $302.30 per share. This figure is reported as the transaction price per share for the common stock sale on 2026-08-21.

How many ONTO shares does Susan D. Lynch hold after the reported sale?

Following the reported sale, Susan D. Lynch directly holds 2,684 shares of ONTO INNOVATION INC. common stock. This post-transaction holding amount is stated in the Form 4 data.

Was the ONTO insider sale made under a Rule 10b5-1 trading plan?

Yes. The filing states that the stock sales were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026, indicating the trades followed a pre-established plan.

What role does the reporting person hold at ONTO INNOVATION INC. (ONTO)?

The reporting person, Susan D. Lynch, is listed as a director of ONTO INNOVATION INC. in the Form 4. She is not reported as an officer or 10% owner in this filing.

How many total shares were sold in this ONTO Form 4 transaction summary?

The transaction summary shows a net-sell activity of 1,000 shares, consisting of one sale transaction and no purchases, exercises, gifts, or derivative transactions reported in this Form 4.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/25/2026 - 05:26 PM Accepted by SEC EDGAR 08/25/2026 - 05:25 PM

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^*

Lynch Susan D

(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)
08/21/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/21/2026		S		1,000⁽¹⁾	D	$302.3	2,684	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The stock sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 22, 2026.

	By: Eric French For: Susan Lynch	08/25/2026
	** 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)

Source: View Original Filing on SEC EDGAR