MONOLITHIC POWER SYSTEMS INC - MPWR

Insiders (Form 4) · last 180 days · showing up to 200 transactions · Form 144 is shown in the SEC filings tab · Updating…
Visible: 0
Transaction codes: P = Open-market purchase · S = Open-market sale · A = Grant/award · M = Exercise/conversion of derivative · G = Gift · F = Tax withholding · J = Other · A/D: A = Acquired (buy/receive) · D = Disposed (sell/give)
Filed Owner Title Code A/D Shares Price Value Shares after SEC
Apr 03, 2026 EVP & General Counsel S D 292.0 1,136.99 332,001.08 173,582.0 View
Apr 03, 2026 EVP & General Counsel S D 188.0 1,135.91 213,551.08 173,874.0 View
Apr 03, 2026 EVP & General Counsel S D 160.0 1,134.14 181,462.4 174,062.0 View
Apr 03, 2026 EVP & General Counsel S D 184.0 1,132.15 208,315.6 174,222.0 View
Apr 03, 2026 EVP & General Counsel S D 576.0 1,131.24 651,594.24 174,406.0 View
Apr 03, 2026 EVP, WW Sales & Marketing S D 30.0 1,116.44 33,493.2 1,239.0 View
Apr 01, 2026 EVP & General Counsel S D 80.0 1,041.12 83,289.6 174,982.0 View
Apr 01, 2026 EVP & General Counsel S D 166.0 1,035.6 171,909.6 175,062.0 View
Apr 01, 2026 EVP & General Counsel S D 2,440.0 1,029.21 2,511,272.4 175,228.0 View
Apr 01, 2026 EVP & General Counsel S D 2,200.0 1,023.0 2,250,600.0 177,668.0 View
Apr 01, 2026 EVP & General Counsel S D 3,194.0 1,017.22 3,249,000.68 179,868.0 View
Apr 01, 2026 EVP & General Counsel S D 3,360.0 1,009.63 3,392,356.8 183,062.0 View
Apr 01, 2026 EVP & General Counsel S D 9,080.0 1,005.18 9,127,034.4 186,422.0 View
Apr 01, 2026 EVP & General Counsel S D 5,154.0 1,000.81 5,158,174.74 195,502.0 View
Mar 24, 2026 EVP, WW Sales & Marketing S D 30.0 1,095.07 32,852.1 1,269.0 View
Feb 17, 2026 CEO S D 1,440.0 1,217.12 1,752,652.8 888,234.0 View
Feb 17, 2026 CEO S D 1,240.0 1,210.11 1,500,536.4 889,674.0 View
Feb 17, 2026 CEO S D 3,640.0 1,205.82 4,389,184.8 890,914.0 View
Feb 17, 2026 CEO S D 1,440.0 1,200.81 1,729,166.4 894,554.0 View
Feb 17, 2026 CEO S D 600.0 1,194.34 716,604.0 895,994.0 View
Feb 17, 2026 CEO S D 160.0 1,188.23 190,116.8 896,594.0 View
Feb 17, 2026 CEO S D 480.0 1,180.79 566,779.2 896,754.0 View
Feb 17, 2026 CEO S D 200.0 1,173.39 234,678.0 897,234.0 View
Feb 17, 2026 CEO S D 2,076.0 1,168.8 2,426,428.8 897,434.0 View
Feb 17, 2026 CEO S D 4,001.0 1,164.92 4,660,844.92 899,510.0 View
Feb 17, 2026 CEO S D 4,992.0 1,159.84 5,789,921.28 903,511.0 View
Feb 17, 2026 CEO S D 12,731.0 1,155.71 14,713,344.01 908,503.0 View
Feb 13, 2026 CEO S D 649.0 1,202.28 780,279.72 921,234.0 View
Feb 13, 2026 CEO S D 14,578.0 1,197.2 17,452,781.6 921,883.0 View
Feb 13, 2026 CEO S D 6,079.0 1,192.67 7,250,240.93 936,461.0 View
Feb 13, 2026 CEO S D 2,104.0 1,188.17 2,499,909.68 942,540.0 View
Feb 13, 2026 CEO S D 1,542.0 1,182.82 1,823,908.44 944,644.0 View
Feb 13, 2026 CEO S D 2,799.0 1,177.67 3,296,298.33 946,186.0 View
Feb 13, 2026 CEO S D 1,987.0 1,172.92 2,330,592.04 948,985.0 View
