BLEGEN THEODORE — SEC Form 4 filings
SEC reporting owner CIK 1415033. 30 Form 4 filings on record with FilingPulse; latest filed 2026-02-10.
Transaction summary — filings shown
Covers all 30 filings on record, filed 2024-02-05 to 2026-02-10. 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): 232 legs across 27 filings — 83,131 shares, $75,208,572 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 3.
- Largest priced transaction: sale of 21,725 shares @ $1,171.16 ($25,443,531) 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 and CFO | 30 | — | 232 legs · 83,131 sh · $75,208,572 | 3 |
Form 4 filings — BLEGEN THEODORE
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-02-10 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 21,725 @ $1,171.16 | EDGAR |
| 2026-02-05 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Grant/award (A): 38,745 @ $0 | EDGAR |
| 2026-02-04 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 220 @ $1,110.58 · Sale (S): 40 @ $1,117.11 · Sale (S): 80 @ $1,120.77 · Sale (S): 40 @ $1,122.56 · Sale (S): 200 @ $1,126.58 · Sale (S): 80 @ $1,127.39 · +11 more | EDGAR |
| 2026-01-06 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 80 @ $927.61 · Sale (S): 194 @ $930.86 · Sale (S): 80 @ $933.64 · Sale (S): 40 @ $934.74 · Sale (S): 80 @ $935.33 · Sale (S): 120 @ $936.50 · +9 more | EDGAR |
| 2025-12-02 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 40 @ $899.73 · Sale (S): 40 @ $900.88 · Sale (S): 80 @ $901.88 · Sale (S): 40 @ $902.31 · Sale (S): 120 @ $904.38 · Sale (S): 80 @ $906.84 · +4 more | EDGAR |
| 2025-11-04 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 204 @ $1,013.62 · Sale (S): 135 @ $1,014.47 · Sale (S): 80 @ $1,016.51 · Sale (S): 6 @ $1,017.78 · Sale (S): 180 @ $1,018.01 · Sale (S): 181 @ $1,019.49 · +16 more | EDGAR |
| 2025-10-31 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Tax withholding (F): 48,298 @ $1,096.63 | EDGAR |
| 2025-10-28 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Grant/award (A): 87,690 @ $0 | EDGAR |
| 2025-10-01 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 6 @ $902.61 · Sale (S): 40 @ $903.82 · Sale (S): 60 @ $904 · Sale (S): 115 @ $905.37 · Sale (S): 250 @ $907.36 · Sale (S): 80 @ $909.52 · +7 more | EDGAR |
| 2025-09-03 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $803.43 · Sale (S): 100 @ $804.64 · Sale (S): 200 @ $806.57 · Sale (S): 100 @ $808.53 · Sale (S): 500 @ $811.45 · Sale (S): 100 @ $812.84 · +8 more | EDGAR |
| 2025-08-04 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 3,000 @ $750 | EDGAR |
| 2025-07-02 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 6,000 @ $750 | EDGAR |
| 2025-02-12 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 532 @ $717.10 | EDGAR |
| 2024-12-11 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 2,500 @ $600 | EDGAR |
| 2024-11-13 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 734 @ $765.15 | EDGAR |
| 2024-11-05 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 150 @ $764.54 · Sale (S): 50 @ $765.13 · Sale (S): 208 @ $766.22 · Sale (S): 183 @ $767.82 · Sale (S): 175 @ $768.08 · Sale (S): 50 @ $770.46 · +7 more | EDGAR |
| 2024-10-02 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 167 @ $892.66 · Sale (S): 296 @ $894.42 · Sale (S): 28 @ $896.83 · Sale (S): 108 @ $897.58 · Sale (S): 166 @ $902.30 · Sale (S): 56 @ $903.33 · +13 more | EDGAR |
| 2024-09-03 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 148 @ $893.29 · Sale (S): 201 @ $894.56 · Sale (S): 170 @ $895.31 · Sale (S): 123 @ $896.36 · Sale (S): 119 @ $897.75 · Sale (S): 5 @ $898.77 · +15 more | EDGAR |
| 2024-08-12 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 728 @ $778.39 | EDGAR |
| 2024-08-02 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 350 @ $842.43 · Sale (S): 200 @ $848.85 · Sale (S): 300 @ $851.63 · Sale (S): 100 @ $852.80 · Sale (S): 360 @ $853.66 · Sale (S): 228 @ $854.10 · +3 more | EDGAR |
| 2024-07-24 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 2,580 @ $831.58 | EDGAR |
| 2024-07-02 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 307 @ $794.59 · Sale (S): 200 @ $798.56 · Sale (S): 100 @ $803.07 · Sale (S): 111 @ $805.39 · Sale (S): 1,687 @ $806.39 · Sale (S): 95 @ $807.88 | EDGAR |
| 2024-06-05 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 96 @ $716.84 · Sale (S): 60 @ $717.35 · Sale (S): 72 @ $719.60 · Sale (S): 14 @ $720.26 · Sale (S): 16 @ $721.39 · Sale (S): 179 @ $722.26 · +14 more | EDGAR |
| 2024-05-09 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 737 @ $689.98 | EDGAR |
| 2024-05-03 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 61 @ $658.90 · Sale (S): 300 @ $659.38 · Sale (S): 600 @ $660.49 · Sale (S): 100 @ $661.07 · Sale (S): 319 @ $662.37 · Sale (S): 200 @ $664.54 · +4 more | EDGAR |
| 2024-04-03 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 100 @ $670.56 · Sale (S): 100 @ $671.82 · Sale (S): 100 @ $672.25 · Sale (S): 500 @ $673.45 · Sale (S): 400 @ $674.55 · Sale (S): 236 @ $675.66 · +6 more | EDGAR |
| 2024-03-04 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 200 @ $718.35 · Sale (S): 200 @ $719.48 · Sale (S): 80 @ $720.75 · Sale (S): 180 @ $721.27 · Sale (S): 80 @ $724.42 · Sale (S): 100 @ $725.51 · +6 more | EDGAR |
| 2024-02-09 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 728 @ $680 | EDGAR |
| 2024-02-07 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 867 @ $641 | EDGAR |
| 2024-02-05 | 4 | MONOLITHIC POWER SYSTEMS INC (MPWR) | Sale (S): 868 @ $600.37 · Sale (S): 21 @ $601.99 · Sale (S): 920 @ $603.50 · Sale (S): 204 @ $604.38 · Sale (S): 101 @ $605.06 · Sale (S): 100 @ $606.70 · +2 more | 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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