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Arphra AIPlain-English read on Monolithic Power Systems, Inc.’s valuationInsider signal · 90d
Net sellers
Bought
$0
Sold
$70.3M
Txns
47
Over the trailing 90 days insiders are net sellers — $0 bought against $70.3M sold across 47 open-market Form-4 transactions. Much insider selling is scheduled (10b5-1); read the asymmetry, not any single print.
Open-market Form 4
· insider_tradesInsider transactions · last 365d
Net −$455.6M0 buys
| Insider | Role | Type | Shares | Value | Date |
|---|---|---|---|---|---|
| Elmiger Eugen J | director | Sell | −814 | $1.3M | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −834 | $1.3M | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −1,078 | $1.7M | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −1,355 | $2.2M | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −1,879 | $3.0M | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −2,587 | $4.1M | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −2,619 | $4.2M | May 06, 2026 |
| Zhou Jeff | director | Sell | −500 | $825.0K | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −320 | $499.2K | May 06, 2026 |
| Elmiger Eugen J | director | Sell | −514 | $822.5K | May 06, 2026 |
| Zhou Jeff | director | Sell | −514 | $809.3K | May 05, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | −380 | $601.8K | May 05, 2026 |
| Zhou Jeff | director | Sell | −500 | $800.0K | May 05, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | −30 | $47.7K | May 04, 2026 |
Transaction mix · 365d
100%
Sells200 · $455.6M
Buys0 · $0
Top sellers · 365d
Hsing Michael · director, officer: CEO−$197.2M
Tseng Saria · officer: EVP & General Counsel−$111.6M
Sciammas Maurice · officer: EVP, WW Sales & Marketing−$62.1M
Transactions
200
0 buys · 200 sells
Bought
$0
Open market
Sold
$455.62M
Open market
Net flow
−$455.62M
Buys − sells
Transactions
| Insider | Role | Action | Shares | Price | Value | Trade date | Filing |
|---|---|---|---|---|---|---|---|
| Elmiger Eugen J | director | Sell | 814 | $1,566.36 | $1.28M | May 06, 2026 | May 08, 2026 |
| Elmiger Eugen J | director | Sell | 834 | $1,575.57 | $1.31M | May 06, 2026 | May 08, 2026 |
| Elmiger Eugen J | director | Sell | 1,078 | $1,571.58 | $1.69M | May 06, 2026 | May 08, 2026 |
| Elmiger Eugen J | director | Sell | 1,355 | $1,591.38 | $2.16M | May 06, 2026 | May 08, 2026 |
| Elmiger Eugen J | director | Sell | 1,879 | $1,581.81 | $2.97M | May 06, 2026 | May 08, 2026 |
| Elmiger Eugen J | director | Sell | 2,587 | $1,586.81 | $4.11M | May 06, 2026 | May 08, 2026 |
| Elmiger Eugen J | director | Sell | 2,619 | $1,596.42 | $4.18M | May 06, 2026 | May 08, 2026 |
| Zhou Jeff | director | Sell | 500 | $1,650.00 | $825K | May 06, 2026 | May 06, 2026 |
| Elmiger Eugen J | director | Sell | 320 | $1,559.88 | $499.16K | May 06, 2026 | May 08, 2026 |
| Elmiger Eugen J | director | Sell | 514 | $1,600.14 | $822.47K | May 06, 2026 | May 08, 2026 |
| Zhou Jeff | director | Sell | 514 | $1,574.48 | $809.28K | May 05, 2026 | May 06, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 380 | $1,583.81 | $601.85K | May 05, 2026 | May 06, 2026 |
| Zhou Jeff | director | Sell | 500 | $1,600.00 | $800K | May 05, 2026 | May 06, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 30 | $1,588.73 | $47.66K | May 04, 2026 | May 06, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 120 | $1,321.94 | $158.63K | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 4,244 | $1,312.82 | $5.57M | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,279 | $1,308.30 | $1.67M | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 120 | $1,287.12 | $154.45K | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 840 | $1,319.25 | $1.11M | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 800 | $1,302.52 | $1.04M | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 560 | $1,266.48 | $709.23K | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 400 | $1,292.08 | $516.83K | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 360 | $1,270.29 | $457.3K | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 240 | $1,279.55 | $307.09K | Apr 08, 2026 | Apr 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,396 | $1,179.50 | $1.65M | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,680 | $1,176.35 | $1.98M | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 244 | $1,139.96 | $278.15K | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 480 | $1,149.05 | $551.54K | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 2,036 | $1,170.38 | $2.38M | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 556 | $1,144.42 | $636.3K | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 560 | $1,159.62 | $649.39K | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 684 | $1,165.66 | $797.31K | Apr 06, 2026 | Apr 08, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 184 | $1,132.15 | $208.32K | Apr 