Teradyne insider activity
What the executives and directors of Teradyne actually did with their own shares, decoded from their SEC Form 4 filings. Each figure says the stretch of time it covers.
−$14M
net open-market flow, 12 m
0 open-market buys, 12 m
98.2%
of sale value on 10b5-1 plans, 12 m
920 days since an insider bought, whole record
The tape: three years of insider trades
Open-market buy
Discretionary sale
Planned sale (10b5-1)
Reported-price path
Routine
Every marker sits at the price reported on the Form 4. The line is the monthly median of all prices insiders reported, so the chart needs no market feed; the grey strip is the routine flow (grants, vestings, tax withholding and gifts) that a headline gets wrong by counting it as selling.
The 98 routine events on the chart, as a list
| Date | Insider | Shares |
|---|---|---|
| Jun 25, 2026 | TUFANO PAUL J | 116 |
| Jun 25, 2026 | Herweck Peter | 63 |
| Jun 25, 2026 | Henry Andrew Chisholm | 52 |
| Jun 2, 2026 | Hathout Jean Pierre | 441 |
| May 21, 2026 | Poulin Shannon John | 4,374 |
| May 15, 2026 | Smith Gregory Stephen | 4,597 |
| May 8, 2026 | TUFANO PAUL J | 668 |
| May 8, 2026 | JOHNSON MERCEDES | 668 |
| May 8, 2026 | MADDOCK ERNEST E | 668 |
| May 8, 2026 | Sayiner Necip | 668 |
| May 8, 2026 | van Kralingen Bridget A | 668 |
| May 8, 2026 | MATZ MARILYN | 668 |
| May 8, 2026 | Herweck Peter | 668 |
| May 8, 2026 | Henry Andrew Chisholm | 668 |
| Apr 1, 2026 | Mills Regan | 222 |
| Apr 1, 2026 | Poulin Shannon John | 1,162 |
| Mar 26, 2026 | TUFANO PAUL J | 159 |
| Mar 26, 2026 | Herweck Peter | 92 |
| Mar 26, 2026 | Henry Andrew Chisholm | 75 |
| Feb 4, 2026 | Driscoll Ryan | 2,198 |
| Feb 4, 2026 | Smith Gregory Stephen | 20K |
| Feb 4, 2026 | Mills Regan | 1,349 |
| Feb 4, 2026 | Hathout Jean Pierre | 1,385 |
| Feb 4, 2026 | Poulin Shannon John | 4,460 |
| Jan 28, 2026 | Driscoll Ryan | 195 |
| Jan 28, 2026 | Smith Gregory Stephen | 91K |
| Jan 28, 2026 | Mills Regan | 360 |
| Dec 17, 2025 | TUFANO PAUL J | 256 |
| Dec 17, 2025 | Herweck Peter | 148 |
| Nov 5, 2025 | Smith Gregory Stephen | 3,296 |
| Nov 3, 2025 | Turner Michelle L. | 11K |
| Sep 25, 2025 | TUFANO PAUL J | 357 |
| Sep 25, 2025 | Herweck Peter | 206 |
| Aug 1, 2025 | Kumar Ujjwal | 657 |
| Jul 1, 2025 | Sayiner Necip | 2,132 |
| Jul 1, 2025 | Henry Andrew Chisholm | 2,132 |
| Jun 26, 2025 | TUFANO PAUL J | 521 |
| Jun 26, 2025 | Herweck Peter | 302 |
| May 9, 2025 | TUFANO PAUL J | 2,971 |
| May 9, 2025 | JOHNSON MERCEDES | 2,971 |
| May 9, 2025 | MADDOCK ERNEST E | 2,971 |
| May 9, 2025 | van Kralingen Bridget A | 2,971 |
| May 9, 2025 | MATZ MARILYN | 2,971 |
| May 9, 2025 | Herweck Peter | 2,971 |
| Mar 27, 2025 | TUFANO PAUL J | 554 |
| Mar 27, 2025 | Herweck Peter | 320 |
| Feb 3, 2025 | Burns Richard John | 371 |
| Feb 3, 2025 | Driscoll Ryan | 199 |
| Feb 3, 2025 | Smith Gregory Stephen | 3,526 |
| Feb 3, 2025 | Mehta Sanjay | 1,296 |
| Feb 3, 2025 | Kumar Ujjwal | 399 |
| Feb 3, 2025 | Wood John Francis | 191 |
| Feb 3, 2025 | Lukez John | 94 |
| Jan 31, 2025 | Burns Richard John | 9,787 |
| Jan 31, 2025 | Driscoll Ryan | 3,383 |
| Jan 31, 2025 | Smith Gregory Stephen | 35K |
| Jan 31, 2025 | Mehta Sanjay | 20K |
| Jan 31, 2025 | Wood John Francis | 4,717 |
| Jan 31, 2025 | Lukez John | 1,742 |
| Jan 31, 2025 | Kumar Ujjwal | 4,405 |
Where the shares went, last 12 months
Every Form 4 movement decomposed: what flowed in (grants, vested equity, purchases) and what flowed out (tax withholding, plan sales, discretionary sales, gifts). Counted in shares, because grants carry no price.
