Michael Hsing
Michael Hsing: CEO · Director at Monolithic Power. What Michael Hsing 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.
Monolithic Power (MPWR)
Michael Hsing holds 964,129 Monolithic Power shares (2.0% of the company), worth about $1.4B at the last price, according to the Form 4 of Sep 28, 2026.
- Shares held: 818,264 (1.7%), $1.2B — Held in their own name.
- Shares held: 145,865 (0.30%), $212.7M — Held through trusts (by M Hsing 04 Trust, ZH Family 2020 Trust).
Declarations
- Monolithic Power (MPWR) — Form 4 of Sep 28, 2026 (CEO): open-market sale of 596 at $1,323.31; open-market sale of 2,121 at $1,328.54; 964,129 shares after 0001214659-26-012375
- Monolithic Power (MPWR) — Form 4 of May 18, 2026 (CEO): open-market sale of 3,424 at $1,462.61; open-market sale of 5,819 at $1,467.62; 994,128 shares after 0001214659-26-006625
- Monolithic Power (MPWR) — Form 4 of Feb 12, 2026 (CEO): open-market sale of 12,731 at $1,155.71; open-market sale of 4,992 at $1,159.84; 1.0M shares after 0001214659-26-002084
- Monolithic Power (MPWR) — Form 4 of Feb 11, 2026 (CEO): open-market sale of 363 at $1,158.71; open-market sale of 1,366 at $1,163.71; 1.1M shares after 0001214659-26-001738
- Monolithic Power (MPWR) — Form 4 of Feb 10, 2026 (CEO): open-market sale of 4,302 at $1,132.01; open-market sale of 6,325 at $1,136.75; 1.1M shares after 0001214659-26-001587
- Monolithic Power (MPWR) — Form 4 of Feb 6, 2026 (CEO): open-market sale of 54,923 at $1,171.16; 1.1M shares after 0001214659-26-001447
- Monolithic Power (MPWR) — Form 4 of Feb 3, 2026 (CEO): grant or award of 136,825; 1.2M shares after 0001214659-26-001253
- Monolithic Power (MPWR) — Form 4 of Dec 9, 2025 (CEO): gift of 12,337; 1.1M shares after 0001214659-25-017938
- Monolithic Power (MPWR) — Form 4 of Nov 12, 2025 (CEO): open-market sale of 403 at $957.58; open-market sale of 2,799 at $958.34; 1.1M shares after 0001214659-25-016420
- Monolithic Power (MPWR) — Form 4 of Nov 11, 2025 (CEO): open-market sale of 80 at $951.69; open-market sale of 1,516 at $952.62; 1.1M shares after 0001214659-25-016419
- Monolithic Power (MPWR) — Form 4 of Oct 30, 2025 (CEO): shares withheld for tax of 121,918 at $1,096.63; 1.1M shares after 0001214659-25-015710
- Monolithic Power (MPWR) — Form 4 of Oct 25, 2025 (CEO): grant or award of 302,920; 1.3M shares after 0001214659-25-015476
- Monolithic Power (MPWR) — Form 4 of Aug 15, 2025 (CEO): open-market sale of 2,603 at $825.69; open-market sale of 2,555 at $826.64; 960,532 shares after 0001214659-25-012411
- Monolithic Power (MPWR) — Form 4 of Feb 18, 2025 (CEO): open-market sale of 5,200 at $700.00; 980,763 shares after 0001214659-25-003202
- Monolithic Power (MPWR) — Form 4 of Feb 10, 2025 (CEO): open-market sale of 2,594 at $717.10; 985,936 shares after 0001214659-25-002481
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.