Feb 13, 2026 CEO S D 1,533.0 1,167.62 1,789,961.46 950,972.0 View
Feb 13, 2026 CEO S D 1,366.0 1,163.71 1,589,627.86 952,505.0 View
Feb 13, 2026 CEO S D 363.0 1,158.71 420,611.73 953,871.0 View
Feb 12, 2026 EVP, WW Sales & Marketing S D 200.0 1,179.975 235,995.0 1,299.0 View
Feb 12, 2026 CEO S D 280.0 1,197.26 335,232.8 954,234.0 View
Feb 12, 2026 CEO S D 880.0 1,176.04 1,034,915.2 954,514.0 View
Feb 12, 2026 CEO S D 360.0 1,161.41 418,107.6 955,394.0 View
Feb 12, 2026 CEO S D 694.0 1,154.96 801,542.24 955,754.0 View
Feb 12, 2026 CEO S D 1,215.0 1,151.11 1,398,598.65 956,448.0 View
Feb 12, 2026 CEO S D 3,864.0 1,145.9 4,427,757.6 957,663.0 View
Feb 12, 2026 CEO S D 16,080.0 1,141.88 18,361,430.4 961,527.0 View
Feb 12, 2026 CEO S D 6,325.0 1,136.75 7,189,943.75 977,607.0 View
Feb 12, 2026 CEO S D 4,302.0 1,132.01 4,869,907.02 983,932.0 View
Feb 11, 2026 S D 400.0 1,212.16 484,864.0 27,756.0 View
Feb 10, 2026 EVP and CFO S D 21,725.0 1,171.1637 25,443,531.38 82,353.0 View
Feb 10, 2026 EVP, WW Sales & Marketing S D 22,875.0 1,171.1637 26,790,369.64 178,625.0 View
Feb 10, 2026 EVP & General Counsel S D 22,875.0 1,171.1637 26,790,369.64 200,626.0 View
Feb 10, 2026 EVP, Global Operations S D 22,875.0 1,171.1637 26,790,369.64 235,932.0 View
Feb 10, 2026 CEO S D 54,923.0 1,171.1637 64,323,823.9 988,234.0 View
Feb 05, 2026 EVP, WW Sales & Marketing A A 57,170.0 0.0 0.0 201,500.0 View
Feb 05, 2026 CEO A A 136,825.0 0.0 0.0 1,043,157.0 View
Feb 05, 2026 EVP & General Counsel A A 57,170.0 0.0 0.0 223,501.0 View
Feb 05, 2026 EVP and CFO A A 38,745.0 0.0 0.0 104,078.0 View
Feb 05, 2026 EVP, Global Operations A A 57,170.0 0.0 0.0 258,807.0 View
Feb 05, 2026 A A 189.0 0.0 0.0 1,067.0 View
Feb 05, 2026 A A 189.0 0.0 0.0 28,156.0 View
Feb 05, 2026 A A 189.0 0.0 0.0 17,402.0 View
Feb 05, 2026 A A 189.0 0.0 0.0 615.0 View
Feb 05, 2026 A A 189.0 0.0 0.0 5,800.0 View
Feb 05, 2026 A A 189.0 0.0 0.0 1,342.0 View
Feb 04, 2026 EVP and CFO S D 80.0 1,139.49 91,159.2 65,333.0 View
Feb 04, 2026 EVP and CFO S D 80.0 1,137.81 91,024.8 65,412.0 View
Feb 04, 2026 EVP and CFO S D 120.0 1,136.35 136,362.0 65,492.0 View
Feb 04, 2026 EVP and CFO S D 120.0 1,135.49 136,258.8 65,612.0 View
Feb 04, 2026 EVP and CFO S D 241.0 1,134.41 273,392.81 65,732.0 View
Feb 04, 2026 EVP and CFO S D 379.0 1,133.47 429,585.13 65,973.0 View
Feb 04, 2026 EVP and CFO S D 322.0 1,132.67 364,719.74 66,352.0 View
Feb 04, 2026 EVP and CFO S D 198.0 1,131.7 224,076.6 66,674.0 View
Feb 04, 2026 EVP and CFO S D 320.0 1,130.48 361,753.6 66,872.0 View
Feb 04, 2026 EVP and CFO S D 240.0 1,129.28 271,027.2 67,192.0 View
Feb 04, 2026 EVP and CFO S D 240.0 1,128.43 270,823.2 67,432.0 View
Feb 04, 2026 EVP and CFO S D 80.0 1,127.39 90,191.2 67,672.0 View
Feb 04, 2026 EVP and CFO S D 200.0 1,126.58 225,316.0 67,752.0 View
Feb 04, 2026 EVP and CFO S D 40.0 1,122.56 44,902.4 67,952.0 View
