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 ($) |
|---|---|---|---|---|---|
| 2019-02-04 | Hsing Michael (CEO) | Sale | 14,516 | 129.59 | 1,881,113 |
| 2019-02-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,623 | 129.59 | 469,500 |
| 2019-01-22 | Blegen Theodore (CFO) | Sale | 899 | 123.50 | 111,026 |
| 2019-01-14 | Moyer James C (Director) | Sale | 15,000 | 120.59 | 1,808,865 |
| 2018-12-10 | Moyer James C (Director) | Sale | 15,000 | 120.16 | 1,802,340 |
| 2018-12-03 | Hsing Michael (CEO) | Sale | 35,171 | 134.78 | 4,740,171 |
| 2018-11-26 | Moyer James C (Director) | Sale | 10,000 | 126.19 | 1,261,850 |
| 2018-11-16 | Tseng Saria (VP & General Counsel) | Sale | 5,641 | 126.45 | 713,304 |
| 2018-11-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 5,808 | 121.73 | 707,013 |
| 2018-11-05 | Tseng Saria (VP & General Counsel) | Sale | 4,819 | 121.73 | 586,626 |
| 2018-11-05 | Hsing Michael (CEO) | Sale | 15,867 | 121.73 | 1,931,505 |
| 2018-11-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,819 | 121.73 | 586,626 |
| 2018-10-25 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Option Ex | 27,960 | .00 | 0 |
| 2018-10-25 | Tseng Saria (VP & General Counsel) | Option Ex | 27,960 | .00 | 0 |
| 2018-10-25 | Hsing Michael (CEO) | Option Ex | 51,265 | .00 | 0 |
| 2018-10-25 | Xiao Deming (Pres. of MPS Asia Operations) | Option Ex | 27,960 | .00 | 0 |
| 2018-10-22 | Blegen Theodore (CFO) | Sale | 1,088 | 114.61 | 124,695 |
| 2018-10-08 | Moyer James C (Director) | Sale | 15,000 | 116.55 | 1,748,250 |
| 2018-10-01 | Hsing Michael (CEO) | Sale | 15,870 | 126.18 | 2,002,492 |
| 2018-09-10 | Moyer James C (Director) | Sale | 15,000 | 146.27 | 2,194,005 |
| 2018-09-04 | Hsing Michael (CEO) | Sale | 25,332 | 150.36 | 3,808,944 |
| 2018-08-31 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 10,000 | 148.55 | 1,485,500 |
| 2018-08-27 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,334 | 150.00 | 500,106 |
| 2018-08-23 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 5,497 | 145.74 | 801,121 |
| 2018-08-21 | Tseng Saria (VP & General Counsel) | Sale | 5,795 | 143.01 | 828,748 |
| 2018-08-20 | Blegen Theodore (CFO) | Sale | 50 | 141.00 | 7,050 |
| 2018-08-17 | Blegen Theodore (CFO) | Sale | 131 | 139.56 | 18,282 |
| 2018-08-14 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 10,737 | 141.00 | 1,513,884 |
| 2018-08-14 | Hsing Michael (CEO) | Sale | 17,634 | 141.05 | 2,487,205 |
| 2018-08-10 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 11,081 | 138.93 | 1,539,450 |
| 2018-08-06 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,154 | 135.99 | 292,928 |
| 2018-08-06 | Tseng Saria (VP & General Counsel) | Sale | 1,710 | 135.99 | 232,548 |
| 2018-08-06 | Hsing Michael (CEO) | Sale | 5,629 | 135.99 | 765,504 |
| 2018-08-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,710 | 135.99 | 232,548 |
| 2018-08-03 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 3,564 | 135.46 | 482,761 |
| 2018-08-03 | Tseng Saria (VP & General Counsel) | Sale | 3,019 | 135.46 | 408,938 |
