Teradyne, Inc. Insider Trading

TER

Last 12 months

Insiders sold $16M and bought nothing on the open market.

All of the selling was scheduled in advance under 10b5-1 plans. The last open-market buy by an executive or director was in Mar 2024.

Net open-market

−$16M

0 buys · 34 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

0 / 6

executives and directors

Last open-market buy

Mar 2024

Mar 15, 2024

Get an email when TER's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Nov 2	Mercedes Johnson Director	Sold10b5-1 plan	166	$275.44	46K	2.1%	Form 4
Oct 21	Marilyn Matz Director	Sold10b5-1 plan	400	$350.00	140K	3.1%	Form 4
Oct 15	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	4,000	$341.28	$1.37M	3.7%	Form 4
Oct 15	Marilyn Matz Director	Sold10b5-1 plan	800	$341.28	273K	5.8%	Form 4
Oct 1	Mercedes Johnson Director	Sold10b5-1 plan	167	$402.90	67K	2.0%	Form 4
Sep 17	Marilyn Matz Director	Sold10b5-1 plan	400	$351.11	140K	2.8%	Form 4
Sep 15	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	4,000	$337.83	$1.35M	3.6%	Form 4
Sep 15	Marilyn Matz Director	Sold10b5-1 plan	800	$337.83	270K	5.3%	Form 4
Sep 1	Mercedes Johnson Director	Sold10b5-1 plan	167	$341.30	57K	2.0%	Form 4
Aug 17	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	4,000	$425.00	$1.7M	3.4%	Form 4
Aug 17	Marilyn Matz Director	Sold10b5-1 plan	1,200	$425.00	510K	7.4%	Form 4
Aug 3	Mercedes Johnson Director	Sold10b5-1 plan	166	$358.15	59K	1.9%	Form 4
Jul 15	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	4,000	$356.31	$1.43M	3.3%	Form 4
Jul 15	Marilyn Matz Director	Sold10b5-1 plan	1,200	$356.31	428K	6.9%	Form 4
Jul 1	Mercedes Johnson Director	Sold10b5-1 plan	167	$460.00	77K	1.9%	Form 4
Jun 15	Marilyn Matz Director	Sold10b5-1 plan	1,200	$423.03	508K	6.4%	Form 4
Jun 15	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	4,000	$423.03	$1.69M	3.2%	Form 4
Jun 2	Mercedes Johnson Director	Sold10b5-1 plan	167	$369.74	62K	1.9%	Form 4
May 21 – 22	Shannon John Poulin President, Semiconductor Test	Sold10b5-1 plan 2 parts	1,664	$349.17 average	581K	9.6%	Form 4
May 21	Marilyn Matz Director	Sold10b5-1 plan	400	$350.00	140K	2.1%	Form 4
May 15	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	8,597	$338.98	$2.91M	6.5%	Form 4
May 15	Marilyn Matz Director	Sold10b5-1 plan	800	$338.98	271K	4.0%	Form 4
May 7	Ryan Driscoll VP, General Counsel, Secretary	Sold10b5-1 plan	680	$377.60	257K	8.1%	Form 4
Apr 8	Regan Mills President, Product Test	Sold10b5-1 plan	16	$342.17	5K	0.1%	Form 4
Apr 6	Mercedes Johnson Director	Sold10b5-1 plan	625	$312.20	195K	7.1%	Form 4
Apr 2	Regan Mills President, Product Test	Sold10b5-1 plan	252	$290.88	73K	2.2%	Form 4
Mar 5	Mercedes Johnson Director	Sold10b5-1 plan	625	$299.20	187K	6.6%	Form 4
Feb 25	Regan Mills President, Product Test	Sold10b5-1 plan	788	$332.87	262K	6.2%	Form 4
Feb 5	Mercedes Johnson Director	Sold10b5-1 plan	625	$266.98	167K	6.2%	Form 4
Jan 5	Mercedes Johnson Director	Sold10b5-1 plan	625	$211.85	132K	5.8%	Form 4
Dec 12, 2025	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	1,108	$201.31	223K	1.2%	Form 4
Dec 5, 2025	Mercedes Johnson Director	Sold10b5-1 plan	625	$200.00	125K	5.5%	Form 4
Nov 12, 2025	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	1,108	$180.20	200K	1.2%	Form 4
Nov 5, 2025	Mercedes Johnson Director	Sold10b5-1 plan	625	$177.05	111K	5.2%	Form 4
Oct 10, 2025	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	1,108	$145.24	161K	1.2%	Form 4
Oct 6, 2025	Mercedes Johnson Director	Sold10b5-1 plan	625	$147.90	92K	5.0%	Form 4
Sep 22, 2025	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	554	$126.39	70K	0.6%	Form 4
Sep 12, 2025	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	554	$115.00	64K	0.6%	Form 4
Sep 5, 2025	Mercedes Johnson Director	Sold10b5-1 plan	625	$120.06	75K	4.7%	Form 4
Aug 12, 2025	Gregory Stephen Smith President and CEO	Sold10b5-1 plan	554	$106.00	59K	0.6%	Form 4

