Deming Xiao
CIK 1308647 · View on SEC EDGAR ↗
Insider
First SEC filing: Nov. 18, 2004 · Latest: Feb. 14, 2017
On this page
- Insider at Companies where this person is a reporting insider.
- Insider transactions Every share this person bought or sold, from Form 4 filings.
- Derivatives Options and other derivative holdings reported by this person.
- Initial holdings The stakes this person held when they first started reporting.
- Compensation Executive pay disclosed in company proxy statements.
Insider at
Insider transactions
0 buys (P)
5 sells (S)
Net:
$-76,426,846
+ 19 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
19 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 6, 2026 | MPWR | S | 907 | $1661.38 | $1,506,872 | 205,959 Direct | -0.44% | Disposed | -20.8% (price as of 2026-08-21) |
| May 6, 2026 | MPWR | S | 11,597 | $1657.93 | $19,227,014 | 206,866 Direct | -5.31% | Disposed | -20.6% (price as of 2026-08-21) |
| May 6, 2026 | MPWR | S | 14,167 | $1652.80 | $23,415,218 | 218,463 Direct | -6.09% | Disposed | -20.4% (price as of 2026-08-21) |
| May 6, 2026 | MPWR | S | 3,329 | $1648.38 | $5,487,457 | 232,630 Direct | -1.41% | Disposed | -20.2% (price as of 2026-08-21) |
| Feb. 6, 2026 | MPWR | S | 22,875 | $1171.16 | $26,790,285 | 235,932 Direct | -8.84% | Disposed | 12.4% (price as of 2026-08-21) |
| Aug. 1, 2025 | MPWR | S | 39,999 | $780.00 | $31,199,220 | 121,605 Direct | -24.75% | Disposed | 68.7% (price as of 2026-08-21) |
| Feb. 10, 2025 | MPWR | S | 662 | $717.10 | $474,720 | 161,577 Direct | -0.41% | Disposed | 83.5% (price as of 2026-08-21) |
| Nov. 8, 2024 | MPWR | S | 866 | $765.14 | $662,611 | 162,239 Direct | -0.53% | Disposed | 72.0% (price as of 2026-08-21) |
| Aug. 27, 2024 | MPWR | S | 9,259 | $950.00 | $8,796,050 | 20,455 Indirect | -31.16% | Disposed | 38.5% (price as of 2026-08-21) |
| Aug. 22, 2024 | MPWR | S | 10,000 | $950.00 | $9,500,000 | 29,714 Indirect | -25.18% | Disposed | 38.5% (price as of 2026-08-21) |
| Aug. 8, 2024 | MPWR | S | 859 | $778.39 | $668,637 | 202,354 Direct | -0.42% | Disposed | 69.1% (price as of 2026-08-21) |
| July 22, 2024 | MPWR | S | 3,205 | $831.58 | $2,665,214 | 203,213 Direct | -1.55% | Disposed | 58.3% (price as of 2026-08-21) |
| May 22, 2024 | MPWR | S | 1,300 | $769.40 | $1,000,220 | 206,418 Direct | -0.63% | Disposed | 71.0% (price as of 2026-08-21) |
| May 8, 2024 | MPWR | S | 869 | $690.02 | $599,627 | 207,747 Direct | -0.42% | Disposed | 90.7% (price as of 2026-08-21) |
| Feb. 8, 2024 | MPWR | S | 859 | $680.00 | $584,120 | 208,580 Direct | -0.41% | Disposed | 93.5% (price as of 2026-08-21) |
| Feb. 5, 2024 | MPWR | S | 982 | $641.00 | $629,462 | 209,439 Direct | -0.47% | Disposed | 105.3% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 30 | $596.19 | $17,886 | 210,421 Direct | -0.01% | Disposed | 120.7% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 204 | $594.13 | $121,203 | 210,451 Direct | -0.10% | Disposed | 121.5% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 10 | $593.00 | $5,930 | 210,655 Direct | 0.00% | Disposed | 