Teradyne insider Matz plans $510K stock sale

Teradyne, Inc. insider Marilyn Matz has filed a Form 144 notice for the proposed sale of 1,200 shares of Teradyne common stock through Fidelity Brokerage Services LLC on or about August 17, 2026, to be sold on the NASDAQ.

Rhea-AI Filing Summary

Teradyne, Inc. insider Marilyn Matz has filed a Form 144 notice for the proposed sale of 1,200 shares of Teradyne common stock through Fidelity Brokerage Services LLC on or about August 17, 2026, to be sold on the NASDAQ. These shares were acquired from the issuer as restricted stock vesting on May 7, 2021 as compensation. The filing also lists prior Teradyne share sales by Matz during the past three months.

Key Figures

Planned shares to be sold: 1,200 shares Aggregate market value of planned sale: $510,000.00 Shares acquired via restricted stock vesting: 1,200 shares +3 more

6 metrics

Planned shares to be sold 1,200 shares Common stock to be sold through Fidelity Brokerage Services LLC

Aggregate market value of planned sale $510,000.00 Planned sale of 1,200 Teradyne common shares on or about August 17, 2026

Shares acquired via restricted stock vesting 1,200 shares Acquired from issuer on May 7, 2021 as compensation

Sale on May 21, 2026 400 shares; $140,000.00 Common stock sold during the past 3 months

Sale on June 15, 2026 1,200 shares; $507,636.00 Common stock sold during the past 3 months

Sale on July 15, 2026 1,200 shares; $427,572.00 Common stock sold during the past 3 months

Key Terms

Form 144, restricted stock vesting, compensation

3 terms

Form 144 regulatory

"Teradyne, Inc. insider Marilyn Matz has filed a Form 144 notice"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

restricted stock vesting financial

"These shares were acquired from the issuer as 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.

compensation financial

"acquired from the issuer as restricted stock vesting on May 7, 2021 as compensation"

FAQ

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

What does Teradyne (TER) insider Marilyn Matz disclose in this Form 144?

Marilyn Matz discloses a planned sale of 1,200 shares of Teradyne common stock under Form 144. The notice also reports prior sales over the past three months, including blocks of 400 and 1,200 shares on specific 2026 dates.

How many Teradyne (TER) shares does Marilyn Matz plan to sell and through whom?

Matz plans to sell 1,200 shares of Teradyne common stock through Fidelity Brokerage Services LLC. The proposed sale is listed for August 17, 2026 on the NASDAQ, with an aggregate market value of $510,000.00 for the planned shares.

When and how did Marilyn Matz acquire the Teradyne (TER) shares being registered on Form 144?

The 1,200 shares being registered were acquired on May 7, 2021 through restricted stock vesting from the issuer. The acquisition is identified as compensation, reflecting stock-based awards that have vested into common shares.

What Teradyne (TER) share sales has Marilyn Matz made in the past three months?

Matz reports three recent sales: 400 shares on May 21, 2026 for $140,000.00, 1,200 shares on June 15, 2026 for $507,636.00, and 1,200 shares on July 15, 2026 for $427,572.00.

On which market will Marilyn Matz’s planned Teradyne (TER) Form 144 sale occur?

The proposed Form 144 sale of 1,200 Teradyne shares is listed to occur on the NASDAQ. The planned broker is Fidelity Brokerage Services LLC, with an indicated aggregate market value of $510,000.00 for the shares to be sold.

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

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Accepted by SEC EDGAR 08/17/2026 - 12:33 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	1200	510000.00	156340750	08/17/2026	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	05/07/2021	Restricted Stock Vesting	Issuer			1200	05/07/2021	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	05/21/2026	400	140000.00
Marilyn Matz 600 Riverpark Drive North Reading MA 01864	Common	06/15/2026	1200	507636.00
Marilyn Matz 600 Riverpark Drive North Reading MA 01864	Common	07/15/2026	1200	427572.00

144: Remarks and Signature

Remarks
Date of Notice	08/17/2026
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)