Insider Trading activities of Monolithic Power Systems Inc insiders.

Monthly summaries of insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Monolithic Power Systems Inc since 2005 are illustrated in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Monolithic Power Systems Inc since year 2005. Table 2 shows the detailed insider transactions of Monolithic Power Systems Inc since 2005. The reporting company's ticker symbol is MPWR. The reporting company's CIK number is 1280452.
The total value of stock buying since 2005 is $0.
The total value of stock sales since 2005 is $474,417,240.
The total value of stock option exercises since 2005 is $42,827,321.


Table 1. Monthly summaries of insider stock purchases, sales, and option exercises for Monolithic Power Systems Inc (MPWR).
Trading Period Insider Buying Insider Sales Option Exercises
year-month Shares Value Shares Value Shares Value
2018-05 0 $0 84,205 $10,474,741 0 $0
2018-04 0 $0 36,632 $4,142,094 0 $0
2018-03 0 $0 19,879 $2,366,734 0 $0
2018-02 0 $0 287,198 $31,661,447 0 $0
2018-01 0 $0 15,450 $1,889,772 0 $0
2017-12 0 $0 17,152 $1,953,769 0 $0
2017-11 0 $0 70,987 $8,690,796 0 $0
2017-10 0 $0 15,462 $1,681,829 0 $0
2017-09 0 $0 19,152 $2,005,251 0 $0
2017-08 0 $0 72,983 $7,426,714 0 $0
2017-07 0 $0 28,290 $2,803,024 0 $0
2017-06 0 $0 21,604 $2,104,990 0 $0
2017-05 0 $0 78,460 $7,335,136 0 $0
2017-04 0 $0 17,012 $1,556,090 0 $0
2017-03 0 $0 17,367 $1,524,256 0 $0
2017-02 0 $0 294,966 $25,881,950 23,567 $0
2017-01 0 $0 4,718 $409,804 0 $0
2016-12 0 $0 12,571 $1,007,035 0 $0
2016-11 0 $0 114,450 $9,138,100 6,819 $131,538
2016-10 0 $0 2,277 $180,783 70,701 $0
2016-09 0 $0 169 $12,892 0 $0
2016-08 0 $0 70,279 $5,137,090 0 $0
2016-07 0 $0 92 $6,234 0 $0
2016-06 0 $0 70 $4,790 0 $0
2016-05 0 $0 113,854 $7,181,730 19,357 $391,011
2016-04 0 $0 86,254 $5,529,310 0 $0
2016-03 0 $0 4,421 $280,408 0 $0
2016-02 0 $0 290,269 $16,824,540 0 $0
2016-01 0 $0 109 $6,642 0 $0
2015-12 0 $0 71 $4,562 275,600 $0
2015-11 0 $0 98,593 $6,335,854 23,176 $284,600
2015-10 0 $0 39,533 $2,289,898 3,000 $36,840
2015-09 0 $0 223 $11,224 0 $0
2015-08 0 $0 39,705 $2,013,613 0 $0
2015-07 0 $0 93 $4,704 0 $0
2015-06 0 $0 462 $24,574 8,234 $98,519
2015-05 0 $0 71,428 $3,728,658 5,705 $130,093
2015-04 0 $0 266,129 $13,917,410 314,117 $4,721,175
2015-03 0 $0 20,155 $1,088,107 275,600 $0
2015-02 0 $0 252,535 $12,278,908 302,408 $600,756
2015-01 0 $0 9,309 $447,144 0 $0
2014-12 0 $0 9,424 $464,289 0 $0
2014-11 0 $0 146,262 $6,633,361 88,529 $1,319,596
2014-10 0 $0 100 $4,361 275,600 $0
2014-09 0 $0 9,422 $444,215 0 $0
2014-08 0 $0 597,633 $27,061,746 0 $0
2014-07 0 $0 2,776 $118,707 278,282 $48,061
2014-06 0 $0 65,472 $2,713,235 197,234 $3,461,887
2014-05 0 $0 92,896 $3,460,612 0 $0
2014-04 0 $0 55,051 $2,052,808 0 $0
2014-03 0 $0 122,979 $4,722,314 45,000 $676,350
2014-02 0 $0 456,175 $15,538,827 106,541 $1,887,465
2014-01 0 $0 59,164 $2,008,473 0 $0
2013-12 0 $0 34,222 $1,124,316 0 $0
2013-11 0 $0 154,865 $5,012,453 20,000 $358,400
2013-10 0 $0 488,060 $15,390,841 209,964 $2,889,944
2013-09 0 $0 97,991 $2,988,430 63,767 $737,724
