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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 24, 11:19 AM EDT · Statements Mar 30, 8:00 PM EDT

Source timingDetails

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
Source: Market data provider
Analystevery 1 day
Provider checked
Source: Market data provider
Newsevery 4 hr
Latest item
Source: Market data provider

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.

Smith Gregory Stephen

SaleOpen-market or direct sale reported on Form 4.
Shares
120.47K
% company
0.08%
Price
$423.03
Value
$50,962,424

Filed Jun 15, 2026

MATZ MARILYN

SaleOpen-market or direct sale reported on Form 4.
Shares
17.44K
% company
0.01%
Price
$423.03
Value
$7,378,066

Filed Jun 15, 2026

Herweck Peter

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
16.14K
% company
0.01%
Price
Not reported
Value
Not reported

Filed Jun 12, 2026

MADDOCK ERNEST E

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
10.27K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Jun 12, 2026

TUFANO PAUL J

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
65.73K
% company
0.04%
Price
Not reported
Value
Not reported

Filed Jun 12, 2026

Hathout Jean Pierre

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
9.73K
% company
<0.01%
Price
$392.62
Value
$3,821,370

Filed Jun 2, 2026

JOHNSON MERCEDES

SaleOpen-market or direct sale reported on Form 4.
Shares
6.86K
% company
<0.01%
Price
$369.74
Value
$2,537,895

Filed Jun 2, 2026

Hathout Jean Pierre

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
9.91K
% company
<0.01%
Price
$369.47
Value
$3,660,339

Filed Jun 1, 2026

Poulin Shannon John

SaleOpen-market or direct sale reported on Form 4.
Shares
15.72K
% company
0.01%
Price
$355.00
Value
$5,581,310

Filed May 22, 2026

Poulin Shannon John

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
8.53K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 21, 2026

Poulin Shannon John

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
16.38K
% company
0.01%
Price
$345.98
Value
$5,666,460

Filed May 21, 2026

Poulin Shannon John

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
17.91K
% company
0.01%
Price
$82.61
Value
$1,479,462

Filed May 21, 2026

Poulin Shannon John

SaleOpen-market or direct sale reported on Form 4.
Shares
15.07K
% company
<0.01%
Price
$345.37
Value
$5,203,344

Filed May 21, 2026

MATZ MARILYN

SaleOpen-market or direct sale reported on Form 4.
Shares
18.64K
% company
0.01%
Price
$350.00
Value
$6,524,350

Filed May 21, 2026

Smith Gregory Stephen

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
% company
Price
No cash value
Value
No cash value

Filed May 15, 2026

Smith Gregory Stephen

SaleOpen-market or direct sale reported on Form 4.
Shares
124.47K
% company
0.08%
Price
$338.98
Value
$42,192,841

Filed May 15, 2026

Smith Gregory Stephen

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
133.07K
% company
0.09%
Price
$72.10
Value
$9,594,131

Filed May 15, 2026

MATZ MARILYN

SaleOpen-market or direct sale reported on Form 4.
Shares
19.04K
% company
0.01%
Price
$338.98
Value
$6,454,518

Filed May 15, 2026

Henry Andrew Chisholm

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.88K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 8, 2026

Herweck Peter

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
16.13K
% company
0.01%
Price
No cash value
Value
No cash value

Filed May 8, 2026

MATZ MARILYN

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
19.84K
% company
0.01%
Price
No cash value
Value
No cash value

Filed May 8, 2026

van Kralingen Bridget A

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
6.22K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 8, 2026

Sayiner Necip

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.80K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 8, 2026

MADDOCK ERNEST E

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
10.27K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 8, 2026

JOHNSON MERCEDES

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
7.03K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed May 8, 2026

TUFANO PAUL J

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
65.71K
% company
0.04%
Price
No cash value
Value
No cash value

Filed May 8, 2026

Driscoll Ryan

SaleOpen-market or direct sale reported on Form 4.
Shares
7.67K
% company
<0.01%
Price
$377.60
Value
$2,894,304

Filed May 7, 2026

Mills Regan

SaleOpen-market or direct sale reported on Form 4.
Shares
11.40K
% company
<0.01%
Price
$342.17
Value
$3,900,396

Filed Apr 8, 2026

JOHNSON MERCEDES

SaleOpen-market or direct sale reported on Form 4.
Shares
6.36K
% company
<0.01%
Price
$312.20
Value
$1,986,529

Filed Apr 6, 2026

Mills Regan

SaleOpen-market or direct sale reported on Form 4.
Shares
11.41K
% company
<0.01%
Price
$290.88
Value
$3,320,395

Filed Apr 2, 2026

Poulin Shannon John

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
16.07K
% company
0.01%
Price
$312.20
Value
$5,018,303

Filed Apr 1, 2026

Mills Regan

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
11.67K
% company
<0.01%
Price
$312.20
Value
$3,642,437

Filed Apr 1, 2026

Henry Andrew Chisholm

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
2.21K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Mar 26, 2026

Herweck Peter

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
15.47K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Mar 26, 2026

