Teradyne (NASDAQ: TER) CEO sells 4,000 shares under 10b5-1 plan

Rhea-AI Filing Summary

Teradyne, Inc. President and CEO Gregory Stephen Smith reported an open-market sale of 4,000 shares of Common Stock on June 15, 2026 at an average price of $423.03 per share.

After this transaction, he directly holds 120,469.5729 shares. The filing notes the sale was made under a pre-arranged Rule 10b5-1 sales plan adopted on February 12, 2026, indicating it was scheduled in advance rather than timed discretionarily.

Insider Trade Summary 10b5-1

Net Seller: 4,000 shares ($1,692,120)

Net Sell 1 txn

Insider Smith Gregory Stephen

Role President and CEO

Sold 4,000 shs ($1.69M)

Type	Security	Shares	Price	Value
Sale	Common Stock	4,000	$423.03	$1.69M

Holdings After Transaction: Common Stock — 120,469.573 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares sold: 4,000 shares Average sale price: $423.03 per share Shares held after sale: 120,469.5729 shares +3 more

6 metrics

Shares sold 4,000 shares Open-market sale of Common Stock on June 15, 2026

Average sale price $423.03 per share Price for 4,000 shares sold by CEO

Shares held after sale 120,469.5729 shares Direct ownership after the transaction

Net insider activity -4,000 shares Net-sell direction in transaction summary

Transaction code S (sale) Open-market or private sale of Common Stock

Plan adoption date February 12, 2026 Date Rule 10b5-1 sales plan was adopted

Key Terms

Rule 10b5-1, open-market sale, Common Stock, sales plan

4 terms

Rule 10b5-1 regulatory

"intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934"

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.

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

sales plan financial

"reported transactions were effected pursuant to a sales plan adopted by the Reporting Person"

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Form 4 Insider Transactions: What Each Field Means →

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)
06/15/2026

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	06/15/2026		S(1)		4,000	D	$423.03	120,469.5729	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	06/16/2026
	** 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)

FAQ

What did Teradyne (TER) CEO Gregory Smith report in this Form 4?

Gregory Stephen Smith reported selling 4,000 shares of Teradyne Common Stock. The sale occurred at an average price of $423.03 per share and was disclosed as an open-market transaction, providing transparency into recent insider trading activity at the company.

At what price did the Teradyne CEO sell his shares in this filing?

The Teradyne CEO’s Form 4 shows an average sale price of $423.03 per share. This price applies to 4,000 shares of Common Stock sold in an open-market transaction on June 15, 2026, as reported in the insider trading disclosure.

How many Teradyne shares does the CEO hold after the reported sale?

After the reported transaction, the CEO directly holds 120,469.5729 Teradyne shares. This post-transaction balance in the Form 4 helps investors gauge the scale of the sale relative to his remaining ownership position in the company’s Common Stock.

Was the Teradyne CEO’s share sale made under a Rule 10b5-1 plan?

Yes. A footnote states the transactions were made under a sales plan adopted on February 12, 2026, intended to comply with Rule 10b5-1. Such plans pre-schedule trades, reducing the significance of timing as an indicator of insider sentiment.

What type of transaction is disclosed in this Teradyne Form 4?

The filing discloses an open-market sale of Common Stock, coded as “S.” This means the CEO sold shares into the market rather than receiving a grant or exercising options, offering clarity on the nature of the insider transaction.