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 ($) |
|---|---|---|---|---|---|
| 2015-11-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,377 | 63.91 | 215,830 |
| 2015-11-06 | Lee Victor K (Director) | Sale | 10,000 | 64.02 | 640,180 |
| 2015-11-06 | Lee Victor K (Director) | Option Ex | 10,000 | 12.28 | 122,800 |
| 2015-11-05 | Rao Meera (CFO) | Sale | 587 | 62.69 | 36,799 |
| 2015-11-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 718 | 62.69 | 45,011 |
| 2015-11-05 | Tseng Saria (VP & General Counsel) | Sale | 718 | 62.69 | 45,011 |
| 2015-11-05 | Hsing Michael (CEO) | Sale | 2,679 | 62.69 | 167,946 |
| 2015-11-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 814 | 62.69 | 51,029 |
| 2015-11-05 | Lee Victor K (Director) | Sale | 10,000 | 63.22 | 632,170 |
| 2015-11-05 | Lee Victor K (Director) | Option Ex | 10,000 | 12.28 | 122,800 |
| 2015-11-04 | Rao Meera (CFO) | Sale | 282 | 62.70 | 17,681 |
| 2015-11-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 353 | 62.70 | 22,133 |
| 2015-11-04 | Tseng Saria (VP & General Counsel) | Sale | 353 | 62.70 | 22,133 |
| 2015-11-04 | Hsing Michael (CEO) | Sale | 1,162 | 62.70 | 72,857 |
| 2015-11-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 353 | 62.70 | 22,133 |
| 2015-11-02 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 109 | 62.35 | 6,796 |
| 2015-11-02 | Lee Victor K (Director) | Sale | 594 | 63.18 | 37,528 |
| 2015-11-02 | Lee Victor K (Director) | Option Ex | 594 | 12.28 | 7,294 |
| 2015-10-30 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 11,423 | 62.33 | 712,018 |
| 2015-10-30 | Lee Victor K (Director) | Sale | 3,000 | 62.50 | 187,500 |
| 2015-10-30 | Lee Victor K (Director) | Option Ex | 3,000 | 12.28 | 36,840 |
| 2015-10-23 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 11 | 58.20 | 640 |
| 2015-10-19 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,065 | 57.33 | 61,055 |
| 2015-10-16 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,500 | 57.25 | 85,876 |
| 2015-10-15 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 300 | 57.26 | 17,178 |
| 2015-10-14 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 8,325 | 56.11 | 467,099 |
| 2015-10-09 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,400 | 55.50 | 77,700 |
| 2015-10-08 | Rao Meera (CFO) | Sale | 1,643 | 55.28 | 90,820 |
| 2015-10-07 | Rao Meera (CFO) | Sale | 2,493 | 55.12 | 137,411 |
| 2015-10-06 | Tseng Saria (VP & General Counsel) | Sale | 8,284 | 54.08 | 447,973 |
| 2015-10-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 89 | 52.00 | 4,628 |
| 2015-09-16 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 72 | 51.44 | 3,703 |
| 2015-09-11 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 151 | 49.81 | 7,521 |
| 2015-08-24 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 15 | 44.28 | 664 |
| 2015-08-20 | Tseng Saria (VP & General Counsel) | Sale | 110 | 48.55 | 5,340 |
| 2015-08-10 | Rao Meera (CFO) | Sale | 1,319 | 51.30 | 67,664 |
| 2015-08-10 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,522 | 51.30 | 78,078 |
| 2015-08-10 | Tseng Saria (VP & General Counsel) | Sale | 1,522 | 51.30 | 78,078 |
| 2015-08-10 | Hsing Michael (CEO) | Sale | 4,530 | 51.30 | 232,389 |
