Tseng Saria, EVP and General Counsel at Monolithic Power Systems Inc. ($MPWR), sold shares on the open market 34 times over the last year, totaling $95.2 million. Her most recent sale occurred on February 6, 2026. These sales rank her 169th among 11,678 insiders for highest total sold, well above the average of $8.6 million per insider and 6.4 transactions. She made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 1, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 160 | $1134.14 | 175,062.0000 | 48,042,000 | 0.09% | 0.00% |
| April 1, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 184 | $1132.15 | 175,222.0000 | 48,042,000 | 0.10% | 0.00% |
| April 1, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 576 | $1131.24 | 175,406.0000 | 48,042,000 | 0.33% | 0.00% |
| April 1, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 292 | $1136.99 | 174,582.0000 | 48,042,000 | 0.17% | 0.00% |
| April 1, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 188 | $1135.91 | 174,874.0000 | 48,042,000 | 0.11% | 0.00% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 3194 | $1017.22 | 180,868.0000 | 48,042,000 | 1.74% | 0.01% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 3360 | $1009.63 | 184,062.0000 | 48,042,000 | 1.79% | 0.01% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 5154 | $1000.81 | 196,502.0000 | 48,042,000 | 2.56% | 0.01% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 9080 | $1005.18 | 187,422.0000 | 48,042,000 | 4.62% | 0.02% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 80 | $1041.12 | 175,982.0000 | 48,042,000 | 0.05% | 0.00% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 166 | $1035.60 | 176,062.0000 | 48,042,000 | 0.09% | 0.00% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2440 | $1029.21 | 176,228.0000 | 48,042,000 | 1.37% | 0.01% |
| March 30, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2200 | $1023.00 | 178,668.0000 | 48,042,000 | 1.22% | 0.00% |
| Feb. 6, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 22875 | $1171.16 | 201,626.0000 | 48,042,000 | 10.19% | 0.05% |
| Feb. 3, 2026 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | A | Common Stock | 57170 | $0.00 | 224,501.0000 | 48,042,000 | 34.17% | 0.12% |
| Dec. 24, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | G | Common Stock | 1000 | $0.00 | 167,331.0000 | 48,042,000 | 0.60% | 0.00% |
| Dec. 24, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | G | Common Stock | 1000 | $0.00 | 167,331.0000 | 48,042,000 | 0.59% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 346 | $900.41 | 201,690.0000 | 48,042,000 | 0.17% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 240 | $922.78 | 187,091.0000 | 48,042,000 | 0.13% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1200 | $923.54 | 185,891.0000 | 48,042,000 | 0.64% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1327 | $924.32 | 184,564.0000 | 48,042,000 | 0.71% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1126 | $925.55 | 183,438.0000 | 48,042,000 | 0.61% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 10360 | $926.02 | 173,078.0000 | 48,042,000 | 5.65% | 0.02% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1845 | $927.41 | 171,233.0000 | 48,042,000 | 1.07% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 984 | $928.60 | 170,249.0000 | 48,042,000 | 0.57% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2238 | $929.29 | 168,011.0000 | 48,042,000 | 1.31% | 0.00% |
| Nov. 26, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 680 | $930.48 | 167,331.0000 | 48,042,000 | 0.40% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 385 | $894.54 | 206,946.0000 | 48,042,000 | 0.19% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1625 | $895.63 | 205,321.0000 | 48,042,000 | 0.79% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2066 | $896.37 | 203,255.0000 | 48,042,000 | 1.01% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 754 | $897.54 | 202,501.0000 | 48,042,000 | 0.37% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 145 | $898.38 | 202,356.0000 | 48,042,000 | 0.07% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 320 | $899.37 | 202,036.0000 | 48,042,000 | 0.16% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 880 | $901.58 | 200,810.0000 | 48,042,000 | 0.44% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 120 | $902.07 | 200,690.0000 | 48,042,000 | 0.06% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 160 | $903.54 | 200,530.0000 | 48,042,000 | 0.08% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 200 | $904.39 | 200,330.0000 | 48,042,000 | 0.10% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 160 | $905.32 | 200,170.0000 | 48,042,000 | 0.08% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 272 | $906.33 | 199,898.0000 | 48,042,000 | 0.14% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 10200 | $907.21 | 189,698.0000 | 48,042,000 | 5.10% | 0.02% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 888 | $908.49 | 188,810.0000 | 48,042,000 | 0.47% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 556 | $909.35 | 188,254.0000 | 48,042,000 | 0.29% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 359 | $910.42 | 187,895.0000 | 48,042,000 | 0.19% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 324 | $911.92 | 187,571.0000 | 48,042,000 | 0.17% | 0.00% |