121.9% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 200 | $592.38 | $118,476 | 210,665 Direct | -0.09% | Disposed | 122.2% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 930 | $591.34 | $549,946 | 210,865 Direct | -0.44% | Disposed | 122.5% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 3,718 | $590.37 | $2,194,996 | 211,795 Direct | -1.73% | Disposed | 122.9% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 2,387 | $589.52 | $1,407,184 | 215,513 Direct | -1.10% | Disposed | 123.2% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 1,757 | $588.44 | $1,033,889 | 217,900 Direct | -0.80% | Disposed | 123.6% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 1,079 | $587.84 | $634,279 | 219,657 Direct | -0.49% | Disposed | 123.9% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 700 | $586.21 | $410,347 | 220,736 Direct | -0.32% | Disposed | 124.5% (price as of 2026-08-21) |
| Jan. 10, 2024 | MPWR | S | 500 | $584.39 | $292,195 | 221,436 Direct | -0.23% | Disposed | 125.2% (price as of 2026-08-21) |
| Jan. 4, 2024 | MPWR | S | 25,314 | $583.14 | $14,761,606 | 221,936 Direct | -10.24% | Disposed | 125.7% (price as of 2026-08-21) |
| Nov. 8, 2023 | MPWR | S | 859 | $490.39 | $421,245 | 250,641 Direct | -0.34% | Disposed | 168.4% (price as of 2026-08-21) |
| Nov. 6, 2023 | MPWR | S | 982 | $492.92 | $484,047 | 251,500 Direct | -0.39% | Disposed | 167.0% (price as of 2026-08-21) |
| Oct. 2, 2023 | MPWR | S | 4,305 | $458.30 | $1,972,982 | 252,482 Direct | -1.68% | Disposed | 187.1% (price as of 2026-08-21) |
| Aug. 8, 2023 | MPWR | S | 874 | $530.26 | $463,447 | 256,770 Direct | -0.34% | Disposed | 148.2% (price as of 2026-08-21) |
| Aug. 4, 2023 | MPWR | S | 988 | $526.53 | $520,212 | 257,644 Direct | -0.38% | Disposed | 149.9% (price as of 2026-08-21) |
| July 21, 2023 | MPWR | S | 9,615 | $534.23 | $5,136,621 | 258,632 Direct | -3.58% | Disposed | 146.3% (price as of 2026-08-21) |
| July 3, 2023 | MPWR | S | 4,305 | $537.79 | $2,315,186 | 268,247 Direct | -1.58% | Disposed | 144.7% (price as of 2026-08-21) |
| May 9, 2023 | MPWR | S | 857 | $409.79 | $351,190 | 272,552 Direct | -0.31% | Disposed | 221.1% (price as of 2026-08-21) |
| May 4, 2023 | MPWR | S | 991 | $459.60 | $455,464 | 273,409 Direct | -0.36% | Disposed | 186.3% (price as of 2026-08-21) |
| May 3, 2023 | MPWR | S | 3,462 | $463.55 | $1,604,810 | 274,400 Direct | -1.25% | Disposed | 183.9% (price as of 2026-08-21) |
| April 3, 2023 | MPWR | S | 4,360 | $487.99 | $2,127,636 | 269,177 Direct | -1.59% | Disposed | 169.7% (price as of 2026-08-21) |
| Feb. 15, 2023 | MPWR | S 10b5-1 | 1,497 | $530.00 | $793,410 | 273,537 Direct | -0.54% | Disposed | 148.3% (price as of 2026-08-21) |
| Feb. 13, 2023 | MPWR | S | 1,639 | $492.31 | $806,896 | 275,004 Direct | -0.59% | Disposed | 167.3% (price as of 2026-08-21) |
| Feb. 9, 2023 | MPWR | S 10b5-1 | 2,129 | $520.00 | $1,107,080 | 276,643 Direct | -0.76% | Disposed | 153.1% (price as of 2026-08-21) |
| Feb. 8, 2023 | MPWR | S | 6,922 | $462.41 | $3,200,802 | 278,772 Direct | -2.42% | Disposed | 184.6% (price as of 2026-08-21) |