| 2015-08-10 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,939 | 51.30 | 99,470 |
| 2015-08-06 | Rao Meera (CFO) | Sale | 2,438 | 50.48 | 123,067 |
| 2015-08-06 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,988 | 50.48 | 150,831 |
| 2015-08-06 | Tseng Saria (VP & General Counsel) | Sale | 2,988 | 50.48 | 150,831 |
| 2015-08-06 | Hsing Michael (CEO) | Sale | 8,818 | 50.48 | 445,123 |
| 2015-08-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,386 | 50.48 | 170,921 |
| 2015-08-05 | Rao Meera (CFO) | Sale | 587 | 50.38 | 29,573 |
| 2015-08-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 718 | 50.38 | 36,172 |
| 2015-08-05 | Tseng Saria (VP & General Counsel) | Sale | 718 | 50.38 | 36,172 |
| 2015-08-05 | Hsing Michael (CEO) | Sale | 2,679 | 50.38 | 134,968 |
| 2015-08-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 814 | 50.38 | 41,009 |
| 2015-08-04 | Rao Meera (CFO) | Sale | 283 | 50.96 | 14,421 |
| 2015-08-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 354 | 50.96 | 18,039 |
| 2015-08-04 | Tseng Saria (VP & General Counsel) | Sale | 354 | 50.96 | 18,039 |
| 2015-08-04 | Hsing Michael (CEO) | Sale | 1,162 | 50.96 | 59,215 |
| 2015-08-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 354 | 50.96 | 18,039 |
| 2015-08-03 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 107 | 51.50 | 5,510 |
| 2015-07-23 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 11 | 47.51 | 522 |
| 2015-07-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 82 | 51.01 | 4,182 |
| 2015-06-16 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 70 | 53.26 | 3,728 |
| 2015-06-11 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Option Ex | 8,234 | 11.96 | 98,519 |
| 2015-06-11 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 392 | 53.18 | 20,846 |
| 2015-05-26 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 14 | 53.85 | 753 |
| 2015-05-18 | Rao Meera (CFO) | Sale | 4,142 | 54.23 | 224,628 |
| 2015-05-18 | Lee Victor K (Director) | Sale | 2,705 | 53.75 | 145,393 |
| 2015-05-18 | Lee Victor K (Director) | Option Ex | 2,705 | 22.53 | 60,943 |
| 2015-05-15 | Moyer James C (Director) | Sale | 4,000 | 52.77 | 211,064 |
| 2015-05-14 | Moyer James C (Director) | Sale | 4,000 | 52.74 | 210,980 |
| 2015-05-14 | Lee Victor K (Director) | Sale | 3,000 | 52.90 | 158,700 |
| 2015-05-14 | Lee Victor K (Director) | Option Ex | 3,000 | 23.05 | 69,150 |
| 2015-05-12 | Tseng Saria (VP & General Counsel) | Sale | 2,967 | 51.92 | 154,040 |
| 2015-05-11 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,757 | 52.41 | 92,080 |
| 2015-05-08 | Rao Meera (CFO) | Sale | 1,319 | 51.79 | 68,311 |
| 2015-05-08 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,523 | 51.79 | 78,876 |
| 2015-05-08 | Tseng Saria (VP & General Counsel) | Sale | 1,523 | 51.79 | 78,876 |
| 2015-05-08 | Hsing Michael (CEO) | Sale | 4,530 | 51.79 | 234,608 |
| 2015-05-08 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,684 | 52.03 | 191,689 |
| 2015-05-07 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 4,779 | 51.88 | 247,915 |
| 2015-05-06 | Rao Meera (CFO) | Sale | 2,431 | 51.36 | 124,853 |
