SEC Form 4 · STOCK Act

Insider buys that paid off for the people who copied them.

ZeroStack Corp.

+206.0%

Michael Heinrich, Executive Chair, bought $3.5M. Filed Jul 20, 6:31 PM ET.

$1,000 copied at the first price after the filing (Jul 21 open, $1.66) was $3,060 30 trading days later.

Example. Of 339 buys of $100K or more filed Jun 29 to Sep 11, the median lost 5.3% and 67.8% lost money over the same 30 trading days. Not investment advice.

Officers and directors must report their own stock purchases within two business days. We list every one, largest first, with what copying it would have returned.

A free account keeps a watchlist. No password: we email you a link.

4 h delay

Buys Sells Buys and sells Any size $100K+$1M+

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TERSell

TERADYNE, INC

Marilyn Matz · Director

$140K−3.1%4d ago

TERSell

TERADYNE, INC

Gregory Stephen Smith · President and CEO

$1.4M−3.7%Oct 19

TERSell

TERADYNE, INC

Marilyn Matz · Director

$273K−5.8%Oct 19

TERSell

TERADYNE, INC

Mercedes Johnson · Director

$67K−2.6%Oct 2

TERSell

TERADYNE, INC

Marilyn Matz · Director

$140K−2.8%Sep 18

TERSell

TERADYNE, INC

Gregory Stephen Smith · President and CEO

$1.4M−3.6%Sep 16

TERSell

TERADYNE, INC

Marilyn Matz · Director

$270K−5.3%Sep 16

TERSell

TERADYNE, INC

Mercedes Johnson · Director

$57K−2.6%Sep 2

TERSell

TERADYNE, INC

Gregory Stephen Smith · President and CEO

$1.7M−3.4%Aug 18

TERSell

TERADYNE, INC

Marilyn Matz · Director

$510K−7.4%Aug 18

TERSell

TERADYNE, INC

Mercedes Johnson · Director

$59K−2.5%Aug 4

TERSell

TERADYNE, INC

Gregory Stephen Smith · President and CEO

$1.4M−3.3%Jul 16

TERSell

TERADYNE, INC

Marilyn Matz · Director

$428K−6.9%Jul 16

TERSell

TERADYNE, INC

Mercedes Johnson · Director

$77K−2.4%Jul 2

TERSell

TERADYNE, INC

Marilyn Matz · Director

$508K−6.4%Jun 16

TERSell

TERADYNE, INC

Gregory Stephen Smith · President and CEO

$1.7M−3.2%Jun 16

TERSell

TERADYNE, INC

Mercedes Johnson · Director

$62K−2.4%Jun 3

TERSell

Teradyne, Inc

Gregory Stephen Smith · President and CEO

$2.9M−6.0%May 19

TERSell

Teradyne, Inc

Marilyn Matz · Director

$271K−4.0%May 19

TERSell

Teradyne, Inc

Ryan Driscoll · VP, General Counsel and Secretary

$257K−8.0%May 11

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$195K−7.0%Apr 7

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$187K−7.0%Mar 6

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$167K−6.0%Feb 6

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$132K−6.0%Jan 6

TERSell

Teradyne, Inc

Gregory Stephen Smith · President and CEO

$223K−1.0%Dec 15

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$125K−5.0%Dec 8

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$70K−4.0%Nov 12

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$83K−4.0%Oct 3

TERSell

Teradyne, Inc

Richard John Burns · Pres, Semiconductor Test

$130K−4.0%Oct 3

TERSell

Teradyne, Inc

Gregory Stephen Smith · President and CEO

$409K−4.0%Oct 3

TERSell

Teradyne, Inc

Gregory Stephen Smith · President and CEO

$400K−4.0%Sep 13

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$83K−4.0%Sep 5

TERSell

Teradyne, Inc

Sanjay Mehta · VP and CFO

$819K−15.0%Aug 22

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$80K−4.0%Aug 5

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$93K−3.0%Jul 3

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$90K−3.0%Jun 5

TERSell

Teradyne, Inc

Richard John Burns · Pres, Semiconductor Test

$689K−19.0%May 22

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$76K−4.0%May 8

TERSell

Teradyne, Inc

Sanjay Mehta · VP and CFO

$450K−8.0%May 7

TERSell

Teradyne, Inc

Richard John Burns · Pres, Semiconductor Test

$183K−9.0%Jan 31

TERSell

Teradyne, Inc

Sanjay Mehta · VP and CFO

$909K−22.0%Jan 31

TERSell

Teradyne, Inc

Richard John Burns · Pres, Semiconductor Test

$36K−2.0%Jan 26

TERSell

Teradyne, Inc

Sanjay Mehta · VP and CFO

$120K−2.0%Jan 26

TERSell

Teradyne, Inc

Brad Robbins · Pres, LitePoint Corp.

$155K−3.0%Dec 19

TERSell

Teradyne, Inc

Brad Robbins · Pres, LitePoint Corp.

$217K−4.0%Oct 2

TERSell

Teradyne, Inc

Sanjay Mehta · VP and CFO

$2.5M−39.0%Aug 16

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$86K−4.0%Jul 19

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$82K−4.0%Jun 20

TERSell

Teradyne, Inc

Brad Robbins · Pres, LitePoint Corp.

$236K−4.0%Jun 20

TERSell

Teradyne, Inc

Mercedes Johnson · Director

$75K−4.0%May 31

Older filings

Filings come from SEC EDGAR within a minute of the SEC accepting them. Without Pro, each one unlocks 4 hours later. Not investment advice.

Questions

Where does the data come from?

Corporate insider trades come straight from SEC Form 4 filings, pulled from EDGAR within a minute of each filing. Congress trades come from STOCK Act disclosures. All of it is public and free to browse here, and Pro sees the newest filings first.

How often is it updated?

Every minute from 6 AM to 10 PM New York time on weekdays, the hours the SEC accepts filings. Pro sees each filing as it lands. Without Pro, a filing unlocks 4 hours after the SEC accepts it.

Is following insider trades legal?

Yes. Insiders are legally required to disclose their trades within a few days. Acting on those public disclosures is completely legal. Trading on private, non-public information is illegal, but that's a different thing.

What does the iPhone app add?

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