The chart, in numbers
| Flow | Shares |
|---|---|
| Granted | 99K |
| Vested / exercised | 9,512 |
| Other in | 163 |
| Withheld for tax | 44K |
| Planned sales (10b5-1) | 42K |
| Discretionary sales | 788 |
| Kept | 22K |
Skin in the game
Directly held shares as reported after each trade, indexed to 100 at the start of the window, up to five years back. Direct holdings only: trust and family-entity positions are per-entity in the filings and do not sum honestly, so this chart refuses to guess. The steps are the trades.
The chart, in numbers
| Insider | Start of the window | Latest reported | Indexed, start = 100 |
|---|---|---|---|
| TUFANO PAUL J | 48K | 66K | 138.2 |
| Mehta Sanjay | 25K | 37K | 146.8 |
| Burns Richard John | 12K | 25K | 203 |
| Kumar Ujjwal | 14K | 16K | 119.7 |
Who holds what
the 14 largest holdings of 23| Insider | Role | Shares held | Buys 12 m | Sales 12 m | 12 m | Last trade |
|---|---|---|---|---|---|---|
| Smith Gregory Stephen President and CEO Last trade Sep 15, 2026 | CEO | 108K | – | $9.7M | net selling over the year: 0 months buying, 9 months selling | Sep 15, 2026 |
| TUFANO PAUL J Last trade Nov 4, 2020 | Director | 66K | – | – | Nov 4, 2020 | |
| GUERTIN TIMOTHY E Last trade Nov 3, 2021 | Director | 63K | – | – | Nov 3, 2021 | |
| Robbins Brad President, LitePoint Corp. Last trade Dec 15, 2023 | Officer | 53K | – | – | Dec 15, 2023 | |
| Mehta Sanjay VP and Chief Financial Officer Last trade Feb 4, 2025 | CFO | 37K | – | – | Feb 4, 2025 | |
| Burns Richard John President, Semiconductor Test Last trade Feb 4, 2025 | Officer | 25K | – | – | Feb 4, 2025 | |
| Gray Charles Jeffrey VP, General Counsel, Secretary Last trade Jan 31, 2023 | Officer | 25K | – | – | Jan 31, 2023 | |
| Kumar Ujjwal President, Teradyne Robotics | Officer | 16K | – | – | – | |
| Herweck Peter | Director | 16K | – | – | – | |
| Poulin Shannon John President, Semiconductor Test Last trade May 22, 2026 | Officer | 16K | – | $581K | net selling over the year: 0 months buying, 1 month selling | May 22, 2026 |
| Wood John Francis President, System Test Group | Officer | 14K | – | – | – | |
| MATZ MARILYN Last trade Sep 17, 2026 | Director | 14K | – | $2.3M | net selling over the year: 0 months buying, 5 months selling | Sep 17, 2026 |
| Mills Regan President, Product Test Last trade Apr 8, 2026 | Officer | 11K | – | $341K | net selling over the year: 0 months buying, 2 months selling | Apr 8, 2026 |
| Turner Michelle L. Chief Financial Officer | CFO | 11K | – | – | – |
Open-market trade log
the 60 most recent of 712| Date | Insider | Type | Shares | Price | Value | Since trade | Filed |
|---|---|---|---|---|---|---|---|
| Sep 17, 2026 | MATZ MARILYN (Director) 400 shares $351.11 −2.8% since trade filed Sep 18, 2026 | Planned sale (10b5-1) | 400 | $351.11 | $140K | −2.8% | Sep 18, 2026 |
