James C Moyer
CIK 1308656 · View on SEC EDGAR ↗
Insider
First SEC filing: Feb. 10, 2006 · Latest: Feb. 1, 2007
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Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 16 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
16 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Nov. 16, 2023 | MPWR | S | 211 | $540.18 | $113,978 | 0 Indirect | -100.00% | Disposed | 142.4% (price as of 2026-08-20) |
| Nov. 16, 2023 | MPWR | S | 1,502 | $539.60 | $810,479 | 211 Indirect | -87.68% | Disposed | 142.7% (price as of 2026-08-20) |
| Nov. 16, 2023 | MPWR | S | 2,087 | $538.34 | $1,123,516 | 1,713 Indirect | -54.92% | Disposed | 143.2% (price as of 2026-08-20) |
| Dec. 12, 2022 | MPWR | S 10b5-1 | 338 | $390.43 | $131,965 | 42,938 Indirect | -0.78% | Disposed | 235.4% (price as of 2026-08-20) |
| Dec. 12, 2022 | MPWR | S 10b5-1 | 4,747 | $389.31 | $1,848,055 | 43,276 Indirect | -9.88% | Disposed | 236.4% (price as of 2026-08-20) |
| Dec. 12, 2022 | MPWR | S 10b5-1 | 2,720 | $388.38 | $1,056,394 | 48,023 Indirect | -5.36% | Disposed | 237.2% (price as of 2026-08-20) |
| Dec. 12, 2022 | MPWR | S 10b5-1 | 4,951 | $387.07 | $1,916,384 | 50,743 Indirect | -8.89% | Disposed | 238.3% (price as of 2026-08-20) |
| Dec. 12, 2022 | MPWR | S 10b5-1 | 18,538 | $386.19 | $7,159,190 | 55,694 Indirect | -24.97% | Disposed | 239.1% (price as of 2026-08-20) |
| Dec. 12, 2022 | MPWR | S 10b5-1 | 5,196 | $385.00 | $2,000,460 | 74,232 Indirect | -6.54% | Disposed | 240.1% (price as of 2026-08-20) |
| Dec. 12, 2022 | MPWR | S 10b5-1 | 3,510 | $384.21 | $1,348,577 | 79,428 Indirect | -4.23% | Disposed | 240.8% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 28 | $401.24 | $11,235 | 82,938 Indirect | -0.03% | Disposed | 226.4% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 340 | $400.10 | $136,034 | 82,966 Indirect | -0.41% | Disposed | 227.3% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 1 | $398.13 | $398 | 83,306 Indirect | 0.00% | Disposed | 228.9% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 15 | $396.72 | $5,951 | 83,307 Indirect | -0.02% | Disposed | 230.1% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 46 | $393.81 | $18,115 | 83,322 Indirect | -0.06% | Disposed | 232.5% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 482 | $392.83 | $189,344 | 83,368 Indirect | -0.57% | Disposed | 233.3% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 557 | $391.83 | $218,249 | 83,850 Indirect | -0.66% | Disposed | 234.2% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 209 | $390.84 | $81,686 | 84,407 Indirect | -0.25% | Disposed | 235.0% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 276 | $389.72 | $107,563 | 84,616 Indirect | -0.33% | Disposed | 236.0% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 155 | $388.13 | $60,160 | 84,892 Indirect | -0.18% | Disposed | 237.4% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 203 | $387.54 | $78,671 | 85,047 Indirect | -0.24% | Disposed | 237.9% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 880 | $385.87 | $339,566 | 85,250 Indirect | -1.02% | Disposed | 239.4% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 1,748 | $384.76 | $672,560 | 86,130 Indirect | -1.99% | Disposed | 240.3% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 2,072 | $384.01 | $795,669 | 87,878 Indirect | -2.30% | Disposed | 241.0% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 1,862 | $382.85 | $712,867 | 89,950 Indirect | -2.03% | Disposed | 242.0% (price as of 2026-08-20) |