| 2018-08-03 | Hsing Michael (CEO) | Sale | 9,943 | 135.46 | 1,346,829 |
| 2018-08-03 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,019 | 135.46 | 408,938 |
| 2018-07-09 | Moyer James C (Director) | Sale | 15,000 | 137.31 | 2,059,650 |
| 2018-07-02 | Hsing Michael (CEO) | Sale | 20,000 | 132.97 | 2,659,500 |
| 2018-06-01 | Hsing Michael (CEO) | Sale | 20,000 | 133.05 | 2,660,940 |
| 2018-05-29 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 6,900 | 131.38 | 906,501 |
| 2018-05-22 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 6,161 | 130.10 | 801,546 |
| 2018-05-21 | Tseng Saria (VP & General Counsel) | Sale | 5,070 | 130.74 | 662,846 |
| 2018-05-18 | Blegen Theodore (CFO) | Sale | 50 | 128.96 | 6,448 |
| 2018-05-18 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 3,000 | 129.23 | 387,687 |
| 2018-05-18 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,816 | 130.00 | 626,080 |
| 2018-05-17 | Blegen Theodore (CFO) | Sale | 130 | 127.37 | 16,558 |
| 2018-05-14 | Hsing Michael (CEO) | Sale | 17,633 | 126.75 | 2,235,053 |
| 2018-05-07 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,600 | 125.00 | 200,000 |
| 2018-05-07 | Moyer James C (Director) | Sale | 10,000 | 124.89 | 1,248,900 |
| 2018-05-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,153 | 122.66 | 264,093 |
| 2018-05-04 | Tseng Saria (VP & General Counsel) | Sale | 2,136 | 122.66 | 262,008 |
| 2018-05-04 | Hsing Michael (CEO) | Sale | 6,916 | 122.66 | 848,337 |
| 2018-05-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,101 | 122.66 | 257,714 |
| 2018-05-03 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 3,632 | 118.43 | 430,141 |
| 2018-05-03 | Tseng Saria (VP & General Counsel) | Sale | 3,600 | 118.43 | 426,351 |
| 2018-05-03 | Hsing Michael (CEO) | Sale | 11,665 | 118.43 | 1,381,497 |
| 2018-05-03 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,542 | 118.43 | 419,482 |
| 2018-04-30 | Blegen Theodore (CFO) | Sale | 232 | 120.55 | 27,967 |
| 2018-04-18 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,400 | 125.02 | 175,022 |
| 2018-04-09 | Moyer James C (Director) | Sale | 15,000 | 113.41 | 1,701,105 |
| 2018-04-02 | Hsing Michael (CEO) | Sale | 20,000 | 111.90 | 2,238,000 |
| 2018-03-19 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,419 | 122.51 | 541,362 |
| 2018-03-05 | Moyer James C (Director) | Sale | 15,000 | 118.10 | 1,771,470 |
| 2018-03-01 | Blegen Theodore (CFO) | Sale | 460 | 117.18 | 53,902 |
| 2018-02-22 | Tseng Saria (VP & General Counsel) | Sale | 26,429 | 117.34 | 3,101,178 |
| 2018-02-21 | Moyer James C (Director) | Sale | 10,000 | 118.77 | 1,187,700 |
| 2018-02-20 | Blegen Theodore (CFO) | Sale | 1,287 | 117.67 | 151,440 |
| 2018-02-14 | Hsing Michael (CEO) | Sale | 20,429 | 111.15 | 2,270,683 |
| 2018-02-13 | Blegen Theodore (CFO) | Sale | 7,261 | 108.10 | 784,935 |
| 2018-02-12 | Blegen Theodore (CFO) | Sale | 7,564 | 108.19 | 818,379 |
| 2018-02-12 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 29,497 | 108.19 | 3,191,398 |
| 2018-02-12 | Tseng Saria (VP & General Counsel) | Sale | 29,497 | 108.19 | 3,191,398 |