| Sep 15, 2026 | MATZ MARILYN (Director) 800 shares $337.83 +1.0% since trade filed Sep 16, 2026 | Planned sale (10b5-1) | 800 | $337.83 | $270K | +1.0% | Sep 16, 2026 |
| Sep 15, 2026 | Smith Gregory Stephen (CEO) 4,000 shares $337.83 +1.0% since trade filed Sep 16, 2026 | Planned sale (10b5-1) | 4,000 | $337.83 | $1.4M | +1.0% | Sep 16, 2026 |
| Sep 1, 2026 | JOHNSON MERCEDES (Director) 167 shares $341.30 +0.0% since trade filed Sep 2, 2026 | Planned sale (10b5-1) | 167 | $341.30 | $57K | +0.0% | Sep 2, 2026 |
| Aug 17, 2026 | MATZ MARILYN (Director) 1,200 shares $425.00 −19.7% since trade filed Aug 18, 2026 | Planned sale (10b5-1) | 1,200 | $425.00 | $510K | −19.7% | Aug 18, 2026 |
| Aug 17, 2026 | Smith Gregory Stephen (CEO) 4,000 shares $425.00 −19.7% since trade filed Aug 18, 2026 | Planned sale (10b5-1) | 4,000 | $425.00 | $1.7M | −19.7% | Aug 18, 2026 |
| Aug 3, 2026 | JOHNSON MERCEDES (Director) 166 shares $358.15 −4.7% since trade filed Aug 4, 2026 | Planned sale (10b5-1) | 166 | $358.15 | $59K | −4.7% | Aug 4, 2026 |
| Jul 15, 2026 | MATZ MARILYN (Director) 1,200 shares $356.31 −4.2% since trade filed Jul 16, 2026 | Planned sale (10b5-1) | 1,200 | $356.31 | $428K | −4.2% | Jul 16, 2026 |
| Jul 15, 2026 | Smith Gregory Stephen (CEO) 4,000 shares $356.31 −4.2% since trade filed Jul 16, 2026 | Planned sale (10b5-1) | 4,000 | $356.31 | $1.4M | −4.2% | Jul 16, 2026 |
| Jul 1, 2026 | JOHNSON MERCEDES (Director) 167 shares $460.00 −25.8% since trade filed Jul 2, 2026 | Planned sale (10b5-1) | 167 | $460.00 | $77K | −25.8% | Jul 2, 2026 |
| Jun 15, 2026 | MATZ MARILYN (Director) 1,200 shares $423.03 −19.3% since trade filed Jun 16, 2026 | Planned sale (10b5-1) | 1,200 | $423.03 | $508K | −19.3% | Jun 16, 2026 |
| Jun 15, 2026 | Smith Gregory Stephen (CEO) 4,000 shares $423.03 −19.3% since trade filed Jun 16, 2026 | Planned sale (10b5-1) | 4,000 | $423.03 | $1.7M | −19.3% | Jun 16, 2026 |
| Jun 2, 2026 | JOHNSON MERCEDES (Director) 167 shares $369.74 −7.7% since trade filed Jun 3, 2026 | Planned sale (10b5-1) | 167 | $369.74 | $62K | −7.7% | Jun 3, 2026 |
| May 22, 2026 | Poulin Shannon John (Officer) 656 shares $355.00 −3.9% since trade filed May 26, 2026 | Planned sale (10b5-1) | 656 | $355.00 | $233K | −3.9% | May 26, 2026 |
| May 21, 2026 | MATZ MARILYN (Director) 400 shares $350.00 −2.5% since trade filed May 26, 2026 | Planned sale (10b5-1) | 400 | $350.00 | $140K | −2.5% | May 26, 2026 |
| May 21, 2026 | Poulin Shannon John (Officer) 1,008 shares $345.37 −1.2% since trade filed May 26, 2026 | Planned sale (10b5-1) | 1,008 | $345.37 | $348K | −1.2% | May 26, 2026 |
| May 15, 2026 | MATZ MARILYN (Director) 800 shares $338.98 +0.7% since trade filed May 19, 2026 | Planned sale (10b5-1) | 800 | $338.98 | $271K | +0.7% | May 19, 2026 |
