MPWR's three largest insider shareholders as of April 22, 2026 are Michael Hsing (Ceo, 996.75K shares), Michael Hsing (Ceo, 888.23K shares), Deming Xiao (Pres. Of Mps Asia Operations, 295.05K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Michael Hsing | Ceo | 996,746 | 0 | 15 Nov, 2022 |
| Michael Hsing | Ceo | 888,234 | 0 | 17 Feb, 2026 |
| Deming Xiao | Pres. Of Mps Asia Operations | 295,047 | 0 | 05 Apr, 2022 |
| Deming Xiao | Pres. Of Mps Asia Operations | 295,047 | 0 | 05 Apr, 2022 |
| Deming Xiao | Pres. Of Mps Asia Operations | 295,047 | 0 | 05 Apr, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 269,232 | 0 | 05 Apr, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 269,232 | 0 | 05 Apr, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 269,232 | 0 | 05 Apr, 2022 |
| Saria Tseng | Vp General Counsel | 261,383 | 0 | 04 Oct, 2022 |
| Deming Xiao | Evp, Global Operations | 235,932 | 0 | 10 Feb, 2026 |
| Deming Xiao | Evp, Global Operations | 235,932 | 0 | 10 Feb, 2026 |
| Deming Xiao | Evp, Global Operations | 235,932 | 0 | 10 Feb, 2026 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 205,206 | 0 | 05 May, 2023 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 205,206 | 0 | 05 May, 2023 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 205,206 | 0 | 05 May, 2023 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 178,625 | 0 | 10 Feb, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 178,625 | 0 | 10 Feb, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 178,625 | 0 | 10 Feb, 2026 |
| Saria Tseng | Evp General Counsel | 156,983 | 0 | 10 Apr, 2026 |
| Theodore Blegen | Cfo | 143,492 | 0 | 04 Feb, 2022 |
| Theodore Blegen | Cfo | 136,039 | 0 | 09 Feb, 2022 |
| Theodore Blegen | Evp And Cfo | 82,353 | 0 | 10 Feb, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 76,120 | 13 Nov, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 76,120 | 13 Nov, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 76,120 | 13 Nov, 2025 |
| James C Moyer | Chief Ic Design Engineer | 0 | 64,823 | 18 Nov, 2021 |
| James C Moyer | Chief Ic Design Engineer | 0 | 64,823 | 18 Nov, 2021 |
| James C Moyer | Chief Ic Design Engineer | 0 | 64,823 | 18 Nov, 2021 |
| Victor K Lee | - | 27,756 | 0 | 11 Feb, 2026 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 26,700 | 16 May, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 26,700 | 16 May, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 26,700 | 16 May, 2022 |
| Deming Xiao | Evp, Global Operations | 0 | 20,455 | 29 Aug, 2024 |
| Deming Xiao | Evp, Global Operations | 0 | 20,455 | 29 Aug, 2024 |
| Deming Xiao | Evp, Global Operations | 0 | 20,455 | 29 Aug, 2024 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 18,962 | 06 Aug, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 18,962 | 06 Aug, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 18,962 | 06 Aug, 2025 |
| Eugen J Elmiger | - | 17,402 | 0 | 03 Feb, 2026 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 13,502 | 05 Jan, 2023 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 13,502 | 05 Jan, 2023 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 13,502 | 05 Jan, 2023 |
| Theodore Blegen | Cfo | 0 | 10,662 | 11 Aug, 2021 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 7,000 | 06 Jul, 2021 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 7,000 | 06 Jul, 2021 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 7,000 | 06 Jul, 2021 |
| Jeff Zhou | - | 5,800 | 0 | 03 Feb, 2026 |
| Jeff Zhou | - | 5,800 | 0 | 03 Feb, 2026 |
| Jeff Zhou | - | 5,800 | 0 | 03 Feb, 2026 |
| Jeff Zhou | - | 5,651 | 0 | 12 Aug, 2022 |
| Jeff Zhou | - | 5,651 | 0 | 12 Aug, 2022 |
| Jeff Zhou | - | 5,651 | 0 | 12 Aug, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 5,097 | 05 May, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 5,097 | 05 May, 2022 |