Feb 04, 2026 EVP and CFO S D 80.0 1,120.77 89,661.6 67,992.0 View
Feb 04, 2026 EVP and CFO S D 40.0 1,117.11 44,684.4 68,072.0 View
Feb 04, 2026 EVP and CFO S D 220.0 1,110.58 244,327.6 68,112.0 View
Jan 06, 2026 S D 600.0 930.86 558,516.0 27,967.0 View
Jan 06, 2026 EVP and CFO S D 80.0 946.62 75,729.6 68,332.0 View
Jan 06, 2026 EVP and CFO S D 40.0 945.0 37,800.0 68,412.0 View
Jan 06, 2026 EVP and CFO S D 650.0 944.35 613,827.5 68,452.0 View
Jan 06, 2026 EVP and CFO S D 539.0 943.71 508,659.69 69,102.0 View
Jan 06, 2026 EVP and CFO S D 74.0 942.42 69,739.08 69,641.0 View
Jan 06, 2026 EVP and CFO S D 406.0 941.6 382,289.6 69,715.0 View
Jan 06, 2026 EVP and CFO S D 40.0 940.03 37,601.2 70,121.0 View
Jan 06, 2026 EVP and CFO S D 117.0 939.75 109,950.75 70,161.0 View
Jan 06, 2026 EVP and CFO S D 460.0 938.52 431,719.2 70,278.0 View
Jan 06, 2026 EVP and CFO S D 120.0 936.5 112,380.0 70,738.0 View
Jan 06, 2026 EVP and CFO S D 80.0 935.33 74,826.4 70,858.0 View
Jan 06, 2026 EVP and CFO S D 40.0 934.74 37,389.6 70,938.0 View
Jan 06, 2026 EVP and CFO S D 80.0 933.64 74,691.2 70,978.0 View
Jan 06, 2026 EVP and CFO S D 194.0 930.86 180,586.84 71,058.0 View
Jan 06, 2026 EVP and CFO S D 80.0 927.61 74,208.8 71,252.0 View
Dec 30, 2025 EVP & General Counsel G A 1,000.0 0.0 0.0 1,000.0 View
Dec 30, 2025 EVP & General Counsel G D 1,000.0 0.0 0.0 166,331.0 View
Dec 29, 2025 S D 80.0 955.08 76,406.4 28,567.0 View
Dec 29, 2025 S D 200.0 953.7 190,740.0 28,647.0 View
Dec 29, 2025 S D 83.0 952.37 79,046.71 28,847.0 View
Dec 29, 2025 S D 160.0 951.6 152,256.0 28,930.0 View
Dec 29, 2025 S D 280.0 950.64 266,179.2 29,090.0 View
Dec 29, 2025 S D 197.0 949.7 187,090.9 29,370.0 View
Dec 11, 2025 CEO G D 12,337.0 0.0 0.0 906,332.0 View
Dec 02, 2025 EVP and CFO S D 56.0 911.59 51,049.04 71,332.0 View
Dec 02, 2025 EVP and CFO S D 1,984.0 909.0 1,803,456.0 71,388.0 View
Dec 02, 2025 EVP and CFO S D 480.0 908.69 436,171.2 73,372.0 View
Dec 02, 2025 EVP and CFO S D 80.0 907.59 72,607.2 73,852.0 View
Dec 02, 2025 EVP and CFO S D 80.0 906.84 72,547.2 73,932.0 View
Dec 02, 2025 EVP and CFO S D 120.0 904.38 108,525.6 74,012.0 View
Dec 02, 2025 EVP and CFO S D 40.0 902.31 36,092.4 74,132.0 View
Dec 02, 2025 EVP and CFO S D 80.0 901.88 72,150.4 74,172.0 View
Dec 02, 2025 EVP and CFO S D 40.0 900.88 36,035.2 74,252.0 View
Dec 02, 2025 EVP and CFO S D 40.0 899.73 35,989.2 74,292.0 View
Nov 28, 2025 EVP & General Counsel S D 680.0 930.48 632,726.4 167,331.0 View
Nov 28, 2025 EVP & General Counsel S D 2,238.0 929.29 2,079,751.02 168,011.0 View
Nov 28, 2025 EVP & General Counsel S D 984.0 928.6 913,742.4 170,249.0 View
Nov 28, 2025 EVP & General Counsel S D 1,845.0 927.41 1,711,071.45 171,233.0 View
Nov 28, 2025 EVP & General Counsel S D 10,360.0 926.02 9,593,567.2 173,078.0 View
Nov 28, 2025 EVP & General Counsel S D 1,126.0 925.55 1,042,169.3 183,438.0 View