| May 15, 2026 | Smith Gregory Stephen (CEO) 8,597 shares $338.98 +0.7% since trade filed May 19, 2026 | Planned sale (10b5-1) | 8,597 | $338.98 | $2.9M | +0.7% | May 19, 2026 |
| May 7, 2026 | Driscoll Ryan (Officer) 680 shares $377.60 −9.6% since trade filed May 11, 2026 | Planned sale (10b5-1) | 680 | $377.60 | $257K | −9.6% | May 11, 2026 |
| Apr 8, 2026 | Mills Regan (Officer) 16 shares $342.17 −0.3% since trade filed Apr 9, 2026 | Planned sale (10b5-1) | 16 | $342.17 | $5K | −0.3% | Apr 9, 2026 |
| Apr 6, 2026 | JOHNSON MERCEDES (Director) 625 shares $312.20 +9.3% since trade filed Apr 7, 2026 | Planned sale (10b5-1) | 625 | $312.20 | $195K | +9.3% | Apr 7, 2026 |
| Apr 2, 2026 | Mills Regan (Officer) 252 shares $290.88 +17.3% since trade filed Apr 3, 2026 | Planned sale (10b5-1) | 252 | $290.88 | $73K | +17.3% | Apr 3, 2026 |
| Mar 5, 2026 | JOHNSON MERCEDES (Director) 625 shares $299.20 +14.1% since trade filed Mar 6, 2026 | Planned sale (10b5-1) | 625 | $299.20 | $187K | +14.1% | Mar 6, 2026 |
| Feb 25, 2026 | Mills Regan (Officer) 788 shares $332.87 +2.5% since trade filed Feb 27, 2026 | Discretionary sale | 788 | $332.87 | $262K | +2.5% | Feb 27, 2026 |
| Feb 5, 2026 | JOHNSON MERCEDES (Director) 625 shares $266.98 +27.8% since trade filed Feb 6, 2026 | Planned sale (10b5-1) | 625 | $266.98 | $167K | +27.8% | Feb 6, 2026 |
| Jan 5, 2026 | JOHNSON MERCEDES (Director) 625 shares $211.85 +61.1% since trade filed Jan 6, 2026 | Planned sale (10b5-1) | 625 | $211.85 | $132K | +61.1% | Jan 6, 2026 |
| Dec 12, 2025 | Smith Gregory Stephen (CEO) 1,108 shares $201.31 +69.5% since trade filed Dec 15, 2025 | Planned sale (10b5-1) | 1,108 | $201.31 | $223K | +69.5% | Dec 15, 2025 |
| Dec 5, 2025 | JOHNSON MERCEDES (Director) 625 shares $200.00 +70.7% since trade filed Dec 8, 2025 | Planned sale (10b5-1) | 625 | $200.00 | $125K | +70.7% | Dec 8, 2025 |
| Nov 12, 2025 | Smith Gregory Stephen (CEO) 1,108 shares $180.20 +89.4% since trade filed Nov 14, 2025 | Planned sale (10b5-1) | 1,108 | $180.20 | $200K | +89.4% | Nov 14, 2025 |
| Nov 5, 2025 | JOHNSON MERCEDES (Director) 625 shares $177.05 +92.8% since trade filed Nov 7, 2025 | Planned sale (10b5-1) | 625 | $177.05 | $111K | +92.8% | Nov 7, 2025 |
| Oct 10, 2025 | Smith Gregory Stephen (CEO) 1,108 shares $145.24 +135.0% since trade filed Oct 15, 2025 | Planned sale (10b5-1) | 1,108 | $145.24 | $161K | +135.0% | Oct 15, 2025 |
| Oct 6, 2025 | JOHNSON MERCEDES (Director) 625 shares $147.90 +130.8% since trade filed Oct 8, 2025 | Planned sale (10b5-1) | 625 | $147.90 | $92K | +130.8% | Oct 8, 2025 |
| Sep 22, 2025 | Smith Gregory Stephen (CEO) 554 shares $126.39 +170.0% since trade filed Sep 24, 2025 | Planned sale (10b5-1) | 554 | $126.39 | $70K | +170.0% | Sep 24, 2025 |