| Sept. 22, 2022 | MPWR | S 10b5-1 | 926 | $381.89 | $353,630 | 91,812 Indirect | -1.00% | Disposed | 242.9% (price as of 2026-08-20) |
| Nov. 12, 2021 | MPWR | S | 2,000 | $555.31 | $1,110,620 | 64,823 Indirect | -2.99% | Disposed | 135.8% (price as of 2026-08-20) |
| Aug. 6, 2021 | MPWR | S | 2,019 | $461.16 | $931,082 | 66,823 Indirect | -2.93% | Disposed | 184.0% (price as of 2026-08-20) |
| Aug. 6, 2021 | MPWR | S | 2,981 | $460.22 | $1,371,916 | 68,842 Indirect | -4.15% | Disposed | 184.5% (price as of 2026-08-20) |
| Aug. 6, 2021 | MPWR | S | 2,000 | $461.53 | $923,060 | 0 Indirect | -100.00% | Disposed | 183.7% (price as of 2026-08-20) |
| July 16, 2021 | MPWR | S 10b5-1 | 506 | $383.32 | $193,960 | 233,841 Direct | -0.22% | Disposed | 241.6% (price as of 2026-08-20) |
| July 16, 2021 | MPWR | S 10b5-1 | 1,425 | $382.57 | $545,162 | 234,347 Direct | -0.60% | Disposed | 242.3% (price as of 2026-08-20) |
| July 16, 2021 | MPWR | S 10b5-1 | 5,848 | $381.53 | $2,231,187 | 235,772 Direct | -2.42% | Disposed | 243.2% (price as of 2026-08-20) |
| July 16, 2021 | MPWR | S 10b5-1 | 3,551 | $380.82 | $1,352,292 | 241,620 Direct | -1.45% | Disposed | 243.9% (price as of 2026-08-20) |
| July 16, 2021 | MPWR | S 10b5-1 | 670 | $379.59 | $254,325 | 245,171 Direct | -0.27% | Disposed | 245.0% (price as of 2026-08-20) |
| June 11, 2021 | MPWR | S 10b5-1 | 1,478 | $344.77 | $509,570 | 245,841 Direct | -0.60% | Disposed | 279.8% (price as of 2026-08-20) |
| June 11, 2021 | MPWR | S 10b5-1 | 4,092 | $343.98 | $1,407,566 | 247,319 Direct | -1.63% | Disposed | 280.7% (price as of 2026-08-20) |
| June 11, 2021 | MPWR | S 10b5-1 | 4,465 | $343.18 | $1,532,299 | 251,411 Direct | -1.74% | Disposed | 281.6% (price as of 2026-08-20) |
| June 11, 2021 | MPWR | S 10b5-1 | 2,568 | $342.11 | $878,538 | 255,876 Direct | -0.99% | Disposed | 282.8% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 304 | $367.50 | $111,720 | 248,537 Direct | -0.12% | Disposed | 256.3% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 686 | $368.32 | $252,668 | 247,851 Direct | -0.28% | Disposed | 255.5% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,429 | $369.78 | $528,416 | 246,422 Direct | -0.58% | Disposed | 254.1% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,179 | $370.76 | $437,126 | 245,243 Direct | -0.48% | Disposed | 253.2% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,095 | $371.78 | $407,099 | 244,148 Direct | -0.45% | Disposed | 252.2% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,607 | $373.01 | $599,427 | 242,541 Direct | -0.66% | Disposed | 251.1% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,273 | $373.92 | $476,000 | 241,268 Direct | -0.52% | Disposed | 250.2% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 2,299 | $374.93 | $861,964 | 238,969 Direct | -0.95% | Disposed | 249.3% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,015 | $376.18 | $381,823 | 237,954 Direct | -0.42% | Disposed | 248.1% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,380 | $377.19 | $520,522 | 236,574 Direct | -0.58% | Disposed | 247.2% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 1,083 | $378.33 | $409,731 | 235,491 Direct | -0.46% | Disposed | 246.1% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 856 | $379.16 | $324,561 | 234,635 Direct | -0.36% | Disposed | 245.4% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 694 | $380.61 | $264,143 | 233,941 Direct | -0.30% | Disposed | 244.0% (price as of 2026-08-20) |
