Teradyne director Marilyn Matz plans $140K sale

The 400 shares are identified as compensation from restricted-stock vesting on May 9, 2024; four prior sales are also listed.

Rhea-AI Filing Summary

Teradyne, Inc. director Marilyn Matz reported an intended sale of 400 common shares through Fidelity Brokerage Services LLC, with an aggregate market value of $140,000.00 and an approximate sale date of October 21, 2026. The shares are listed as compensation from restricted-stock vesting on May 9, 2024. The notice also lists four sales in the preceding three months: 1,200 shares on August 17, 800 on September 15, 400 on September 17, and 800 on October 15, 2026.

Key Figures

Common shares intended for sale: 400 shares Aggregate market value: $140,000.00 Shares outstanding: 156,340,750 shares +4 more

7 metrics

Common shares intended for sale 400 shares Marilyn Matz; approximate sale date October 21, 2026

Aggregate market value $140,000.00 Intended sale of 400 common shares

Shares outstanding 156,340,750 shares Common shares outstanding reported

Shares sold 1,200 shares August 17, 2026

Shares sold 800 shares September 15, 2026

Shares sold 400 shares September 17, 2026

Shares sold 800 shares October 15, 2026

Key Terms

Restricted Stock Vesting, Rule 144, attorney-in-fact

3 terms

Restricted Stock Vesting financial

"Restricted Stock Vesting"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Rule 144 regulatory

"paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

attorney-in-fact regulatory

"as attorney-in-fact for Marilyn Matz"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

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

How many TER shares does Marilyn Matz plan to sell?

Marilyn Matz reported an intended sale of 400 common shares, with an aggregate market value of $140,000.00 and an approximate sale date of October 21, 2026.

What shares did Marilyn Matz sell in the three months before the notice?

The listed sales were 1,200 shares for $510,000.00 on August 17, 2026; 800 shares for $270,264.00 on September 15; 400 shares for $140,444.00 on September 17; and 800 shares for $273,024.00 on October 15.

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

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Available on EDGAR 10/21/2026 - 01:24 PM EDT Accepted by SEC EDGAR 10/21/2026 - 01:23 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001618274
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	TERADYNE, INC
SEC File Number	001-06462
Address of Issuer	600 RIVERPARK DRIVE NORTH READING MASSACHUSETTS 01864
Phone	978-370-2700
Name of Person for Whose Account the Securities are To Be Sold	MATZ MARILYN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	400	140000.00	156340750	10/21/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	05/09/2024	Restricted Stock Vesting	Issuer			400	05/09/2024	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Marilyn Matz 600 Riverpark Drive North Reading MA 01864	Common	08/17/2026	1200	510000.00
Marilyn Matz 600 Riverpark Drive North Reading MA 01864	Common	09/15/2026	800	270264.00
Marilyn Matz 600 Riverpark Drive North Reading MA 01864	Common	09/17/2026	400	140444.00
Marilyn Matz 600 Riverpark Drive North Reading MA 01864	Common	10/15/2026	800	273024.00

144: Remarks and Signature

Remarks
Date of Notice	10/21/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/13/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Jennifer Ruchti, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Marilyn Matz
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)