SEC Insider Transactions from Xiao Deming.

Last updated: 2026-03-14 11:48 UTC | Total transactions: 34

Xiao Deming, EVP of Global Operations at Monolithic Power Systems ($MPWR), sold shares on the open market twice in the last year for nearly $58 million. His most recent sale occurred on February 6, 2026. These MPWR insider sales rank 274th among 11,678 individuals in our database, surpassing the average of $8.6 million and 6.4 transactions per seller. He made no open market purchases.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Feb. 6, 2026 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 22875 $1171.16 260,723.0000 48,042,000 8.07% 0.05%
Feb. 3, 2026 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations A Common Stock 57170 $0.00 283,598.0000 48,042,000 25.25% 0.12%
Oct. 30, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations F Common Stock 54543 $1096.63 226,428.0000 48,042,000 19.41% 0.11%
Oct. 25, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations A Common Stock 135520 $0.00 280,971.0000 48,042,000 93.17% 0.28%
Aug. 11, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations G Common Stock 945 $0.00 145,451.0000 48,835,000 0.65% 0.00%
Aug. 11, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations G Common Stock 945 $0.00 145,451.0000 48,835,000 0.65% 0.00%
Aug. 1, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 39999 $780.00 145,451.0000 48,835,000 21.57% 0.08%
Feb. 10, 2025 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 662 $717.10 185,423.0000 48,835,000 0.36% 0.00%
Nov. 8, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 866 $765.14 186,085.0000 48,964,000 0.46% 0.00%
Aug. 27, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 9259 $950.00 186,951.0000 48,771,000 4.72% 0.02%
Aug. 22, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations G Common Stock 8968 $0.00 196,210.0000 48,771,000 4.37% 0.02%
Aug. 22, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations G Common Stock 8968 $0.00 206,210.0000 48,771,000 4.55% 0.02%
Aug. 22, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 10000 $950.00 196,210.0000 48,771,000 4.85% 0.02%
Aug. 19, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations G Common Stock 30291 $0.00 206,210.0000 48,771,000 12.81% 0.06%
Aug. 19, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations G Common Stock 30291 $0.00 206,210.0000 48,771,000 17.22% 0.06%
Aug. 8, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 859 $778.39 206,200.0000 48,771,000 0.41% 0.00%
July 22, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 3205 $831.58 207,059.0000 48,771,000 1.52% 0.01%
May 22, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 1300 $769.40 210,264.0000 48,771,000 0.61% 0.00%
May 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations G Common Stock 29 $0.00 211,564.0000 48,771,000 0.01% 0.00%
May 8, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming EVP, Global Operations S Common Stock 869 $690.02 211,593.0000 48,771,000 0.41% 0.00%
Feb. 8, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 859 $680.00 212,426.0000 48,771,000 0.40% 0.00%
Feb. 5, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 982 $641.00 213,285.0000 48,771,000 0.46% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 2387 $589.52 219,359.0000 48,771,000 1.08% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 3718 $590.37 215,641.0000 48,771,000 1.69% 0.01%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 930 $591.34 214,711.0000 48,771,000 0.43% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 200 $592.38 214,511.0000 48,771,000 0.09% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 500 $584.39 225,282.0000 48,771,000 0.22% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 204 $594.13 214,297.0000 48,771,000 0.10% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 30 $596.19 214,267.0000 48,771,000 0.01% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 10 $593.00 214,501.0000 48,771,000 0.00% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 700 $586.21 224,582.0000 48,771,000 0.31% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 1079 $587.84 223,503.0000 48,771,000 0.48% 0.00%
Jan. 10, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 1757 $588.44 221,746.0000 48,771,000 0.79% 0.00%
Jan. 4, 2024 MONOLITHIC POWER SYSTEMS INC $MPWR Xiao Deming Pres. of MPS Asia Operations S Common Stock 25314 $583.14 225,782.0000 48,771,000 10.08% 0.05%