| Feb. 9, 2021 | MPWR | S 10b5-1 | 100 | $381.79 | $38,179 | 233,841 Direct | -0.04% | Disposed | 243.0% (price as of 2026-08-20) |
| Dec. 8, 2020 | MPWR | S 10b5-1 | 586 | $318.53 | $186,659 | 262,722 Direct | -0.22% | Disposed | 311.1% (price as of 2026-08-20) |
| Dec. 8, 2020 | MPWR | S 10b5-1 | 7,158 | $319.62 | $2,287,840 | 255,564 Direct | -2.72% | Disposed | 309.7% (price as of 2026-08-20) |
| Dec. 8, 2020 | MPWR | S 10b5-1 | 3,362 | $320.33 | $1,076,949 | 252,202 Direct | -1.32% | Disposed | 308.8% (price as of 2026-08-20) |
| Dec. 8, 2020 | MPWR | S 10b5-1 | 870 | $321.32 | $279,548 | 251,332 Direct | -0.34% | Disposed | 307.5% (price as of 2026-08-20) |
| Dec. 8, 2020 | MPWR | S 10b5-1 | 951 | $322.73 | $306,916 | 250,381 Direct | -0.38% | Disposed | 305.8% (price as of 2026-08-20) |
| Dec. 8, 2020 | MPWR | S 10b5-1 | 896 | $324.06 | $290,358 | 249,485 Direct | -0.36% | Disposed | 304.1% (price as of 2026-08-20) |
| Dec. 8, 2020 | MPWR | S 10b5-1 | 1,177 | $324.72 | $382,195 | 248,308 Direct | -0.47% | Disposed | 303.3% (price as of 2026-08-20) |
| Nov. 13, 2020 | MPWR | S | 1,000 | $307.70 | $307,700 | 263,308 Direct | -0.38% | Disposed | 325.6% (price as of 2026-08-20) |
| Nov. 10, 2020 | MPWR | S 10b5-1 | 15,000 | $308.38 | $4,625,700 | 264,308 Direct | -5.37% | Disposed | 324.6% (price as of 2026-08-20) |
| Sept. 8, 2020 | MPWR | S 10b5-1 | 15,000 | $248.03 | $3,720,450 | 279,308 Direct | -5.10% | Disposed | 428.0% (price as of 2026-08-20) |
| Aug. 26, 2020 | MPWR | S | 10,000 | $268.83 | $2,688,300 | 294,308 Direct | -3.29% | Disposed | 387.1% (price as of 2026-08-20) |
| May 14, 2020 | MPWR | S | 10,000 | $195.34 | $1,953,400 | 304,308 Direct | -3.18% | Disposed | 570.4% (price as of 2026-08-20) |
| May 11, 2020 | MPWR | S 10b5-1 | 14,000 | $210.43 | $2,946,020 | 314,308 Direct | -4.26% | Disposed | 522.3% (price as of 2026-08-20) |
| April 13, 2020 | MPWR | S 10b5-1 | 14,000 | $170.74 | $2,390,360 | 328,308 Direct | -4.09% | Disposed | 666.9% (price as of 2026-08-20) |
| March 9, 2020 | MPWR | S 10b5-1 | 19,000 | $152.66 | $2,900,540 | 342,308 Direct | -5.26% | Disposed | 757.8% (price as of 2026-08-20) |
| Feb. 20, 2020 | MPWR | S | 10,000 | $184.38 | $1,843,800 | 361,308 Direct | -2.69% | Disposed | 610.2% (price as of 2026-08-20) |
| Jan. 13, 2020 | MPWR | S 10b5-1 | 19,000 | $179.11 | $3,403,090 | 370,260 Direct | -4.88% | Disposed | 631.1% (price as of 2026-08-20) |
| Dec. 2, 2019 | MPWR | S 10b5-1 | 19,000 | $158.58 | $3,013,020 | 389,260 Direct | -4.65% | Disposed | 725.8% (price as of 2026-08-20) |
| Nov. 13, 2019 | MPWR | S 10b5-1 | 10,000 | $160.31 | $1,603,100 | 408,260 Direct | -2.39% | Disposed | 716.8% (price as of 2026-08-20) |
| Oct. 7, 2019 | MPWR | S 10b5-1 | 19,000 | $150.72 | $2,863,680 | 418,260 Direct | -4.35% | Disposed | 768.8% (price as of 2026-08-20) |
| Sept. 19, 2019 | MPWR | S 10b5-1 | 20,000 | $158.02 | $3,160,400 | 437,260 Direct | -4.37% | Disposed | 728.7% (price as of 2026-08-20) |