Nov 210b5-1 plan
Mercedes Johnson
Director · sold 166 at $275.44
46K
2.1% of stake
Oct 2110b5-1 plan
Marilyn Matz
Director · sold 400 at $350.00
140K
3.1% of stake
Oct 1510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 4,000 at $341.28
$1.37M
3.7% of stake
Oct 1510b5-1 plan
Marilyn Matz
Director · sold 800 at $341.28
273K
5.8% of stake
Oct 110b5-1 plan
Mercedes Johnson
Director · sold 167 at $402.90
67K
2.0% of stake
Sep 1710b5-1 plan
Marilyn Matz
Director · sold 400 at $351.11
140K
2.8% of stake
Sep 1510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 4,000 at $337.83
$1.35M
3.6% of stake
Sep 1510b5-1 plan
Marilyn Matz
Director · sold 800 at $337.83
270K
5.3% of stake
Sep 110b5-1 plan
Mercedes Johnson
Director · sold 167 at $341.30
57K
2.0% of stake
Aug 1710b5-1 plan
Gregory Stephen Smith
President and CEO · sold 4,000 at $425.00
$1.7M
3.4% of stake
Aug 1710b5-1 plan
Marilyn Matz
Director · sold 1,200 at $425.00
510K
7.4% of stake
Aug 310b5-1 plan
Mercedes Johnson
Director · sold 166 at $358.15
59K
1.9% of stake
Jul 1510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 4,000 at $356.31
$1.43M
3.3% of stake
Jul 1510b5-1 plan
Marilyn Matz
Director · sold 1,200 at $356.31
428K
6.9% of stake
Jul 110b5-1 plan
Mercedes Johnson
Director · sold 167 at $460.00
77K
1.9% of stake
Jun 1510b5-1 plan
Marilyn Matz
Director · sold 1,200 at $423.03
508K
6.4% of stake
Jun 1510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 4,000 at $423.03
$1.69M
3.2% of stake
Jun 210b5-1 plan
Mercedes Johnson
Director · sold 167 at $369.74
62K
1.9% of stake
May 21 – 2210b5-1 plan
Shannon John Poulin
President, Semiconductor Test · sold 1,664 at avg $349.17
581K
9.6% of stake
May 2110b5-1 plan
Marilyn Matz
Director · sold 400 at $350.00
140K
2.1% of stake
May 1510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 8,597 at $338.98
$2.91M
6.5% of stake
May 1510b5-1 plan
Marilyn Matz
Director · sold 800 at $338.98
271K
4.0% of stake
May 710b5-1 plan
Ryan Driscoll
VP, General Counsel, Secretary · sold 680 at $377.60
257K
8.1% of stake
Apr 810b5-1 plan
Regan Mills
President, Product Test · sold 16 at $342.17
5K
0.1% of stake
Apr 610b5-1 plan
Mercedes Johnson
Director · sold 625 at $312.20
195K
7.1% of stake
Apr 210b5-1 plan
Regan Mills
President, Product Test · sold 252 at $290.88
73K
2.2% of stake
Mar 510b5-1 plan
Mercedes Johnson
Director · sold 625 at $299.20
187K
6.6% of stake
Feb 2510b5-1 plan
Regan Mills
President, Product Test · sold 788 at $332.87
262K
6.2% of stake
Feb 510b5-1 plan
Mercedes Johnson
Director · sold 625 at $266.98
167K
6.2% of stake
Jan 510b5-1 plan
Mercedes Johnson
Director · sold 625 at $211.85
132K
5.8% of stake
Dec 12, 202510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 1,108 at $201.31
223K
1.2% of stake
Dec 5, 202510b5-1 plan
Mercedes Johnson
Director · sold 625 at $200.00
125K
5.5% of stake
Nov 12, 202510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 1,108 at $180.20
200K
1.2% of stake
Nov 5, 202510b5-1 plan
Mercedes Johnson
Director · sold 625 at $177.05
111K
5.2% of stake
Oct 10, 202510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 1,108 at $145.24
161K
1.2% of stake
Oct 6, 202510b5-1 plan
Mercedes Johnson
Director · sold 625 at $147.90
92K
5.0% of stake
Sep 22, 202510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 554 at $126.39
70K
0.6% of stake
Sep 12, 202510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 554 at $115.00
64K
0.6% of stake
Sep 5, 202510b5-1 plan
Mercedes Johnson
Director · sold 625 at $120.06
75K
4.7% of stake
Aug 12, 202510b5-1 plan
Gregory Stephen Smith
President and CEO · sold 554 at $106.00
59K
0.6% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch TER, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

TER is in 375 US ETFs. The largest of them, with TER's weight in each:

Spot a number that looks wrong? Check it in TER's SEC filings or

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Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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