| 2015-05-06 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 2,980 | 51.36 | 153,049 |
| 2015-05-06 | Tseng Saria (VP & General Counsel) | Sale | 2,980 | 51.36 | 153,049 |
| 2015-05-06 | Hsing Michael (CEO) | Sale | 8,791 | 51.36 | 451,496 |
| 2015-05-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 3,377 | 51.36 | 173,439 |
| 2015-05-05 | Rao Meera (CFO) | Sale | 587 | 52.54 | 30,840 |
| 2015-05-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 718 | 52.54 | 37,723 |
| 2015-05-05 | Tseng Saria (VP & General Counsel) | Sale | 718 | 52.54 | 37,723 |
| 2015-05-05 | Hsing Michael (CEO) | Sale | 2,679 | 52.54 | 140,754 |
| 2015-05-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,544 | 52.54 | 81,121 |
| 2015-05-04 | Rao Meera (CFO) | Sale | 282 | 52.70 | 14,861 |
| 2015-05-04 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 353 | 52.70 | 18,603 |
| 2015-05-04 | Tseng Saria (VP & General Counsel) | Sale | 353 | 52.70 | 18,603 |
| 2015-05-04 | Hsing Michael (CEO) | Sale | 1,162 | 52.70 | 61,237 |
| 2015-05-04 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,530 | 52.73 | 133,394 |
| 2015-04-23 | Rao Meera (CFO) | Sale | 19,773 | 53.18 | 1,051,449 |
| 2015-04-23 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 12 | 54.43 | 653 |
| 2015-04-21 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 27,058 | 54.00 | 1,461,132 |
| 2015-04-14 | Moyer James C (Director) | Sale | 4,600 | 51.53 | 237,060 |
| 2015-04-13 | Moyer James C (Director) | Sale | 4,600 | 52.12 | 239,729 |
| 2015-04-09 | Hsing Michael (CEO) | Sale | 7,025 | 52.01 | 365,377 |
| 2015-04-09 | Hsing Michael (CEO) | Option Ex | 10,507 | 15.03 | 157,920 |
| 2015-04-08 | Hsing Michael (CEO) | Sale | 3,651 | 52.01 | 189,884 |
| 2015-04-08 | Hsing Michael (CEO) | Option Ex | 5,462 | 15.03 | 82,093 |
| 2015-04-07 | Hsing Michael (CEO) | Sale | 32,310 | 52.07 | 1,682,381 |
| 2015-04-07 | Hsing Michael (CEO) | Option Ex | 48,332 | 15.03 | 726,429 |
| 2015-04-06 | Hsing Michael (CEO) | Sale | 36,443 | 52.00 | 1,895,036 |
| 2015-04-06 | Hsing Michael (CEO) | Option Ex | 54,515 | 15.03 | 819,360 |
| 2015-04-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 97 | 51.28 | 4,974 |
| 2015-04-02 | Hsing Michael (CEO) | Sale | 71,550 | 52.00 | 3,720,743 |
| 2015-04-02 | Hsing Michael (CEO) | Option Ex | 107,030 | 15.03 | 1,608,660 |
| 2015-04-01 | Hsing Michael (CEO) | Sale | 59,010 | 52.01 | 3,068,992 |
| 2015-04-01 | Hsing Michael (CEO) | Option Ex | 88,271 | 15.03 | 1,326,713 |
| 2015-03-30 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 10,696 | 52.98 | 566,652 |
| 2015-03-20 | Moyer James C (Director) | Sale | 4,600 | 55.59 | 255,732 |
| 2015-03-19 | Moyer James C (Director) | Sale | 4,600 | 54.77 | 251,955 |
| 2015-03-18 | Rao Meera (CFO) | Option Ex | 36,000 | .00 | 0 |
| 2015-03-18 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Option Ex | 43,200 | .00 | 0 |
| 2015-03-18 | Tseng Saria (VP & General Counsel) | Option Ex | 43,200 | .00 | 0 |
| 2015-03-18 | Hsing Michael (CEO) | Option Ex | 110,000 | .00 | 0 |
| 2015-03-18 | Xiao Deming (Pres. of MPS Asia Operations) | Option Ex | 43,200 | .00 | 0 |
| 2015-03-16 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 259 | 53.16 | 13,768 |
