Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Monolithic Power Systems Inc (MPWR) since 2015 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Monolithic Power Systems Inc. (See page 1 of this report.) Table 2 shows the detailed insider transactions. This company's CIK number is 1280452.
Total stock buying since 2015: $0.
Total stock sales since 2015: $1,541,312,123.
Total stock option exercises since 2015: $6,394,532.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 0 | $0 | 122,186 | $92,988,547 | 0 | $0 |
| 2024 | 0 | $0 | 419,818 | $288,389,396 | 0 | $0 |
| 2023 | 0 | $0 | 321,405 | $161,588,961 | 0 | $0 |
| 2022 | 0 | $0 | 287,103 | $120,189,634 | 0 | $0 |
| 2021 | 0 | $0 | 671,463 | $261,651,283 | 213,100 | $0 |
| 2020 | 0 | $0 | 1,099,287 | $230,797,454 | 120,000 | $0 |
| 2019 | 0 | $0 | 987,406 | $140,497,489 | 291,797 | $0 |
| 2018 | 0 | $0 | 769,686 | $94,381,540 | 135,145 | $0 |
| 2017 | 0 | $0 | 658,153 | $63,373,609 | 23,567 | $0 |
| 2016 | 0 | $0 | 694,815 | $45,309,554 | 96,877 | $522,549 |
| 2015 | 0 | $0 | 798,236 | $42,144,656 | 1,207,840 | $5,871,983 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2023-05-03 | Tseng Saria (VP & General Counsel) | Sale | 3,462 | 463.55 | 1,604,810 |
| 2023-05-03 | Hsing Michael (CEO) | Sale | 11,242 | 463.55 | 5,211,229 |
| 2023-05-03 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,462 | 463.55 | 1,604,810 |
| 2023-04-03 | Blegen Theodore (CFO) | Sale | 920 | 487.99 | 448,950 |
| 2023-04-03 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,360 | 487.99 | 2,127,636 |
| 2023-04-03 | Tseng Saria (VP & General Counsel) | Sale | 4,360 | 487.99 | 2,127,636 |
| 2023-04-03 | Hsing Michael (CEO) | Sale | 11,100 | 487.99 | 5,416,689 |
| 2023-04-03 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,360 | 487.99 | 2,127,636 |
| 2023-02-16 | Blegen Theodore (CFO) | Sale | 5,000 | 521.19 | 2,605,950 |
| 2023-02-15 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 13,000 | 519.45 | 6,752,850 |
| 2023-02-15 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,497 | 530.00 | 793,410 |
| 2023-02-13 | Blegen Theodore (CFO) | Sale | 1,373 | 492.31 | 675,941 |
| 2023-02-13 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,639 | 492.31 | 806,896 |
| 2023-02-13 | Tseng Saria (VP & General Counsel) | Sale | 1,639 | 492.31 | 806,896 |
| 2023-02-13 | Hsing Michael (CEO) | Sale | 6,333 | 492.31 | 3,117,799 |
| 2023-02-13 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,639 | 492.31 | 806,896 |
| 2023-02-09 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,129 | 520.00 | 1,107,080 |
| 2023-02-08 | Blegen Theodore (CFO) | Sale | 5,684 | 462.41 | 2,628,338 |
| 2023-02-08 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 6,922 | 462.41 | 3,200,802 |
| 2023-02-08 | Tseng Saria (VP & General Counsel) | Sale | 6,922 | 462.41 | 3,200,802 |
| 2023-02-08 | Hsing Michael (CEO) | Sale | 22,483 | 462.41 | 10,396,364 |
| 2023-02-08 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 6,922 | 462.41 | 3,200,802 |
| 2023-02-06 | Blegen Theodore (CFO) | Sale | 608 | 446.87 | 271,696 |
| 2023-02-06 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 723 | 446.87 | 323,087 |
| 2023-02-06 | Tseng Saria (VP & General Counsel) | Sale | 723 | 446.88 | 323,094 |
| 2023-02-06 | Hsing Michael (CEO) | Sale | 3,691 | 446.88 | 1,649,434 |
| 2023-02-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 723 | 446.88 | 323,094 |
