Were the recent TER CEO share sales made under a Rule 10b5-1 plan?

Yes. The reported Teradyne share transactions were carried out under a sales plan adopted on February 12, 2026, intended to comply with Rule 10b5-1. Such plans pre-schedule trades, making the timing less indicative of the insider’s short-term outlook.

Teradyne (TER) CEO sells 8,597 shares and exercises options under 10b5-1 plan

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Teradyne, Inc. President and CEO Gregory Stephen Smith exercised stock options for 4,597 shares of common stock at $72.10 per share and sold 8,597 shares at $338.98 per share. After these transactions, he directly holds 124,469.5729 common shares. The trades were executed under a pre-arranged Rule 10b5-1 sales plan adopted on February 12, 2026.

Insider Trade Summary 10b5-1

Net Seller: 8,597 shares ($2,914,211)

Net Sell 3 txns

Insider Smith Gregory Stephen

Role President and CEO

Sold 8,597 shs ($2.91M)

Type	Security	Shares	Price	Value
Exercise	Stock Option (Right to Buy)	4,597	$0.00	--
Exercise	Common Stock	4,597	$72.10	$331K
Sale	Common Stock	8,597	$338.98	$2.91M

Holdings After Transaction: Stock Option (Right to Buy) — 0 shares (Direct, null); Common Stock — 133,066.573 shares (Direct, null)

Footnotes (1)

The reported transactions were effected pursuant to a sales plan adopted by the Reporting Person on February 12, 2026 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934. This option was granted under the Issuer's 2006 Equity and Cash Compensation Incentive Plan, and became exercisable at the rate of 25% per year beginning on January 24, 2021, the first anniversary of the grant.

Key Figures

Shares sold: 8,597 shares Sale price: $338.98 per share Options exercised: 4,597 shares +4 more

7 metrics

Shares sold 8,597 shares Open-market sale of common stock on May 15, 2026 at $338.98

Sale price $338.98 per share Price for 8,597 common shares sold on May 15, 2026

Options exercised 4,597 shares Stock option exercise of common stock on May 15, 2026

Exercise price $72.10 per share Conversion or exercise price for 4,597 option shares

Shares owned after sale 124,469.5729 shares Direct common stock ownership after transactions

Net buy/sell shares -8,597 shares Net-sell direction from transaction summary

Exercise shares (summary) 4,597 shares ExerciseShares in transactionSummary for derivative exercise

Key Terms

Rule 10b5-1, Stock Option (Right to Buy), 2006 Equity and Cash Compensation Incentive Plan, open-market sale

4 terms

Rule 10b5-1 regulatory

"intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Stock Option (Right to Buy) financial

"security_title": "Stock Option (Right to Buy)""

2006 Equity and Cash Compensation Incentive Plan financial

"This option was granted under the Issuer's 2006 Equity and Cash Compensation Incentive Plan"

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Form 4 Insider Transactions: What Each Field Means →

05/19/2026 - 02:27 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Smith Gregory Stephen

(Last)

(First)

(Middle)

C/O TERADYNE, INC.

600 RIVERPARK DRIVE

(Street)

NORTH READING

MASSACHUSETTS

01864

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TERADYNE, INC [ TER ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President and CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	05/15/2026		M⁽¹⁾		4,597	A	$72.1	133,066.5729	D
Common Stock	05/15/2026		S⁽¹⁾		8,597	D	$338.98	124,469.5729	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Stock Option (Right to Buy)	$72.1	05/15/2026		M⁽¹⁾			4,597	⁽²⁾	01/24/2027	Common Stock	4,597	$0	0	D

Explanation of Responses:

1. The reported transactions were effected pursuant to a sales plan adopted by the Reporting Person on February 12, 2026 and intended to comply with Rule 10b5-1 under the Securities Exchange Act of 1934.

2. This option was granted under the Issuer's 2006 Equity and Cash Compensation Incentive Plan, and became exercisable at the rate of 25% per year beginning on January 24, 2021, the first anniversary of the grant.

	/s/ Ryan E. Driscoll, Attorney-in-Fact	05/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions did TER CEO Gregory Stephen Smith report?

Gregory Stephen Smith reported exercising stock options for 4,597 Teradyne shares at $72.10 and selling 8,597 common shares at $338.98. These combined actions reflect an option exercise paired with an open-market sale on the same day.

How many Teradyne (TER) shares does the CEO hold after these trades?

After the reported transactions, Gregory Stephen Smith directly holds 124,469.5729 shares of Teradyne common stock. This figure reflects his remaining direct ownership following the option exercise and the 8,597-share open-market sale on May 15, 2026.

What options did the Teradyne CEO exercise in this Form 4 filing?

The CEO exercised a stock option covering 4,597 Teradyne shares at a conversion or exercise price of $72.10 per share. The option was granted under the 2006 Equity and Cash Compensation Incentive Plan and vested 25% each year starting January 24, 2021.

Does the Teradyne CEO have remaining derivative options after these transactions?

The Form 4 shows a derivative transaction for 4,597 option shares with a post-transaction derivative balance of 0.0000, and the derivative summary is empty. This indicates the specific reported stock option position was fully exercised in this filing.