01, 2026 | Apr 03, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 188 | $1,135.91 | $213.55K | Apr 01, 2026 | Apr 03, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 292 | $1,136.99 | $332K | Apr 01, 2026 | Apr 03, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 160 | $1,134.14 | $181.46K | Apr 01, 2026 | Apr 03, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 30 | $1,116.44 | $33.49K | Apr 01, 2026 | Apr 03, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 576 | $1,131.24 | $651.59K | Apr 01, 2026 | Apr 03, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 2,440 | $1,029.21 | $2.51M | Mar 30, 2026 | Apr 01, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 3,360 | $1,009.63 | $3.39M | Mar 30, 2026 | Apr 01, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 80 | $1,041.12 | $83.29K | Mar 30, 2026 | Apr 01, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 5,154 | $1,000.81 | $5.16M | Mar 30, 2026 | Apr 01, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 166 | $1,035.60 | $171.91K | Mar 30, 2026 | Apr 01, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 9,080 | $1,005.18 | $9.13M | Mar 30, 2026 | Apr 01, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 3,194 | $1,017.22 | $3.25M | Mar 30, 2026 | Apr 01, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 2,200 | $1,023.00 | $2.25M | Mar 30, 2026 | Apr 01, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 30 | $1,095.07 | $32.85K | Mar 20, 2026 | Mar 24, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 2,076 | $1,168.80 | $2.43M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 160 | $1,188.23 | $190.12K | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 200 | $1,173.39 | $234.68K | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 480 | $1,180.79 | $566.78K | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 600 | $1,194.34 | $716.6K | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,240 | $1,210.11 | $1.5M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,440 | $1,200.81 | $1.73M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,440 | $1,217.12 | $1.75M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 3,640 | $1,205.82 | $4.39M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 4,001 | $1,164.92 | $4.66M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 4,992 | $1,159.84 | $5.79M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 12,731 | $1,155.71 | $14.71M | Feb 12, 2026 | Feb 17, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,366 | $1,163.71 | $1.59M | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,533 | $1,167.62 | $1.79M | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,542 | $1,182.82 | $1.82M | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,987 | $1,172.92 | $2.33M | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 2,104 | $1,188.17 | $2.5M | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 2,799 | $1,177.67 | $3.3M | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 6,079 | $1,192.67 | $7.25M | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 14,578 | $1,197.20 | $17.45M | Feb 11, 2026 | Feb 13, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 200 | $1,179.98 | $236K | Feb 11, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 363 | $1,158.71 | $420.61K | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 649 | $1,202.28 | $780.28K | Feb 11, 2026 | Feb 13, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 3,864 | $1,145.90 | $4.43M | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 6,325 | $1,136.75 | $7.19M | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 4,302 | $1,132.01 | $4.87M | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 16,080 | $1,141.88 | $18.36M | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 280 | $1,197.26 | $335.23K | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 360 | $1,161.41 | $418.11K | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 694 | $1,154.96 | $801.54K | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 880 | $1,176.04 | $1.03M | Feb 10, 2026 | Feb 12, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 1,215 | $1,151.11 | $1.4M | Feb 10, 2026 | Feb 12, 2026 |
| Lee Victor K | director | Sell | 400 | $1,212.16 | $484.86K | Feb 09, 2026 | Feb 11, 2026 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 22,875 | $1,171.16 | $26.79M | Feb 06, 2026 | Feb 10, 2026 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 22,875 | $1,171.16 | $26.79M | Feb 06, 2026 | Feb 10, 2026 |
| Xiao Deming | officer: EVP, Global Operations | Sell | 22,875 | $1,171.16 | $26.79M | Feb 06, 2026 | Feb 10, 2026 |