Nov 28, 2025 EVP & General Counsel S D 1,327.0 924.32 1,226,572.64 184,564.0 View
Nov 28, 2025 EVP & General Counsel S D 1,200.0 923.54 1,108,248.0 185,891.0 View
Nov 28, 2025 EVP & General Counsel S D 240.0 922.78 221,467.2 187,091.0 View
Nov 28, 2025 EVP & General Counsel S D 240.0 912.3 218,952.0 187,331.0 View
Nov 28, 2025 EVP & General Counsel S D 324.0 911.92 295,462.08 187,571.0 View
Nov 28, 2025 EVP & General Counsel S D 359.0 910.42 326,840.78 187,895.0 View
Nov 28, 2025 EVP & General Counsel S D 556.0 909.35 505,598.6 188,254.0 View
Nov 28, 2025 EVP & General Counsel S D 888.0 908.49 806,739.12 188,810.0 View
Nov 28, 2025 EVP & General Counsel S D 10,200.0 907.21 9,253,542.0 189,698.0 View
Nov 28, 2025 EVP & General Counsel S D 272.0 906.33 246,521.76 199,898.0 View
Nov 28, 2025 EVP & General Counsel S D 160.0 905.32 144,851.2 200,170.0 View
Nov 28, 2025 EVP & General Counsel S D 200.0 904.39 180,878.0 200,330.0 View
Nov 28, 2025 EVP & General Counsel S D 160.0 903.54 144,566.4 200,530.0 View
Nov 28, 2025 EVP & General Counsel S D 120.0 902.07 108,248.4 200,690.0 View
Nov 28, 2025 EVP & General Counsel S D 880.0 901.58 793,390.4 200,810.0 View
Nov 28, 2025 EVP & General Counsel S D 346.0 900.41 311,541.86 201,690.0 View
Nov 28, 2025 EVP & General Counsel S D 320.0 899.37 287,798.4 202,036.0 View
Nov 28, 2025 EVP & General Counsel S D 145.0 898.38 130,265.1 202,356.0 View
Nov 28, 2025 EVP & General Counsel S D 754.0 897.54 676,745.16 202,501.0 View
Nov 28, 2025 EVP & General Counsel S D 2,066.0 896.37 1,851,900.42 203,255.0 View
Nov 28, 2025 EVP & General Counsel S D 1,625.0 895.63 1,455,398.75 205,321.0 View
Nov 28, 2025 EVP & General Counsel S D 385.0 894.54 344,397.9 206,946.0 View
Nov 25, 2025 S D 100.0 896.97 89,697.0 426.0 View
Nov 25, 2025 EVP, WW Sales & Marketing S D 3,976.0 895.23 3,559,434.48 144,330.0 View
Nov 24, 2025 S D 100.0 873.97 87,397.0 526.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 810.0 886.01 717,668.1 148,306.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 1,738.0 885.1 1,538,303.8 149,116.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 2,149.0 884.44 1,900,661.56 150,854.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 6,513.0 883.5 5,754,235.5 153,003.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 3,344.0 882.51 2,951,113.44 159,516.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 2,469.0 881.42 2,176,225.98 162,860.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 3,776.0 880.58 3,325,070.08 165,329.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 1,966.0 879.54 1,729,175.64 169,105.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 1,854.0 878.55 1,628,831.7 171,071.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 1,976.0 877.45 1,733,841.2 172,925.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 940.0 876.62 824,022.8 174,901.