[Form 4] TERADYNE, INC Insider Trading Activity

Rhea-AI Filing Summary

Teradyne director Mercedes Johnson reported a sale of company shares under a pre-set plan and retains significant ownership. The filing shows $147.9 per share sale of 625 shares on 10/06/2025 executed under a Rule 10b5-1 sales plan. After the sale the reporting person beneficially owns 10,113 shares directly and 1,876 shares indirectly through a trust for which she is trustee and sole beneficiary. The filing identifies the sale as part of a plan adopted on 02/03/2025, and is signed by an attorney-in-fact on 10/08/2025. The transaction is presented as routine insider disposition under a documented trading plan.

Positive

• Sale executed under a documented Rule 10b5-1 plan, which provides structural compliance protections
• Reporting person retains material ownership: 10,113 shares direct plus 1,876 shares indirect via trust

Negative

• Insider disposition occurred: 625 shares sold at $147.9, which modestly reduces direct holdings

Insights

Corporate Governance Specialist

Insider sale via a documented 10b5-1 plan; ownership remains material.

The director sold 625 shares at $147.9 on 10/06/2025 under a 10b5-1 plan adopted on 02/03/2025, which provides an affirmative defense to insider trading claims when properly implemented.

Remaining holdings show continued alignment: 10,113 shares direct and 1,876 indirect by trust. Watch for additional scheduled plan disclosures or further Form 4 filings within the next quarter if the plan contains ongoing sales.

Equity Markets Analyst

Transaction size is modest relative to typical director stakes but is price-sensitive.

A sale of 625 shares is a discrete liquidity event; the filing documents the sale price and that it occurred under a pre-existing plan, which reduces signal strength about private information.

Investors tracking insider activity should note the exact price $147.9 and the plan adoption 02/03/2025; any repeat filings at similar prices could indicate systematic disposition timing over the coming months.

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).

X

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^*

JOHNSON MERCEDES

(Last) (First) (Middle)

C/O TERADYNE, INC.

600 RIVERPARK DRIVE

(Street)

NORTH READING MA 01864

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TERADYNE, INC [ TER ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
10/06/2025

4. If Amendment, Date of 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

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	10/06/2025		S(1)		625	D	$147.9	10,113	D
Common Stock								1,876	I	By Trust(2)

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 shares were sold pursuant to a sales plan adopted by the Reporting Person on February 3, 2025 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

2. Shares held by The Mercedes Johnson Trust UAD 07/23/04 (the "Trust"), of which the Reporting Person is the trustee and sole beneficiary.

	/s/ Ryan E. Driscoll, Attorney-in-Fact	10/08/2025
	** 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.

FAQ

What did Mercedes Johnson report on the TER Form 4?

The filing reports a sale of 625 shares at $147.9 on 10/06/2025 executed under a 10b5-1 plan; post-transaction holdings are 10,113 direct shares and 1,876 indirect shares.

Was the sale part of a pre-arranged trading plan for TER insiders?

Yes. The sale was made pursuant to a sales plan adopted on 02/03/2025 intended to comply with Rule 10b5-1.

How much ownership does the reporting person retain after the sale?

After the reported transaction the reporting person beneficially owns 10,113 shares directly and 1,876 shares indirectly via The Mercedes Johnson Trust UAD 07/23/04.

Who signed the Form 4 for the reporting person?

The Form 4 was signed by Ryan E. Driscoll, Attorney-in-Fact on 10/08/2025.

Does the filing indicate any derivative transactions?

No. Table II for derivative securities shows no entries; only non-derivative common stock transactions are reported.