2013-08 0 $0 229,072 $6,447,029 81,910 $1,432,655
2013-07 0 $0 306,782 $7,864,860 173,753 $2,363,285
2013-06 0 $0 10,422 $251,211 0 $0
2013-05 0 $0 218,065 $5,293,474 151,718 $1,730,491
2013-04 0 $0 43,557 $984,955 35,895 $319,465
2013-03 0 $0 6,551 $158,812 0 $0
2013-02 0 $0 259,010 $6,188,746 129,471 $1,961,591
2013-01 0 $0 68,893 $1,594,271 14,367 $194,384
2012-12 0 $0 4,040 $87,909 500 $6,765
2012-11 0 $0 79,066 $1,560,998 36,000 $318,730
2012-10 0 $0 2,200 $42,737 0 $0
2012-09 0 $0 2,900 $59,534 500 $6,765
2012-08 0 $0 233,911 $5,068,671 173,830 $2,195,102
2012-07 0 $0 10,598 $217,457 0 $0
2012-06 0 $0 11,600 $224,802 0 $0
2012-05 0 $0 100,794 $2,169,727 19,981 $250,033
2012-04 0 $0 59,154 $1,233,942 55,894 $376,712
2012-03 0 $0 1,160 $21,858 0 $0
2012-02 0 $0 185,237 $3,426,107 80,985 $847,423
2012-01 0 $0 14,000 $218,330 14,000 $16,800
2011-12 0 $0 141 $2,016 0 $0
2011-11 0 $0 22,154 $264,342 0 $0
2011-09 0 $0 143 $1,770 0 $0
2011-08 0 $0 50,114 $615,992 13,000 $15,600
2011-07 0 $0 6,340 $90,903 0 $0
2011-06 0 $0 19,480 $287,069 13,000 $15,600
2011-05 0 $0 166,922 $2,794,429 0 $0
2011-04 0 $0 6,340 $92,568 0 $0
2011-03 0 $0 13,000 $184,288 348,997 $2,160,939
2011-02 0 $0 114,409 $1,709,407 259,774 $1,353,643
2010-12 0 $0 16,500 $305,299 16,500 $195,525
2010-11 0 $0 54,786 $876,933 0 $0
2010-09 0 $0 648 $11,093 0 $0
2010-08 0 $0 14,080 $243,871 0 $0
2010-07 0 $0 4,372 $80,832 4,000 $47,400
2010-06 0 $0 6,000 $117,854 6,000 $71,100
2010-05 0 $0 24,772 $571,455 10,693 $108,320
2010-04 0 $0 159,612 $3,855,841 135,700 $833,481
2010-03 0 $0 24,160 $547,565 94,500 $175,028
2010-02 0 $0 15,892 $326,784 0 $0
2010-01 0 $0 200 $4,456 0 $0
2009-12 0 $0 14,970 $357,866 10,650 $89,566
2009-11 0 $0 32,141 $703,465 32,000 $269,120
2009-10 0 $0 61,164 $1,321,793 60,000 $501,080
2009-09 0 $0 33,169 $770,893 31,729 $305,734
2009-08 0 $0 392,907 $9,112,828 36,000 $425,860
2009-07 0 $0 49,871 $1,138,284 49,871 $334,485
2009-06 0 $0 61,948 $1,294,609 55,000 $548,550
2009-05 0 $0 184,522 $3,614,582 113,560 $462,834
2008-09 0 $0 33,850 $710,282 8,000 $31,230
2008-08 0 $0 1,621,063 $42,581,323 137,429 $640,972
2008-07 0 $0 90,637 $2,122,757 63,000 $97,230
2008-06 0 $0 84,100 $2,031,522 15,000 $18,000
2008-05 0 $0 433,991 $10,561,746 101,833 $441,024
2008-04 0 $0 59,150 $1,227,473 5,000 $6,000
2008-03 0 $0 8,500 $153,080 0 $0
2008-02 0 $0 16,000 $264,480 0 $0
2008-01 0 $0 22,900 $477,095 0 $0
2007-12 0 $0 95,050 $2,036,831 0 $0
2007-11 0 $0 108,924 $2,225,631 62,224 $125,138
2007-10 0 $0 305,500 $7,496,894 163,500 $1,756,875
2007-09 0 $0 152,236 $3,586,367 17,500 $147,175
2007-08 0 $0 760,691 $15,219,106 79,403 $273,317
2007-05 0 $0 291,955 $4,988,694 175,001 $947,335
2007-04 0 $0 30,200 $394,099 0 $0
2007-03 0 $0 35,000 $457,955 0 $0
2007-02 0 $0 376,853 $4,991,406 430,000 $627,000
2007-01 0 $0 10,000 $122,382 0 $0
2006-06 0 $0 12,000 $176,159 0 $0
2006-05 0 $0 189,555 $3,285,588 10,000 $8,000
2005-11 0 $0 198,829 $2,832,231 0 $0
2005-10 0 $0 13,000 $144,494 0 $0
2005-09 0 $0 2,000 $17,006 0 $0
2005-08 0 $0 113,204 $796,527 0 $0

