Teradyne director plans sale of 167 shares

TERADYNE, INC (TER) is the issuer for which director Mercedes Johnson has filed a notice of proposed sale of restricted securities under Rule 144.

Rhea-AI Filing Summary

TERADYNE, INC (TER) is the issuer for which director Mercedes Johnson has filed a notice of proposed sale of restricted securities under Rule 144. The filing covers the planned sale of 167 shares of common stock, originally acquired on May 10, 2016 through restricted stock vesting as compensation from the issuer.

The notice lists Fidelity Brokerage Services LLC as the broker and reports an approximate aggregate market value of 56997.10 for the 167 shares based on a price as of September 1, 2026. Johnson also reports prior Rule 144 sales over the past three months, each involving roughly 166–167 shares of TER common stock.

Key Figures

Shares to be sold: 167 shares of common stock Approximate aggregate market value: 56997.10 Acquisition date of shares: 05/10/2016 +3 more

6 metrics

Shares to be sold 167 shares of common stock Planned sale under Rule 144 for Mercedes Johnson

Approximate aggregate market value 56997.10 For 167 shares as of September 1, 2026

Acquisition date of shares 05/10/2016 Restricted stock vesting as compensation from issuer

Prior sale 1 167 shares for 61746.58 Sale of common stock on 06/02/2026

Prior sale 2 167 shares for 76820.00 Sale of common stock on 07/01/2026

Prior sale 3 166 shares for 59452.90 Sale of common stock on 08/03/2026

Key Terms

Rule 144, restricted stock vesting, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in 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.

restricted stock vesting financial

"Common | 05/10/2016 | Restricted Stock Vesting | Issuer"

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.

attorney-in-fact regulatory

"as attorney-in-fact for Mercedes Johnson"

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.

What does this Form 144 filing mean for TER (TER) shareholders?

It reports that director Mercedes Johnson intends to sell 167 shares of TER common stock under Rule 144. It is a disclosure of a proposed sale by an affiliate, not a company-level financing or earnings event.

How many TER (TER) shares does Mercedes Johnson plan to sell under this Form 144?

The notice covers a proposed sale of 167 shares of TER common stock. These shares were acquired on May 10, 2016 through restricted stock vesting as compensation from Teradyne, Inc.

What is the reported market value of the TER (TER) shares in this Form 144?

For the planned sale of 167 shares, the filing lists an approximate aggregate market value of 56997.10, based on market data as of September 1, 2026, with Fidelity Brokerage Services LLC identified as the broker.

What prior TER (TER) stock sales by Mercedes Johnson are disclosed in this Form 144?

The filing reports three prior sales of TER common stock in the past three months: 167 shares for 61746.58 on June 2, 2026, 167 shares for 76820.00 on July 1, 2026, and 166 shares for 59452.90 on August 3, 2026.

Who is executing the TER (TER) share sale for Mercedes Johnson?

The broker is Fidelity Brokerage Services LLC. The Form 144 is signed by /s/ Wade Moss, described as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Mercedes Johnson.

What type of TER (TER) securities are involved in this Form 144?

All securities referenced are common stock of Teradyne, Inc. The 167 shares covered by the proposed sale were acquired as restricted stock vesting on May 10, 2016 and are being sold under Rule 144.

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

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Available on EDGAR 09/01/2026 - 09:44 AM EDT Accepted by SEC EDGAR 09/01/2026 - 09:43 AM 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	0001225110
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	JOHNSON MERCEDES
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	167	56997.10	156340750	09/01/2026	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	05/10/2016	Restricted Stock Vesting	Issuer			167	05/10/2016	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
Mercedes Johnson 600 Riverpark Drive North Reading MA 01864	Common	06/02/2026	167	61746.58
Mercedes Johnson 600 Riverpark Drive North Reading MA 01864	Common	07/01/2026	167	76820.00
Mercedes Johnson 600 Riverpark Drive North Reading MA 01864	Common	08/03/2026	166	59452.90

144: Remarks and Signature

Remarks
Date of Notice	09/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	03/04/2026
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/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Mercedes Johnson
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)