List of insiders holdings for TERADYNE INC: 
 - Shares directly owned by the insider.
 - Shares indirectly owned by the insider.
 - Total shares owned by the insider (sum of shares directly and indirectly owned).
 - Total market value if available.
 - Shares are not adjusted for stock split.
 
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
 - Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time  | Shares Owned Directly Indirectly  | Total Shares Owned  | Filing | 
| 1 | CHAMILLARD GEORGE W Director  | 2007-01-03 10:10:20 | 256,226 0  | 256,226 | Form 4 | 
| 2 | JAGIELA MARK E CEO  | 2023-01-31 17:08:54 | 208,600 0  | 208,600 | Form 4 | 
| 3 | BAGLEY JAMES W Director  | 2013-05-23 18:05:48 | 144,028 0  | 144,028 | Form 4 | 
| 4 | Smith Gregory Stephen President and CEO  | 2025-10-15 09:54:36 | 94,777 0  | 94,777 | Form 4 | 
| 5 | ROGAS EDWARD JR Senior Vice President  | 2006-01-03 17:14:14 | 92,196 0  | 92,196 | Form 4 | 
| 6 | WOLPERT PATRICIA S Director  | 2010-05-28 11:29:43 | 77,459 0  | 77,459 | Form 4 | 
| 7 | CARNESALE ALBERT Director  | 2013-05-23 18:15:40 | 76,648 0  | 76,648 | Form 4 | 
| 8 | MULRONEY JOHN P Director  | 2004-02-03 11:14:21 | 66,750 0  | 66,750 | Form 4 | 
| 9 | TUFANO PAUL J Director  | 2025-10-01 16:20:54 | 64,618 0  | 64,618 | Form 4 | 
| 10 | Beecher Gregory R VP and CFO  | 2019-04-29 21:22:45 | 63,634 0  | 63,634 | Form 4 | 
| 11 | GUERTIN TIMOTHY E Director  | 2024-03-19 17:08:51 | 62,798 0  | 62,798 | Form 4 | 
| 12 | CASEY JOHN M Senior Vice President  | 2006-01-03 17:10:49 | 54,779 0  | 54,779 | Form 4 | 
| 13 | Robbins Brad President, LitePoint Corp.  | 2024-01-31 17:39:36 | 52,772 0  | 52,772 | Form 4 | 
| 14 | HOTCHKISS JEFFREY R President, SystemsTestDivision  | 2012-03-20 12:19:46 | 52,103 0  | 52,103 | Form 4 | 
| 15 | GILLIS EDWIN J Director  | 2023-03-21 17:49:37 | 43,939 0  | 43,939 | Form 4 | 
| 16 | Vahey Walter G. Exec. VP, Corp. Development  | 2022-02-01 16:58:24 | 43,237 0  | 43,237 | Form 4 | 
| 17 | Tempesta Daniel David Principal Accounting Officer  | 2008-01-29 16:31:46 | 37,089 0  | 37,089 | Form 4 | 
| 18 | Mehta Sanjay VP and Chief Financial Officer  | 2025-02-05 14:06:16 | 36,576 0  | 36,576 | Form 4 | 
| 19 | MACDONALD G RICHARD Corporate Controller  | 2005-01-04 15:14:21 | 35,493 0  | 35,493 | Form 4 | 
| 20 | CASAL EILEEN VP,GeneralCounsel&Secretary  | 2009-06-09 12:31:41 | 34,102 0  | 34,102 | Form 4/A | 
| 21 | CHRISTMAN DANIEL W Director  | 2017-05-11 17:35:28 | 31,862 0  | 31,862 | Form 4 | 
| 22 | Burns Richard John President, Semiconductor Test  | 2025-02-05 14:02:01 | 25,191 0  | 25,191 | Form 4 | 
| 23 | BRADLEY MICHAEL A Director  | 2021-12-17 16:28:28 | 24,815 0  | 24,815 | Form 4 | 
| 24 | Gray Charles Jeffrey VP, General Counsel, Secretary  | 2024-01-31 18:03:52 | 24,643 0  | 24,643 | Form 4 | 
| 25 | O REILLY VINCENT M Director  | 2010-05-28 11:10:11 | 24,192 0  | 24,192 | Form 4 | 
| 26 | Poulin Shannon John President, Semiconductor Test  | 2025-05-13 18:02:07 | 24,086 0  | 24,086 | Form 3 | 
| 27 | SCHNEIDER RICHARD E President, Connection Systems  | 2005-06-30 18:07:04 | 21,942 0  | 21,942 | Form 4 | 
| 28 | MATZ MARILYN Director  | 2025-05-13 16:42:19 | 19,173 0  | 19,173 | Form 4 | 
| 29 | Tamer Ford Director  | 2024-05-13 18:10:52 | 7,235 9,886  | 17,121 | Form 4 | 
| 30 | Kumar Ujjwal President, Teradyne Robotics  | 2025-08-05 16:38:44 | 16,369 0  | 16,369 | Form 4 | 
| 31 | Herweck Peter Director  | 2025-10-01 16:16:42 | 15,223 0  | 15,223 | Form 4 | 
| 32 | Wood John Francis President, System Test Group  | 2025-02-04 18:00:57 | 14,137 0  | 14,137 | Form 4 | 
| 33 | Mills Regan President, Product Test  | 2025-05-13 17:41:09 | 12,215 0  | 12,215 | Form 3 | 
| 34 | JOHNSON MERCEDES Director  | 2025-10-08 11:05:12 | 10,113 1,876  | 11,989 | Form 4 | 
| 35 | MADDOCK ERNEST E Director  | 2025-10-01 16:24:36 | 9,596 0  | 9,596 | Form 4 | 
| 36 | Hathout Jean Pierre President, Teradyne Robotics  | 2025-09-10 16:35:26 | 9,551 0  | 9,551 | Form 3 | 
| 37 | Driscoll Ryan VP, General Counsel, Secretary  | 2025-02-05 13:56:42 | 7,007 0  | 7,007 | Form 4 | 
| 38 | van Kralingen Bridget A Director  | 2025-05-13 18:42:21 | 5,556 0  | 5,556 | Form 4 | 
| 39 | Lukez John President, LitePoint Corp.  | 2025-02-04 18:39:36 | 5,305 0  | 5,305 | Form 4 | 
| 40 | McAndrews Amy R Former Corporate Controller  | 2007-01-03 14:03:08 | 4,888 0  | 4,888 | Form 4 | 
| 41 | VALLEE ROY Director  | 2020-11-13 16:57:30 | 3,073 0  | 3,073 | Form 4 | 
| 42 | Henry Andrew Chisholm Director  | 2025-07-03 10:16:44 | 2,132 0  | 2,132 | Form 4 | 
| 43 | Sayiner Necip Director  | 2025-07-03 11:38:03 | 2,132 0  | 2,132 | Form 4 | 
| 44 | Turner Michelle L. Chief Financial Officer  | 2025-11-03 13:03:35 | 116 0  | 116 | Form 3 |