Smith Gregory Stephen
- Shares
- 120.47K
- % company
- 0.08%
- Price
- $423.03
- Value
- $50,962,424
Filed Jun 15, 2026
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NASDAQ · TECHNOLOGY · Holders
Teradyne Inc (TER) Institutional Ownership & Insider Trading History
Recent insider purchases and sales for TER from Form 4 filings. Institutional holdings surface here when ownership sources publish.
Section freshness
Price Jun 23, 4:00 PM EDT · Statements Mar 30, 8:00 PM EDT
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Data freshness
Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.
Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.
PriceLive
Last traded •
Source: Market data provider
Fundamentalsevery 1 day
Provider checked •
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Analystevery 1 day
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Latest item •
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Ownership read
TER insider sentiment: Net selling.
29 sales and 0 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
TER
Purchases—
Sales1.14M
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
—
Institutional data pending
Insider stance
Net selling
$250.88M sold / — bought
Latest filing
Jun 15, 2026
Most recent holder or insider filing date
Filings shown
96
0 holder / 96 insider
- Holder rows
- Pending
- Market data source
- Latest filing
- Jun 15, 2026
- Most recent holder or insider filing date
- Increased / initiated
- Pending
- 0 decreased
- Insider rows
- 96
- Market data source
Recent insider transactions
Teradyne Inc (TER) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
MATZ MARILYN
- Shares
- 17.44K
- % company
- 0.01%
- Price
- $423.03
- Value
- $7,378,066
Filed Jun 15, 2026
Herweck Peter
- Shares
- 16.14K
- % company
- 0.01%
- Price
- Not reported
- Value
- Not reported
Filed Jun 12, 2026
MADDOCK ERNEST E
- Shares
- 10.27K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Jun 12, 2026
TUFANO PAUL J
- Shares
- 65.73K
- % company
- 0.04%
- Price
- Not reported
- Value
- Not reported
Filed Jun 12, 2026
Hathout Jean Pierre
- Shares
- 9.73K
- % company
- <0.01%
- Price
- $392.62
- Value
- $3,821,370
Filed Jun 2, 2026
JOHNSON MERCEDES
- Shares
- 6.86K
- % company
- <0.01%
- Price
- $369.74
- Value
- $2,537,895
Filed Jun 2, 2026
Hathout Jean Pierre
- Shares
- 9.91K
- % company
- <0.01%
- Price
- $369.47
- Value
- $3,660,339
Filed Jun 1, 2026
Poulin Shannon John
- Shares
- 15.72K
- % company
- 0.01%
- Price
- $355.00
- Value
- $5,581,310
Filed May 22, 2026
Poulin Shannon John
- Shares
- 8.53K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 21, 2026
Poulin Shannon John
- Shares
- 16.38K
- % company
- 0.01%
- Price
- $345.98
- Value
- $5,666,460
Filed May 21, 2026
Poulin Shannon John
- Shares
- 17.91K
- % company
- 0.01%
- Price
- $82.61
- Value
- $1,479,462
Filed May 21, 2026
Poulin Shannon John
- Shares
- 15.07K
- % company
- <0.01%
- Price
- $345.37
- Value
- $5,203,344
Filed May 21, 2026
MATZ MARILYN
- Shares
- 18.64K
- % company
- 0.01%
- Price
- $350.00
- Value
- $6,524,350
Filed May 21, 2026
Smith Gregory Stephen
- Shares
- —
- % company
- —
- Price
- No cash value
- Value
- No cash value
Filed May 15, 2026
Smith Gregory Stephen
- Shares
- 124.47K
- % company
- 0.08%
- Price
- $338.98
- Value
- $42,192,841
Filed May 15, 2026
Smith Gregory Stephen
- Shares
- 133.07K
- % company
- 0.09%
- Price
- $72.10
- Value
- $9,594,131
Filed May 15, 2026
MATZ MARILYN
- Shares
- 19.04K
- % company
- 0.01%
- Price
- $338.98
- Value
- $6,454,518
Filed May 15, 2026
Henry Andrew Chisholm
- Shares
- 2.88K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
Herweck Peter
- Shares
- 16.13K
- % company
- 0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
MATZ MARILYN
- Shares
- 19.84K
- % company
- 0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
van Kralingen Bridget A
- Shares
- 6.22K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
Sayiner Necip
- Shares
- 2.80K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
MADDOCK ERNEST E
- Shares
- 10.27K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
JOHNSON MERCEDES
- Shares
- 7.03K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
TUFANO PAUL J
- Shares
- 65.71K
- % company
- 0.04%
- Price
- No cash value
- Value
- No cash value
Filed May 8, 2026
Driscoll Ryan
- Shares
- 7.67K
- % company
- <0.01%
- Price
- $377.60
- Value
- $2,894,304
Filed May 7, 2026
Mills Regan
- Shares
- 11.40K
- % company
- <0.01%
- Price
- $342.17
- Value
- $3,900,396
Filed Apr 8, 2026
JOHNSON MERCEDES
- Shares
- 6.36K
- % company
- <0.01%
- Price
- $312.20
- Value
- $1,986,529
Filed Apr 6, 2026
Mills Regan
- Shares
- 11.41K
- % company
- <0.01%
- Price
- $290.88
- Value
- $3,320,395
Filed Apr 2, 2026
Poulin Shannon John
- Shares
- 16.07K
- % company
- 0.01%
- Price
- $312.20
- Value
- $5,018,303
Filed Apr 1, 2026
Mills Regan
- Shares
- 11.67K
- % company
- <0.01%
- Price
- $312.20
- Value
- $3,642,437
Filed Apr 1, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | Smith Gregory Stephen | 0.08% | SaleOpen-market or direct sale reported on Form 4. | 120.47K | $423.03 | $50,962,424 | Jun 15, 2026 |