| 2022-12-12 | Moyer James C | Sale | 40,000 | 387.23 | 15,489,079 |
| 2022-11-22 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 5,200 | 369.27 | 1,920,204 |
| 2022-11-15 | Blegen Theodore (CFO) | Sale | 191 | 406.27 | 77,597 |
| 2022-11-15 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 279 | 405.51 | 113,137 |
| 2022-11-15 | Tseng Saria (VP & General Counsel) | Sale | 279 | 404.46 | 112,844 |
| 2022-11-15 | Hsing Michael (CEO) | Sale | 1,074 | 405.51 | 435,517 |
| 2022-11-15 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,377 | 408.68 | 971,432 |
| 2022-11-14 | Blegen Theodore (CFO) | Sale | 1,196 | 390.33 | 466,834 |
| 2022-11-14 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,385 | 390.33 | 540,607 |
| 2022-11-14 | Tseng Saria (VP & General Counsel) | Sale | 1,385 | 390.33 | 540,607 |
| 2022-11-14 | Hsing Michael (CEO) | Sale | 5,347 | 390.33 | 2,087,094 |
| 2022-11-14 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,385 | 390.33 | 540,607 |
| 2022-11-07 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,000 | 355.74 | 1,422,960 |
| 2022-11-04 | Blegen Theodore (CFO) | Sale | 847 | 343.98 | 291,351 |
| 2022-11-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 982 | 343.98 | 337,788 |
| 2022-11-04 | Tseng Saria (VP & General Counsel) | Sale | 982 | 343.98 | 337,788 |
| 2022-11-04 | Hsing Michael (CEO) | Sale | 3,790 | 343.98 | 1,303,684 |
| 2022-11-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 982 | 343.98 | 337,788 |
| 2022-09-22 | Moyer James C | Sale | 9,800 | 390.64 | 3,828,291 |
| 2022-08-12 | Blegen Theodore (CFO) | Sale | 1,369 | 525.95 | 720,025 |
| 2022-08-12 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,633 | 525.95 | 858,876 |
| 2022-08-12 | Tseng Saria (VP & General Counsel) | Sale | 1,633 | 525.95 | 858,876 |
| 2022-08-12 | Hsing Michael (CEO) | Sale | 6,306 | 525.95 | 3,316,640 |
| 2022-08-12 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,633 | 525.95 | 858,876 |
| 2022-08-11 | Zhou Jeff | Sale | 200 | 540.00 | 108,000 |
| 2022-08-04 | Blegen Theodore (CFO) | Sale | 848 | 522.38 | 442,978 |
| 2022-08-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 5,184 | 528.57 | 2,740,091 |
| 2022-08-04 | Tseng Saria (VP & General Counsel) | Sale | 984 | 522.39 | 514,031 |
| 2022-08-04 | Hsing Michael (CEO) | Sale | 3,798 | 522.39 | 1,984,037 |
| 2022-08-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 984 | 522.39 | 514,031 |
| 2022-08-03 | Zhou Jeff | Sale | 200 | 520.00 | 104,000 |
| 2022-07-01 | Blegen Theodore (CFO) | Sale | 950 | 361.58 | 343,501 |
| 2022-07-01 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,515 | 361.58 | 1,632,533 |
| 2022-07-01 | Tseng Saria (VP & General Counsel) | Sale | 4,515 | 361.58 | 1,632,533 |
| 2022-07-01 | Hsing Michael (CEO) | Sale | 11,495 | 361.57 | 4,156,247 |
| 2022-07-01 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,515 | 361.58 | 1,632,533 |
| 2022-05-27 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,495 | 457.00 | 683,215 |
| 2022-05-24 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,298 | 392.44 | 1,686,707 |
| 2022-05-12 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,679 | 388.10 | 651,619 |
| 2022-05-12 | Tseng Saria (VP & General Counsel) | Sale | 1,679 | 388.10 | 651,619 |
| 2022-05-12 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,679 | 388.10 | 651,619 |
