As of September 09, 2026, Teradyne's top three insider holders are Mark E Jagiela (Ceo, 208.60K shares), Gregory Stephen Smith (President And Ceo, 112.50K shares), Paul J Tufano (Director, 65.85K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Mark E Jagiela | Ceo | 208,600 | 0 | 208,600 | 24.4% | 31 Jan, 2023 |
| 2 | Gregory Stephen Smith | President And Ceo | 112,495 | 0 | 112,495 | 13.2% | 18 Aug, 2026 |
| 3 | Paul J Tufano | Director | 65,848 | 0 | 65,848 | 7.7% | 29 Jun, 2026 |
| 4 | Timothy E Guertin | Director | 62,729 | 0 | 62,729 | 7.3% | 19 Mar, 2024 |
| 5 | Brad Robbins | President, Litepoint Corp. | 52,772 | 0 | 52,772 | 6.2% | 31 Jan, 2024 |
| 6 | Edwin J Gillis | Director | 43,921 | 0 | 43,921 | 5.1% | 21 Mar, 2023 |
| 7 | Walter G. Vahey | Exec. Vp, Corp. Development | 41,570 | 0 | 41,570 | 4.9% | 01 Feb, 2022 |
| 8 | Sanjay Mehta | Vp And Chief Financial Officer | 36,576 | 0 | 36,576 | 4.3% | 05 Feb, 2025 |
| 9 | Richard John Burns | President, Semiconductor Test | 25,191 | 0 | 25,191 | 2.9% | 05 Feb, 2025 |
| 10 | Michael A Bradley | Ceo | 24,815 | 0 | 24,815 | 2.9% | 17 Dec, 2021 |
| 11 | Charles Jeffrey Gray | Vp, General Counsel, Secretary | 24,643 | 0 | 24,643 | 2.9% | 31 Jan, 2024 |
| 12 | Ujjwal Kumar | President, Teradyne Robotics | 16,369 | 0 | 16,369 | 1.9% | 05 Aug, 2025 |
| 13 | Peter Herweck | Director | 16,201 | 0 | 16,201 | 1.9% | 29 Jun, 2026 |
| 14 | Shannon John Poulin | President, Semiconductor Test | 15,722 | 0 | 15,722 | 1.8% | 26 May, 2026 |
| 15 | Marilyn Matz | Director | 15,041 | 0 | 15,041 | 1.8% | 18 Aug, 2026 |
| 16 | John Francis Wood | President, System Test Group | 14,137 | 0 | 14,137 | 1.7% | 04 Feb, 2025 |
| 17 | Regan Mills | President, Product Test | 11,399 | 0 | 11,399 | 1.3% | 09 Apr, 2026 |
| 18 | Michelle L. Turner | Chief Financial Officer | 11,260 | 0 | 11,260 | 1.3% | 05 Nov, 2025 |
| 19 | Jean Pierre Hathout | President, Teradyne Robotics | 9,733 | 0 | 9,733 | 1.1% | 03 Jun, 2026 |
| 20 | Ernest E Maddock | Director | 9,597 | 0 | 9,597 | 1.1% | 17 Mar, 2026 |
| 21 | Ryan Driscoll | Vp, General Counsel, Secretary | 7,665 | 0 | 7,665 | 0.9% | 11 May, 2026 |
| 22 | Mercedes Johnson | Director | 6,531 | 0 | 6,531 | 0.8% | 04 Aug, 2026 |
| 23 | Kralingen Bridget A Van | Director | 6,224 | 0 | 6,224 | 0.7% | 12 May, 2026 |
| 24 | Ford Tamer | Director | 5,359 | 0 | 5,359 | 0.6% | 16 May, 2023 |
| 25 | John Lukez | President, Litepoint Corp. | 4,185 | 0 | 4,185 | 0.5% | 04 Feb, 2025 |
| 26 | Andrew Chisholm Henry | Director | 2,927 | 0 | 2,927 | 0.3% | 29 Jun, 2026 |
| 27 | Necip Sayiner | Director | 2,800 | 0 | 2,800 | 0.3% | 12 May, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 17 Aug, 2026 | Marilyn Matz | Director | Disposed S | 1,200 | $425.00 | $510.00K | 15,041 | Direct |
| 17 Aug, 2026 | Gregory Stephen Smith | President And Ceo | Disposed S | 4,000 | $425.00 | $1.70Mn | 112,495 | Direct |
| 03 Aug, 2026 | Mercedes Johnson | Director | Disposed S | 166 | $358.15 | $59.45K | 6,531 | Direct |
| 15 Jul, 2026 | Marilyn Matz | Director | Disposed S | 1,200 | $356.31 | $427.57K | 16,241 | Direct |
| 15 Jul, 2026 | Gregory Stephen Smith | President And Ceo | Disposed S | 4,000 | $356.31 | $1.43Mn | 116,495 | Direct |
| 01 Jul, 2026 | Mercedes Johnson | Director | Disposed S | 167 | $460.00 | $76.82K | 6,697 | Direct |
| 25 Jun, 2026 | Andrew Chisholm Henry | Director | Acquired A | 52 | $0.00 | $0 | 2,927 | Direct |
| 25 Jun, 2026 | Paul J Tufano | Director | Acquired A | 116 | $0.00 | $0 | 65,848 | Direct |
| 25 Jun, 2026 | Peter Herweck | Director | Acquired A | 63 | $0.00 | $0 | 16,201 | Direct |
| 15 Jun, 2026 | Marilyn Matz | Director | Disposed S | 1,200 | $423.03 | $507.64K | 17,441 | Direct |
| 12 Jun, 2026 | Paul J Tufano | Director | Acquired J | 19 | $0.00 | $0 | 65,732 | Direct |
| 12 Jun, 2026 | Peter Herweck | Director | Acquired J | 4 | $0.00 | $0 | 16,138 | Direct |
| 15 Jun, 2026 | Gregory Stephen Smith | President And Ceo | Disposed S | 4,000 | $423.03 | $1.69Mn | 120,470 | Direct |
| 01 Jun, 2026 | Jean Pierre Hathout | President, Teradyne Robotics | Disposed F | 267 | $369.47 | $98.65K | 9,907 | Direct |
| 02 Jun, 2026 | Jean Pierre Hathout | President, Teradyne Robotics | Disposed F | 174 | $392.62 | $68.32K | 9,733 | Direct |
| 21 May, 2026 | Shannon John Poulin | President, Semiconductor Test | Disposed S | 1,008 | $345.37 | $348.13K | 15,066 | Direct |
| 21 May, 2026 | Marilyn Matz | Director | Disposed S | 400 | $350.00 | $140.00K | 18,641 | Direct |
| 21 May, 2026 | Shannon John Poulin | President, Semiconductor Test | Acquired M | 2,843 | $82.61 | $234.86K | 17,909 | Direct |
| 21 May, 2026 | Shannon John Poulin | President, Semiconductor Test | Disposed F | 1,531 | $345.98 | $529.70K | 16,378 | Direct |
| 22 May, 2026 | Shannon John Poulin | President, Semiconductor Test | Disposed S | 656 | $355.00 | $232.88K | 15,722 | Direct |