[Form 4] TERADYNE, INC Insider Trading Activity

Rhea-AI Filing Summary

Teradyne director and President & CEO Gregory Stephen Smith reported a sale of 554 shares of Teradyne common stock on 09/12/2025 at a price of $115 per share. The Form 4 shows 96,438.995 shares remained beneficially owned by Mr. Smith after the reported sale. The filing states the shares were sold under a sales plan adopted February 4, 2025 that was intended to comply with Rule 10b5-1, indicating the transaction followed a prearranged insider trading plan. The Form 4 was signed by an attorney-in-fact on 09/16/2025.

Positive

• Transaction disclosed promptly on Form 4 with specific date and price details
• Sale executed under a Rule 10b5-1 plan adopted February 4, 2025, indicating prearranged trades
• Clear post-transaction ownership reported as 96,438.995 shares

Negative

• Insider sale reported — 554 shares disposed, which may draw investor attention despite being modest

Insights

Corporate Governance Expert

TL;DR Routine insider sale under a 10b5-1 plan by the CEO and director; disclosure aligns with standard governance practices.

The Form 4 documents a small, scheduled disposition of 554 shares at $115 each by Gregory Stephen Smith, who holds the roles of President & CEO and director. The explicit disclosure that the sale was executed pursuant to a 10b5-1 plan adopted on February 4, 2025 signals adherence to an established trading framework designed to avoid opportunistic insider trading. The remaining beneficial ownership is reported precisely as 96,438.995 shares, which provides clear post-transaction ownership visibility. From a governance perspective, this is routine and compliant, with no indications in the filing of ad hoc or opportunistic timing.

Securities Analyst

TL;DR A disclosed, modest insider sale that is unlikely to be material to Teradyne’s capitalization or signal company-specific issues.

The transaction size — 554 shares at $115 — represents a de minimis disposition relative to the reported post-sale holding of 96,438.995 shares. The use of a Rule 10b5-1 sales plan reduces interpretive ambiguity for investors about the motivation and timing of the sale. The filing contains the transaction date and price, the plan adoption date, and the signature date via attorney-in-fact, which together meet standard Form 4 disclosure norms. No derivative transactions or additional material events are disclosed in this filing.

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

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

1. Name and Address of Reporting Person^*

Smith Gregory Stephen

(Last) (First) (Middle)

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
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
09/12/2025

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	09/12/2025		S(1)		554	D	$115	96,438.995	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 shares were sold pursuant to a sales plan adopted by the Reporting Person on February 4, 2025 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

	/s/ Ryan E. Driscoll, Attorney-in-Fact	09/16/2025
	** 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

How many Teradyne (TER) shares did Gregory Stephen Smith sell on 09/12/2025?

554 shares were sold on 09/12/2025 according to the Form 4.

At what price were the TER shares sold by the reporting person?

$115 per share is the reported sale price on the Form 4.

How many TER shares does Gregory Stephen Smith beneficially own after the reported sale?

96,438.995 shares are reported as beneficially owned following the transaction.

Was the sale part of a 10b5-1 plan?

Yes. The Form 4 states the shares were sold pursuant to a sales plan adopted February 4, 2025 intended to comply with Rule 10b5-1.

Who signed the Form 4 and when was it signed?

Signed by an attorney-in-fact, Ryan E. Driscoll, on 09/16/2025 as shown on the filing.