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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+

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$3.7M−26.0%Mar 9

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$667K−5.0%Dec 12

Natural Gas Services Group Inc

Jean K Holley · Director

$70K+18.0%Dec 10

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$642K−5.0%Dec 5

Natural Gas Services Group Inc

Jean K Holley · Director

$100K+93.0%Sep 4

Natural Gas Services Group Inc

Jean K Holley · Director

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$297K−2.0%Nov 26

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$1.2M−7.0%Nov 21

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$339K−2.0%Nov 18

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$245K−2.0%Nov 13

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

$104K−1.0%Nov 13

Natural Gas Services Group Inc

Stephen Charles Taylor · Director

Natural Gas Services Group Inc

Justin Jacobs · CEO

$48K+691.0%Jun 18

Natural Gas Services Group Inc

Leslie Ann Beyer · Director

$33K−27.0%Dec 8

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$59K−1.0%Jun 8

Natural Gas Services Group Inc

James R Hazlett · VP - Technical Services

$42K−3.0%Jun 1

Natural Gas Services Group Inc

John Chisholm · Director

$36K−22.0%Mar 31

Natural Gas Services Group Inc

James R Hazlett · VP - Technical Services

$40K−3.0%Mar 3

Natural Gas Services Group Inc

James R Hazlett · VP - Technical Services

$33K−3.0%Oct 7

Natural Gas Services Group Inc

John Chisholm · Director

$70K−34.0%Sep 14

Natural Gas Services Group Inc

John Chisholm · Director

$56K−22.0%Aug 30

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$30K−3.0%Dec 10

Natural Gas Services Group Inc

David L Bradshaw · Director

$51K−13.0%Jun 5

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$55K−5.0%Apr 25

Natural Gas Services Group Inc

G Larry Lawrence · CFO

$74K−7.0%Apr 10

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$52K−5.0%Apr 1

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$35K−3.0%Mar 27

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$46K−1.0%Feb 6

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$218K−4.0%Feb 4

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$108K−2.0%Jan 30

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$138K−2.0%Jan 25

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$424K−7.0%Jan 22

Natural Gas Services Group Inc

John Chisholm · Director

$46K−19.0%Jan 9

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$303K−4.0%Aug 31

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$74K−1.0%Aug 27

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$60K−1.0%Aug 23

Natural Gas Services Group Inc

John Chisholm · Director

$105K−29.0%Mar 28

Natural Gas Services Group Inc

John Chisholm · Director

$396K−51.0%Mar 27

Natural Gas Services Group Inc

David L Bradshaw · Director

$68K−14.0%Mar 14

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$39K−3.0%Jan 26

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$55K−4.0%Jan 24

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$186K−12.0%Jan 17

Natural Gas Services Group Inc

John Chisholm · Director

$102K−12.0%Dec 29

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$408K−6.0%Dec 20

Natural Gas Services Group Inc

G Larry Lawrence · CFO

$151K−13.0%Dec 20

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$111K−1.0%Oct 4

Natural Gas Services Group Inc

James R Hazlett · VP, Technical Services

$346K−21.0%Sep 28

Natural Gas Services Group Inc

Stephen Charles Taylor · CEO

$300K−4.0%Jul 5

Natural Gas Services Group Inc

David L Bradshaw · Director

$60K−12.0%Jun 21

Natural Gas Services Group Inc

William F Hughes Jr · Director

$40K−1.0%Jun 5

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.