Insider · CIK 0001360833
Maurice Sciammas
Files at: MPWR. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 4, 2026 GForm 4 → | Aug 6, 8:31 pm EDT | MONOLITHIC POWER SYSTEMS, INC.MPWR | 50,000 | — | — | 36,062 | — | |
| Aug 3, 2026 SForm 4 → | Aug 5, 5:33 pm EDT | MONOLITHIC POWER SYSTEMS, INC.MPWR | 30 | $1,343.94 | $40,318 | 1,119 | −2.61% | 10b5-1 |
| Jul 15, 2026 SForm 4 → | Jul 17, 5:43 pm EDT | MONOLITHIC POWER SYSTEMS, INC.MPWR | 15,000 | $1,349.73 | $20,245,937 | 151,644 | −9.00% | 10b5-1 |
| Jul 1, 2026 SForm 4 → | Jul 6, 5:51 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 30 | $1,351.61 | $40,548 | 1,149 | −2.54% | 10b5-1 |
| Jun 1, 2026 SForm 4 → | Jun 3, 5:31 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 30 | $1,533.95 | $46,019 | 1,179 | −2.48% | 10b5-1 |
| Feb 12, 2019 SForm 4 → | Feb 13, 5:15 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 23,020 | $130.66 | $3,007,726 | 448,729 | −4.88% | plan? |
| Feb 11, 2019 AForm 4 → | Feb 13, 5:15 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 74,331 | $30.00 | $2,229,930 | 471,749 | — | plan? |
| Feb 4, 2019 SForm 4 → | Feb 5, 6:03 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 4,615 | $129.59 | $598,053 | 397,418 | −1.15% | plan? |
| Nov 5, 2018 SForm 4 → | Nov 6, 5:19 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 5,808 | $121.73 | $707,016 | 402,033 | −1.42% | plan? |
| Oct 25, 2018 MForm 4 → | Oct 29, 7:16 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 27,960 | — | — | 407,841 | — | plan? |
| Aug 14, 2018 SForm 4 → | Aug 16, 4:50 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 10,737 | $141.02 | $1,514,098 | 379,881 | −2.75% | plan? |
| Aug 3, 2018 SForm 4 → | Aug 7, 5:33 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 5,718 | $135.66 | $775,689 | 390,618 | −1.44% | plan? |
| May 29, 2018 SForm 4 → | May 30, 5:20 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 6,900 | $131.38 | $906,500 | 396,336 | −1.71% | plan? |
| May 22, 2018 SForm 4 → | May 24, 4:13 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 6,161 | $130.10 | $801,543 | 403,236 | −1.50% | plan? |
| May 18, 2018 SForm 4 → | May 21, 5:46 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 3,000 | $129.23 | $387,687 | 409,397 | −0.73% | plan? |
| May 3, 2018 SForm 4 → | May 7, 5:18 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 7,385 | $121.09 | $894,235 | 412,397 | −1.76% | plan? |
| Apr 18, 2018 SForm 4 → | Apr 19, 5:12 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 1,400 | $125.02 | $175,022 | 419,782 | −0.33% | plan? |
| Mar 19, 2018 SForm 4 → | Mar 21, 5:25 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 4,419 | $122.04 | $539,315 | 421,182 | −1.04% | plan? |
| Feb 12, 2018 SForm 4 → | Feb 13, 4:59 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 29,497 | $108.19 | $3,191,404 | 425,601 | −6.48% | plan? |
| Feb 7, 2018 AForm 4 → | Feb 8, 8:03 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 98,760 | $20.00 | $1,975,200 | 455,098 | — | plan? |
| Feb 5, 2018 SForm 4 → | Feb 5, 6:46 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 4,057 | $113.85 | $461,906 | 356,338 | −1.13% | plan? |
| Dec 18, 2017 SForm 4 → | Dec 18, 4:51 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 1,693 | $114.66 | $194,119 | 360,395 | −0.47% | plan? |
| Nov 6, 2017 SForm 4 → | Nov 7, 6:17 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 5,607 | $123.06 | $690,012 | 362,088 | −1.52% | plan? |
| Sep 18, 2017 SForm 4 → | Sep 19, 5:57 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 1,693 | $104.09 | $176,224 | 367,695 | −0.46% | plan? |
| Aug 4, 2017 SForm 4 → | Aug 7, 7:13 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 5,606 | $101.94 | $571,485 | 369,388 | −1.49% | plan? |
| Jul 27, 2017 SForm 4/A → | Aug 1, 7:37 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 10,828 | $105.68 | $1,144,357 | 374,994 | −2.81% | plan? |
| Jul 27, 2017 SForm 4 → | Jul 31, 7:41 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 10,828 | $101.60 | $1,100,125 | 374,994 | −2.81% | plan? amended |
| May 4, 2017 SForm 4 → | May 8, 5:34 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 5,606 | $92.24 | $517,125 | 385,822 | −1.43% | plan? |
| Feb 10, 2017 SForm 4 → | Feb 13, 6:33 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 18,201 | $89.29 | $1,625,240 | 391,428 | −4.44% | plan? |
| Feb 7, 2017 AMForm 4 → | Feb 8, 5:17 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 73,480 | — | — | 409,629 | — | plan? |
| Feb 6, 2017 SForm 4 → | Feb 8, 5:17 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 4,722 | $88.25 | $416,733 | 336,149 | −1.39% | plan? |
| Nov 4, 2016 SForm 4 → | Nov 8, 5:52 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 6,319 | $77.79 | $491,585 | 340,871 | −1.82% | plan? |
