TER Form 144: Proposed sale of 252 vested shares

TER filer submitted a Form 144 notice reporting proposed sale of 252 shares of Common Stock tied to restricted stock vesting on 04/01/2026.

Accepted by SEC EDGAR 04/02/2026 - 10:41 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

TER filer submitted a Form 144 notice reporting proposed sale of 252 shares of Common Stock tied to restricted stock vesting on 04/01/2026. The filing also shows a prior disposition of 788 shares on 02/25/2026 by Regan N. Mills valued at $262,301.56. The shares appear held at Fidelity Brokerage Services LLC.

Insights

Corporate Governance Analyst

Routine Form 144 notice for a small, compensation-related sale.

The filing documents a proposed sale of 252 shares resulting from restricted stock vesting dated 04/01/2026. This is a common administrative step when restricted awards vest and the holder notifies broker/dealers of intent to sell.

Past activity includes a reported disposition of 788 shares on 02/25/2026 valued at $262,301.56. There is no information here indicating planned large-scale dilution or material corporate action; timing and method of any sale are not detailed in the excerpt.

Key Figures

Proposed shares to be sold: 252 shares Shares sold in past 3 months: 788 shares Value of prior disposition: $262,301.56 +2 more

5 metrics

Proposed shares to be sold 252 shares Restricted stock vesting on 04/01/2026

Shares sold in past 3 months 788 shares Disposition on 02/25/2026 by Regan N. Mills

Value of prior disposition $262,301.56 Proceeds reported for 788-share sale on 02/25/2026

Brokerage Fidelity Brokerage Services LLC Account/holding location shown in filing

Filing form Form 144 Notice of proposed sale of securities

Key Terms

Form 144, Restricted Stock Vesting, Compensation

3 terms

Form 144 regulatory

"Form 144 notice reporting proposed sale of Common Stock"

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

"Restricted Stock Vesting | Issuer | 04/01/2026"

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

"Compensation listed as the source for the vested shares"

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

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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	0002062527
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	Mills Regan
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	Officer

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	252	73301.76	156555950	04/02/2026	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	04/01/2026	Restricted Stock Vesting	Issuer			252	04/01/2026	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
Regan N. Mills 600 RIVERPARK DRIVE NORTH READING MA 01864	Common	02/25/2026	788	262301.56

144: Remarks and Signature

Remarks
Date of Notice	04/02/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/25/2025
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/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Regan Mills
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)