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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+

ALPHA & OMEGA SEMICONDUCTOR Ltd

Bing Xue · EVP-WW Sales & Bus Development

$30K−0.7%Jul 17

ALPHA & OMEGA SEMICONDUCTOR Ltd

Bing Xue · EVP-WW Sales & Bus Development

$231K−3.8%Jun 17

ALPHA & OMEGA SEMICONDUCTOR Ltd

Claudia Chen · Director

$161K−12.6%May 26

ALPHA & OMEGA SEMICONDUCTOR Ltd

Bing Xue · EVP-WW Sales & Bus Development

$202K−3.7%May 20

Alpha & Omega Semiconductor Ltd

Yifan Liang · CFO, Corp Secretary

$302K−3.0%Apr 20

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$57K−1.0%Apr 20

Alpha & Omega Semiconductor Ltd

Yifan Liang · CFO, Corp Secretary

$810K−9.0%Apr 16

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$53K−2.0%Mar 18

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$55K−2.0%Feb 18

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$38K−1.0%Dec 16

Alpha & Omega Semiconductor Ltd

Wenjun Li · COO

$77K−3.0%Oct 25

Alpha & Omega Semiconductor Ltd

Wenjun Li · COO

$303K−13.0%Sep 12

Alpha & Omega Semiconductor Ltd

Lucas S. Chang · Director

$129K−9.0%Aug 23

Alpha & Omega Semiconductor Ltd

Yifan Liang · CFO, Corp Secretary

$356K−3.0%Aug 13

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$38K−1.0%Apr 22

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$90K−3.0%Mar 21

Alpha & Omega Semiconductor Ltd

Yifan Liang · CFO, Corp Secretary

$1.6M−19.0%Mar 13

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$325K−10.0%Feb 15

Alpha & Omega Semiconductor Ltd

Mike F Chang · Executive Chair and 10% owner

$807K−1.0%Jan 30

Alpha & Omega Semiconductor Ltd

Michael L Pfeiffer · Director

$91K−5.0%Jan 19

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$35K−1.0%Jan 16

Alpha & Omega Semiconductor Ltd

Mike F Chang · Executive Chair and 10% owner

$796K−1.0%Dec 29

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$31K−2.0%Dec 18

Alpha & Omega Semiconductor Ltd

Mike F Chang · Executive Chair and 10% owner

$750K−1.0%Dec 18

Alpha & Omega Semiconductor Ltd

Mike F Chang · Executive Chair and 10% owner

$751K−1.0%Oct 27

Alpha & Omega Semiconductor Ltd

Mike F Chang · Executive Chair and 10% owner

$859K−1.0%Sep 27

Alpha & Omega Semiconductor Ltd

Mike F Chang · Executive Chair and 10% owner

$930K−1.0%Sep 5

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$71K−3.0%Jul 13

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$118K−5.0%Jun 15

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$77K−4.0%May 15

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$101K−5.0%Apr 14

Alpha & Omega Semiconductor Ltd

Yifan Liang · CFO, Corp Secretary

$198K−3.0%Jan 10

Alpha & Omega Semiconductor Ltd

Mike F Chang · CEO and 10% owner

$1.7M−1.0%Jan 10

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$75K−4.0%Oct 17

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$29K−1.0%Sep 22

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$120K−5.0%Aug 17

Alpha & Omega Semiconductor Ltd

Michael J Salameh · Director

$251K−12.0%Aug 16

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$71K−3.0%Jul 19

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$51K−2.0%Jun 17

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$58K−2.0%May 17

Alpha & Omega Semiconductor Ltd

Michael J Salameh · Director

$400K−17.0%May 17

Alpha & Omega Semiconductor Ltd

Michael J Salameh · Director

$92K−4.0%May 12

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$88K−3.0%Apr 19

Alpha & Omega Semiconductor Ltd

Michael J Salameh · Director

$665K−18.0%Apr 5

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$200K−6.0%Mar 17

Alpha & Omega Semiconductor Ltd

Mike F Chang · CEO and 10% owner

$3.1M−1.0%Mar 17

Alpha & Omega Semiconductor Ltd

Wenjun Li · COO

$145K−19.0%Jan 14

Alpha & Omega Semiconductor Ltd

Wenjun Li · COO

$283K−28.0%Jan 11

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$317K−11.0%Dec 13

Alpha & Omega Semiconductor Ltd

Bing Xue · EVP-WW Sales, Bus Development

$84K−4.0%Nov 12

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.