| Hsing Michael | director, officer: CEO | Sell | 54,923 | $1,171.16 | $64.32M | Feb 06, 2026 | Feb 10, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 21,725 | $1,171.16 | $25.44M | Feb 06, 2026 | Feb 10, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $1,117.11 | $44.68K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 379 | $1,133.47 | $429.59K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 322 | $1,132.67 | $364.72K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 320 | $1,130.48 | $361.75K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 241 | $1,134.41 | $273.39K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 240 | $1,129.28 | $271.03K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 240 | $1,128.43 | $270.82K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 220 | $1,110.58 | $244.33K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 200 | $1,126.58 | $225.32K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 198 | $1,131.70 | $224.08K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 120 | $1,136.35 | $136.36K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 120 | $1,135.49 | $136.26K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $1,139.49 | $91.16K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $1,137.81 | $91.02K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $1,127.39 | $90.19K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $1,120.77 | $89.66K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $1,122.56 | $44.9K | Feb 02, 2026 | Feb 04, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $933.64 | $74.69K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 194 | $930.86 | $180.59K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 120 | $936.50 | $112.38K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 117 | $939.75 | $109.95K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $946.62 | $75.73K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $935.33 | $74.83K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $927.61 | $74.21K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $934.74 | $37.39K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $940.03 | $37.6K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $945.00 | $37.8K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 74 | $942.42 | $69.74K | Jan 02, 2026 | Jan 06, 2026 |
| Lee Victor K | director | Sell | 600 | $930.86 | $558.52K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 650 | $944.35 | $613.83K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 539 | $943.71 | $508.66K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 460 | $938.52 | $431.72K | Jan 02, 2026 | Jan 06, 2026 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 406 | $941.60 | $382.29K | Jan 02, 2026 | Jan 06, 2026 |
| Lee Victor K | director | Sell | 80 | $955.08 | $76.41K | Dec 24, 2025 | Dec 29, 2025 |
| Lee Victor K | director | Sell | 83 | $952.37 | $79.05K | Dec 24, 2025 | Dec 29, 2025 |
| Lee Victor K | director | Sell | 160 | $951.60 | $152.26K | Dec 24, 2025 | Dec 29, 2025 |
| Lee Victor K | director | Sell | 197 | $949.70 | $187.09K | Dec 24, 2025 | Dec 29, 2025 |
| Lee Victor K | director | Sell | 200 | $953.70 | $190.74K | Dec 24, 2025 | Dec 29, 2025 |
| Lee Victor K | director | Sell | 280 | $950.64 | $266.18K | Dec 24, 2025 | Dec 29, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 480 | $908.69 | $436.17K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 1,984 | $909.00 | $1.8M | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 120 | $904.38 | $108.53K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $907.59 | $72.61K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $906.84 | $72.55K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 80 | $901.88 | $72.15K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 56 | $911.59 | $51.05K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $902.31 | $36.09K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $900.88 | $36.04K | Dec 01, 2025 | Dec 02, 2025 |
| BLEGEN THEODORE | officer: EVP and CFO | Sell | 40 | $899.73 | $35.99K | Dec 01, 2025 | Dec 02, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 2,238 | $929.29 | $2.08M | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,845 | $927.41 | $1.71M | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,327 | $924.32 | $1.23M | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 680 | $930.48 | $632.73K | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 984 | $928.60 | $913.74K | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 240 | $922.78 | $221.47K | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 10,360 | $926.02 | $9.59M | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,200 | $923.54 | $1.11M | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,126 | $925.55 | $1.04M | Nov 26, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 10,200 | $907.21 | $9.25M | Nov 25, 2025 | Nov 28, 2025 |