| Sep 12, 2025 | Smith Gregory Stephen (CEO) 554 shares $115.00 +196.8% since trade filed Sep 16, 2025 | Planned sale (10b5-1) | 554 | $115.00 | $64K | +196.8% | Sep 16, 2025 |
| Sep 5, 2025 | JOHNSON MERCEDES (Director) 625 shares $120.06 +184.3% since trade filed Sep 9, 2025 | Planned sale (10b5-1) | 625 | $120.06 | $75K | +184.3% | Sep 9, 2025 |
| Aug 12, 2025 | Smith Gregory Stephen (CEO) 554 shares $106.00 +222.0% since trade filed Aug 14, 2025 | Planned sale (10b5-1) | 554 | $106.00 | $59K | +222.0% | Aug 14, 2025 |
| Aug 5, 2025 | JOHNSON MERCEDES (Director) 625 shares $106.00 +222.0% since trade filed Aug 7, 2025 | Planned sale (10b5-1) | 625 | $106.00 | $66K | +222.0% | Aug 7, 2025 |
| Jul 30, 2025 | JOHNSON MERCEDES (Director) 1,875 shares $105.73 +222.8% since trade filed Aug 1, 2025 | Planned sale (10b5-1) | 1,875 | $105.73 | $198K | +222.8% | Aug 1, 2025 |
| Jul 30, 2025 | Smith Gregory Stephen (CEO) 554 shares $105.73 +222.8% since trade filed Aug 1, 2025 | Planned sale (10b5-1) | 554 | $105.73 | $59K | +222.8% | Aug 1, 2025 |
| Mar 3, 2025 | JOHNSON MERCEDES (Director) 625 shares $110.96 +207.6% since trade filed Mar 5, 2025 | Planned sale (10b5-1) | 625 | $110.96 | $69K | +207.6% | Mar 5, 2025 |
| Feb 4, 2025 | Burns Richard John (Officer) 445 shares $111.49 +206.1% since trade filed Feb 5, 2025 | Planned sale (10b5-1) | 445 | $111.49 | $50K | +206.1% | Feb 5, 2025 |
| Feb 4, 2025 | Driscoll Ryan (Officer) 216 shares $111.49 +206.1% since trade filed Feb 5, 2025 | Planned sale (10b5-1) | 216 | $111.49 | $24K | +206.1% | Feb 5, 2025 |
| Feb 4, 2025 | Mehta Sanjay (CFO) 1,384 shares $111.49 +206.1% since trade filed Feb 5, 2025 | Planned sale (10b5-1) | 1,384 | $111.49 | $154K | +206.1% | Feb 5, 2025 |
| Feb 3, 2025 | JOHNSON MERCEDES (Director) 625 shares $112.58 +203.2% since trade filed Feb 4, 2025 | Planned sale (10b5-1) | 625 | $112.58 | $70K | +203.2% | Feb 4, 2025 |
| Jan 30, 2025 | Driscoll Ryan (Officer) 437 shares $102.00 +234.6% since trade filed Jan 31, 2025 | Planned sale (10b5-1) | 437 | $102.00 | $45K | +234.6% | Jan 31, 2025 |
| Jan 30, 2025 | Mehta Sanjay (CFO) 614 shares $102.00 +234.6% since trade filed Jan 31, 2025 | Planned sale (10b5-1) | 614 | $102.00 | $63K | +234.6% | Jan 31, 2025 |
| Jan 29, 2025 | Burns Richard John (Officer) 1,477 shares $122.90 +177.7% since trade filed Jan 30, 2025 | Planned sale (10b5-1) | 1,477 | $122.90 | $182K | +177.7% | Jan 30, 2025 |
| Jan 29, 2025 | Driscoll Ryan (Officer) 76 shares $122.90 +177.7% since trade filed Jan 30, 2025 | Planned sale (10b5-1) | 76 | $122.90 | $9K | +177.7% | Jan 30, 2025 |
| Jan 29, 2025 | Mehta Sanjay (CFO) 5,338 shares $122.90 +177.7% since trade filed Jan 30, 2025 | Planned sale (10b5-1) | 5,338 | $122.90 | $656K | +177.7% | Jan 30, 2025 |