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 431.0 875.26 377,237.06 175,841.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 731.0 874.5 639,259.5 176,272.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 1,146.0 873.78 1,001,351.88 177,003.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 574.0 872.8 500,987.2 178,149.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 220.0 871.45 191,719.0 178,723.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 320.0 870.36 278,515.2 178,943.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 1,842.0 869.39 1,601,416.38 179,263.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 723.0 868.42 627,867.66 181,105.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 699.0 867.57 606,431.43 181,828.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 339.0 866.19 293,638.41 182,527.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 40.0 865.89 34,635.6 182,866.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 160.0 863.86 138,217.6 182,906.0 View
Nov 20, 2025 EVP, WW Sales & Marketing S D 240.0 862.58 207,019.2 183,066.0 View
Nov 14, 2025 EVP, WW Sales & Marketing G A 4,530.0 0.0 0.0 49,460.0 View
Nov 14, 2025 EVP, WW Sales & Marketing G D 4,530.0 0.0 0.0 26,660.0 View
Nov 13, 2025 CEO S D 987.0 980.06 967,319.22 918,669.0 View
Nov 13, 2025 CEO S D 633.0 979.59 620,080.47 919,656.0 View
Nov 13, 2025 CEO S D 298.0 973.73 290,171.54 920,289.0 View
Nov 13, 2025 CEO S D 461.0 972.78 448,451.58 920,587.0 View
Nov 13, 2025 CEO S D 59.0 971.81 57,336.79 921,048.0 View
Nov 13, 2025 CEO S D 728.0 970.29 706,371.12 921,107.0 View
Nov 13, 2025 CEO S D 975.0 969.62 945,379.5 921,835.0 View
Nov 13, 2025 CEO S D 2,072.0 968.37 2,006,462.64 922,810.0 View
Nov 13, 2025 CEO S D 3,024.0 967.41 2,925,447.84 924,882.0 View
Nov 13, 2025 CEO S D 6,562.0 966.45 6,341,844.9 927,906.0 View
Nov 13, 2025 CEO S D 5,619.0 965.5 5,425,144.5 934,468.0 View
Nov 13, 2025 CEO S D 3,264.0 964.47 3,148,030.08 940,087.0 View
Nov 13, 2025 CEO S D 3,552.0 963.47 3,422,245.44 943,351.0 View
Nov 13, 2025 CEO S D 2,817.0 962.61 2,711,672.37 946,903.0 View
Nov 13, 2025 CEO S D 1,904.0 961.63 1,830,943.52 949,720.0 View
Nov 13, 2025 CEO S D 403.0 960.45 387,061.35 951,624.0 View
Nov 13, 2025 CEO S D 440.0 959.36 422,118.4 952,027.0 View
Nov 13, 2025 CEO S D 2,799.0 958.34 2,682,393.66 952,467.0 View
Nov 13, 2025 CEO S D 403.0 957.58 385,904.74 955,266.0 View
Nov 13, 2025 CEO S D 154.0 967.15 148,941.1 955,669.0 View
Nov 13, 2025 CEO S D 1,246.0 966.3 1,204,009.8 955,823.0 View
Nov 13, 2025 CEO S D 321.0 965.44 309,906.24 957,069.0 View
Nov 13, 2025 CEO S D 739.0 964.38 712,676.82 957,390.0 View
Nov 13, 2025 CEO S D 1,894.0 963.41 1,824,698.54 958,129.0 View
Nov 13, 2025 CEO S D 4,172.0 962.57 4,015,842.04 960,023.0 View
Nov 13, 2025 CEO S D 3,900.0 961.47 3,749,733.0 964,195.0 View
Nov 13, 2025 CEO S D 2,734.0 960.45 2,625,870.3 968,095.0 View