| CHANG KUO WEI HERBERT | director | Sell | 100 | $896.97 | $89.7K | Nov 25, 2025 | Nov 25, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 324 | $911.92 | $295.46K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 359 | $910.42 | $326.84K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 385 | $894.54 | $344.4K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 556 | $909.35 | $505.6K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 754 | $897.54 | $676.75K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 880 | $901.58 | $793.39K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 888 | $908.49 | $806.74K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 1,625 | $895.63 | $1.46M | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 2,066 | $896.37 | $1.85M | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 346 | $900.41 | $311.54K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 200 | $904.39 | $180.88K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 160 | $905.32 | $144.85K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 160 | $903.54 | $144.57K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 145 | $898.38 | $130.27K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 120 | $902.07 | $108.25K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 240 | $912.30 | $218.95K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 272 | $906.33 | $246.52K | Nov 25, 2025 | Nov 28, 2025 |
| Tseng Saria | officer: EVP & General Counsel | Sell | 320 | $899.37 | $287.8K | Nov 25, 2025 | Nov 28, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 3,976 | $895.23 | $3.56M | Nov 24, 2025 | Nov 25, 2025 |
| CHANG KUO WEI HERBERT | director | Sell | 100 | $873.97 | $87.4K | Nov 21, 2025 | Nov 24, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 810 | $886.01 | $717.67K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 731 | $874.50 | $639.26K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 723 | $868.42 | $627.87K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 699 | $867.57 | $606.43K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 574 | $872.80 | $500.99K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 431 | $875.26 | $377.24K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 339 | $866.19 | $293.64K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 320 | $870.36 | $278.52K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 240 | $862.58 | $207.02K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 220 | $871.45 | $191.72K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 160 | $863.86 | $138.22K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 40 | $865.89 | $34.64K | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 3,344 | $882.51 | $2.95M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 3,776 | $880.58 | $3.33M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 6,513 | $883.50 | $5.75M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 2,149 | $884.44 | $1.9M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 1,976 | $877.45 | $1.73M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 1,966 | $879.54 | $1.73M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 1,854 | $878.55 | $1.63M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 2,469 | $881.42 | $2.18M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 1,842 | $869.39 | $1.6M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 1,738 | $885.10 | $1.54M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 1,146 | $873.78 | $1M | Nov 19, 2025 | Nov 20, 2025 |
| Sciammas Maurice | officer: EVP, WW Sales & Marketing | Sell | 940 | $876.62 | $824.02K | Nov 19, 2025 | Nov 20, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 461 | $972.78 | $448.45K | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 633 | $979.59 | $620.08K | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 728 | $970.29 | $706.37K | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 975 | $969.62 | $945.38K | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 987 | $980.06 | $967.32K | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 59 | $971.81 | $57.34K | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 3,264 | $964.47 | $3.15M | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 1,904 | $961.63 | $1.83M | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 2,072 | $968.37 | $2.01M | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 2,799 | $958.34 | $2.68M | Nov 12, 2025 | Nov 13, 2025 |
| Hsing Michael | director, officer: CEO | Sell | 2,817 | $962.61 | $2.71M | Nov 12, 2025 | Nov 13, 2025 |
By insider
- Hsing Michael−$197.19Mdirector, officer: CEO0B · 43S
- Tseng Saria−$111.55Mofficer: EVP & General Counsel0B · 60S
- Sciammas Maurice−$62.08Mofficer: EVP, WW Sales & Marketing0B · 31S
- BLEGEN THEODORE−$34.38Mofficer: EVP and CFO0B · 43S
- Xiao Deming−$26.79Mofficer: EVP, Global Operations0B · 1S
- Elmiger Eugen J−$19.02Mdirector0B · 9S
- Zhou Jeff−$2.43Mdirector0B · 3S
- Lee Victor K−$2Mdirector0B · 8S
- CHANG KUO WEI HERBERT−$177.09Kdirector0B · 2S
Beneficial ownership filings
Schedule 13D / 13G — investors holding more than 5% of MPWR-US.