| Aug. 15, 2019 | MPWR | S | 10,000 | $145.52 | $1,455,200 | 457,260 Direct | -2.14% | Disposed | 799.9% (price as of 2026-08-20) |
| July 15, 2019 | MPWR | S 10b5-1 | 20,000 | $143.53 | $2,870,600 | 467,260 Direct | -4.10% | Disposed | 812.3% (price as of 2026-08-20) |
| May 30, 2019 | MPWR | S | 10,000 | $118.31 | $1,183,100 | 487,260 Direct | -2.01% | Disposed | 1006.8% (price as of 2026-08-20) |
| May 13, 2019 | MPWR | S 10b5-1 | 15,000 | $129.18 | $1,937,700 | 497,260 Direct | -2.93% | Disposed | 913.7% (price as of 2026-08-20) |
| March 11, 2019 | MPWR | S 10b5-1 | 15,000 | $137.01 | $2,055,150 | 527,260 Direct | -2.77% | Disposed | 855.8% (price as of 2026-08-20) |
| Feb. 21, 2019 | MPWR | S | 10,000 | $134.66 | $1,346,600 | 542,260 Direct | -1.81% | Disposed | 872.4% (price as of 2026-08-20) |
| Jan. 14, 2019 | MPWR | S 10b5-1 | 15,000 | $120.59 | $1,808,850 | 570,921 Direct | -2.56% | Disposed | 985.9% (price as of 2026-08-20) |
| Dec. 10, 2018 | MPWR | S 10b5-1 | 15,000 | $120.16 | $1,802,400 | 585,921 Direct | -2.50% | Disposed | 989.8% (price as of 2026-08-20) |
| Nov. 26, 2018 | MPWR | S | 10,000 | $126.18 | $1,261,800 | 600,921 Direct | -1.64% | Disposed | 937.8% (price as of 2026-08-20) |
| Oct. 8, 2018 | MPWR | S 10b5-1 | 15,000 | $116.55 | $1,748,250 | 611,815 Direct | -2.39% | Disposed | 1023.5% (price as of 2026-08-20) |
Showing latest 100 of 1865 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 |
|---|---|---|---|---|---|---|---|
| June 24, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (941) | $17.92 | Aug. 3, 2014 | 941 | Disposed |
| June 24, 2014 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | — | Aug. 3, 2014 | 20,000 | Disposed |
| Feb. 28, 2013 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (941) | $17.92 | Aug. 3, 2014 | 941 | Acquired |
| March 8, 2011 | MPWR | Incentive Stock Option (right to buy) | Common Stock | $7.77 | Jan. 26, 2015 | 12,000 | Disposed |
| March 8, 2011 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock | $5.00 | Jan. 13, 2014 | 99,999 | Disposed |
| Aug. 3, 2007 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (20,000) | $18.77 | Aug. 3, 2014 | 20,000 | Acquired |
| May 31, 2007 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (15,207) | $5.00 | Jan. 13, 2014 | 15,207 | Disposed |
| May 30, 2007 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (42,865) | $5.00 | Jan. 13, 2014 | 42,865 | Disposed |
| May 29, 2007 | MPWR | Non-Qualified Stock Option (right to buy) | Common Stock (41,929) | $5.00 | Jan. 13, 2014 | 41,929 | Disposed |
| Jan. 26, 2005 | MPWR | Stock Option (right to buy) | Common Stock (12,000) | $7.77 | Jan. 26, 2015 | 12,000 | Acquired |
| Nov. 24, 2004 | MPWR | Series A Convertible Preferred Stock | Common Stock (286,000) | — | Aug. 8, 1988 | 286,000 | Disposed |
| Nov. 24, 2004 | MPWR | Series B Convertible Preferred Stock | Common Stock (285,068) | — | Aug. 8, 1988 | 285,068 | Disposed |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
MPWR
CTO| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2007 | $175,385,149,875 | — | — | — | $7,250,049,063 | — | — | $411,086,452,089 |
| 2006 | $149,875 | — | — | $253,151 | $49,063 | — | — | $452,089 |
| 2005 | $143,500,147,462,123,504 | $572,162,870,013,276 | — | — | — | — | — | — |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.