| Nov. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 240 | $912.30 | 187,331.0000 | 48,042,000 | 0.13% | 0.00% |
| Oct. 30, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | F | Common Stock | 54543 | $1096.63 | 207,331.0000 | 48,042,000 | 20.83% | 0.11% |
| Oct. 25, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | A | Common Stock | 135520 | $0.00 | 261,874.0000 | 48,042,000 | 107.25% | 0.28% |
| Oct. 24, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1300 | $1087.62 | 126,354.0000 | 48,042,000 | 1.02% | 0.00% |
| Oct. 15, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 14028 | $1016.18 | 130,466.0000 | 48,042,000 | 9.71% | 0.03% |
| Oct. 16, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1313 | $1030.81 | 127,654.0000 | 48,042,000 | 1.02% | 0.00% |
| Oct. 16, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1499 | $1021.26 | 128,967.0000 | 48,042,000 | 1.15% | 0.00% |
| Sept. 18, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 14510 | $914.45 | 144,494.0000 | 48,835,000 | 9.13% | 0.03% |
| Feb. 10, 2025 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 663 | $717.10 | 158,977.0000 | 48,835,000 | 0.42% | 0.00% |
| Nov. 8, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 866 | $765.14 | 159,640.0000 | 48,964,000 | 0.54% | 0.00% |
| Aug. 8, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 859 | $778.39 | 160,506.0000 | 48,771,000 | 0.53% | 0.00% |
| July 22, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 3205 | $831.58 | 161,365.0000 | 48,771,000 | 1.95% | 0.01% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2656 | $816.34 | 166,428.0000 | 48,771,000 | 1.57% | 0.01% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2815 | $808.61 | 178,507.0000 | 48,771,000 | 1.55% | 0.01% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 15822 | $807.81 | 181,322.0000 | 48,771,000 | 8.03% | 0.03% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2020 | $806.57 | 197,144.0000 | 48,771,000 | 1.01% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 106 | $805.16 | 199,164.0000 | 48,771,000 | 0.05% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 150 | $804.18 | 199,270.0000 | 48,771,000 | 0.08% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1800 | $803.53 | 199,420.0000 | 48,771,000 | 0.89% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 10 | $802.19 | 201,220.0000 | 48,771,000 | 0.00% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 4703 | $809.45 | 173,804.0000 | 48,771,000 | 2.63% | 0.01% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1198 | $810.34 | 172,606.0000 | 48,771,000 | 0.69% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1422 | $811.82 | 171,184.0000 | 48,771,000 | 0.82% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 2100 | $812.65 | 169,084.0000 | 48,771,000 | 1.23% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 600 | $798.72 | 201,453.0000 | 48,771,000 | 0.30% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 150 | $796.70 | 202,053.0000 | 48,771,000 | 0.07% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 220 | $795.95 | 202,203.0000 | 48,771,000 | 0.11% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1098 | $794.69 | 202,423.0000 | 48,771,000 | 0.54% | 0.00% |
| July 2, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 1858 | $824.65 | 164,570.0000 | 48,771,000 | 1.12% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 24 | $800.62 | 201,230.0000 | 48,771,000 | 0.01% | 0.00% |
| July 1, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 199 | $799.94 | 201,254.0000 | 48,771,000 | 0.10% | 0.00% |
| May 8, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | EVP & General Counsel | S | Common Stock | 869 | $690.02 | 203,521.0000 | 48,771,000 | 0.43% | 0.00% |
| Feb. 8, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | Executive VP & General Counsel | S | Common Stock | 859 | $680.00 | 204,339.0000 | 48,771,000 | 0.42% | 0.00% |
| Feb. 5, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | Executive VP & General Counsel | S | Common Stock | 982 | $641.00 | 205,198.0000 | 48,771,000 | 0.48% | 0.00% |
| Jan. 9, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | Executive VP & General Counsel | S | Common Stock | 1390 | $600.00 | 206,180.0000 | 48,771,000 | 0.67% | 0.00% |
| Jan. 4, 2024 | MONOLITHIC POWER SYSTEMS INC | $MPWR | Tseng Saria | Executive VP & General Counsel | S | Common Stock | 25314 | $583.14 | 207,570.0000 | 48,771,000 | 10.87% | 0.05% |