Teradyne director granted 159 deferred stock units

Teradyne director Paul J. Tufano increased his holdings through deferred stock compensation rather than open-market buying.

Rhea-AI Filing Summary

Teradyne director Paul J. Tufano increased his holdings through deferred stock compensation rather than open-market buying. He acquired 159 shares of Teradyne common stock on March 26, 2026 as a grant, bringing his direct ownership to 65,045 shares.

The footnote explains this represents a deferral of his quarterly cash compensation into deferred stock units, which are calculated using the closing share price on the issuance date. These deferred stock units are settled one-for-one in common stock, generally within ninety days after he no longer serves as a non-employee director.

Insider Trade Summary

Grant/Award: 159 shares

Grant/Award 1 txn

Insider TUFANO PAUL J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	159	$0.00	$0.00

Holdings After Transaction: Common Stock — 65,045 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

Shares acquired: 159 shares Price per share: $0.00 per share Post-transaction holdings: 65,045 shares

3 metrics

Shares acquired 159 shares Grant of common stock on March 26, 2026

Price per share $0.00 per share Compensation-related grant, not open-market purchase

Post-transaction holdings 65,045 shares Total common stock directly owned after grant

Key Terms

deferred stock units, quarterly cash compensation, non-employee director

3 terms

deferred stock units financial

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

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

quarterly cash compensation financial

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

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"

FAQ

What did Teradyne (TER) director Paul J. Tufano report in this Form 4?

Director Paul J. Tufano reported acquiring 159 shares of Teradyne common stock as a compensation-related grant. This award came through deferring his quarterly cash compensation into deferred stock units that convert one-for-one into common shares after his board service ends.

How many Teradyne (TER) shares does Paul J. Tufano own after this transaction?

After the transaction, Paul J. Tufano directly owns 65,045 shares of Teradyne common stock. This total reflects the newly acquired 159-share grant, which was issued as deferred stock units in lieu of cash compensation for his role as a non-employee director.

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

No, the Form 4 does not show an open-market purchase. The 159 shares were acquired at a stated price of $0.00 per share as a grant tied to deferred cash compensation, not bought on the open market at prevailing trading prices.

How are the deferred stock units (DSUs) in the Teradyne (TER) filing calculated?

The number of deferred stock units is calculated using the closing price of Teradyne common stock on the issuance date. Each DSU represents a right to receive one common share when the non-employee director generally leaves the board and settlement occurs.

When will Teradyne (TER) settle Paul J. Tufano’s deferred stock units into shares?

The filing states that deferred stock units are generally settled one-for-one in common stock within ninety days after a non-employee director no longer serves in that capacity. At that time, Teradyne issues the corresponding common shares for the accumulated DSUs.

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Accepted by SEC EDGAR 03/30/2026 - 06:05 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^*

TUFANO PAUL J

(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		159(1)	A	$0(1)	65,045	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)