Table 2. Detailed insider stock purchases, sales, and option exercises of Monolithic Power Systems Inc insiders (MPWR)
  Trade Date   Insider Name Trade Type     Shares       Price ($)   Value ($)
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
2017-02-13 Hsing Michael (CEO) Sale 95,667 86.17 8,244,008
2017-02-10 Sciammas Maurice (Sr. V.P.of Sales and Marketing) Sale 18,201 89.29 1,625,240
2017-02-10 Tseng Saria (VP & General Counsel) Sale 18,201 89.29 1,625,240
2017-02-10 Hsing Michael (CEO) Sale 59,943 89.29 5,352,550
2017-02-10 Xiao Deming (Pres. of MPS Asia Operations) Sale 18,201 89.29 1,625,240
2017-02-07 Sciammas Maurice (Sr. V.P.of Sales and Marketing) Option Ex 4,876 .00 0
2017-02-07 Tseng Saria (VP & General Counsel) Option Ex 4,876 .00 0
2017-02-07 Hsing Michael (CEO) Option Ex 8,939 .00 0
2017-02-07 Xiao Deming (Pres. of MPS Asia Operations) Option Ex 4,876 .00 0
2017-02-06 Sciammas Maurice (Sr. V.P.of Sales and Marketing) Sale 4,722 88.25 416,735
2017-02-06 Tseng Saria (VP & General Counsel) Sale 4,723 88.25 416,823
2017-02-06 Hsing Michael (CEO) Sale 19,482 88.25 1,719,364
2017-02-06 Xiao Deming (Pres. of MPS Asia Operations) Sale 5,517 88.25 486,897
2017-02-01 Moyer James C (Director) Sale 2,000 87.97 175,942
2017-01-30 Blegen Theodore (CFO) Sale 206 89.00 18,334
2017-01-24 Moyer James C (Director) Sale 2,500 90.00 225,000
2017-01-23 Xiao Deming (Pres. of MPS Asia Operations) Sale 12 87.36 1,048
2017-01-03 Moyer James C (Director) Sale 2,000 82.71 165,422
2016-12-16 Xiao Deming (Pres. of MPS Asia Operations) Sale 71 84.59 6,005
2016-12-13 Moyer James C (Director) Sale 2,500 85.62 214,050
2016-12-01 Moyer James C (Director) Sale 6,000 78.70 472,188
2016-11-29 Blegen Theodore (CFO) Sale 185 83.78 15,499
2016-11-25 Xiao Deming (Pres. of MPS Asia Operations) Sale 25 83.89 2,097
2016-11-22 Lee Victor K (Director) Sale 4,504 83.74 377,146
2016-11-22 Lee Victor K (Director) Option Ex 4,504 19.29 86,882
2016-11-21 Tseng Saria (VP & General Counsel) Sale 5,633 83.56 470,676
2016-11-21 Lee Victor K (Director) Sale 1,200 83.52 100,224
2016-11-21 Lee Victor K (Director) Option Ex 1,200 19.29 23,148
2016-11-18 Blegen Theodore (CFO) Sale 11 81.66 898
2016-11-18 Lee Victor K (Director) Sale 1,115 82.05 91,489
2016-11-18 Lee Victor K (Director) Option Ex 1,115 19.29 21,508
2016-11-17 Blegen Theodore (CFO) Sale 40 81.27 3,250
2016-11-17 Hsing Michael (CEO) Sale 30,824 81.17 2,502,138
2016-11-09 Xiao Deming (Pres. of MPS Asia Operations) Sale 12,657 78.38 992,017
2016-11-07 Sciammas Maurice (Sr. V.P.of Sales and Marketing) Sale 5,963 77.88 464,416
2016-11-07 Tseng Saria (VP & General Counsel) Sale 5,963 77.88 464,416
2016-11-07 Hsing Michael (CEO) Sale 19,922 77.88 1,551,585
2016-11-07 Xiao Deming (Pres. of MPS Asia Operations) Sale 6,757 77.88 526,255
2016-11-04 Sciammas Maurice (Sr. V.P.of Sales and Marketing) Sale 356 76.32 27,169
2016-11-04 Tseng Saria (VP & General Counsel) Sale 356 76.32 27,169
2016-11-04 Hsing Michael (CEO) Sale 1,171 76.32 89,368
2016-11-04 Xiao Deming (Pres. of MPS Asia Operations) Sale 356 76.32 27,169

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.