🕵️ Teradyne, Inc ($TER)
SEC insider & ownership activity, last 12 months · CIK 97210 · every row links its SEC filing
Over the last 12 months insiders sold $14.3M with no open-market buying against it. Smith Gregory Stephen sold $9.7M through a 10b5-1 trading plan in 9 lots (Sep–Sep). No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 6 sellers, $14.3M (32 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Smith Gregory Stephen | 0 | – | 9 | $9.7M | Sep 15, 2026 |
| Matz Marilyn | 0 | – | 6 | $2.1M | Sep 15, 2026 |
| Johnson Mercedes | 0 | – | 11 | $1.3M | Sep 1, 2026 |
| Poulin Shannon John | 0 | – | 2 | $581K | May 22, 2026 |
| Mills Regan | 0 | – | 3 | $341K | Apr 8, 2026 |
| Driscoll Ryan | 0 | – | 1 | $257K | May 7, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 11.1% | 13G | Jul 30, 2026 | filing ↗ | |
| Vanguard Capital Management | 7.5% | 13G | Apr 29, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.5% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Matz Marilyn | $270K | Sep 15, 2026 | filing ↗ |
| Smith Gregory Stephen | $1.4M | Sep 15, 2026 | filing ↗ |
| Johnson Mercedes | $57K | Sep 1, 2026 | filing ↗ |
| Matz Marilyn | $510K | Aug 17, 2026 | filing ↗ |
| Smith Gregory Stephen | $1.7M | Aug 17, 2026 | filing ↗ |
| Johnson Mercedes | $59K | Aug 3, 2026 | filing ↗ |
| Matz Marilyn | $428K | Jul 15, 2026 | filing ↗ |
| Smith Gregory Stephen | $1.4M | Jul 15, 2026 | filing ↗ |
| Johnson Mercedes | $77K | Jul 1, 2026 | filing ↗ |
| Matz Marilyn | $508K | Jun 15, 2026 | filing ↗ |
| Smith Gregory Stephen | $1.7M | Jun 15, 2026 | filing ↗ |
| Johnson Mercedes | $62K | Jun 2, 2026 | filing ↗ |
| Poulin Shannon John | $233K | May 22, 2026 | filing ↗ |
| Matz Marilyn | $140K | May 21, 2026 | filing ↗ |
| Poulin Shannon John | $348K | May 21, 2026 | filing ↗ |
| Matz Marilyn | $271K | May 15, 2026 | filing ↗ |
| Smith Gregory Stephen | $2.9M | May 15, 2026 | filing ↗ |
| Driscoll Ryan | $257K | May 7, 2026 | filing ↗ |
| Mills Regan | $5K | Apr 8, 2026 | filing ↗ |
| Johnson Mercedes | $195K | Apr 6, 2026 | filing ↗ |
| Mills Regan | $73K | Apr 2, 2026 | filing ↗ |
| Johnson Mercedes | $187K | Mar 5, 2026 | filing ↗ |
| Mills Regan | $262K | Feb 25, 2026 | filing ↗ |
| Johnson Mercedes | $167K | Feb 5, 2026 | filing ↗ |
| Johnson Mercedes | $132K | Jan 5, 2026 | filing ↗ |
| Smith Gregory Stephen | $223K | Dec 12, 2025 | filing ↗ |
| Johnson Mercedes | $125K | Dec 5, 2025 | filing ↗ |
| Smith Gregory Stephen | $200K | Nov 12, 2025 | filing ↗ |
| Kumar Ujjwal | $729K | Nov 5, 2025 | filing ↗ |
| Mehta Sanjay | $1.1M | Nov 5, 2025 | filing ↗ |
| Johnson Mercedes | $111K | Nov 5, 2025 | filing ↗ |
| Mehta Sanjay | $1.1M | Nov 4, 2025 | filing ↗ |
| Kumar Ujjwal | $57 | Nov 3, 2025 | filing ↗ |
| Kumar Ujjwal | $429K | Oct 27, 2025 | filing ↗ |
| Smith Gregory Stephen | $161K | Oct 10, 2025 | filing ↗ |
| Johnson Mercedes | $92K | Oct 6, 2025 | filing ↗ |
| Smith Gregory Stephen | $70K | Sep 22, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Material agreement (1.01) | Aug 7, 2026 | filing ↗ |
| New financial obligation (2.03) | Aug 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 7, 2026 | filing ↗ |
| Earnings (2.02) | Jul 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 28, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 8, 2026 | filing ↗ |
| Earnings (2.02) | Apr 28, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 28, 2026 | filing ↗ |
| Earnings (2.02) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Earnings (2.02) | Oct 28, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 28, 2025 | filing ↗ |
| Officer/director changes (5.02) | Oct 28, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Oct 28, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 28, 2025 | filing ↗ |