| Feb. 6, 2023 | MPWR | S | 723 | $446.88 | $323,094 | 250,954 Direct | -0.29% | Disposed | 194.5% (price as of 2026-08-21) |
| Jan. 24, 2023 | MPWR | S 10b5-1 | 10,243 | $430.00 | $4,404,490 | 251,677 Direct | -3.91% | Disposed | 206.0% (price as of 2026-08-21) |
| Jan. 12, 2023 | MPWR | S 10b5-1 | 2,980 | $400.00 | $1,192,000 | 261,920 Direct | -1.12% | Disposed | 229.0% (price as of 2026-08-21) |
| Jan. 3, 2023 | MPWR | S | 5,528 | $344.96 | $1,906,939 | 264,900 Direct | -2.04% | Disposed | 281.5% (price as of 2026-08-21) |
| Nov. 15, 2022 | MPWR | S | 2,377 | $408.68 | $971,432 | 270,428 Direct | -0.87% | Disposed | 222.0% (price as of 2026-08-21) |
| Nov. 14, 2022 | MPWR | S | 1,385 | $390.33 | $540,607 | 272,805 Direct | -0.51% | Disposed | 237.2% (price as of 2026-08-21) |
| Nov. 4, 2022 | MPWR | S | 982 | $343.98 | $337,788 | 274,190 Direct | -0.36% | Disposed | 282.6% (price as of 2026-08-21) |
| Oct. 3, 2022 | MPWR | S | 4,305 | $372.60 | $1,604,043 | 275,172 Direct | -1.54% | Disposed | 253.2% (price as of 2026-08-21) |
| Aug. 12, 2022 | MPWR | S | 1,633 | $525.95 | $858,876 | 279,457 Direct | -0.58% | Disposed | 150.2% (price as of 2026-08-21) |
| Aug. 4, 2022 | MPWR | S | 984 | $522.39 | $514,032 | 281,090 Direct | -0.35% | Disposed | 151.9% (price as of 2026-08-21) |
| July 1, 2022 | MPWR | S | 4,515 | $361.58 | $1,632,534 | 282,074 Direct | -1.58% | Disposed | 264.0% (price as of 2026-08-21) |
| May 27, 2022 | MPWR | S | 1,495 | $457.00 | $683,215 | 286,589 Direct | -0.52% | Disposed | 188.0% (price as of 2026-08-21) |
| May 24, 2022 | MPWR | S | 4,298 | $392.44 | $1,686,707 | 288,084 Direct | -1.47% | Disposed | 235.3% (price as of 2026-08-21) |
| May 12, 2022 | MPWR | S | 1,679 | $388.10 | $651,620 | 292,382 Direct | -0.57% | Disposed | 239.1% (price as of 2026-08-21) |
| May 6, 2022 | MPWR | S | 986 | $453.16 | $446,816 | 294,061 Direct | -0.33% | Disposed | 190.4% (price as of 2026-08-21) |
| April 1, 2022 | MPWR | S | 4,420 | $467.23 | $2,065,157 | 295,047 Direct | -1.48% | Disposed | 181.7% (price as of 2026-08-21) |
| Feb. 14, 2022 | MPWR | S | 1,663 | $429.60 | $714,425 | 299,475 Direct | -0.55% | Disposed | 206.3% (price as of 2026-08-21) |
| Feb. 8, 2022 | MPWR | S | 1,700 | $401.12 | $681,904 | 301,138 Direct | -0.56% | Disposed | 228.1% (price as of 2026-08-21) |
| Feb. 7, 2022 | MPWR | S | 7,393 | $399.28 | $2,951,877 | 302,838 Direct | -2.38% | Disposed | 229.6% (price as of 2026-08-21) |
| Jan. 3, 2022 | MPWR | S | 4,305 | $490.87 | $2,113,195 | 270,532 Direct | -1.57% | Disposed | 168.1% (price as of 2026-08-21) |
| Nov. 30, 2021 | MPWR | S | 4,366 | $560.00 | $2,444,960 | 274,837 Direct | -1.56% | Disposed | 135.0% (price as of 2026-08-21) |
| Nov. 22, 2021 | MPWR | S | 427 | $580.00 | $247,660 | 279,203 Direct | -0.15% | Disposed | 126.9% (price as of 2026-08-21) |
| Nov. 12, 2021 | MPWR | S | 1,625 | $553.42 | $899,308 | 279,630 Direct | -0.58% | Disposed | 137.8% (price as of 2026-08-21) |
| Nov. 8, 2021 | MPWR | S | 2,022 | $548.27 | $1,108,602 | 281,255 Direct | -0.71% | Disposed | 140.0% (price as of 2026-08-21) |
