Teradyne, Inc. (TER) has 20 known insider and institutional holders on record. The largest holder is JAGIELA MARK E with 208,600 shares. Other notable holders include Beecher Gregory R and TUFANO PAUL J.
Over the last 12 months, insiders have made 72 transactions in TER stock — 33 buys (valued at $6.81M) and 19 sells (valued at $2.52M). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
TER Insider Ownership
Top Holder
JAGIELA MARK E
208,600 shares
Buys (12 mo)
33
$6.81M value
Sells (12 mo)
19
$2.52M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Jagiela Mark E |
CEO |
208,600 |
2023-01-31 |
|
| 2 |
Beecher Gregory R |
VP and CFO |
66,947 |
2019-02-01 |
|
| 3 |
Tufano Paul J |
Director |
65,045 |
2026-03-30 |
|
| 4 |
Guertin Timothy E |
Director |
62,729 |
2024-03-19 |
|
| 5 |
Robbins Brad |
President, Litepoint Corp. |
52,772 |
2024-01-31 |
|
| 6 |
Gillis Edwin J |
Director |
43,921 |
2023-03-21 |
|
| 7 |
Mehta Sanjay |
VP and Chief Financial Officer |
36,576 |
2025-02-05 |
|
| 8 |
Burns Richard John |
President, Semiconductor Test |
25,191 |
2025-02-05 |
|
| 9 |
Bradley Michael A |
Director |
24,815 |
2021-12-17 |
|
| 10 |
Gray Charles Jeffrey |
VP, General Counsel, Secretary |
24,643 |
2024-01-31 |
|
| 11 |
Matz Marilyn |
Director |
19,173 |
2025-05-13 |
|
| 12 |
Kumar Ujjwal |
President, Teradyne Robotics |
16,369 |
2025-08-05 |
|
| 13 |
Poulin Shannon John |
President, Semiconductor Test |
16,074 |
2026-04-03 |
|
| 14 |
Herweck Peter |
Director |
15,466 |
2026-03-30 |
|
| 15 |
Wood John Francis |
President, System Test Group |
14,328 |
2025-02-04 |
|
| 16 |
Smith Gregory Stephen |
President and CEO |
11,810 |
2026-02-06 |
|
| 17 |
Mills Regan |
President, Product Test |
11,667 |
2026-04-03 |
|
| 18 |
Maddock Ernest E |
Director |
9,597 |
2026-03-17 |
|
| 19 |
Turner Michelle L. |
Chief Financial Officer |
9,156 |
2025-11-05 |
|
| 20 |
Tamer Ford |
Director |
7,235 |
2024-05-13 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-04-06 |
Johnson Mercedes |
Director |
Informative Sell |
625 |
$312.20 |
$195.13K |
| 2026-04-01 |
Poulin Shannon John |
President, Semiconductor Test |
Tax Withholding of RSU |
1,162 |
$312.20 |
$362.78K |
| 2026-04-02 |
Mills Regan |
President, Product Test |
Informative Sell |
252 |
$290.88 |
$73.3K |
| 2026-04-01 |
Mills Regan |
President, Product Test |
Tax Withholding of RSU |
222 |
$312.20 |
$69.31K |
| 2026-03-26 |
Henry Andrew Chisholm |
Director |
RSU Award |
75 |
- |
- |
| 2026-03-26 |
Herweck Peter |
Director |
RSU Award |
92 |
- |
- |
| 2026-03-26 |
Tufano Paul J |
Director |
RSU Award |
159 |
- |
- |
| 2026-03-13 |
Herweck Peter |
Director |
Other (Buy) |
5 |
- |
- |
| 2026-03-13 |
Maddock Ernest E |
Director |
Other (Buy) |
2 |
- |
- |
| 2026-03-13 |
Tufano Paul J |
Director |
Other (Buy) |
25 |
- |
- |
| 2026-03-05 |
Johnson Mercedes |
Director |
Informative Sell |
625 |
$299.20 |
$187K |
| 2026-02-25 |
Mills Regan |
President, Product Test |
Informative Sell |
788 |
$332.87 |
$262.3K |
| 2026-02-04 |
Hathout Jean Pierre |
President, Teradyne Robotics |
RSU Award |
886 |
$269.07 |
$238.4K |
| 2026-02-04 |
Poulin Shannon John |
President, Semiconductor Test |
RSU Award |
3,937 |
$269.07 |
$1.06M |
| 2026-02-04 |
Mills Regan |
President, Product Test |
RSU Award |
886 |
$269.07 |
$238.4K |
| 2026-02-04 |
Smith Gregory Stephen |
President and CEO |
RSU Award |
11,810 |
$269.07 |
$3.18M |
| 2026-02-04 |
Driscoll Ryan |
VP, General Counsel, Secretary |
RSU Award |
1,575 |
$269.07 |
$423.79K |
| 2026-02-05 |
Johnson Mercedes |
Director |
Informative Sell |
625 |
$266.98 |
$166.86K |
| 2026-02-02 |
Hathout Jean Pierre |
President, Teradyne Robotics |
Tax Withholding of RSU |
381 |
$249.53 |
$95.07K |
| 2026-02-02 |
Mills Regan |
President, Product Test |
Tax Withholding of RSU |
345 |
$249.53 |
$86.09K |
| 2026-02-02 |
Smith Gregory Stephen |
President and CEO |
Tax Withholding of RSU |
6,763 |
$249.53 |
$1.69M |
| 2026-02-02 |
Driscoll Ryan |
VP, General Counsel, Secretary |
Tax Withholding of RSU |
414 |
$249.53 |
$103.31K |
| 2026-01-28 |
Mills Regan |
President, Product Test |
Tax Withholding of RSU |
167 |
$250.48 |
$41.83K |
| 2026-01-27 |
Mills Regan |
President, Product Test |
Tax Withholding of RSU |
193 |
$238.94 |
$46.12K |
| 2026-01-28 |
Smith Gregory Stephen |
President and CEO |
Tax Withholding of RSU |
486 |
$250.48 |
$121.73K |