| 2018-02-12 | Hsing Michael (CEO) | Sale | 96,181 | 108.19 | 10,406,207 |
| 2018-02-12 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 29,203 | 108.19 | 3,159,589 |
| 2018-02-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 4,057 | 113.85 | 461,905 |
| 2018-02-05 | Tseng Saria (VP & General Counsel) | Sale | 4,057 | 113.85 | 461,905 |
| 2018-02-05 | Hsing Michael (CEO) | Sale | 17,354 | 113.85 | 1,975,822 |
| 2018-02-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,382 | 113.85 | 498,908 |
| 2018-01-30 | Blegen Theodore (CFO) | Sale | 450 | 120.66 | 54,297 |
| 2018-01-16 | Moyer James C (Director) | Sale | 15,000 | 122.36 | 1,835,475 |
| 2017-12-18 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,693 | 114.66 | 194,119 |
| 2017-12-11 | Moyer James C (Director) | Sale | 15,000 | 113.70 | 1,705,530 |
| 2017-12-01 | Blegen Theodore (CFO) | Sale | 459 | 117.91 | 54,120 |
| 2017-11-21 | Tseng Saria (VP & General Counsel) | Sale | 4,998 | 125.61 | 627,823 |
| 2017-11-20 | Blegen Theodore (CFO) | Sale | 79 | 122.75 | 9,697 |
| 2017-11-20 | Moyer James C (Director) | Sale | 10,000 | 123.76 | 1,237,580 |
| 2017-11-16 | Blegen Theodore (CFO) | Sale | 110 | 121.83 | 13,400 |
| 2017-11-14 | Hsing Michael (CEO) | Sale | 18,817 | 119.63 | 2,251,058 |
| 2017-11-06 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 5,607 | 123.06 | 690,014 |
| 2017-11-06 | Tseng Saria (VP & General Counsel) | Sale | 5,607 | 123.06 | 690,014 |
| 2017-11-06 | Hsing Michael (CEO) | Sale | 19,765 | 123.06 | 2,432,340 |
| 2017-11-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 6,004 | 123.06 | 738,870 |
| 2017-10-30 | Blegen Theodore (CFO) | Sale | 462 | 120.68 | 55,754 |
| 2017-10-09 | Moyer James C (Director) | Sale | 15,000 | 108.41 | 1,626,075 |
| 2017-09-18 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,693 | 104.09 | 176,224 |
| 2017-09-12 | Moyer James C (Director) | Sale | 15,000 | 105.20 | 1,577,970 |
| 2017-09-01 | Blegen Theodore (CFO) | Sale | 459 | 101.42 | 46,551 |
| 2017-09-01 | Moyer James C (Director) | Sale | 2,000 | 102.25 | 204,506 |
| 2017-08-22 | Tseng Saria (VP & General Counsel) | Sale | 4,996 | 96.50 | 482,138 |
| 2017-08-18 | Blegen Theodore (CFO) | Sale | 89 | 97.59 | 8,685 |
| 2017-08-17 | Blegen Theodore (CFO) | Sale | 99 | 100.85 | 9,984 |
| 2017-08-14 | Hsing Michael (CEO) | Sale | 18,817 | 101.94 | 1,918,242 |
| 2017-08-07 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,983 | 102.19 | 304,823 |
| 2017-08-07 | Tseng Saria (VP & General Counsel) | Sale | 2,983 | 102.19 | 304,823 |
| 2017-08-07 | Hsing Michael (CEO) | Sale | 11,132 | 102.19 | 1,137,545 |
| 2017-08-07 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,381 | 102.19 | 345,494 |
| 2017-08-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,623 | 101.66 | 266,662 |
| 2017-08-04 | Tseng Saria (VP & General Counsel) | Sale | 2,623 | 101.66 | 266,662 |
| 2017-08-04 | Hsing Michael (CEO) | Sale | 8,634 | 101.66 | 877,758 |
| 2017-08-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,623 | 101.66 | 266,662 |
