Teradyne CEO sells 4,000 shares at $425 each

TERADYNE, INC (TER) director and President & CEO Gregory Stephen Smith reported selling 4,000 shares of common stock on August 17, 2026 at $425.00 per share.

Rhea-AI Filing Summary

TERADYNE, INC (TER) director and President & CEO Gregory Stephen Smith reported selling 4,000 shares of common stock on August 17, 2026 at $425.00 per share. Following this sale, he holds 112,495.4075 shares directly. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan adopted on February 12, 2026.

Insider Trade Summary 10b5-1

Net Seller: 4,000 shares

Net Sell 1 txn

Insider Smith Gregory Stephen

Role President and CEO

Sold 4,000 shs ($1.70M)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	4,000	$425.00	$1.70M

Holdings After Transaction: Common Stock — 112,495.4075 shares (Direct)

Footnotes (1)

1. F1. The reported transactions were effected pursuant to a sales plan adopted by the Reporting Person on February 12, 2026 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

Key Figures

Shares sold: 4,000 shares Sale price per share: $425.00 per share Shares held after transaction: 112,495.4075 shares +2 more

5 metrics

Shares sold 4,000 shares Common stock sale on August 17, 2026

Sale price per share $425.00 per share Price for the 4,000-share sale on August 17, 2026

Shares held after transaction 112,495.4075 shares Direct holdings of Gregory Stephen Smith following the reported sale

Net shares sold in filing 4,000 shares Transaction summary net-sell shares for this Form 4

10b5-1 plan adoption date February 12, 2026 Adoption date of the sales plan governing the reported transaction

Key Terms

Rule 10b5-1, sales plan, Reporting Person, open market or private transaction

4 terms

Rule 10b5-1 regulatory

"intended to comply with Rule 10b5-1 under the Securities Exchange Act"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

sales plan financial

"reported transactions were effected pursuant to a sales plan adopted"

Reporting Person regulatory

"sales plan adopted by the Reporting Person on February 12, 2026"

open market or private transaction financial

"Sale in open market or private transaction"

FAQ

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

What insider transaction did TERADYNE, INC (TER) report for Gregory Stephen Smith?

Gregory Stephen Smith, President & CEO of TERADYNE, INC (TER), reported selling 4,000 shares of common stock. The sale occurred on August 17, 2026 at a price of $425.00 per share in an open market or private transaction.

How many TER (TERADYNE, INC) shares does CEO Gregory Stephen Smith hold after this sale?

After the reported sale, CEO Gregory Stephen Smith directly holds 112,495.4075 shares of TERADYNE, INC common stock. This figure reflects his position immediately following the 4,000-share disposition reported in the Form 4 filed for the August 17, 2026 transaction.

At what price did the CEO sell his TERADYNE, INC (TER) shares in this Form 4 filing?

The reported sale by the TERADYNE, INC CEO was executed at $425.00 per share. A total of 4,000 shares of common stock were sold in this transaction, which is characterized as a sale in open market or private transaction under code S.

Was the TERADYNE, INC (TER) CEO’s share sale under a Rule 10b5-1 plan?

Yes. The filing states the transactions were effected under a sales plan adopted on February 12, 2026 and intended to comply with Rule 10b5-1. Such plans pre-arrange trades, reducing the informational value of the transaction’s timing.

What role does Gregory Stephen Smith hold at TERADYNE, INC (TER) in this Form 4?

Gregory Stephen Smith is identified as both a director and an officer of TERADYNE, INC, serving as President and CEO. The Form 4 reports his personal, direct ownership transaction in TER common stock under these capacities.

How many TERADYNE, INC (TER) shares were sold in total in this Form 4?

The Form 4 reports a single transaction in which 4,000 shares of TERADYNE, INC common stock were sold. The transaction summary indicates net-sell 4,000 shares, with no reported purchases, exercises, or gifts in this filing.

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

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Accepted by SEC EDGAR 08/18/2026 - 11:14 AM EDT Learn about SEC filing dates

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^*

Smith Gregory Stephen

(Last) (First) (Middle)

C/O TERADYNE, INC.

600 RIVERPARK DRIVE

(Street)

NORTH READING MASSACHUSETTS 01864

(City) (State) (Zip)

UNITED STATES

(Country)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/17/2026		S(1)		4,000	D	$425	112,495.4075	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 reported transactions were effected pursuant to a sales plan adopted by the Reporting Person on February 12, 2026 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

	/s/ Ryan E. Driscoll, Attorney-in-Fact	08/18/2026
	** 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)