| 2022-05-04 | Tseng Saria (VP & General Counsel) | Sale | 986 | 453.16 | 446,811 |
| 2022-05-04 | Hsing Michael (CEO) | Sale | 3,807 | 453.15 | 1,725,153 |
| 2022-04-01 | Blegen Theodore (CFO) | Sale | 930 | 467.22 | 434,514 |
| 2022-04-01 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,420 | 467.23 | 2,065,156 |
| 2022-04-01 | Tseng Saria (VP & General Counsel) | Sale | 4,420 | 467.23 | 2,065,156 |
| 2022-04-01 | Hsing Michael (CEO) | Sale | 11,250 | 467.23 | 5,256,337 |
| 2022-04-01 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,420 | 467.23 | 2,065,156 |
| 2022-02-22 | Blegen Theodore (CFO) | Sale | 1,539 | 454.04 | 698,773 |
| 2022-02-14 | Blegen Theodore (CFO) | Sale | 1,387 | 429.60 | 595,855 |
| 2022-02-14 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,663 | 429.60 | 714,424 |
| 2022-02-14 | Tseng Saria (VP & General Counsel) | Sale | 1,663 | 429.60 | 714,424 |
| 2022-02-14 | Hsing Michael (CEO) | Sale | 6,421 | 429.60 | 2,758,461 |
| 2022-02-14 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,663 | 429.60 | 714,424 |
| 2022-02-08 | Blegen Theodore (CFO) | Sale | 1,117 | 401.12 | 448,051 |
| 2022-02-08 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,700 | 401.12 | 681,904 |
| 2022-02-08 | Tseng Saria (VP & General Counsel) | Sale | 1,700 | 401.12 | 681,904 |
| 2022-02-08 | Hsing Michael (CEO) | Sale | 7,663 | 401.12 | 3,073,782 |
| 2022-02-08 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,700 | 401.12 | 681,904 |
| 2022-02-07 | Blegen Theodore (CFO) | Sale | 6,336 | 399.28 | 2,529,838 |
| 2022-02-07 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 8,144 | 399.28 | 3,251,736 |
| 2022-02-07 | Tseng Saria (VP & General Counsel) | Sale | 7,393 | 399.28 | 2,951,877 |
| 2022-02-07 | Hsing Michael (CEO) | Sale | 29,638 | 399.28 | 11,833,860 |
| 2022-02-07 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 7,393 | 399.28 | 2,951,877 |
| 2022-01-20 | Blegen Theodore (CFO) | Sale | 1,897 | 414.71 | 786,704 |
| 2022-01-03 | Blegen Theodore (CFO) | Sale | 905 | 490.87 | 444,237 |
| 2022-01-03 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,305 | 490.87 | 2,113,195 |
| 2022-01-03 | Tseng Saria (VP & General Counsel) | Sale | 4,305 | 490.87 | 2,113,195 |
| 2022-01-03 | Hsing Michael (CEO) | Sale | 10,960 | 490.87 | 5,379,935 |
| 2022-01-03 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,305 | 490.87 | 2,113,195 |
| 2021-12-20 | Blegen Theodore (CFO) | Sale | 1,897 | 474.35 | 899,841 |
| 2021-11-30 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,366 | 560.00 | 2,444,960 |
| 2021-11-22 | Blegen Theodore (CFO) | Sale | 1,897 | 568.15 | 1,077,780 |
| 2021-11-22 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 427 | 580.00 | 247,660 |
| 2021-11-12 | Blegen Theodore (CFO) | Sale | 1,364 | 553.42 | 754,862 |
| 2021-11-12 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,625 | 553.42 | 899,304 |
| 2021-11-12 | Tseng Saria (VP & General Counsel) | Sale | 1,625 | 553.42 | 899,304 |
| 2021-11-12 | Hsing Michael (CEO) | Sale | 6,273 | 553.42 | 3,471,591 |
| 2021-11-12 | Moyer James C | Sale | 2,000 | 555.31 | 1,110,620 |
| 2021-11-12 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,625 | 553.42 | 899,304 |
| 2021-11-08 | Blegen Theodore (CFO) | Sale | 1,460 | 548.27 | 800,474 |
| 2021-11-08 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,022 | 548.27 | 1,108,601 |
| 2021-11-08 | Hsing Michael (CEO) | Sale | 7,813 | 548.27 | 4,283,633 |
