Insiders who reported open-market trades in the last 12 months at the companies Mike F. Chang files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Yifan Liang - $1.11M in AOSL purchases and sales in the last 12 months
Bing Xue - $716K in AOSL purchases and sales in the last 12 months
Mike F. Chang is a corporate insider, tracked as Director, 10% Owner of ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL). InsiderAlpha holds 11 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Mike F. Chang submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Mike F. Chang been buying or selling stock?
Recorded transactions: 1 open-market purchase ($641K) and 0 open-market sales across all tracked filings.
Mike F. Chang is Director, 10% Owner of ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL). 11 SEC Form 4 filings on record going back to 2024, most recently on 11 September 2026. Most recent open-market trade: bought $641K of AOSL on 10 March 2026. Lifetime open-market purchases: $641K.
Recent transactions
15
The latest 15 SEC Form 4 transactions reported by Mike F. Chang.
InsiderAlpha's records for Mike F. Chang go back to 2024: 11 primary Form 4 filings, an average of 3.7 per year. The typical open-market purchase is $641K (1 buy totaling $641K). The largest single buy on record is $641K of AOSL in 2026. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