| Jan 28, 2025 | Burns Richard John (Officer) 407 shares $120.51 +183.2% since trade filed Jan 30, 2025 | Planned sale (10b5-1) | 407 | $120.51 | $49K | +183.2% | Jan 30, 2025 |
| Jan 28, 2025 | Driscoll Ryan (Officer) 107 shares $120.51 +183.2% since trade filed Jan 29, 2025 | Planned sale (10b5-1) | 107 | $120.51 | $13K | +183.2% | Jan 29, 2025 |
| Jan 28, 2025 | Mehta Sanjay (CFO) 1,789 shares $120.51 +183.2% since trade filed Jan 29, 2025 | Planned sale (10b5-1) | 1,789 | $120.51 | $216K | +183.2% | Jan 29, 2025 |
| Jan 3, 2025 | Smith Gregory Stephen (CEO) 3,080 shares $130.00 +162.5% since trade filed Jan 7, 2025 | Planned sale (10b5-1) | 3,080 | $130.00 | $400K | +162.5% | Jan 7, 2025 |
| Jan 2, 2025 | JOHNSON MERCEDES (Director) 625 shares $126.76 +169.3% since trade filed Jan 6, 2025 | Planned sale (10b5-1) | 625 | $126.76 | $79K | +169.3% | Jan 6, 2025 |
| Dec 16, 2024 | Smith Gregory Stephen (CEO) 3,080 shares $130.00 +162.5% since trade filed Dec 18, 2024 | Planned sale (10b5-1) | 3,080 | $130.00 | $400K | +162.5% | Dec 18, 2024 |
| Dec 2, 2024 | JOHNSON MERCEDES (Director) 625 shares $110.04 +210.2% since trade filed Dec 4, 2024 | Planned sale (10b5-1) | 625 | $110.04 | $69K | +210.2% | Dec 4, 2024 |
| Nov 7, 2024 | JOHNSON MERCEDES (Director) 625 shares $111.42 +206.3% since trade filed Nov 12, 2024 | Planned sale (10b5-1) | 625 | $111.42 | $70K | +206.3% | Nov 12, 2024 |
| Oct 2, 2024 | Burns Richard John (Officer) 191 shares $129.68 +163.2% since trade filed Oct 3, 2024 | Planned sale (10b5-1) | 191 | $129.68 | $25K | +163.2% | Oct 3, 2024 |
| Oct 1, 2024 | JOHNSON MERCEDES (Director) 625 shares $132.80 +157.0% since trade filed Oct 3, 2024 | Planned sale (10b5-1) | 625 | $132.80 | $83K | +157.0% | Oct 3, 2024 |
| Oct 1, 2024 | Burns Richard John (Officer) 789 shares $132.80 +157.0% since trade filed Oct 3, 2024 | Planned sale (10b5-1) | 789 | $132.80 | $105K | +157.0% | Oct 3, 2024 |
“Since trade” compares with the latest insider-implied price, not a market quote: these pages are built from filings alone. A role here is the one on that day's Form 4, so somebody promoted since appears under both titles.
Filing hygiene
210 Forms 4, 3 years
0 filed late
1 amendments
1.9 avg. days to file
How to read this
A Form 4 transaction code decides everything. P is an open-market purchase and S an open-market sale; those two are the only codes where an insider chose to trade. A is a grant, M an option exercise or vesting, F shares withheld to cover tax, G a gift. Most “insiders dumped billions” headlines are code F and M mechanics.
Sales flagged 10b5-1 run on a plan the insider adopted in advance; since 2023 every Form 4 carries that flag. Buys have historically predicted returns, sales mostly have not, and this page states filings, not advice.