| 2021-11-08 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,022 | 548.27 | 1,108,601 |
| 2021-10-20 | Blegen Theodore (CFO) | Sale | 1,897 | 496.59 | 942,031 |
| 2021-10-01 | Blegen Theodore (CFO) | Sale | 910 | 476.16 | 433,305 |
| 2021-10-01 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,330 | 476.16 | 2,061,772 |
| 2021-10-01 | Tseng Saria (VP & General Counsel) | Sale | 4,330 | 476.16 | 2,061,772 |
| 2021-10-01 | Hsing Michael (CEO) | Sale | 11,020 | 476.16 | 5,247,283 |
| 2021-09-20 | Blegen Theodore (CFO) | Sale | 1,897 | 484.68 | 919,443 |
| 2021-08-30 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,886 | 500.00 | 2,443,000 |
| 2021-08-26 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 6,495 | 489.00 | 3,176,055 |
| 2021-08-24 | Zhou Jeff | Sale | 300 | 490.00 | 147,000 |
| 2021-08-20 | Zhou Jeff | Sale | 300 | 477.00 | 143,100 |
| 2021-08-20 | Blegen Theodore (CFO) | Sale | 1,897 | 469.24 | 890,148 |
| 2021-08-19 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,739 | 462.00 | 2,189,418 |
| 2021-08-12 | Blegen Theodore (CFO) | Sale | 1,379 | 457.10 | 630,340 |
| 2021-08-12 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,651 | 457.10 | 754,672 |
| 2021-08-12 | Tseng Saria (VP & General Counsel) | Sale | 1,651 | 457.10 | 754,672 |
| 2021-08-12 | Hsing Michael (CEO) | Sale | 6,373 | 457.10 | 2,913,098 |
| 2021-08-12 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,651 | 457.10 | 754,672 |
| 2021-08-09 | Blegen Theodore (CFO) | Sale | 1,474 | 459.12 | 676,742 |
| 2021-08-09 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,053 | 459.12 | 942,573 |
| 2021-08-09 | Tseng Saria (VP & General Counsel) | Sale | 2,053 | 459.12 | 942,573 |
| 2021-08-09 | Hsing Michael (CEO) | Sale | 7,926 | 459.12 | 3,638,985 |
| 2021-08-09 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,053 | 459.12 | 942,573 |
| 2021-08-06 | Moyer James C | Sale | 7,000 | 460.97 | 3,226,790 |
| 2021-08-04 | Zhou Jeff | Sale | 400 | 465.22 | 186,088 |
| 2021-08-02 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 6,495 | 455.90 | 2,961,057 |
| 2021-07-23 | Zhou Jeff | Sale | 500 | 410.00 | 205,000 |
| 2021-07-21 | Zhou Jeff | Sale | 1,000 | 402.51 | 402,510 |
| 2021-07-20 | Blegen Theodore (CFO) | Sale | 1,897 | 382.77 | 726,114 |
| 2021-07-16 | Moyer James C | Sale | 12,000 | 381.57 | 4,578,792 |
| 2021-07-14 | Zhou Jeff | Sale | 1,000 | 392.66 | 392,660 |
| 2021-07-07 | Zhou Jeff | Sale | 500 | 387.27 | 193,635 |
| 2021-07-06 | Zhou Jeff | Sale | 500 | 380.00 | 190,000 |
| 2021-07-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 7,734 | 380.00 | 2,938,920 |
| 2021-07-01 | Blegen Theodore (CFO) | Sale | 905 | 370.45 | 335,257 |
| 2021-07-01 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,305 | 370.45 | 1,594,787 |
| 2021-07-01 | Tseng Saria (VP & General Counsel) | Sale | 4,305 | 370.45 | 1,594,787 |
| 2021-07-01 | Hsing Michael (CEO) | Sale | 10,960 | 370.45 | 4,060,132 |
| 2021-07-01 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,305 | 370.45 | 1,594,787 |
| 2021-06-28 | Zhou Jeff | Sale | 1,500 | 370.88 | 556,324 |
Insider trading activities including stock purchases, stock sales, and option exercises of MPWR listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Monolithic Power Systems Inc (symbol MPWR, CIK number 1280452) see the Securities and Exchange Commission (SEC) website.