| Aug. 30, 2021 | MPWR | S | 4,886 | $500.00 | $2,443,000 | 287,607 Direct | -1.67% | Disposed | 163.2% (price as of 2026-08-21) |
| Aug. 26, 2021 | MPWR | S | 6,495 | $489.00 | $3,176,055 | 292,493 Direct | -2.17% | Disposed | 169.1% (price as of 2026-08-21) |
| Aug. 19, 2021 | MPWR | S | 4,739 | $462.00 | $2,189,418 | 298,988 Direct | -1.56% | Disposed | 184.8% (price as of 2026-08-21) |
| Aug. 12, 2021 | MPWR | S | 1,651 | $457.10 | $754,672 | 303,698 Direct | -0.54% | Disposed | 187.9% (price as of 2026-08-21) |
| Aug. 9, 2021 | MPWR | S | 2,053 | $459.12 | $942,573 | 305,349 Direct | -0.67% | Disposed | 186.6% (price as of 2026-08-21) |
| Aug. 2, 2021 | MPWR | S | 400 | $457.27 | $182,908 | 307,402 Direct | -0.13% | Disposed | 187.8% (price as of 2026-08-21) |
| Aug. 2, 2021 | MPWR | S | 1,000 | $456.46 | $456,460 | 307,802 Direct | -0.32% | Disposed | 188.3% (price as of 2026-08-21) |
| Aug. 2, 2021 | MPWR | S | 1,200 | $455.46 | $546,552 | 308,802 Direct | -0.39% | Disposed | 188.9% (price as of 2026-08-21) |
| Aug. 2, 2021 | MPWR | S | 3,895 | $454.40 | $1,769,888 | 310,002 Direct | -1.24% | Disposed | 189.6% (price as of 2026-08-21) |
| July 6, 2021 | MPWR | S 10b5-1 | 7,734 | $380.00 | $2,938,920 | 309,025 Direct | -2.44% | Disposed | 246.3% (price as of 2026-08-21) |
| July 1, 2021 | MPWR | S | 4,305 | $370.45 | $1,594,787 | 316,759 Direct | -1.34% | Disposed | 255.2% (price as of 2026-08-21) |
| May 28, 2021 | MPWR | S | 2,485 | $343.76 | $854,244 | 321,064 Direct | -0.77% | Disposed | 282.8% (price as of 2026-08-21) |
| May 12, 2021 | MPWR | S | 1,741 | $311.83 | $542,896 | 323,549 Direct | -0.54% | Disposed | 322.0% (price as of 2026-08-21) |
| May 10, 2021 | MPWR | S | 2,196 | $326.41 | $716,796 | 325,290 Direct | -0.67% | Disposed | 303.2% (price as of 2026-08-21) |
Showing latest 100 of 735 transactions
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II)
Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Feb. 2, 2021 | MPWR | Performance Shares | Common Stock (0) | — | — | 32,165 | Disposed |
| July 21, 2020 | MPWR | Performance Shares [F1] | Common Stock (32,165) | — | — | 32,165 | Acquired |
| July 21, 2020 | MPWR | Performance Shares [F1] | Common Stock (32,165) | — | — | 32,165 | Acquired |
| Feb. 4, 2020 | MPWR | Restricted Stock Units | Common Stock (19,200) | — | — | 19,200 | Disposed |
| July 23, 2019 | MPWR | Restricted Stock Units | Common Stock (9,600) | — | — | 9,600 | Disposed |
| April 23, 2019 | MPWR | Restricted Stock Units | Common Stock (9,600) | — | — | 9,600 | Disposed |
| Oct. 25, 2018 | MPWR | Performance Shares | Common Stock (12,885) | — | — | 12,885 | Disposed |
| Oct. 25, 2018 | MPWR | Performance Shares | Common Stock (15,075) | — | — | 15,075 | Disposed |
| Oct. 25, 2018 | MPWR | Restricted Stock Units [F3] | Common Stock (48,000) | — | — | 48,000 | Acquired |
| Feb. 7, 2017 | MPWR | Performance Shares | Common Stock (4,876) | — | — | 4,876 | Disposed |
| Oct. 28, 2016 | MPWR | Performance Shares | Common Stock (14,628) | — | — | 14,628 | Disposed |