| Maurice Sciammas | Sr. V.P.Of Sales And Marketing | 0 | 5,097 | 05 May, 2022 |
| Deming Xiao | Evp, Global Operations | 0 | 4,336 | 11 Aug, 2025 |
| Deming Xiao | Evp, Global Operations | 0 | 4,336 | 11 Aug, 2025 |
| Deming Xiao | Evp, Global Operations | 0 | 4,336 | 11 Aug, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 4,015 | 12 May, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 4,015 | 12 May, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 4,015 | 12 May, 2025 |
| James C Moyer | - | 0 | 4,000 | 12 Feb, 2024 |
| James C Moyer | - | 0 | 4,000 | 14 Feb, 2024 |
| James C Moyer | - | 0 | 4,000 | 12 Feb, 2024 |
| James C Moyer | - | 0 | 4,000 | 14 Feb, 2024 |
| James C Moyer | - | 0 | 4,000 | 12 Feb, 2024 |
| James C Moyer | - | 0 | 4,000 | 14 Feb, 2024 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,499 | 28 May, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,499 | 28 May, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,499 | 28 May, 2025 |
| Eileen Wynne | - | 1,342 | 0 | 03 Feb, 2026 |
| Eileen Wynne | - | 1,342 | 0 | 03 Feb, 2026 |
| Eileen Wynne | - | 1,342 | 0 | 03 Feb, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,299 | 05 Nov, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,299 | 05 Nov, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,299 | 05 Nov, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,239 | 03 Apr, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,239 | 03 Apr, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,239 | 03 Apr, 2026 |
| Carintia Martinez | - | 1,067 | 0 | 03 Feb, 2026 |
| Carintia Martinez | - | 1,067 | 0 | 03 Feb, 2026 |
| Carintia Martinez | - | 1,067 | 0 | 03 Feb, 2026 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,000 | 19 Aug, 2025 |
| Saria Tseng | Evp General Counsel | 0 | 1,000 | 24 Dec, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,000 | 19 Aug, 2025 |
| Maurice Sciammas | Evp, Ww Sales Marketing | 0 | 1,000 | 19 Aug, 2025 |
| Kuo Wei Herbert Chang | - | 615 | 0 | 03 Feb, 2026 |
| James C Moyer | Chief Ic Design Engineer | 348 | 0 | 08 Feb, 2024 |
| James C Moyer | Chief Ic Design Engineer | 348 | 0 | 08 Feb, 2024 |
| James C Moyer | Chief Ic Design Engineer | 348 | 0 | 08 Feb, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 560 | $1,266.48 | 165,386 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 360 | $1,270.29 | 165,026 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 240 | $1,279.55 | 164,786 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 120 | $1,287.12 | 164,666 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 400 | $1,292.08 | 164,266 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 800 | $1,302.52 | 163,466 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 1,279 | $1,308.30 | 162,187 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 4,244 | $1,312.82 | 157,943 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 840 | $1,319.25 | 157,103 | D | S |
| 08 Apr, 2026 | Saria Tseng | Common Stock | D | 120 | $1,321.94 | 156,983 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 244 | $1,139.96 | 173,338 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 556 | $1,144.42 | 172,782 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 480 | $1,149.05 | 172,302 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 560 | $1,159.62 | 171,742 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 684 | $1,165.66 | 171,058 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 2,036 | $1,170.38 | 169,022 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 1,680 | $1,176.35 | 167,342 | D | S |
| 06 Apr, 2026 | Saria Tseng | Common Stock | D | 1,396 | $1,179.50 | 165,946 | D | S |
| 01 Apr, 2026 | Saria Tseng | Common Stock | D | 576 | $1,131.24 | 174,406 | D | S |
| 01 Apr, 2026 | Maurice Sciammas | Common Stock | D | 30 | $1,116.44 | 1,239 | I | S |