Teradyne director defers pay into 75 DSUs

Teradyne, Inc. director Henry Andrew Chisholm acquired 75 shares of Common Stock-equivalent deferred stock units (DSUs) as a grant linked to his quarterly cash compensation.

Rhea-AI Filing Summary

Teradyne, Inc. director Henry Andrew Chisholm acquired 75 shares of Common Stock-equivalent deferred stock units (DSUs) as a grant linked to his quarterly cash compensation. The award was priced at $0 per share as it represents deferred fees rather than a market purchase.

Following this compensation-related acquisition, he directly holds 2,207 shares of Common Stock. According to the disclosure, DSUs are calculated using the closing stock price on the issuance date and are settled one-for-one in Common Stock, generally within ninety days after a non-employee director no longer serves on the board.

Insider Trade Summary

Grant/Award: 75 shares

Grant/Award 1 txn

Insider Henry Andrew Chisholm

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	75	$0.00	$0.00

Holdings After Transaction: Common Stock — 2,207 shares (Direct)

Footnotes (1)

1. F1. Represents the Reporting Person's deferral of his quarterly cash compensation into deferred stock units ("DSUs"). The number of DSUs is calculated based on the closing price of the Common Stock on their date of issuance. DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity.

Key Figures

DSU grant size: 75 shares Grant price: $0.0000 per share Shares held after: 2,207 shares +1 more

4 metrics

DSU grant size 75 shares Deferred stock units acquired as compensation on March 26, 2026

Grant price $0.0000 per share Compensation-related award, not an open-market purchase

Shares held after 2,207 shares Total Common Stock directly owned after the transaction

DSU settlement window within ninety days Settlement period after a non-employee director leaves the board

Key Terms

deferred stock units ("DSUs"), quarterly cash compensation, non-employee director

3 terms

deferred stock units ("DSUs") financial

"Represents the Reporting Person's deferral of his quarterly cash compensation into deferred stock units ("DSUs")."

quarterly cash compensation financial

"Represents the Reporting Person's deferral of his quarterly cash compensation into deferred stock units ("DSUs")."

non-employee director financial

"DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity."

FAQ

What did Teradyne (TER) director Henry Andrew Chisholm report in this Form 4?

Henry Andrew Chisholm reported acquiring 75 Common Stock-equivalent deferred stock units (DSUs) as compensation. The units came from deferring his quarterly cash fees and were valued at $0 per share because they are a non-cash grant, not an open-market purchase.

How many Teradyne (TER) shares does Henry Andrew Chisholm hold after this transaction?

After this DSU grant, Henry Andrew Chisholm directly holds 2,207 shares of Teradyne Common Stock. This figure reflects his position following the compensation-related acquisition of 75 deferred stock units, giving context to the relatively small size of the reported transaction.

What are deferred stock units (DSUs) in Teradyne (TER)'s director compensation?

Deferred stock units (DSUs) represent a director’s deferred cash compensation converted into stock-based units. At Teradyne, the number of DSUs is based on the closing stock price on the issuance date, and each DSU settles into one share of Common Stock when the director leaves the board.

When will Henry Andrew Chisholm’s Teradyne (TER) DSUs be settled into shares?

Chisholm’s DSUs will generally be settled one-for-one in Teradyne Common Stock within ninety days after he no longer serves as a non-employee director. This timing aligns with the company’s deferred compensation framework for board members, as described in the disclosure footnote.

Was the Teradyne (TER) Form 4 transaction an open-market stock purchase or sale?

The reported transaction was not an open-market trade. It was a grant classified as an acquisition of 75 DSUs at $0 per share, arising from deferral of quarterly cash compensation rather than a discretionary buy or sell in the market.

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Accepted by SEC EDGAR 03/30/2026 - 05:59 PM 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).

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^*

Henry Andrew Chisholm

(Last) (First) (Middle)

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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/26/2026

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	03/26/2026		A		75(1)	A	$0(1)	2,207	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. Represents the Reporting Person's deferral of his quarterly cash compensation into deferred stock units ("DSUs"). The number of DSUs is calculated based on the closing price of the Common Stock on their date of issuance. DSUs are settled one-for-one in Common Stock generally within ninety days of the date as of which a non-employee director no longer serves in such capacity.

	/s/ Ryan E. Driscoll, Attorney-in-Fact	03/30/2026
	** 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)