MICHAEL L. PFEIFFER

Corporate Board Profile

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ALPHA & OMEGA SEMICONDUCTOR Ltd

Filing Date Source Excerpt
2014-10-06 "Mr. Pfeiffer is a certified public accountant... and he has extensive experience in public accounting"
2015-09-24 "Mr. Pfeiffer is a certified public accountant in California and Oregon, and he has extensive experience in public accounting"
2016-10-03 "Mr. Pfeiffer, who is a certified public accountant in California and Oregon, worked for PricewaterhouseCoopers LLP for over 30 years"
2017-10-03 "Mr. Pfeiffer, who is a certified public accountant in California and Oregon, worked for PricewaterhouseCoopers LLP for over 30 years"
2018-10-09 "Mr. Pfeiffer, who is a certified public accountant in California and Oregon, worked for PricewaterhouseCoopers LLP for over 30 years"
2019-10-07 "Mr. Pfeiffer, who is a certified public accountant... worked for PricewaterhouseCoopers LLP for over 30 years"
2020-09-28 "Mr. Pfeiffer, who is a certified public accountant... worked for PricewaterhouseCoopers LLP for over 30 years"
2021-10-01 "Mr. Pfeiffer, who is a certified public accountant... worked for PricewaterhouseCoopers LLP for over 30 years, including 18 years as the engagement partner on the audits of the financial statements of high technology companies"
2022-10-13 "Mr. Pfeiffer, who is a certified public accountant... worked for PricewaterhouseCoopers LLP for over 30 years"
2023-09-25 "Mr. Pfeiffer, who is a certified public accountant... worked for PricewaterhouseCoopers LLP for over 30 years"
2024-09-25 "Mr. Pfeiffer, who is a certified public accountant in California, worked for PricewaterhouseCoopers LLP for over 30 years"

Source material: SEC submissions metadata and DEF 14A proxy filings from EDGAR. Last updated: 2026-04-08