| 2017-08-01 | Moyer James C (Director) | Sale | 12,000 | 103.10 | 1,237,236 |
| 2017-07-31 | Blegen Theodore (CFO) | Sale | 462 | 102.60 | 47,401 |
| 2017-07-27 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 10,828 | 101.60 | 1,100,124 |
| 2017-07-10 | Moyer James C (Director) | Sale | 15,000 | 97.64 | 1,464,675 |
| 2017-07-03 | Moyer James C (Director) | Sale | 2,000 | 95.41 | 190,824 |
| 2017-06-26 | Blegen Theodore (CFO) | Sale | 4,604 | 99.00 | 455,796 |
| 2017-06-12 | Moyer James C (Director) | Sale | 15,000 | 96.84 | 1,452,660 |
| 2017-06-01 | Moyer James C (Director) | Sale | 2,000 | 98.27 | 196,534 |
| 2017-05-24 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 30 | 95.44 | 2,863 |
| 2017-05-22 | Tseng Saria (VP & General Counsel) | Sale | 4,996 | 95.37 | 476,473 |
| 2017-05-18 | Blegen Theodore (CFO) | Sale | 11 | 92.61 | 1,018 |
| 2017-05-18 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 5,352 | 93.64 | 501,139 |
| 2017-05-17 | Blegen Theodore (CFO) | Sale | 99 | 96.75 | 9,578 |
| 2017-05-15 | Hsing Michael (CEO) | Sale | 18,815 | 96.13 | 1,808,723 |
| 2017-05-08 | Moyer James C (Director) | Sale | 10,000 | 92.47 | 924,700 |
| 2017-05-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,983 | 92.55 | 276,088 |
| 2017-05-05 | Tseng Saria (VP & General Counsel) | Sale | 2,983 | 92.55 | 276,088 |
| 2017-05-05 | Hsing Michael (CEO) | Sale | 11,131 | 92.55 | 1,030,218 |
| 2017-05-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,380 | 92.55 | 312,832 |
| 2017-05-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,623 | 91.89 | 241,035 |
| 2017-05-04 | Tseng Saria (VP & General Counsel) | Sale | 2,623 | 91.89 | 241,035 |
| 2017-05-04 | Hsing Michael (CEO) | Sale | 8,634 | 91.89 | 793,404 |
| 2017-05-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,623 | 91.89 | 241,035 |
| 2017-05-01 | Blegen Theodore (CFO) | Sale | 177 | 91.50 | 16,195 |
| 2017-05-01 | Moyer James C (Director) | Sale | 2,000 | 91.36 | 182,712 |
| 2017-04-24 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 12 | 94.99 | 1,139 |
| 2017-04-10 | Moyer James C (Director) | Sale | 15,000 | 91.45 | 1,371,735 |
| 2017-04-03 | Moyer James C (Director) | Sale | 2,000 | 91.61 | 183,216 |
| 2017-03-16 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 83 | 93.05 | 7,723 |
| 2017-03-06 | Moyer James C (Director) | Sale | 15,000 | 87.58 | 1,313,640 |
| 2017-03-01 | Blegen Theodore (CFO) | Sale | 284 | 88.75 | 25,205 |
| 2017-03-01 | Moyer James C (Director) | Sale | 2,000 | 88.84 | 177,688 |
| 2017-02-28 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 10,619 | 88.08 | 935,300 |
| 2017-02-24 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 60 | 87.48 | 5,248 |
| 2017-02-21 | Blegen Theodore (CFO) | Sale | 11 | 86.52 | 951 |
| 2017-02-21 | Tseng Saria (VP & General Counsel) | Sale | 23,464 | 87.19 | 2,045,896 |
| 2017-02-17 | Blegen Theodore (CFO) | Sale | 503 | 86.16 | 43,339 |
| 2017-02-14 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 13,622 | 85.20 | 1,160,553 |
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.