| 2015-02-24 | Lee Victor K (Director) | Sale | 5,000 | 52.50 | 262,500 |
| 2015-02-24 | Lee Victor K (Director) | Option Ex | 5,000 | 23.05 | 115,250 |
| 2015-02-20 | Moyer James C (Director) | Sale | 4,600 | 51.49 | 236,858 |
| 2015-02-19 | Tseng Saria (VP & General Counsel) | Sale | 28,441 | 50.94 | 1,448,841 |
| 2015-02-19 | Moyer James C (Director) | Sale | 4,600 | 50.59 | 232,714 |
| 2015-02-19 | Smith- Pilkington Karen A (Director) | Sale | 15,705 | 50.96 | 800,295 |
| 2015-02-19 | Smith- Pilkington Karen A (Director) | Option Ex | 15,705 | 22.53 | 353,833 |
| 2015-02-13 | Lee Victor K (Director) | Sale | 5,000 | 50.25 | 251,250 |
| 2015-02-13 | Lee Victor K (Director) | Option Ex | 5,000 | 23.05 | 115,250 |
| 2015-02-10 | Rao Meera (CFO) | Sale | 1,182 | 47.87 | 56,582 |
| 2015-02-09 | Rao Meera (CFO) | Sale | 4,678 | 47.54 | 222,373 |
| 2015-02-09 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,535 | 47.56 | 73,003 |
| 2015-02-09 | Tseng Saria (VP & General Counsel) | Sale | 1,535 | 47.56 | 73,003 |
| 2015-02-09 | Hsing Michael (CEO) | Sale | 4,569 | 47.56 | 217,287 |
| 2015-02-09 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 1,956 | 47.56 | 93,021 |
| 2015-02-06 | Rao Meera (CFO) | Sale | 570 | 47.39 | 27,012 |
| 2015-02-06 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 699 | 47.39 | 33,125 |
| 2015-02-06 | Tseng Saria (VP & General Counsel) | Sale | 1,343 | 47.71 | 64,071 |
| 2015-02-06 | Hsing Michael (CEO) | Sale | 2,060 | 47.39 | 97,623 |
| 2015-02-06 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 792 | 47.39 | 37,532 |
| 2015-02-05 | Rao Meera (CFO) | Sale | 17,598 | 47.87 | 842,416 |
| 2015-02-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 22,042 | 47.87 | 1,055,150 |
| 2015-02-05 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Option Ex | 1,103 | 14.89 | 16,423 |
| 2015-02-05 | Tseng Saria (VP & General Counsel) | Sale | 21,941 | 47.87 | 1,050,315 |
| 2015-02-05 | Hsing Michael (CEO) | Sale | 72,959 | 47.95 | 3,492,951 |
| 2015-02-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 24,863 | 47.87 | 1,190,191 |
| 2015-02-03 | Rao Meera (CFO) | Sale | 1,555 | 47.21 | 73,411 |
| 2015-02-03 | Rao Meera (CFO) | Option Ex | 36,000 | .00 | 0 |
| 2015-02-03 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Sale | 1,306 | 47.21 | 61,656 |
| 2015-02-03 | Sciammas Maurice (Sr. V.P.of Sales and Marketing) | Option Ex | 43,200 | .00 | 0 |
| 2015-02-03 | Tseng Saria (VP & General Counsel) | Sale | 1,064 | 47.21 | 50,231 |
| 2015-02-03 | Tseng Saria (VP & General Counsel) | Option Ex | 43,200 | .00 | 0 |
| 2015-02-03 | Hsing Michael (CEO) | Option Ex | 110,000 | .00 | 0 |
| 2015-02-03 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 2,243 | 47.21 | 105,892 |
| 2015-02-03 | Xiao Deming (Pres. of MPS Asia Operations) | Option Ex | 43,200 | .00 | 0 |
| 2015-01-26 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 12 | 47.82 | 573 |
| 2015-01-09 | Moyer James C (Director) | Sale | 4,600 | 48.16 | 221,545 |
| 2015-01-08 | Moyer James C (Director) | Sale | 4,600 | 47.90 | 220,353 |
| 2015-01-05 | Xiao Deming (Pres. of MPS Asia Operations) | Sale | 97 | 48.18 | 4,673 |
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.