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Monolithic Power Systems Inc (MPWR) Insider Trading

Total insider buys:
  • $0.00
Total insider sells:
  • $1,313,546,620.34
Most recent insider trade:
  • Sept. 18, 2025
Most active insider trader:
  • Michael Hsing
Trader NameDateTitleAmountPriceTypeTotal Value
Oct. 8, 2018Director15,000$116.55Sell$1,748,250.00
Oct. 1, 2018CEO15,870$126.18Sell$2,002,476.60
Sept. 10, 2018Director15,000$146.27Sell$2,194,050.00
Sept. 4, 2018CEO25,332$150.36Sell$3,808,919.52
Aug. 31, 2018Insider10,000$148.55Sell$1,485,500.00
Aug. 27, 2018Insider3,334$150.00Sell$500,100.00
Aug. 23, 2018Insider5,497$145.82Sell$801,572.54
Aug. 21, 2018VP5,795$143.81Sell$833,378.95
Aug. 20, 2018CFO181$139.96Sell$25,332.76
Aug. 17, 2018CFO131$139.56Sell$18,282.36
Aug. 14, 2018CEO17,634$141.05Sell$2,487,275.70
Aug. 14, 2018VP10,737$141.02Sell$1,514,131.74
Aug. 10, 2018Insider11,081$138.93Sell$1,539,483.33
Aug. 6, 2018VP4,729$135.65Sell$641,488.85
Aug. 6, 2018CEO15,572$135.65Sell$2,112,341.80
Aug. 6, 2018Insider1,710$135.99Sell$232,542.90
Aug. 3, 2018Insider3,019$135.45Sell$408,923.55
Aug. 3, 2018VP3,564$135.45Sell$482,743.80
Aug. 3, 2018CEO9,943$135.45Sell$1,346,779.35
July 9, 2018Director15,000$137.31Sell$2,059,650.00
July 2, 2018CEO20,000$132.97Sell$2,659,400.00
June 1, 2018CEO20,000$133.05Sell$2,661,000.00
May 29, 2018VP6,900$131.38Sell$906,522.00
May 21, 2018VP5,070$130.91Sell$663,713.70
May 18, 2018VP3,000$129.23Sell$387,690.00
May 18, 2018Insider4,816$130.00Sell$626,080.00
May 18, 2018CFO180$127.81Sell$23,005.80
May 14, 2018CEO17,633$126.75Sell$2,234,982.75
May 7, 2018VP7,385$121.09Sell$894,249.65
May 7, 2018Director10,000$124.89Sell$1,248,900.00
May 4, 2018Insider5,643$120.01Sell$677,216.43
May 4, 2018CEO18,581$120.01Sell$2,229,905.81
May 4, 2018VP5,736$120.01Sell$688,377.36
April 30, 2018CFO232$120.55Sell$27,967.60
April 18, 2018VP1,400$125.02Sell$175,028.00
April 9, 2018Director15,000$113.41Sell$1,701,150.00
April 2, 2018CEO20,000$111.90Sell$2,238,000.00
March 19, 2018VP4,419$122.04Sell$539,294.76
March 5, 2018Director15,000$118.10Sell$1,771,500.00
March 1, 2018CFO460$117.18Sell$53,902.80
Feb. 22, 2018VP26,429$117.34Sell$3,101,178.86
Feb. 21, 2018CEO53,029$118.48Sell$6,282,875.92
Feb. 21, 2018Director10,000$118.77Sell$1,187,700.00
Feb. 20, 2018CFO1,287$117.28Sell$150,939.36
Feb. 14, 2018CEO20,429$111.15Sell$2,270,683.35
Feb. 12, 2018Insider29,203$108.19Sell$3,159,472.57
Feb. 12, 2018VP29,497$108.19Sell$3,191,280.43
Feb. 12, 2018CEO96,181$108.19Sell$10,405,822.39
Feb. 12, 2018CFO7,564$108.19Sell$818,349.16
Feb. 5, 2018VP4,057$113.85Sell$461,889.45
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  • Insiders are selling Monolithic Power Systems Inc stock.

  • The insider traders at Monolithic Power Systems Inc are: Michael Hsing, Deming Xiao, Theodore Blegen, Maurice Sciammas, Saria Tseng, James C Moyer, Meera Rao, Jeff Zhou, Kuo Wei Herbert Chang, James Moyer, Victor K Lee, James C. Moyer, Victor K. Lee, Pilkington Karen A Smith-, Pilkington Karen Smith-, Victor Lee, Douglas Mcburnie, and Carintia Martinez

  • The most active insider trader at Monolithic Power Systems Inc is Michael Hsing with 147 trades.

  • Michael Hsing has sold the most Monolithic Power Systems Inc stock with a total value of $543,931,184.02.

  • The most recent insider trade for Monolithic Power Systems Inc was on Sept. 18, 2025.

  • The single biggest insider sell for Monolithic Power Systems Inc was from Michael Hsing with a total value of $34,203,493.56 on Jan. 4, 2024.