Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MONOLITHIC POWER SYSTEMS, INC.MPWR · Entity 877 | EVP and CFO | February 06, 2026 | February 10, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
MONOLITHIC POWER SYSTEMS, INC.
Report date February 06, 2026 · Filed February 10, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 82,353 |
Reported balance
After 2026-02-06 transaction · row 1
1 source rowRow 1 · 2026-02-06 · Sale · Disposed 21,725 · Balance 82,353 F1: The reported sales were to cover taxes upon the release of restricted stock units, as required by the Company's equity incentive plan. |
| Common StockSEC Table I · non-derivative | IndirectIrrevocable Trust FBO Sarah N. Blegen | 5,331 |
Reported balance
Holding disclosure · report date 2026-02-06 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 5,331 |
| Common StockSEC Table I · non-derivative | IndirectIrrevocable Trust FBO Theodore F. Blegen | 5,331 |
Reported balance
Holding disclosure · report date 2026-02-06 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 5,331 |
Filing footnotes · ownership attribution and instrument terms
F1: The reported sales were to cover taxes upon the release of restricted stock units, as required by the Company's equity incentive plan.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 210 | $1,030.00 | $216,300.00 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 16 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,740 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 246 | $1,029.45 | $253,244.70 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 15 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,950 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F13 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,029.14 to $1,029.77. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 240 | $1,028.43 | $246,823.20 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 14 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 75,196 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F12 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,028.00 to $1,028.85. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 200 | $1,027.49 | $205,498.00 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 13 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 75,436 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F11 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,027.03 to $1,027.89. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 43 | $1,025.91 | $44,114.13 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 12 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 75,636 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,025.00 to $1,025.98. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 208 | $1,024.86 | $213,170.88 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 11 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 75,679 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,024.02 to $1,024.99. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 291 | $1,023.32 | $297,786.12 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 10 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 75,887 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,023.07 to $1,023.98. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $1,022.28 | $40,891.20 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 9 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,178 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 168 | $1,021.28 | $171,575.04 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 8 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,218 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,021.04 to $1,021.32. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 160 | $1,020.30 | $163,248.00 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 7 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,386 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,020.20 to $1,020.40. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 181 | $1,019.49 | $184,527.69 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 6 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,546 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,019.10 to $1,019.68. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 180 | $1,018.01 | $183,241.80 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 5 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,727 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 6 | $1,017.78 | $6,106.68 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 4 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,907 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $1,016.51 | $81,320.80 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 3 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,913 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,016.43 to $1,016.59. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 135 | $1,014.47 | $136,953.45 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 2 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 76,993 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,014.12 to $1,014.64. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| November 03, 2025 Filed Nov 5, 2025 00:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 204 | $1,013.62 | $206,778.48 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 77,128 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,013.45 to $1,013.75. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 30, 2025 Filed Oct 31, 2025 20:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | Tax withholdingCommon Stock | 48,298 | $1,096.63 | $52,965,035.74 |
DisclosureSEC source: 0001214659-25-015709 · marketforms-71175.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 77,332 F1 · shares: The sales transaction reported in this Form 4 represents shares of common stock withheld by the Company to satisfy the income tax obligations in connection with the earnout and vesting of the market-based restricted stock units granted in October 2022, previously reported in a Form 4. Read SEC document |
| October 25, 2025 Filed Oct 29, 2025 01:38 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GrantCommon Stock | 87,690 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-25-015477 · marketforms-71127.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 125,630 F1 · shares: On October 25, 2022, the reporting person was granted market-based restricted stock units ("MSUs") subject to the achievement of five stock price targets and relative total stockholder return percentile rank over a three-year performance and vesting period. On October 25, 2025, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance criteria for the MSUs, which resulted in 87,690 shares being awarded to the reporting person. All of the shares fully vested on October 25, 2025, pursuant to the grant agreement. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 160 | $917.17 | $146,747.20 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 13 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 37,940 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F11 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $917.08 to $917.28. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. F12 · balance_after: Ending balance includes 1 share acquired on August 15, 2025 through the Company's qualified ESPP program. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 580 | $916.37 | $531,494.60 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 12 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 38,099 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $916.09 to $916.49. