Teradyne director proposes $67.3K share sale

The notice also lists Johnson's sales during the preceding three months, with transactions dated July 1, August 3 and September 1, 2026.

Rhea-AI Filing Summary

Teradyne, Inc. (TER) director Mercedes Johnson reported a proposed sale of 167 common shares through Fidelity Brokerage Services LLC, with an aggregate market value of $67,284.30 and an approximate sale date of October 1, 2026. The notice lists 156,340,750 shares outstanding. It also reports Johnson sold 167 shares on July 1, 166 on August 3, and 167 on September 1, 2026.

Key Figures

Proposed sale: 167 shares Aggregate market value: $67,284.30 Shares outstanding: 156,340,750 shares +3 more

6 metrics

Proposed sale 167 shares Common shares; approximate sale date October 1, 2026

Aggregate market value $67,284.30 Proposed sale

Shares outstanding 156,340,750 shares Securities information

Prior sale 167 shares; $76,820.00 aggregate market value July 1, 2026

Prior sale 166 shares; $59,452.90 aggregate market value August 3, 2026

Prior sale 167 shares; $56,997.10 aggregate market value September 1, 2026

Key Terms

Rule 144, Restricted Stock Vesting, Shares outstanding

3 terms

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.

Restricted Stock Vesting financial

"Nature of acquisition: 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.

Shares outstanding financial

"Number of shares or other units outstanding"

Shares outstanding are the total number of a company’s stock units held by all shareholders, including institutional investors and company insiders — think of them as the total number of slices of the company’s ownership pie. Investors use this number to calculate how much of the company each share represents, and it directly affects per-share measures like earnings per share, ownership percentage and valuation; when the slice count changes, an investor’s claim and the company’s per-share metrics change too.

FAQ

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

How many TER shares does director Mercedes Johnson propose to sell?

Mercedes Johnson's notice covers a proposed sale of 167 common shares, with an aggregate market value of $67,284.30 and an approximate sale date of October 1, 2026. Fidelity Brokerage Services LLC is listed as the broker.

What TER shares did Mercedes Johnson sell in the three months before the notice?

During the preceding three months, Mercedes Johnson reported sales of 167 common shares on July 1, 2026, 166 shares on August 3, 2026, and 167 shares on September 1, 2026. Their reported aggregate market values were $76,820.00, $59,452.90, and $56,997.10, respectively.

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

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Available on EDGAR 10/01/2026 - 11:52 AM Accepted by SEC EDGAR 10/01/2026 - 11:51 AM 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	67284.30	156340750	10/01/2026	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	07/01/2026	167	76820.00
Mercedes Johnson 600 Riverpark Drive North Reading MA 01864	Common	08/03/2026	166	59452.90
Mercedes Johnson 600 Riverpark Drive North Reading MA 01864	Common	09/01/2026	167	56997.10

144: Remarks and Signature

Remarks
Date of Notice	10/01/2026
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/ Margaret Campbell, 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)