MONOLITHIC POWER SYSTEMS INC — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| BLEGEN THEODORE | CFO | Sale | 930 | $467.22 | $434,515 | 132,238 | Apr 1, 2022 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Gift | 1,699 | — | — | 1,699 | Apr 1, 2022 |
| BLEGEN THEODORE | CFO | Sale | 80 | $453.91 | $36,313 | 133,570 | Feb 22, 2022 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 4,420 | $467.23 | $2,065,157 | 295,047 | Feb 16, 2022 |
| BLEGEN THEODORE | CFO | Sale | 1,387 | $429.60 | $595,855 | 134,652 | Feb 14, 2022 |
| Hsing Michael | CEO | Sale | 6,421 | $429.60 | $2,758,462 | 1,059,927 | Feb 14, 2022 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Sale | 1,663 | $429.60 | $714,425 | 273,597 | Feb 14, 2022 |
| Tseng Saria | VP & General Counsel | Sale | 1,663 | $429.60 | $714,425 | 275,546 | Feb 14, 2022 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 1,663 | $429.60 | $714,425 | 299,475 | Feb 14, 2022 |
| CHANG KUO WEI HERBERT | — | Award / Grant | 542 | — | — | 2,356 | Feb 8, 2022 |
| Elmiger Eugen J | — | Award / Grant | 542 | — | — | 20,060 | Feb 8, 2022 |
| Lee Victor K | — | Award / Grant | 542 | — | — | 29,414 | Feb 8, 2022 |
| Zhou Jeff | — | Award / Grant | 542 | — | — | 6,051 | Feb 8, 2022 |
| Moyer James C | — | Award / Grant | 542 | — | — | 234,383 | Feb 8, 2022 |
| Martinez Carintia | — | Award / Grant | 542 | — | — | 1,125 | Feb 8, 2022 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 1,700 | $401.12 | $681,904 | 301,138 | Feb 7, 2022 |
| Hsing Michael | CEO | Sale | 7,663 | $401.12 | $3,073,783 | 1,066,348 | Feb 7, 2022 |
| BLEGEN THEODORE | CFO | Sale | 1,117 | $401.12 | $448,051 | 136,039 | Feb 7, 2022 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Sale | 1,700 | $401.12 | $681,904 | 275,260 | Feb 7, 2022 |
| Tseng Saria | VP & General Counsel | Sale | 1,700 | $401.12 | $681,904 | 277,209 | Feb 7, 2022 |
| BLEGEN THEODORE | CFO | Award / Grant | 27,174 | — | — | 143,492 | Feb 3, 2022 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Award / Grant | 39,699 | — | — | 285,104 | Feb 3, 2022 |
| Hsing Michael | CEO | Award / Grant | 153,324 | — | — | 1,103,649 | Feb 3, 2022 |
| Tseng Saria | VP & General Counsel | Award / Grant | 39,699 | — | — | 286,302 | Feb 3, 2022 |
| Xiao Deming | Pres. of MPS Asia Operations | Award / Grant | 39,699 | — | — | 310,231 | Feb 3, 2022 |
| BLEGEN THEODORE | CFO | Sale | 60 | $408.89 | $24,533 | 117,517 | Jan 20, 2022 |
| Hsing Michael | CEO | Sale | 10,960 | $490.87 | $5,379,935 | 950,325 | Jan 3, 2022 |
| Tseng Saria | VP & General Counsel | Sale | 4,305 | $490.87 | $2,113,195 | 246,603 | Jan 3, 2022 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Sale | 4,305 | $490.87 | $2,113,195 | 245,405 | Jan 3, 2022 |
| BLEGEN THEODORE | CFO | Sale | 905 | $490.87 | $444,237 | 118,215 | Jan 3, 2022 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 4,305 | $490.87 | $2,113,195 | 270,532 | Jan 3, 2022 |
| BLEGEN THEODORE | CFO | Sale | 1,897 | $474.35 | $899,842 | 119,120 | Dec 20, 2021 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 4,366 | $560.00 | $2,444,960 | 274,837 | Nov 30, 2021 |
| BLEGEN THEODORE | CFO | Sale | 60 | $578.12 | $34,687 | 121,062 | Nov 22, 2021 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 427 | $580.00 | $247,660 | 279,203 | Nov 22, 2021 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Gift | 11,310 | — | — | 11,310 | Nov 15, 2021 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 1,625 | $553.42 | $899,307 | 279,630 | Nov 12, 2021 |
| BLEGEN THEODORE | CFO | Sale | 1,364 | $553.42 | $754,865 | 122,914 | Nov 12, 2021 |
| Hsing Michael | CEO | Sale | 6,273 | $553.42 | $3,471,604 | 961,285 | Nov 12, 2021 |
| Tseng Saria | VP & General Counsel | Sale | 1,625 | $553.42 | $899,307 | 250,907 | Nov 12, 2021 |
| Moyer James C | — | Sale | 2,000 | $555.31 | $1,110,620 | 64,823 | Nov 12, 2021 |
| Hsing Michael | CEO | Sale | 7,813 | $548.27 | $4,283,634 | 987,155 | Nov 8, 2021 |
| BLEGEN THEODORE | CFO | Sale | 1,460 | $548.27 | $800,474 | 127,085 | Nov 8, 2021 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Sale | 2,022 | $548.27 | $1,108,602 | 278,831 | Nov 8, 2021 |
| Xiao Deming | Pres. of MPS Asia Operations | Sale | 2,022 | $548.27 | $1,108,602 | 281,255 | Nov 8, 2021 |
| Tseng Saria | VP & General Counsel | Disposition | 2,022 | $548.27 | $1,108,602 | 257,409 | Nov 8, 2021 |
| BLEGEN THEODORE | CFO | Sale | 1,897 | $496.59 | $942,031 | 125,738 | Oct 20, 2021 |
| BLEGEN THEODORE | CFO | Sale | 910 | $476.16 | $433,306 | 127,635 | Oct 1, 2021 |
| Hsing Michael | CEO | Sale | 11,020 | $476.16 | $5,247,283 | 975,371 | Oct 1, 2021 |
| Sciammas Maurice | Sr. V.P.of Sales and Marketing | Sale | 4,330 | $476.16 | $2,061,773 | 275,977 | Oct 1, 2021 |