INVESTABOT
Equity Research
XNAS · SEMICONDUCTORS & RELATED DEVICES
Includes notes from domestic 8-K and foreign private issuer 6-K disclosures.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-09-28. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction. At…
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-08-05. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-08-11. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-08-24. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-08-17. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-07-15. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction. At…
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-05-05. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-05-05. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-06-01. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction. At…
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-05-28. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 2 Form 144 pre-sale notices filed on 2026-05-26. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-05-22. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 2 Form 144 pre-sale notices filed on 2026-05-18. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 1 Form 144 pre-sale notice filed on 2026-05-15. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction. At…
TL;DR: Monolithic Power Systems delivered record quarterly revenue of $804.2 million in Q1 2026, up 26.1% from $637.6 million in the year-ago quarter.
Monolithic Power Systems (MPWR) had 4 Form 144 pre-sale notices filed on 2026-05-06. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a completed transaction.
Monolithic Power Systems (MPWR) had 3 Form 144 pre-sale notices filed between 2026-04-06 and 2026-05-01. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a…
Monolithic Power Systems, Inc. (MPWR) had 3 Form 144 pre-sale notices filed between 2026-04-06 and 2026-05-01. Form 144 filings signal an insider's intent to sell securities under SEC Rule 144 — they do not confirm a…
open-market Form 4 only - grants, exercises, tax withholding excluded
0 buyers - 4 unique sellers · Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| September 28, 2026 | Hsing Michael | CEO | SELL | -130 | $1,357 | ~$0.2M |
| September 28, 2026 | Hsing Michael | CEO | SELL | -10,967 | $1,351 | ~$14.8M |
| September 28, 2026 | Hsing Michael | CEO | SELL | -6,343 | $1,347 | ~$8.5M |
| September 28, 2026 | Hsing Michael | CEO | SELL | -5,783 | $1,344 | ~$7.8M |
| September 28, 2026 | Hsing Michael | CEO | SELL | -2,949 | $1,339 | ~$3.9M |
| September 28, 2026 | Hsing Michael | CEO | SELL | -1,111 | $1,333 | ~$1.5M |
| September 28, 2026 | Hsing Michael | CEO | SELL | -2,121 | $1,329 | ~$2.8M |
| September 28, 2026 | Hsing Michael | CEO | SELL | -596 | $1,323 | ~$0.8M |
| August 31, 2026 | Tseng Saria | EVP & General Counsel | GIFT | -2,000 | — | — |
| August 31, 2026 | Tseng Saria | EVP & General Counsel | GIFT | 2,000 | — | — |
| August 24, 2026 | Chang Kuo Wei Herbert | — | SELL | -50 | $1,282 | ~$64K |
| August 24, 2026 | Dean Robert W Ii | Interim CFO | SELL | -32 | $1,298 | ~$42K |
| August 24, 2026 | Dean Robert W Ii | Interim CFO | OTHER | -5 | — | — |
| August 17, 2026 | Dean Robert W Ii | Interim CFO | SELL | -6 | $1,414 | ~$8K |
| August 11, 2026 | Chang Kuo Wei Herbert | — | SELL | -50 | $1,420 | ~$71K |
| August 5, 2026 | Dean Robert W Ii | Interim CFO | SELL | -105 | $1,344 | ~$0.1M |
| August 4, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | GIFT | -25,000 | — | — |
| August 4, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | GIFT | 25,000 | — | — |
| August 3, 2026 | Sciammas Maurice | EVP, WW Sales & Marketing | SELL | -30 | $1,344 | ~$40K |
| July 25, 2026 | Dean Robert W Ii | Interim CFO | GRANT | 1,359 | — | — |
| Date | Filer | Relationship | Est. shares | Filing |
|---|---|---|---|---|
| September 28, 2026 | Michael Hsing | — | 30,000 | SEC |
| August 24, 2026 | Dean Robert W Ii | — | 32 | SEC |
| August 17, 2026 | Dean Robert W Ii | — | 6 | SEC |
| August 11, 2026 | Kuo Wei Chang | — | 100 | SEC |
| August 5, 2026 | Robert Dean | — | 105 | SEC |
| July 15, 2026 | Maurice Sciammas | — | 15,000 | SEC |
| June 1, 2026 | Theodore Bernhard Blegen | — | 3,001 | SEC |
| May 28, 2026 | Saria Tseng | — | 7,565 | SEC |
| May 26, 2026 | Dean Robert W Ii | — | 22 | SEC |
| May 26, 2026 | Jeff Zhou | — | 486 | SEC |