← Insider buys

Mike F Chang has bought AOSL on 6 days since Nov 2018

Director and 10% owner at Alpha and Omega Semiconductor Limited

SEC CIK 0001511393 · Filings on SEC.gov ↗

$2.1MBought
$18.7MSold
Mar 10Last buy

Mike F Chang's record

3 months after each buy, from the first price a copier could get.

1 buy has 3 months of prices so far. A record shows here at 3.

Every filing

20 filings since Oct 2016, newest first

AOSLBuy

Alpha & Omega Semiconductor Ltd

Director and 10% owner

$641K+1.0%Mar 10
AOSLSell

Alpha & Omega Semiconductor Ltd

Executive Chair and 10% owner

$807K−1.0%Jan 30
AOSLSell

Alpha & Omega Semiconductor Ltd

Executive Chair and 10% owner

$796K−1.0%Dec 29
AOSLSell

Alpha & Omega Semiconductor Ltd

Executive Chair and 10% owner

$750K−1.0%Dec 18
AOSLSell

Alpha & Omega Semiconductor Ltd

Executive Chair and 10% owner

$751K−1.0%Oct 27
AOSLSell

Alpha & Omega Semiconductor Ltd

Executive Chair and 10% owner

$859K−1.0%Sep 27
AOSLSell

Alpha & Omega Semiconductor Ltd

Executive Chair and 10% owner

$930K−1.0%Sep 5
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$1.7M−1.0%Jan 10
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$3.1M−1.0%Mar 17
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$730K−1.0%Jan 12
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$3.5M−3.0%Jan 8
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$1.5M−2.0%Oct 6
AOSLBuy

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$371K+1.0%Dec 27
AOSLBuy

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$309K+1.0%Dec 21
AOSLBuy

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$401K+1.0%Dec 19
AOSLBuy

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$362K+1.0%Dec 10
AOSLBuy

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$39KNov 21
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$1.1M−1.0%Dec 14
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$1.1M−1.0%Nov 15
AOSLSell

Alpha & Omega Semiconductor Ltd

CEO and 10% owner

$1.1M−1.0%Oct 12
About Mike F Chang

Mike F. Chang, Ph.D., is the founder and Chairman of the Board of Alpha & Omega Semiconductor Ltd (AOSL), a power semiconductor design and manufacturing company established in 2000( He holds the position of Executive Vice President of Strategic Initiatives and maintains approximately 10% ownership of the company, with holdings of over 4.5 million shares valued at approximately $105 million as of mid-2025( Dr. Chang previously served as Chief Executive Officer until March 2023, when he transitioned to his current board leadership role(

With a doctorate degree from the University of Missouri and an undergraduate degree from National Cheng Kung University( Dr. Chang brings extensive semiconductor industry experience to his leadership. Prior to founding Alpha & Omega Semiconductor, he held positions as Executive Vice President at Siliconix, Inc. (1998–2000) and as a Principal at GE Aerospace (1987)( Under his strategic vision, Alpha & Omega Semiconductor has developed proprietary technology integration capabilities and established vertical integration through manufacturing facilities including an 8-inch wafer fab in Oregon and a joint venture for a 12-inch wafer fab in China, positioning the company as a leader in advanced power semiconductor technologies for applications including AI data centers and electric vehicles(

Written by Perplexity from public sources.

Filings come from SEC EDGAR. Not investment advice.