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 440 | $915.43 | $402,789.20 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 11 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 38,679 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $915.01 to $915.68. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 390 | $914.71 | $356,736.90 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 10 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 39,119 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $914.59 to $914.77. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 138 | $913.87 | $126,114.06 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 9 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 39,509 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $913.84 to $913.87. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 676 | $912.73 | $617,005.48 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 8 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 39,647 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $912.39 to $912.82. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 65 | $911.27 | $59,232.55 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 7 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,323 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $911.04 to $911.66. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $909.52 | $72,761.60 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 6 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,388 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $909.22 to $909.82. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 250 | $907.36 | $226,840.00 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 5 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,468 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $907.30 to $907.37. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 115 | $905.37 | $104,117.55 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 4 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,718 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $905.35 to $905.40. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 60 | $904.00 | $54,240.00 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 3 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,833 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $903.82 | $36,152.80 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 2 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,893 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| October 01, 2025 Filed Oct 2, 2025 00:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 6 | $902.61 | $5,415.66 |
DisclosureSEC source: 0001214659-25-014464 · marketforms-70888.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,933 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 126 | $822.59 | $103,646.34 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 14 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 40,939 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $822.31 to $822.72. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 200 | $821.75 | $164,350.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 13 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 41,065 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $821.64 to $821.86. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 200 | $820.70 | $164,140.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 12 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 41,265 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $820.50 to $820.88. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 100 | $818.44 | $81,844.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 11 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 41,465 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 574 | $816.47 | $468,653.78 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 10 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 41,565 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $816.20 to $816.76. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 400 | $815.39 | $326,156.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 9 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 42,139 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $815.10 to $815.74. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 200 | $814.75 | $162,950.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 8 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 42,539 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $814.61 to $814.88. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 100 | $813.09 | $81,309.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 7 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 42,739 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 100 | $812.84 | $81,284.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 6 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 42,839 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 500 | $811.45 | $405,725.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 5 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 42,939 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $811.11 to $811.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 100 | $808.53 | $80,853.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 4 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 43,439 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $808.38 to $808.63. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 200 | $806.57 | $161,314.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 3 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 43,539 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $806.25 to $806.89. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 100 | $804.64 | $80,464.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 2 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 43,739 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| September 02, 2025 Filed Sep 3, 2025 22:39 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 100 | $803.43 | $80,343.00 |
DisclosureSEC source: 0001214659-25-013303 · marketforms-70492.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 43,839 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. Read SEC document |
| August 01, 2025 Filed Aug 4, 2025 23:31 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 3,000 | $750.00 | $2,250,000.00 |
DisclosureSEC source: 0001214659-25-011467 · marketforms-70182.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 43,939 Read SEC document |
| July 01, 2025 Filed Jul 2, 2025 15:46 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 6,000 | $750.00 | $4,500,000.00 |
DisclosureSEC source: 0001214659-25-009933 · marketforms-70024.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 46,939 F1 · balance_after: Ending balance includes 27 shares acquired on February 17, 2025 through the Company's qualified ESPP program. Read SEC document |
| February 10, 2025 Filed Feb 12, 2025 20:43 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 532 | $717.10 | $381,497.57 |
DisclosureSEC source: 0001214659-25-002480 · marketforms-68075.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 52,912 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| December 09, 2024 Filed Dec 12, 2024 00:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,500 | $600.00 | $1,500,000.00 |
DisclosureSEC source: 0001214659-24-020316 · marketforms-67547.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 53,444 Read SEC document |
| November 08, 2024 Filed Nov 13, 2024 22:13 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 734 | $765.15 | $561,620.10 |
DisclosureSEC source: 0001214659-24-018887 · marketforms-67306.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 55,944 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.