Teradyne director adds DSUs via dividend credits

Teradyne, Inc. director Ernest E. Maddock reported a small, routine equity compensation adjustment.

Rhea-AI Filing Summary

Teradyne, Inc. director Ernest E. Maddock reported a small, routine equity compensation adjustment. On this Form 4, he received 2 deferred stock units (DSUs) credited as dividend equivalents on existing DSUs, with no cash changing hands.

The filing notes these DSUs were issued in accordance with his election to receive dividends on DSUs in the form of additional DSUs, in an acquisition exempt under Exchange Act Rule 16b-3(d). After this transaction, Maddock directly holds 10,267 shares or share-settled units equivalent to common stock.

Insider Trade Summary

Other: 2 shares

Other 1 txn

Insider MADDOCK ERNEST E

Role Director

Type	Security	Shares	Price	Value
Other	Common Stock	2	$0.00	$0.00

Holdings After Transaction: Common Stock — 10,267 shares (Direct)

Footnotes (1)

1. F1. 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 l 6b-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.

Key Figures

Deferred stock units credited: 2 DSUs Holdings after transaction: 10,267 shares/units Restructuring shares: 2 shares

3 metrics

Deferred stock units credited 2 DSUs Dividend equivalents on existing DSUs for director

Holdings after transaction 10,267 shares/units Common stock or DSUs equivalent following Form 4 event

Restructuring shares 2 shares Classified as restructuring-type other transaction in summary

Key Terms

deferred stock units ("DSUs"), Exchange Act Rule 16b-3(d), dividends paid on DSUs, settled one-for-one in Common Stock

4 terms

deferred stock units ("DSUs") financial

"Represents deferred stock units ("DSUs") issued to the Reporting Person"

Exchange Act Rule 16b-3(d) regulatory

"Such acquisition is exempt under Exchange Act Rule l 6b-3(d)."

dividends paid on DSUs financial

"election to receive dividends paid on DSUs in the form of additional DSUs"

settled one-for-one in Common Stock financial

"DSUs are settled one-for-one in Common Stock generally within ninety days"

FAQ

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

What did Teradyne (TER) director Ernest Maddock report on this Form 4?

Ernest Maddock reported receiving 2 deferred stock units (DSUs) as dividend equivalents on existing DSUs. This is a routine, non-cash equity compensation adjustment, not an open-market stock purchase or sale, and is treated as exempt under Exchange Act Rule 16b-3(d).

How many Teradyne (TER) shares or units does Ernest Maddock hold after this transaction?

After the transaction, Ernest Maddock holds 10,267 shares or equivalent DSU-based interests in Teradyne common stock. The Form 4 shows this post-transaction balance resulting from the crediting of 2 additional DSUs as dividend equivalents under the company’s director compensation framework.

Was this Teradyne (TER) Form 4 an open-market buy or sell by Ernest Maddock?

No, this Form 4 does not reflect an open-market buy or sell. It records issuance of 2 deferred stock units as dividend equivalents on existing DSUs, a routine, non-cash equity compensation event that is exempt from short-swing profit rules under Exchange Act Rule 16b-3(d).

What are the deferred stock units (DSUs) mentioned in the Teradyne (TER) filing?

The DSUs are deferred stock units granted to a non-employee director, settled one-for-one in common stock. In this case, 2 additional DSUs were credited as dividends in lieu of cash, and they will generally be settled within ninety days after the director leaves the board.

How were dividends on Teradyne (TER) DSUs handled for Ernest Maddock?

Dividends on Ernest Maddock’s DSUs were paid in kind as additional DSUs rather than in cash. According to the filing, he elected to receive dividends on DSUs in the form of 2 extra DSUs, which are settled one-for-one in common stock upon ending board service.

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

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Accepted by SEC EDGAR 06/16/2026 - 05:15 PM 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).

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^*

MADDOCK ERNEST E

(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)
06/12/2026

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	06/12/2026		J(1)		2(1)	A	$0(1)	10,267	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 l 6b-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	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)