SEC Form 4 · STOCK Act

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

$ZSTK

ZeroStack Corp.

+206.0%

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

COPIED JUL 21

$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.

WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · Director

$389K−4.8%Sep 16
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · Director

$303K−3.4%Sep 9
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · Director

$5.2M−37.8%Sep 4
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$5.2M−19.0%May 15
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$926K−4.0%May 14
WLDNSell

Willdan Group, Inc.

Steven A Cohen · Director

$491K−22.0%Mar 10
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$496K−6.0%Nov 12
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$83K−1.0%Nov 8
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$27KAug 14
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$709K−10.0%Aug 12
WLDNSell

Willdan Group, Inc.

Creighton K Early · EVP and CFO

$365K−13.0%Aug 8
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$818K−12.0%Aug 8
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$5.6M−13.0%Jul 11
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$366K−1.0%Jun 18
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$135K−3.0%Jun 14
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$585K−1.0%Jun 13
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$271K−5.0%Jun 13
WLDNSell

Willdan Group, Inc.

Mohammad Shahidehpour · Director

$92K−19.0%Jun 12
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President and CEO

$103K−2.0%Jun 12
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$1.1M−2.0%Jun 10
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · Director

$634K−5.0%May 30
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · Director

$257K−2.0%May 23
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · Director

$462K−3.0%May 21
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · Director

$235K−2.0%May 20
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$403K−1.0%May 16
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$3.0M−6.0%May 13
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$925K−2.0%May 8
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$4.7M−9.0%May 3
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$969K−2.0%Mar 28
WLDNSell

Willdan Group, Inc.

Forager Fund, L.P. · 10% owner

$2.3M−4.0%Mar 28
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · CEO

$50K−1.0%Aug 28
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President

$55K−2.0%Aug 24
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · CEO

$111K−1.0%Aug 24
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · CEO

$43K−1.0%Mar 14
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President

$47K−2.0%Mar 14
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President

$43K−2.0%Mar 13
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · CEO

$39K−1.0%Mar 13
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · CEO

$46K−1.0%Mar 10
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President

$50K−2.0%Mar 10
WLDNSell

Willdan Group, Inc.

Mohammad Shahidehpour · Director

$50K−17.0%Sep 13
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President

$754K−17.0%Aug 12
WLDNSell

Willdan Group, Inc.

Dennis Mcginn V · Director

$80K−26.0%Jun 7
WLDNSell

Willdan Group, Inc.

Paul Milton Whitelaw · SVP, Business Development

$209K−23.0%Mar 17
WLDNSell

Willdan Group, Inc.

Micah Chen · General Counsel

$117K−16.0%Mar 17
WLDNSell

Willdan Group, Inc.

Creighton K Early · VP and CFO

$231K−16.0%Mar 17
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · CEO

$895K−8.0%Mar 17
WLDNSell

Willdan Group, Inc.

Michael A Bieber · President

$712K−17.0%Mar 17
WLDNSell

Willdan Group, Inc.

Thomas Donald Brisbin · CEO

$109K−1.0%Mar 10
WLDNSell

Willdan Group, Inc.

Micah Chen · General Counsel

$207K−26.0%Dec 20
WLDNSell

Willdan Group, Inc.

Paul Milton Whitelaw · SVP, Business Development

$450K−42.0%Dec 17

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?

We're building an iPhone app that alerts you to new filings and, if you choose, copies a buy into your own brokerage after you approve it. It isn't out yet, and the waitlist is free.