TUFANO PAUL J

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
65.05K
% company
0.04%
Price
No cash value
Value
No cash value

Filed Mar 26, 2026

Herweck Peter

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
15.37K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Mar 13, 2026

MADDOCK ERNEST E

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
9.60K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Mar 13, 2026

TUFANO PAUL J

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
64.89K
% company
0.04%
Price
Not reported
Value
Not reported

Filed Mar 13, 2026

JOHNSON MERCEDES

SaleOpen-market or direct sale reported on Form 4.
Shares
6.99K
% company
<0.01%
Price
$299.20
Value
$2,090,810

Filed Mar 5, 2026

Mills Regan

SaleOpen-market or direct sale reported on Form 4.
Shares
11.89K
% company
<0.01%
Price
$332.87
Value
$3,957,491

Filed Feb 25, 2026

JOHNSON MERCEDES

SaleOpen-market or direct sale reported on Form 4.
Shares
7.61K
% company
<0.01%
Price
$266.98
Value
$2,032,519

Filed Feb 5, 2026

Hathout Jean Pierre

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
886
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Hathout Jean Pierre

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
10.17K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Poulin Shannon John

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
3.94K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Poulin Shannon John

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
17.24K
% company
0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Mills Regan

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
886
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Mills Regan

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
12.68K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Smith Gregory Stephen

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
11.81K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Smith Gregory Stephen

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
128.47K
% company
0.08%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Driscoll Ryan

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
1.57K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Driscoll Ryan

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
8.35K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Feb 4, 2026

Hathout Jean Pierre

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
9.17K
% company
<0.01%
Price
$249.53
Value
$2,288,190

Filed Feb 2, 2026

Mills Regan

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
11.67K
% company
<0.01%
Price
$249.53
Value
$2,912,764

Filed Feb 2, 2026

Smith Gregory Stephen

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
115.09K
% company
0.07%
Price
$249.53
Value
$28,718,408

Filed Feb 2, 2026

Driscoll Ryan

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
6.56K
% company
<0.01%
Price
$249.53
Value
$1,637,166

Filed Feb 2, 2026

Mills Regan

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
12.02K
% company
<0.01%
Price
$250.48
Value
$3,010,269

Filed Jan 28, 2026

Smith Gregory Stephen

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
121.85K
% company
0.08%
Price
$250.48
Value
$30,521,739

Filed Jan 28, 2026

Driscoll Ryan

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
6.97K
% company
<0.01%
Price
$250.48
Value
$1,747,098

Filed Jan 28, 2026

Mills Regan

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
12.19K
% company
<0.01%
Price
$238.94
Value
$2,911,484

Filed Jan 27, 2026

Smith Gregory Stephen

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
122.34K
% company
0.08%
Price
$238.94
Value
$29,231,681

Filed Jan 27, 2026

Smith Gregory Stephen

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
152.95K
% company
0.10%
Price
No cash value
Value
No cash value

Filed Jan 27, 2026

Driscoll Ryan

Tax withholdingShares withheld to cover tax obligations. Usually administrative, not an open-market sale.
Shares
7.06K
% company
<0.01%
Price
$238.94
Value
$1,686,200

Filed Jan 27, 2026

JOHNSON MERCEDES

SaleOpen-market or direct sale reported on Form 4.
Shares
8.24K
% company
<0.01%
Price
$211.85
Value
$1,745,220

Filed Jan 5, 2026

Herweck Peter

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
15.37K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Dec 17, 2025

Herweck Peter

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
15.36K
% company
<0.01%
Price
No cash value
Value
No cash value

Filed Dec 17, 2025

MADDOCK ERNEST E

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
9.60K
% company
<0.01%
Price
Not reported
Value
Not reported

Filed Dec 17, 2025

TUFANO PAUL J

JProvider-supplied Form 4 action code. Review the original filing before making a trading judgment.
Shares
64.86K
% company
0.04%
Price
Not reported
Value
Not reported

Filed Dec 17, 2025

TUFANO PAUL J

Award / grantAward, grant, or acquisition under an equity compensation plan.
Shares
64.83K
% company
0.04%
Price
No cash value
Value
No cash value

Filed Dec 17, 2025

Smith Gregory Stephen

SaleOpen-market or direct sale reported on Form 4.
Shares
93.41K
% company
0.06%
Price
$201.31
Value
$18,804,166

Filed Dec 12, 2025

JOHNSON MERCEDES

SaleOpen-market or direct sale reported on Form 4.
Shares
8.86K
% company
<0.01%
Price
$200.00
Value
$1,772,600

Filed Dec 5, 2025

Smith Gregory Stephen

SaleOpen-market or direct sale reported on Form 4.
Shares
94.52K
% company
0.06%
Price
$180.20
Value
$17,031,963

Filed Nov 12, 2025

Smith Gregory Stephen

Option exerciseDerivative exercise or conversion before any separate sale row.
Shares
% company
Price
No cash value
Value
No cash value

Filed Nov 5, 2025

Showing 72 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.