| 2 | MATZ MARILYN | 0.01% | SaleOpen-market or direct sale reported on Form 4. | 17.44K | $423.03 | $7,378,066 | Jun 15, 2026 |
| 3 | Herweck Peter | 0.01% | JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 16.14K | Not reported | Not reported | Jun 12, 2026 |
| 4 | MADDOCK ERNEST E | <0.01% | JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 10.27K | Not reported | Not reported | Jun 12, 2026 |
| 5 | TUFANO PAUL J | 0.04% | JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 65.73K | Not reported | Not reported | Jun 12, 2026 |
| 6 | Hathout Jean Pierre | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 9.73K | $392.62 | $3,821,370 | Jun 2, 2026 |
| 7 | JOHNSON MERCEDES | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 6.86K | $369.74 | $2,537,895 | Jun 2, 2026 |
| 8 | Hathout Jean Pierre | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 9.91K | $369.47 | $3,660,339 | Jun 1, 2026 |
| 9 | Poulin Shannon John | 0.01% | SaleOpen-market or direct sale reported on Form 4. | 15.72K | $355.00 | $5,581,310 | May 22, 2026 |
| 10 | Poulin Shannon John | <0.01% | Option exerciseDerivative exercise or conversion before any separate sale row. | 8.53K | No cash value | No cash value | May 21, 2026 |
| 11 | Poulin Shannon John | 0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 16.38K | $345.98 | $5,666,460 | May 21, 2026 |
| 12 | Poulin Shannon John | 0.01% | Option exerciseDerivative exercise or conversion before any separate sale row. | 17.91K | $82.61 | $1,479,462 | May 21, 2026 |
| 13 | Poulin Shannon John | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 15.07K | $345.37 | $5,203,344 | May 21, 2026 |
| 14 | MATZ MARILYN | 0.01% | SaleOpen-market or direct sale reported on Form 4. | 18.64K | $350.00 | $6,524,350 | May 21, 2026 |
| 15 | Smith Gregory Stephen | — | Option exerciseDerivative exercise or conversion before any separate sale row. | — | No cash value | No cash value | May 15, 2026 |
| 16 | Smith Gregory Stephen | 0.08% | SaleOpen-market or direct sale reported on Form 4. | 124.47K | $338.98 | $42,192,841 | May 15, 2026 |
| 17 | Smith Gregory Stephen | 0.09% | Option exerciseDerivative exercise or conversion before any separate sale row. | 133.07K | $72.10 | $9,594,131 | May 15, 2026 |
| 18 | MATZ MARILYN | 0.01% | SaleOpen-market or direct sale reported on Form 4. | 19.04K | $338.98 | $6,454,518 | May 15, 2026 |
| 19 | Henry Andrew Chisholm | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 2.88K | No cash value | No cash value | May 8, 2026 |
| 20 | Herweck Peter | 0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 16.13K | No cash value | No cash value | May 8, 2026 |
| 21 | MATZ MARILYN | 0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 19.84K | No cash value | No cash value | May 8, 2026 |
| 22 | van Kralingen Bridget A | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 6.22K | No cash value | No cash value | May 8, 2026 |
| 23 | Sayiner Necip | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 2.80K | No cash value | No cash value | May 8, 2026 |
| 24 | MADDOCK ERNEST E | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 10.27K | No cash value | No cash value | May 8, 2026 |
| 25 | JOHNSON MERCEDES | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 7.03K | No cash value | No cash value | May 8, 2026 |
| 26 | TUFANO PAUL J | 0.04% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 65.71K | No cash value | No cash value | May 8, 2026 |
| 27 | Driscoll Ryan | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 7.67K | $377.60 | $2,894,304 | May 7, 2026 |
| 28 | Mills Regan | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 11.40K | $342.17 | $3,900,396 | Apr 8, 2026 |
| 29 | JOHNSON MERCEDES | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 6.36K | $312.20 | $1,986,529 | Apr 6, 2026 |
| 30 | Mills Regan | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 11.41K | $290.88 | $3,320,395 | Apr 2, 2026 |
| 31 | Poulin Shannon John | 0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 16.07K | $312.20 | $5,018,303 | Apr 1, 2026 |
| 32 | Mills Regan | <0.01% | Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale. | 11.67K | $312.20 | $3,642,437 | Apr 1, 2026 |
Showing 32 of 96 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest TER shareholders?
Teradyne Inc (TER) institutional holders are ranked by reported share count when ownership data publishes filing rows.
What is institutional ownership of TER?
Teradyne Inc (TER) institutional ownership appears when filing-based market data returns holder rows. TECHi does not fill unavailable ownership fields with placeholder shareholders.
Where can I see Teradyne Inc insider transactions?
Teradyne Inc (TER) has 96 Form 4 insider transactions on file, most recently on Jun 15, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.
Are TER insiders buying or selling?
Recent TER insider activity reads Net selling: 29 sales and 0 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.
Who is the most active TER insider?
Smith Gregory Stephen is the most active TER insider by absolute share movement, with 1.89 million shares moving across the filing history. Review the action labels before treating that activity as buying or selling.