| Dec. 31, 2015 | MPWR | Performance Shares | Common Stock | — | — | 75,678 | Acquired |
| Dec. 17, 2015 | MPWR | Performance Shares | Common Stock (43,200) | — | — | 43,200 | Disposed |
| March 18, 2015 | MPWR | Performance Shares | Common Stock (43,200) | — | — | 43,200 | Disposed |
| Feb. 3, 2015 | MPWR | Performance Shares | Common Stock (43,200) | — | — | 43,200 | Disposed |
| Oct. 21, 2014 | MPWR | Performance Shares | Common Stock (43,200) | — | — | 43,200 | Disposed |
| July 22, 2014 | MPWR | Performance Shares | Common Stock (43,200) | — | — | 43,200 | Disposed |
| Feb. 13, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (1,882) | $17.92 | Aug. 3, 2014 | 1,882 | Disposed |
| Feb. 13, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (2,944) | $15.03 | Oct. 28, 2015 | 2,944 | Disposed |
| Feb. 11, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (1,291) | $15.03 | Oct. 28, 2015 | 1,291 | Disposed |
| Feb. 11, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (1,103) | $14.89 | Feb. 8, 2015 | 1,103 | Disposed |
| Feb. 11, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (80) | $10.41 | Dec. 7, 2014 | 80 | Disposed |
| Feb. 11, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (2,127) | $10.41 | Dec. 7, 2014 | 2,127 | Disposed |
| Dec. 14, 2013 | MPWR | Performance Shares [F5] | Common Stock | — | — | 216,000 | Acquired |
| Dec. 14, 2013 | MPWR | Performance Shares | Common Stock (216,000) | — | — | 43,200 | Acquired |
| Oct. 25, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (3,294) | $11.31 | Oct. 26, 2013 | 3,294 | Disposed |
| Aug. 9, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (141) | $14.89 | Oct. 28, 2015 | 141 | Disposed |
| Aug. 9, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (470) | $15.03 | Oct. 28, 2015 | 470 | Disposed |
| Aug. 9, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (941) | $17.92 | Aug. 3, 2014 | 941 | Disposed |
| Aug. 8, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (0) | — | Oct. 28, 2015 | 1,429 | Disposed |
| Aug. 7, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (40,000) | — | Aug. 3, 2014 | 40,000 | Disposed |
| July 17, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (61,297) | — | Oct. 28, 2015 | 61,297 | Disposed |
| July 16, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (23,450) | — | Feb. 8, 2015 | 23,450 | Disposed |
| July 16, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (28,703) | — | Oct. 28, 2015 | 28,703 | Disposed |
| July 12, 2013 | MPWR | Incentive Stock Option (right to buy) | Common Stock (46,836) | — | Dec. 7, 2014 | 46,836 | Disposed |
| May 3, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (70,000) | — | Oct. 26, 2013 | 70,000 | Disposed |