| Oct 28, 2016 MForm 4 → | Nov 1, 6:51 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 14,628 | — | — | 347,190 | — | plan? |
| Aug 4, 2016 SForm 4 → | Aug 8, 6:36 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 6,320 | $72.66 | $459,201 | 332,562 | −1.86% | plan? |
| May 11, 2016 SForm 4 → | May 13, 3:15 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 26,101 | $62.57 | $1,633,215 | 338,882 | −7.15% | plan? |
| May 4, 2016 SForm 4 → | May 6, 6:50 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 6,318 | $61.91 | $391,117 | 364,983 | −1.70% | plan? |
| Mar 31, 2016 SForm 4 → | Apr 4, 2:05 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 4,622 | $64.19 | $296,666 | 371,301 | −1.23% | plan? |
| Mar 18, 2016 SForm 4 → | Mar 21, 5:05 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 1,431 | $62.50 | $89,438 | 375,923 | −0.38% | plan? |
| Mar 1, 2016 SForm 4 → | Mar 2, 6:16 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 23,772 | $58.60 | $1,393,039 | 377,354 | −5.93% | plan? |
| Feb 5, 2016 SForm 4 → | Feb 9, 5:28 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 5,413 | $57.52 | $311,347 | 401,126 | −1.33% | plan? |
| Feb 4, 2016 SForm 4 → | Feb 4, 6:47 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 22,057 | $57.93 | $1,277,844 | 406,539 | −5.15% | plan? |
| Feb 2, 2016 AForm 4 → | Feb 4, 6:47 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 90,284 | — | — | 428,596 | — | plan? |
| Dec 17, 2015 MForm 4 → | Dec 21, 5:12 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 43,200 | — | — | 338,312 | — | plan? |
| Nov 6, 2015 SForm 4 → | Nov 10, 3:13 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 4,507 | $63.91 | $288,031 | 295,112 | −1.50% | plan? |
| Nov 4, 2015 SForm 4 → | Nov 5, 7:06 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 1,071 | $62.69 | $67,145 | 299,619 | −0.36% | plan? |
| Oct 16, 2015 SForm 4 → | Oct 19, 6:50 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 2,565 | $57.28 | $146,933 | 300,690 | −0.85% | plan? |
| Oct 14, 2015 SForm 4 → | Oct 15, 7:37 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 8,625 | $56.15 | $484,280 | 303,255 | −2.77% | plan? |
| Oct 9, 2015 SForm 4 → | Oct 13, 3:35 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 1,400 | $55.50 | $77,700 | 311,880 | −0.45% | plan? |
| Aug 10, 2015 SForm 4 → | Aug 11, 7:03 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 1,522 | $51.30 | $78,079 | 313,280 | −0.48% | plan? |
| Aug 4, 2015 SForm 4 → | Aug 6, 6:27 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 4,060 | $50.50 | $205,043 | 314,802 | −1.27% | plan? |
| Jun 11, 2015 MForm 4 → | Jun 12, 6:07 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 8,234 | $12.05 | $99,243 | 318,862 | — | plan? |
| May 8, 2015 SForm 4 → | May 12, 3:20 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 1,523 | $51.79 | $78,876 | 310,628 | −0.49% | plan? |
| May 4, 2015 SForm 4 → | May 6, 6:46 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 4,051 | $51.68 | $209,375 | 312,151 | −1.28% | plan? |
| Feb 6, 2015 SForm 4 → | Feb 9, 8:26 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 2,234 | $47.51 | $106,126 | 229,802 | −0.96% | plan? |
| Feb 5, 2015 MForm 4 → | Feb 9, 8:26 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 1,103 | $14.89 | $16,424 | 232,036 | — | plan? |
| Feb 3, 2015 MForm 4 → | Mar 20, 2:01 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 86,400 | — | — | 316,202 | — | plan? late |
| Feb 3, 2015 SForm 4 → | Feb 5, 7:20 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 23,348 | $47.77 | $1,115,326 | 230,933 | −9.18% | plan? |
| Feb 3, 2015 AForm 4 → | Feb 5, 7:20 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 98,252 | — | — | 252,975 | — | plan? |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Oct 25, 2018 AMForm 4 → | Oct 29, 7:16 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 75,960 | — | — | 48,000 | — | |
| Feb 7, 2017 MForm 4 → | Feb 8, 5:17 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 4,876 | — | — | 56,174 | — | |
| Oct 28, 2016 MForm 4 → | Nov 1, 6:51 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 14,628 | — | — | 61,050 | — | |
| Dec 31, 2015 AForm 4 → | Jan 5, 2016, 6:21 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 75,678 | — | — | 75,678 | — | |
| Dec 17, 2015 MForm 4 → | Dec 21, 5:12 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 43,200 | — | — | 0 | — | |
| Jun 11, 2015 MForm 4 → | Jun 12, 6:07 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 8,234 | — | — | 0 | — | |
| Feb 5, 2015 MForm 4 → | Feb 9, 8:26 pm EST | MONOLITHIC POWER SYSTEMS INCMPWR | 1,103 | — | — | 0 | — | |
| Feb 3, 2015 MForm 4 → | Mar 20, 2:01 pm EDT | MONOLITHIC POWER SYSTEMS INCMPWR | 86,400 | — | — | 43,200 | — | late |