# Teradyne, Inc (TER) insider trading, Q3 2026

Canonical: https://sec-api.dev/insider-trading/ter

> 16 non-derivative transactions: 0 purchases, 10 sales ($6.0M). CIK 97210.

| Date | Insider | Relationship | Code | Shares | Price | Owned after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-09-25 | MADDOCK ERNEST E | Director | J | 2.0 | 0.0 | 10269.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000494/0000904454-26-000494-index.htm |
| 2026-09-25 | TUFANO PAUL J | Director | J | 19.0 | 0.0 | 66008.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000496/0000904454-26-000496-index.htm |
| 2026-09-25 | Herweck Peter | Director | J | 4.0 | 0.0 | 16282.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000498/0000904454-26-000498-index.htm |
| 2026-09-24 | Henry Andrew Chisholm | Director | A | 64.0 | 0.0 | 2991.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000492/0000904454-26-000492-index.htm |
| 2026-09-24 | TUFANO PAUL J | Director | A | 141.0 | 0.0 | 65989.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000496/0000904454-26-000496-index.htm |
| 2026-09-24 | Herweck Peter | Director | A | 77.0 | 0.0 | 16278.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000498/0000904454-26-000498-index.htm |
| 2026-09-17 | MATZ MARILYN | Director | S | 400.0 | 351.11 | 13840.68 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000487/0000904454-26-000487-index.htm |
| 2026-09-15 | MATZ MARILYN | Director | S | 800.0 | 337.83 | 14240.68 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000483/0000904454-26-000483-index.htm |
| 2026-09-15 | Smith Gregory Stephen | Director, Officer | S | 4000.0 | 337.83 | 108495.41 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000485/0000904454-26-000485-index.htm |
| 2026-09-01 | JOHNSON MERCEDES | Director | S | 167.0 | 341.3 | 6364.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000478/0000904454-26-000478-index.htm |
| 2026-08-17 | MATZ MARILYN | Director | S | 1200.0 | 425.0 | 15040.68 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000462/0000904454-26-000462-index.htm |
| 2026-08-17 | Smith Gregory Stephen | Director, Officer | S | 4000.0 | 425.0 | 112495.41 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000464/0000904454-26-000464-index.htm |
| 2026-08-03 | JOHNSON MERCEDES | Director | S | 166.0 | 358.15 | 6531.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000430/0000904454-26-000430-index.htm |
| 2026-07-15 | MATZ MARILYN | Director | S | 1200.0 | 356.31 | 16240.68 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000410/0000904454-26-000410-index.htm |
| 2026-07-15 | Smith Gregory Stephen | Director, Officer | S | 4000.0 | 356.31 | 116495.41 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000412/0000904454-26-000412-index.htm |
| 2026-07-01 | JOHNSON MERCEDES | Director | S | 167.0 | 460.0 | 6697.0 | https://www.sec.gov/Archives/edgar/data/97210/000090445426000390/0000904454-26-000390-index.htm |

Source: https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets

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