| Feb. 28, 2013 | MPWR | Incentive Stock Option (right to buy) [F1] | Common Stock (80) | $10.41 | Dec. 7, 2014 | 80 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (80) | $10.41 | Dec. 7, 2014 | 80 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (2,127) | $10.41 | Dec. 7, 2014 | 2,127 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (3,294) | $11.31 | Oct. 26, 2013 | 3,294 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (1,103) | $14.89 | Feb. 8, 2015 | 1,103 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (4,235) | $15.03 | Oct. 28, 2015 | 4,235 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (1,882) | $17.92 | Aug. 3, 2014 | 1,882 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (141) | $14.89 | Oct. 28, 2015 | 141 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (470) | $15.03 | Oct. 28, 2015 | 470 | Acquired |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (941) | $17.92 | Aug. 3, 2014 | 941 | Acquired |
| Feb. 20, 2013 | MPWR | Incentive Stock Option (right to buy) | Common Stock (100) | $10.91 | Dec. 7, 2014 | 100 | Disposed |
| Feb. 7, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (3,000) | $15.60 | Feb. 8, 2015 | 3,000 | Disposed |
| Feb. 7, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (8,571) | $15.74 | Oct. 28, 2015 | 8,571 | Disposed |
| Feb. 7, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $18.77 | Aug. 3, 2014 | 20,000 | Disposed |
| Aug. 27, 2012 | MPWR | Incentive Stock Option (right to buy) | Common Stock (23,760) | $10.91 | Dec. 7, 2014 | 23,760 | Disposed |
| Aug. 16, 2012 | MPWR | Incentive Stock Option (right to buy) | Common Stock (4,688) | $16.00 | Jan. 17, 2016 | 4,688 | Disposed |
| Aug. 16, 2012 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (10,312) | $16.00 | Jan. 17, 2016 | 10,312 | Disposed |
| Aug. 9, 2012 | MPWR | Incentive Stock Option (right to buy) | Common Stock (41,329) | $8.05 | April 26, 2015 | 41,329 | Disposed |
| Aug. 9, 2012 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (12,108) | $8.05 | April 26, 2015 | 12,108 | Disposed |
| July 5, 2012 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (11,563) | $8.05 | April 26, 2015 | 11,563 | Disposed |
| May 1, 2012 | MPWR | Incentive Stock Option (right to buy) | Common Stock (2,381) | $5.00 | Jan. 28, 2014 | 2,381 | Disposed |
| April 30, 2012 | MPWR | Incentive Stock Option (right to buy) | Common Stock (44,494) | $5.00 | Jan. 28, 2014 | 44,494 | Disposed |
| May 29, 2009 | MPWR | Incentive Stock Option (right to buy) | Common Stock (48,334) | $1.20 | Sept. 11, 2013 | 48,334 | Disposed |
| Oct. 28, 2008 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (90,000) | $15.74 | Oct. 28, 2015 | 90,000 | Acquired |
| Oct. 28, 2008 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (10,000) | $15.74 | Oct. 28, 2015 | 10,000 | Acquired |
| Aug. 12, 2008 | MPWR | Incentive Stock Option (right to buy) | Common Stock (3,125) | $5.00 | Jan. 28, 2014 | 3,125 | Disposed |
| Aug. 12, 2008 | MPWR | Incentive Stock Option (right to buy) | Common Stock (9,304) | $10.91 | Dec. 7, 2014 | 9,304 | Disposed |
| May 13, 2008 | MPWR | Incentive Stock Option (right to buy) | Common Stock (48,333) | $1.20 | Oct. 15, 2012 | 48,333 | Disposed |
| May 13, 2008 | MPWR | Incentive Stock Option (right to buy) | Common Stock (20,000) | $1.20 | Sept. 11, 2013 | 20,000 | Disposed |
| Feb. 8, 2008 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (23,450) | $15.60 | Feb. 8, 2015 | 23,450 | Acquired |
