CHANG KUO WEI HERBERT — SEC Form 4 filings
SEC reporting owner CIK 1192171. 15 Form 4 filings on record with FilingPulse; latest filed 2026-08-25.
Transaction summary — filings shown
Covers all 15 filings on record, filed 2024-02-08 to 2026-08-25. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 14 legs across 12 filings — 1,650 shares, $1,323,646 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 3.
- Largest priced transaction: sale of 250 shares @ $750.00 ($187,500) in MONOLITHIC POWER SYSTEMS, INC., filed 2024-02-23.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| MONOLITHIC POWER SYSTEMS, INC. (MPWR) | Director | 15 | — | 14 legs · 1,650 sh · $1,323,646 | 3 |
Form 4 filings — CHANG KUO WEI HERBERT
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-25 | 4 | MONOLITHIC POWER SYSTEMS, INC. (MPWR) | Sale (S): 50 @ $1,281.57 | EDGAR |
| 2026-08-13 | 4 | MONOLITHIC POWER SYSTEMS, INC. (MPWR) | Sale (S): 50 @ $1,420 | EDGAR |
| 2026-02-05 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Grant/award (A): 189 @ $0 | EDGAR |
| 2025-11-25 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $896.97 | EDGAR |
| 2025-11-24 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $873.97 | EDGAR |
| 2025-05-13 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 50 @ $738 | EDGAR |
| 2025-05-12 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $698 | EDGAR |
| 2025-05-09 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $650 | EDGAR |
| 2025-02-06 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Grant/award (A): 335 @ $0 | EDGAR |
| 2024-08-15 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $888.88 · Sale (S): 100 @ $898 | EDGAR |
| 2024-05-22 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 200 @ $750 | EDGAR |
| 2024-05-15 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $730 · Sale (S): 100 @ $740 | EDGAR |
| 2024-02-29 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 250 @ $706.34 | EDGAR |
| 2024-02-23 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 250 @ $750 | EDGAR |
| 2024-02-08 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Grant/award (A): 348 @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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