Marilyn Matz insider trades: Teradyne (TER) stock buys and sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Marilyn reports to the SEC
Open-market buys and sales
16 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Oct 21, 2026 | TER | ↓ Sell | 400 | $350.00 | $140K | Direct | Oct 22, 2026 (1d) |
| Oct 15, 2026 | TER | ↓ Sell | 800 | $341.28 | $273K | Direct | Oct 19, 2026 (4d) |
| Sep 17, 2026 | TER | ↓ Sell | 400 | $351.11 | $140K | Direct | Sep 18, 2026 (1d) |
| Sep 15, 2026 | TER | ↓ Sell | 800 | $337.83 | $270K | Direct | Sep 16, 2026 (1d) |
| Aug 17, 2026 | TER | ↓ Sell | 1,200 | $425.00 | $510K | Direct | Aug 18, 2026 (1d) |
| Jul 15, 2026 | TER | ↓ Sell | 1,200 | $356.31 | $428K | Direct | Jul 16, 2026 (1d) |
| Jun 15, 2026 | TER | ↓ Sell | 1,200 | $423.03 | $508K | Direct | Jun 16, 2026 (1d) |
| May 21, 2026 | TER | ↓ Sell | 400 | $350.00 | $140K | Direct | May 26, 2026 (5d) |
| May 15, 2026 | TER | ↓ Sell | 800 | $338.98 | $271K | Direct | May 19, 2026 (4d) |
| Mar 15, 2024 | TER | ↑ Buy | 13 | $106.04 | $1K | Direct | Mar 19, 2024 (4d) |
| Jan 3, 2022 | TER | ↓ Sell | 4,349 | $164.86 | $717K | Direct | Jan 4, 2022 (1d) |
| Sep 10, 2021 | TER | ↓ Sell | 4,157 | $120.18 | $500K | Direct | Sep 13, 2021 (3d) |
| Jul 26, 2019 | TER | ↓ Sell | 500 | $57.00 | $29K | Direct | Jul 29, 2019 (3d) |
| Aug 10, 2016 | LOGM | ↓ Sell | 500 | $83.20 | $42K | Direct | Aug 12, 2016 (2d) |
| Dec 1, 2015 | LOGM | ↓ Sell | 500 | $71.65 | $36K | Direct | Dec 2, 2015 (1d) |
| Sep 11, 2015 | LOGM | ↓ Sell | 2,300 | $62.18 | $143K | Direct | Sep 11, 2015 (0d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other TER insiders
Open-market trades in the last 12 months
About Marilyn Matz's insider trades
Marilyn Matz is a director at Teradyne (TER). Since Sep 11, 2015, Marilyn has reported 1 open-market purchase worth $1K and 15 sales worth $4.1M on SEC Form 4. In the last 12 months: 9 sales ($2.7M).
Their filings also include grants and awards (12 filings), option exercises (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every TER insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.