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+

Pro filters

PRTASell

PROTHENA CORP PUBLIC LTD CO

Anne Evans Kingston · Chief Strategy Officer

$65K−12.1%Jul 31

PRTASell

PROTHENA CORP PUBLIC LTD CO

Michael John Isaacs · General Counsel & Company Sec.

$71K−19.0%Jul 31

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$170K−100.0%Jan 24

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$186K−100.0%Dec 20

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$170K−100.0%Nov 30

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$205K−100.0%Oct 25

PRTASell

Prothena Corp Public Ltd Co

Brandon S. Smith · COO

$187K−100.0%Oct 11

PRTASell

Prothena Corp Public Ltd Co

Carol D. Karp · Chief Regulatory Officer

$233K−100.0%Oct 4

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$237K−100.0%Sep 27

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$262K−100.0%Sep 19

PRTASell

Prothena Corp Public Ltd Co

Hideki Garren · Chief Medical Officer

$111K−100.0%Sep 13

PRTASell

Prothena Corp Public Ltd Co

Brandon S. Smith · COO

$222K−100.0%Sep 13

PRTASell

Prothena Corp Public Ltd Co

Carol D. Karp · Chief Regulatory Officer

$274K−100.0%Sep 6

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$275K−100.0%Aug 30

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$286K−100.0%Aug 18

PRTASell

Prothena Corp Public Ltd Co

Hideki Garren · Chief Medical Officer

$117K−100.0%Aug 16

PRTASell

Prothena Corp Public Ltd Co

Brandon S. Smith · COO

$235K−100.0%Aug 16

PRTASell

Prothena Corp Public Ltd Co

Wagner M. Zago · Chief Scientific Officer

$268K−100.0%Aug 2

PRTASell

Prothena Corp Public Ltd Co

Carol D. Karp · Chief Regulatory Officer

$335K−100.0%Aug 2

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$312K−100.0%Jul 26

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$346K−100.0%Jul 19

PRTASell

Prothena Corp Public Ltd Co

Hideki Garren · Chief Medical Officer

$135K−100.0%Jul 12

PRTASell

Prothena Corp Public Ltd Co

Brandon S. Smith · COO

$270K−100.0%Jul 12

PRTASell

Prothena Corp Public Ltd Co

Carol D. Karp · Chief Regulatory Officer

$341K−100.0%Jul 5

PRTASell

Prothena Corp Public Ltd Co

Wagner M. Zago · Chief Scientific Officer

$273K−100.0%Jul 5

PRTASell

Prothena Corp Public Ltd Co

Dennis J. Selkoe · Director

$337K−54.0%Jul 3

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$349K−100.0%Jun 28

PRTASell

Prothena Corp Public Ltd Co

Hideki Garren · Chief Medical Officer

$542K−100.0%Jun 16

PRTASell

Prothena Corp Public Ltd Co

Brandon S. Smith · COO

$395K−100.0%Jun 14

PRTASell

Prothena Corp Public Ltd Co

Hideki Garren · Chief Medical Officer

$347K−100.0%Jun 14

PRTASell

Prothena Corp Public Ltd Co

Wagner M. Zago · Chief Scientific Officer

$1.4M−100.0%Jun 7

PRTASell

Prothena Corp Public Ltd Co

Carol D. Karp · Chief Regulatory Officer

$1.4M−100.0%Jun 7

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$323K−100.0%May 31

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$370K−100.0%May 19

PRTASell

Prothena Corp Public Ltd Co

Gene G. Kinney · President and CEO

$3.3M−78.0%May 17

PRTASell

Prothena Corp Public Ltd Co

Tran Nguyen · Chief Strategy Officer and CFO

$7.0M−97.0%May 17

PRTASell

Prothena Corp Public Ltd Co

Dennis J. Selkoe · Director

$855K−78.0%May 5

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$267K−100.0%Apr 28

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$264K−100.0%Apr 21

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$245K−100.0%Mar 31

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$239K−100.0%Mar 22

PRTASell

Prothena Corp Public Ltd Co

Karin L Walker · Chief Accounting Officer

$968K−100.0%Mar 17

PRTASell

Prothena Corp Public Ltd Co

Tran Nguyen · Chief Strategy Officer and CFO

$484K−76.0%Mar 17

PRTASell

Prothena Corp Public Ltd Co

Michael J Malecek · General Counsel

$727K−100.0%Mar 17

PRTASell

Prothena Corp Public Ltd Co

Hideki Garren · Chief Medical Officer

$581K−100.0%Mar 17

PRTASell

Prothena Corp Public Ltd Co

Tran Nguyen · Chief Strategy Officer and CFO

$533K−76.0%Feb 17

PRTASell

Prothena Corp Public Ltd Co

Tran Nguyen · Chief Strategy Officer and CFO

$555K−76.0%Jan 20

PRTASell

Prothena Corp Public Ltd Co

Shane Cooke · Director

$265K−100.0%Jan 12

PRTASell

Prothena Corp Public Ltd Co

Lars Ekman · Chair of the Board

$886K−98.0%Jan 5

PRTASell

Prothena Corp Public Ltd Co

Richard T Collier · Director

$263K−80.0%Jan 5

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?

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.