Form 144: Proposed insider stock sales

The filing is a Form 144 notice relating to proposed or recent sale activity in the issuer's common stock.

Rhea-AI Filing Summary

The filing is a Form 144 notice relating to proposed or recent sale activity in the issuer's common stock. It lists sales by Regan Mills of 788 shares on 02/25/2026 for $262,301.56 and 252 shares on 04/02/2026 for $73,301.76, and references a Restricted Stock Vesting event dated 04/01/2026.

Insights

Securities Compliance Analyst

Routine Form 144 disclosure of insider sales and a restricted stock vesting.

The filing documents proposed or recent sales under Rule 144 and notes a Restricted Stock Vesting entry dated 04/01/2026. It identifies two reported dispositions by Regan Mills: 788 shares (02/25/2026) and 252 shares (04/02/2026), with corresponding dollar amounts.

These notices are procedural disclosures that permit resale under Rule 144 when conditions are met; cash‑flow treatment and whether sales were open‑market or otherwise are not specified in the excerpt.

Key Figures

Sale — Regan Mills: 788 shares Sale — Regan Mills: 252 shares Restricted stock vesting: event dated 04/01/2026

3 metrics

Sale — Regan Mills 788 shares sold 02/25/2026 for $262,301.56

Sale — Regan Mills 252 shares sold 04/02/2026 for $73,301.76

Restricted stock vesting event dated 04/01/2026 listed as 'Restricted Stock Vesting' under Securities To Be Sold

Key Terms

Restricted Stock Vesting, Compensation, Securities To Be Sold

3 terms

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

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

Securities To Be Sold regulatory

"144: Securities To Be Sold | Common | 04/01/2026"

FAQ

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

What does the TER Form 144 filing disclose?

It discloses reported sales and a vesting event. The filing lists 788 shares sold on 02/25/2026 for $262,301.56 and 252 shares sold on 04/02/2026 for $73,301.76, and a Restricted Stock Vesting dated 04/01/2026.

Who reported the stock transactions in the filing?

The filing identifies Regan Mills as the reporting person. The entries show two dispositions by Mills with dates, share counts, and dollar amounts as listed in the excerpt.

Does the Form 144 indicate proceeds go to the issuer?

The excerpt does not specify proceeds treatment. The listed entries show sale amounts for the reporting person, but the filing text does not state whether the issuer received any proceeds.

What is the significance of the 'Restricted Stock Vesting' entry?

The entry labeled Restricted Stock Vesting dated 04/01/2026 indicates shares became vested under a compensation arrangement. The filing records this vesting event but does not detail remaining restrictions or withholding.

Are the sale methods or trading plan details disclosed?

The provided excerpt does not describe sale methods or reference any trading plan. It lists share counts, dates, and dollar values without specifying whether trades were open‑market, pursuant to a plan, or otherwise.

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

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Accepted by SEC EDGAR 04/08/2026 - 10:04 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	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	16	5474.72	156555950	04/08/2026	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			16	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 Mills 600 Riverpark Drive North Reading MA 01864	Common	02/25/2026	788	262301.56
Regan Mills 600 Riverpark Drive North Reading MA 01864	Common	04/02/2026	252	73301.76

144: Remarks and Signature

Remarks
Date of Notice	04/08/2026
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/ Gary Redman, 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)