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AOSL SEC Filing News — Alpha and Omega Semiconductor Limited

Latest SEC filings for Alpha and Omega Semiconductor Limited (AOSL) explained in plain English: insider buying and selling (Form 4), proposed insider sales (Form 144), material company events (8-K), and quarterly & annual reports (10-Q / 10-K). Sourced directly from SEC EDGAR.

What you’re looking at: Each item below is parsed from an actual SEC filing. Form 4 = confirmed insider transaction · Form 144 = proposed sale notice · 8-K = material event (earnings, M&A, leadership change, etc.) · 10-Q / 10-K = quarterly / annual report.
Form 4 Tax / Compensation Filing 2026-06-03

AOSL insider Form 4 filed for equity award, exercise, or tax withholding

Chang Mike F (Director, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Chang Mike F (Director, 10% Owner) Shares: 30,000
Form 4 Tax / Compensation Filing 2026-05-28

AOSL insider Form 4 filed for equity award, exercise, or tax withholding

Chang Mike F (Director, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Chang Mike F (Director, 10% Owner) Shares: 39,780
Form 4 Tax / Compensation Filing 2026-05-27

AOSL insider Form 4 filed for equity award, exercise, or tax withholding

Chang Mike F (Director, 10% Owner) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Chang Mike F (Director, 10% Owner) Shares: 736,252
Form 4 Insider Selling 2026-05-26

AOSL insider Chen Claudia (Director) sold 4,061 shares (~$160.5K)

Chen Claudia, listed as Director at ALPHA & OMEGA SEMICONDUCTOR Ltd, reported an open-market sale of 4,061 AOSL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chen Claudia (Director) Shares: 4,061 Est. Value: $160.5K
Form 4 Tax / Compensation Filing 2026-05-26

AOSL insider Form 4 filed for equity award, exercise, or tax withholding

Chang Stephen Chunping (Director, Chief Executive Officer) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Chang Stephen Chunping (Director, Chief Executive Officer) Shares: 2,000
Form 144 Proposed Insider Sale 2026-05-22

AOSL Form 144 filed for proposed insider sale by CLAUDIA CHEN (4,061 shares) ~$321.1K

CLAUDIA CHEN filed a Form 144 with the SEC indicating intent to sell AOSL (ALPHA & OMEGA SEMICONDUCTOR Ltd) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: CLAUDIA CHEN Shares: 4,061 Est. Value: $321.1K
Form 4 Insider Selling 2026-05-20

AOSL insider Xue Bing (EVP-WW Sales & Bus Development) sold 4,916 shares (~$201.6K)

Xue Bing, listed as EVP-WW Sales & Bus Development at ALPHA & OMEGA SEMICONDUCTOR Ltd, reported an open-market sale of 4,916 AOSL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Xue Bing (EVP-WW Sales & Bus Development) Shares: 4,916 Est. Value: $201.6K
Form 144 Proposed Insider Sale 2026-05-18

AOSL Form 144 filed for proposed insider sale by BING XUE (4,916 shares) ~$403.1K

BING XUE filed a Form 144 with the SEC indicating intent to sell AOSL (ALPHA & OMEGA SEMICONDUCTOR Ltd) shares. Form 144 reflects a proposed sale, not a completed transaction. The actual execution, if any, would typically appear later in a Form 4.

Filing: Form 144 (Proposed Sale Notice) Insider: BING XUE Shares: 4,916 Est. Value: $403.1K
Form 8-K Material Company Update 2026-05-12

AOSL filed 8-K — material company event

ALPHA & OMEGA SEMICONDUCTOR Ltd filed an 8-K with the SEC reporting a material event. Filing excerpt: XBRL Viewer

Filing: 8-K (Material Event)
Form 10-Q Quarterly Report 2026-05-06

AOSL filed Quarterly Report (10-Q)

ALPHA & OMEGA SEMICONDUCTOR Ltd filed its quarterly report with the SEC. This report includes unaudited financial statements and management discussion for the quarter.

Filing: 10-Q (Quarterly Report)
Form 8-K Material Company Update 2026-05-06

AOSL filed 8-K — material company event

ALPHA & OMEGA SEMICONDUCTOR Ltd filed an 8-K with the SEC reporting a material event. Filing excerpt: XBRL Viewer

Filing: 8-K (Material Event)
Form 4 Tax / Compensation Filing 2026-04-30

AOSL insider Form 4 filed for equity award, exercise, or tax withholding

Liang Yifan (CFO and Corp Secretary) filed a Form 4 covering compensation-related activity such as stock awards, option exercises, conversions, or tax withholding. These filings are usually neutral.

Filing: Form 4 (Insider Transaction) Insider: Liang Yifan (CFO and Corp Secretary) Shares: 600
Form 4 Insider Selling 2026-04-20

AOSL insider Liang Yifan (CFO and Corp Secretary) sold 8,625 shares (~$301.9K)

Liang Yifan, listed as CFO and Corp Secretary at ALPHA & OMEGA SEMICONDUCTOR Ltd, reported an open-market sale of 8,625 AOSL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Liang Yifan (CFO and Corp Secretary) Shares: 8,625 Est. Value: $301.9K
Form 4 Insider Selling 2026-04-20

AOSL insider Chang Stephen Chunping (Director, Chief Executive Officer) sold 14,884 shares (~$513.0K)

Chang Stephen Chunping, listed as Director, Chief Executive Officer at ALPHA & OMEGA SEMICONDUCTOR Ltd, reported an open-market sale of 14,884 AOSL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Chang Stephen Chunping (Director, Chief Executive Officer) Shares: 14,884 Est. Value: $513.0K
Form 4 Insider Selling 2026-04-20

AOSL insider Xue Bing (EVP-WW Sales & Bus Development) sold 1,832 shares (~$57.2K)

Xue Bing, listed as EVP-WW Sales & Bus Development at ALPHA & OMEGA SEMICONDUCTOR Ltd, reported an open-market sale of 1,832 AOSL shares in a Form 4 filing. This is a confirmed insider sale, not just a proposed sale notice.

Filing: Form 4 (Insider Transaction) Insider: Xue Bing (EVP-WW Sales & Bus Development) Shares: 1,832 Est. Value: $57.2K
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