Teradyne (TER) director adds 25 deferred stock units from dividend election

Rhea-AI Filing Summary

TERADYNE, INC director Paul J. Tufano reported a small administrative change in his equity holdings. On March 13, 2026, he was credited with 25 deferred stock units (DSUs) in lieu of cash dividends on his existing DSUs, at no cash cost per unit. These DSUs are scheduled to be settled one-for-one in Teradyne common stock, generally within ninety days after he no longer serves as a non-employee director. Following this transaction, his directly held common stock and DSU-related position reported in the filing totals 64,886 shares, reflecting a routine, compensation-related adjustment rather than an open-market trade.

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

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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).

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 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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/13/2026

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	03/13/2026		J(1)		25(1)	A	$0(1)	64,886	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 deferred stock units ("DSUs") issued to the Reporting Person in accordance with his election to receive dividends paid on DSUs in the form of additional DSUs in lieu of cash. Such acquisition is exempt under Exchange Act Rule 16b-3(d). 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	03/17/2026
	** 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.

FAQ

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

Paul J. Tufano reported receiving 25 deferred stock units (DSUs) on March 13, 2026. These units were issued as dividend equivalents on his existing DSUs, with no cash paid, and will later convert one-for-one into Teradyne common stock.

Was there any open-market buying or selling of Teradyne (TER) stock in this Form 4?

No open-market trades were reported. The Form 4 shows an “other” transaction in which 25 DSUs were credited as dividends on existing DSUs, a routine compensation-related adjustment rather than a purchase or sale on the stock market.

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

After the transaction, the filing reports 64,886 shares of Teradyne common stock associated with Paul J. Tufano. This figure includes the effect of the 25 additional deferred stock units credited as dividend equivalents on March 13, 2026.

What are deferred stock units (DSUs) in the context of Teradyne (TER)?

Deferred stock units, or DSUs, are rights to receive Teradyne common shares in the future. For this director, DSUs are generally settled one-for-one in common stock within ninety days after he stops serving as a non-employee director.

How were the 25 DSUs for Teradyne (TER) director Paul J. Tufano created?

The 25 DSUs were issued according to his election to receive dividends on existing DSUs in the form of additional DSUs instead of cash. This acquisition is described as exempt under Exchange Act Rule 16b-3(d).