Tseng Saria — SEC Form 4 filings
SEC reporting owner CIK 1312593. 27 Form 4 filings on record with FilingPulse; latest filed 2026-09-02.
Transaction summary — filings shown
Covers all 27 filings on record, filed 2024-01-10 to 2026-09-02. 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): 94 legs across 22 filings — 200,407 shares, $202,795,454 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 8.
- Largest priced transaction: sale of 22,875 shares @ $1,171.16 ($26,790,370) in MONOLITHIC POWER SYSTEMS, INC., filed 2026-02-10.
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) | EVP & General Counsel | 27 | — | 94 legs · 200,407 sh · $202,795,454 | 8 |
Form 4 filings — Tseng Saria
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-09-02 | 4 | MONOLITHIC POWER SYSTEMS, INC. (MPWR) | Gift (G): 2,000 @ $0 · Gift (G): 2,000 @ $0 | EDGAR |
| 2026-05-29 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 7,565 @ $1,700 | EDGAR |
| 2026-05-27 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Gift (G): 200 @ $0 · Sale (S): 5,000 @ $1,586.43 | EDGAR |
| 2026-04-10 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 560 @ $1,266.48 · Sale (S): 360 @ $1,270.29 · Sale (S): 240 @ $1,279.55 · Sale (S): 120 @ $1,287.12 · Sale (S): 400 @ $1,292.08 · Sale (S): 800 @ $1,302.52 · +4 more | EDGAR |
| 2026-04-08 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 244 @ $1,139.96 · Sale (S): 556 @ $1,144.42 · Sale (S): 480 @ $1,149.05 · Sale (S): 560 @ $1,159.62 · Sale (S): 684 @ $1,165.66 · Sale (S): 2,036 @ $1,170.38 · +2 more | EDGAR |
| 2026-04-03 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 576 @ $1,131.24 · Sale (S): 184 @ $1,132.15 · Sale (S): 160 @ $1,134.14 · Sale (S): 188 @ $1,135.91 · Sale (S): 292 @ $1,136.99 | EDGAR |
| 2026-04-01 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 5,154 @ $1,000.81 · Sale (S): 9,080 @ $1,005.18 · Sale (S): 3,360 @ $1,009.63 · Sale (S): 3,194 @ $1,017.22 · Sale (S): 2,200 @ $1,023 · Sale (S): 2,440 @ $1,029.21 · +2 more | EDGAR |
| 2026-02-10 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 22,875 @ $1,171.16 | EDGAR |
| 2026-02-05 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Grant/award (A): 57,170 @ $0 | EDGAR |
| 2025-12-30 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Gift (G): 1,000 @ $0 · Gift (G): 1,000 @ $0 | EDGAR |
| 2025-11-28 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 385 @ $894.54 · Sale (S): 1,625 @ $895.63 · Sale (S): 2,066 @ $896.37 · Sale (S): 754 @ $897.54 · Sale (S): 145 @ $898.38 · Sale (S): 320 @ $899.37 · +13 more | EDGAR |
| 2025-11-28 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 240 @ $922.78 · Sale (S): 1,200 @ $923.54 · Sale (S): 1,327 @ $924.32 · Sale (S): 1,126 @ $925.55 · Sale (S): 10,360 @ $926.02 · Sale (S): 1,845 @ $927.41 · +3 more | EDGAR |
| 2025-10-31 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Tax withholding (F): 54,543 @ $1,096.63 | EDGAR |
| 2025-10-28 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Grant/award (A): 135,520 @ $0 | EDGAR |
| 2025-10-24 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 1,300 @ $1,087.62 | EDGAR |
| 2025-10-17 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 14,028 @ $1,016.18 · Sale (S): 1,499 @ $1,021.26 · Sale (S): 1,313 @ $1,030.81 | EDGAR |
| 2025-09-23 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 14,510 @ $914.45 | EDGAR |
| 2025-02-12 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 663 @ $717.10 | EDGAR |
| 2024-11-13 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 866 @ $765.14 | EDGAR |
| 2024-08-12 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 859 @ $778.39 | EDGAR |
| 2024-07-24 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 3,205 @ $831.58 | EDGAR |
| 2024-07-02 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 1,098 @ $794.69 · Sale (S): 220 @ $795.95 · Sale (S): 150 @ $796.70 · Sale (S): 600 @ $798.72 · Sale (S): 199 @ $799.94 · Sale (S): 24 @ $800.62 · +12 more | EDGAR |
| 2024-07-02 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 1,858 @ $824.65 | EDGAR |
| 2024-05-09 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 869 @ $690.02 | EDGAR |
| 2024-02-09 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 859 @ $680 | EDGAR |
| 2024-02-07 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 982 @ $641 | EDGAR |
| 2024-01-10 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 1,390 @ $600 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-10 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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