Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * MACDONALD LAURA ANN 2. Issuer Name and Ticker or Trading Symbol COGNEX CORP [CGNX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP and PAO (Last) (First) (Middle) 1 VISION DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 09/05/2025 (Street) NATICK, MA 01760 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) 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 09/05/2025 S(1) 2,666 D $45.00 4,593 D Common Stock 20 I By Child(2)

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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 Underlying Securities (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 of Derivative Security: 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

Non-Qualified Stock Option (right to buy)

$33.04

02/18/2026

02/18/2035

Common Stock

33,168

33,168

D

Non-Qualified Stock Option (right to buy)

$38.39

02/21/2018

02/21/2027

Common Stock

12,500

12,500

D

Non-Qualified Stock Option (right to buy)

$39.44

02/20/2025

02/20/2034

Common Stock

37,698

37,698

D

Non-Qualified Stock Option (right to buy)

$47.21

02/21/2024

02/21/2033

Common Stock

30,492

30,492

D

Non-Qualified Stock Option (right to buy)

$48.28

05/01/2022

05/01/2029

Common Stock

10,000

10,000

D

Non-Qualified Stock Option (right to buy)

$50.94

02/18/2021

02/18/2030

Common Stock

42,500

42,500

D

Non-Qualified Stock Option (right to buy)

$51.49

02/19/2020

02/19/2029

Common Stock

30,000

30,000

D

Non-Qualified Stock Option (right to buy)

$56.44

02/20/2019

02/20/2028

Common Stock

15,000

15,000

D

Non-Qualified Stock Option (right to buy)

$64.43

02/22/2023

02/22/2032

Common Stock

23,891

23,891

D

Non-Qualified Stock Option (right to buy)

$90.50

02/16/2022

02/16/2031

Common Stock

13,946

13,946

D

Restricted Stock Unit

$ 0

02/21/2024

02/21/2026

Common Stock

2,754

2,754

D

Restricted Stock Unit

$ 0

02/20/2025

02/20/2027

Common Stock

5,071

5,071

D

Restricted Stock Unit

$ 0

03/15/2025

03/15/2027

Common Stock

982

982

D

Restricted Stock Unit

$ 0

02/18/2026

02/18/2028

Common Stock

12,107

12,107

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MACDONALD LAURA ANN 1 VISION DRIVE NATICK, MA 01760			VP and PAO

Signatures

Laura A. MacDonald		09/08/2025
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	These shares were disposed of in an open market sale pursuant to a trading plan adopted by the reporting person in accordance with Rule 10b5-1 under the Securities Exchange Act of 1934, as amended.
(2)	Held by reporting person's child. The reporting person disclaims beneficial ownership of these securities except to the extent of her pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purpose.

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