DB · acquisition_ownership100
| Filed | Reporting person | Form | Type | Aggregate owned | % Class | Sole voting | Shared voting | Citizenship | |
|---|---|---|---|---|---|---|---|---|---|
| Apr 30, 2026 | Vanguard Capital Management | — | IA | — | +7.25% | 0 | 0 | PENNSYLVANIA | SEC → |
| Apr 29, 2026 | Vanguard Portfolio Management | — | IA | — | +5.14% | 0 | 0 | PENNSYLVANIA | SEC → |
| Mar 27, 2026 | The Vanguard Group | — | IA | — | 0.00% | 0 | 0 | PENNSYLVANIA | SEC → |
| Feb 05, 2026 | FMR LLC | — | HC | — | +8.30% | 0 | 0 | DELAWARE | SEC → |
| Jan 08, 2026 | BlackRock, Inc. | — | HC | — | +10.20% | 0 | 0 | DELAWARE | SEC → |
| Jul 29, 2025 | The Vanguard Group | — | IA | — | +12.40% | 230.37K | 230.37K | PENNSYLVANIA | SEC → |
| Apr 17, 2025 | BlackRock, Inc. | — | HC | — | +9.80% | 0 | 0 | DELAWARE | SEC → |
| Feb 14, 2024 | 52-0556948 | — | IA | — | +4.60% | 659.65K | 0 | Maryland | SEC → |
| Feb 09, 2024 | FMR LLC | — | HC | — | +5.28% | 2.42M | 0 | Delaware | SEC → |
| Feb 09, 2024 | Abigail P. Johnson | — | IN | — | +5.28% | 0 | 0 | Delaware | SEC → |
| Feb 14, 2023 | 52-0556948 | — | IA | — | +7.80% | 1.12M | 0 | Maryland | SEC → |
| Jan 20, 2023 | (1) BlackRock, Inc. | — | HC | — | +11.60% | 0 | 0 | Delaware | SEC → |
| Feb 10, 2022 | The Vanguard Group - 23-1945930 | — | IA | — | +10.40% | 0 | 74.02K | Pennsylvania For | SEC → |
| Jan 28, 2022 | (1) BlackRock, Inc. | — | HC | — | +13.00% | 5.45M | 0 | Delaware | SEC → |
| Mar 10, 2021 | The Vanguard Group - 23-1945930 | — | IA | — | +10.46% | 0 | 74.3K | Pennsylvania | SEC → |
| Feb 10, 2021 | The Vanguard Group - 23-1945930 | — | IA | — | +8.92% | 0 | 41.84K | Pennsylvania | SEC → |
| Jan 26, 2021 | (1) BlackRock, Inc. | — | HC | — | +14.00% | 5.91M | 0 | Delaware | SEC → |
| Feb 12, 2020 | The Vanguard Group - 23-1945930 | — | IA | — | +8.83% | 0 | 8.67K | Pennsylvania | SEC → |
| Feb 04, 2020 | (1) BlackRock, Inc. | — | HC | — | +10.60% | 4.43M | 0 | Delaware | SEC → |
| Feb 06, 2019 | (1) BlackRock, Inc. | — | HC | — | +9.80% | 4.01M | 0 | Delaware | SEC → |
| Jan 28, 2019 | Franklin Resources, Inc. | — | HC | — | +5.30% | 4 | 4 | USA | SEC → |
| Jan 19, 2018 | (1) BlackRock, Inc. | — | HC | — | +10.10% | 4.12M | 0 | Delaware | SEC → |
| Feb 08, 2017 | (1) BlackRock, Inc. | — | HC | — | +10.30% | 4.09M | 0 | Delaware | SEC → |
| Jan 25, 2017 | (1) BlackRock, Inc. | — | HC | — | +9.80% | 3.89M | 0 | Delaware | SEC → |
| Nov 03, 2016 | Co. LLC | — | IA | — | 0.00% | 0 | 0 | Delaware | SEC → |
| Feb 16, 2016 | Adage Capital Partners GP, L.L.C. | — | OO | — | +1.13% | 0 | 447.88K | Delaware | SEC → |
| Feb 16, 2016 | Phillip Gross | — | IN | — | +1.13% | 0 | 447.88K | United States | SEC → |
| Feb 16, 2016 | Adage Capital Advisors, L.L.C. | — | OO | — | +1.13% | 0 | 447.88K | Delaware | SEC → |
| Feb 16, 2016 | Robert Atchinson | — | IN | — | +1.13% | 0 | 447.88K | United States | SEC → |
| Feb 16, 2016 | Adage Capital Partners, L.P. | — | PN | — | +1.13% | 0 | 447.88K | Delaware | SEC → |
Showing 30 of 100 filings. All disclosures →
Congressional trading
DB · congress_trades1 buys0 sells1 total
| Chamber | Member | Office | Action | Amount | Trade date | Disclosed |
|---|---|---|---|---|---|---|
| Senate | Markwayne Mullin | Markwayne Mullin | Purchase | $15,001 - $50,000 | Feb 04, 2026 | Mar 02, 2026 |
Top 10 holders · 8 quarters
13F position evolutionNo 13F history in
institutional_holders for MPWR-US.