Stephen Chunping Chang

Stephen Chunping Chang: Chief Executive Officer · Director at Alpha & Omega Semiconductor. What Stephen Chunping Chang holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.

Alpha & Omega Semiconductor (AOSL)

Stephen Chunping Chang holds 735,017 Alpha & Omega Semiconductor shares (2.4% of the company), worth about $19.7M at the last price, according to the Form 4 of Aug 24, 2026.

• Shares held: 634,070 (2.1%), $17.0M — Held in their own name.
• Shares held: 100,947 (0.33%), $2.7M — Held through trusts (By STEPHEN CHUPING CHANG TTEE TRUST).

Declarations

• Alpha & Omega Semiconductor (AOSL) — Form 4 of Aug 24, 2026 (Chief Executive Officer): gift of 100,947; 735,017 shares after 0001628280-26-061540
• Alpha & Omega Semiconductor (AOSL) — Form 4 of May 21, 2026 (Chief Executive Officer): gift of 2,000; 634,070 shares after 0001628280-26-038057
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Apr 17, 2026 (Chief Executive Officer): open-market sale of 1,492 at $32.90; open-market sale of 3,481 at $33.90; 635,901 shares after 0001628280-26-025993
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Apr 14, 2026 (Chief Executive Officer): open-market sale of 5,594 at $31.90; 650,785 shares after 0001628280-26-025500
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Mar 16, 2026 (Chief Executive Officer): grant or award of 67,500; shares withheld for tax of 25,644 at $21.43; 656,379 shares after 0001722000-26-000003
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Jan 2, 2026 (Chief Executive Officer): shares withheld for tax of 12,002 at $20.66; 564,862 shares after 0001387467-26-000002
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Sep 9, 2025 (Chief Executive Officer): gift of 2,100; 576,705 shares after 0001628280-25-041884
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Mar 17, 2025 (Chief Executive Officer): grant or award of 67,500; shares withheld for tax of 19,996 at $27.61; 578,678 shares after 0001387467-25-000032
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Jan 2, 2025 (Chief Executive Officer): shares withheld for tax of 11,224 at $36.54; 484,687 shares after 0001387467-25-000010
• Alpha & Omega Semiconductor (AOSL) — Form 4 of Nov 8, 2024 (Chief Executive Officer): gift of 2,000; 495,784 shares after 0001387467-24-000110

Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.

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