| Feb. 8, 2008 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (3,000) | $15.60 | Feb. 8, 2015 | 3,000 | Acquired |
| Aug. 17, 2007 | MPWR | Incentive Stock Option (right to buy) | Common Stock (12,544) | $0.80 | Jan. 16, 2012 | 12,544 | Disposed |
| Aug. 15, 2007 | MPWR | Incentive Stock Option (right to buy) | Common Stock (2,456) | $0.80 | Jan. 16, 2012 | 2,456 | Disposed |
| Aug. 14, 2007 | MPWR | Incentive Stock Option (right to buy) | Common Stock (14,000) | $0.80 | June 5, 2011 | 14,000 | Disposed |
| Aug. 3, 2007 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (40,000) | $18.77 | Aug. 3, 2014 | 40,000 | Acquired |
| Aug. 3, 2007 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $18.77 | Aug. 3, 2014 | 20,000 | Acquired |
| Feb. 26, 2007 | MPWR | Incentive Stock Option (right to buy) | Common Stock (11,666) | $1.20 | Sept. 11, 2013 | 11,666 | Disposed |
| Feb. 26, 2007 | MPWR | Incentive Stock Option (right to buy) | Common Stock (8,334) | $1.20 | Oct. 15, 2012 | 8,334 | Disposed |
| Feb. 26, 2007 | MPWR | Incentive Stock Option (right to buy) | Common Stock (11,666) | $1.20 | Oct. 15, 2012 | 11,666 | Disposed |
| Oct. 26, 2006 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (70,000) | $11.85 | Oct. 26, 2013 | 70,000 | Acquired |
| May 11, 2006 | MPWR | Incentive Stock Option (right to buy) | Common Stock (10,000) | $0.80 | June 5, 2011 | 10,000 | Disposed |
| Jan. 17, 2006 | MPWR | Incentive Stock Option (right to buy) | Common Stock (4,688) | $16.00 | Jan. 17, 2016 | 4,688 | Acquired |
| Jan. 17, 2006 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (10,312) | $16.00 | Jan. 17, 2016 | 10,312 | Acquired |
| April 26, 2005 | MPWR | Incentive Stock Option (right to buy) | Common Stock (41,329) | $8.05 | April 26, 2015 | 41,329 | Acquired |
| April 26, 2005 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (23,671) | $8.05 | April 26, 2015 | 23,671 | Acquired |
| Dec. 7, 2004 | MPWR | Stock Option (right to buy) | Common Stock (80,000) | $10.91 | Dec. 7, 2015 | 80,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 6 holdings
Securities held when first becoming an insider, per SEC Form 3.
| Date | Ticker | Security | Shares | Ownership |
|---|---|---|---|---|
| Nov. 18, 2004 | MPWR | Common Stock | 86,333 | Direct |
| Nov. 18, 2004 | MPWR | Stock Option (right to buy)→ Common Stock (24,000) | 24,000 | Direct |
| Nov. 18, 2004 | MPWR | Stock Option (right to buy)→ Common Stock (15,000) | 15,000 | Direct |
| Nov. 18, 2004 | MPWR | Stock Option (right to buy)→ Common Stock (56,667) | 56,667 | Direct |
| Nov. 18, 2004 | MPWR | Stock Option (right to buy)→ Common Stock (80,000) | 80,000 | Direct |
| Nov. 18, 2004 | MPWR | Stock Option (right to buy)→ Common Stock (50,000) | 50,000 | Direct |
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $536,100 | — | $5,222,429 | — | $3,229,200 | — | $6,694 | $8,994,423 |
| 2024 | $510,642 | — | $5,050,493 | — | $2,979,236 | — | $1,035 | $8,541,406 |
| 2023 | $434,296 | — | $5,144,271 | — | $796,314 | — | — | $6,374,881 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.