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 |
|---|---|---|---|---|---|---|
| February 06, 2026 Filed Feb 10, 2026 23:57 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 21,725 | $1,171.16 | $25,443,531.38 |
DisclosureSEC source: 0001214659-26-001448 · marketforms-72090.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 82,353 F1 · shares: The reported sales were to cover taxes upon the release of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| February 03, 2026 Filed Feb 6, 2026 00:35 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GrantCommon Stock | 38,745 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-26-001255 · marketforms-72009.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 104,078 F1 · shares: On February 7, 2023, the reporting person was granted performance-based restricted stock units ("PSUs") subject to the achievement of performance conditions over a three-year performance period. On February 3, 2026, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance criteria for the PSUs, which resulted in 38,745 shares being awarded to the reporting person, subject to tax withholdings. All of the shares fully vested and were released on February 3, 2026, pursuant to the grant agreement. Read SEC document |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $1,139.49 | $91,159.20 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 17 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 65,333 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F14 · 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 $1,139.44 to $1,139.54. 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. F15 · balance_after: Ending balance has been adjusted for a one share rounding difference. Read SEC document |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $1,137.81 | $91,024.80 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 16 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 65,412 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 120 | $1,136.35 | $136,362.00 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 15 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 65,492 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 $1,136.18 to $1,136.69. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 120 | $1,135.49 | $136,258.80 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 14 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 65,612 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 $1,135.09 to $1,135.71. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 241 | $1,134.41 | $273,392.81 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 13 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 65,732 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 $1,134.00 to $1,134.78. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 379 | $1,133.47 | $429,585.13 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 12 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 65,973 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 $1,133.00 to $1,133.86. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 322 | $1,132.67 | $364,719.74 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 11 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 66,352 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 $1,132.33 to $1,132.84. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 198 | $1,131.70 | $224,076.60 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 10 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 66,674 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 $1,131.38 to $1,131.91. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 320 | $1,130.48 | $361,753.60 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 9 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 66,872 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 $1,130.18 to $1,130.95. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 240 | $1,129.28 | $271,027.20 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 8 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 67,192 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 $1,129.07 to $1,129.60. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 240 | $1,128.43 | $270,823.20 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 7 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 67,432 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 $1,128.32 to $1,128.64. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $1,127.39 | $90,191.20 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 6 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 67,672 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 $1,127.28 to $1,127.49. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 200 | $1,126.58 | $225,316.00 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 5 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 67,752 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 $1,126.50 to $1,126.71. 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $1,122.56 | $44,902.40 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 4 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 67,952 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $1,120.77 | $89,661.60 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 3 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 67,992 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $1,117.11 | $44,684.40 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 2 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 68,072 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 |
| February 02, 2026 Filed Feb 4, 2026 15:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 220 | $1,110.58 | $244,327.60 |
DisclosureSEC source: 0001214659-26-001149 · marketforms-71999.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 68,112 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 $1,110.14 to $1,110.68. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $946.62 | $75,729.60 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 15 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 68,332 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $945.00 | $37,800.00 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 14 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 68,412 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 650 | $944.35 | $613,827.50 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 13 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 68,452 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 $944.01 to $944.51. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 539 | $943.71 | $508,659.69 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 12 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 69,102 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 $943.37 to $943.85. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 74 | $942.42 | $69,739.08 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 11 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 69,641 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 $942.01 to $942.77. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 406 | $941.60 | $382,289.60 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 10 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 69,715 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 $941.00 to $941.67. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $940.03 | $37,601.20 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 9 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,121 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 117 | $939.75 | $109,950.75 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 8 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,161 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 $939.51 to $939.99. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 460 | $938.52 | $431,719.20 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 7 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,278 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 $938.14 to $938.69. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 120 | $936.50 | $112,380.00 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 6 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,738 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $935.33 | $74,826.40 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 5 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,858 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 $935.08 to $935.57. 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $934.74 | $37,389.60 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 4 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,938 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $933.64 | $74,691.20 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 3 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 70,978 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 194 | $930.86 | $180,586.84 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 2 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 71,058 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 |
| January 02, 2026 Filed Jan 6, 2026 21:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $927.61 | $74,208.80 |
DisclosureSEC source: 0001214659-26-000197 · marketforms-71761.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 71,252 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 56 | $911.59 | $51,049.04 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 10 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 71,332 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,984 | $909.00 | $1,803,456.00 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 9 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 71,388 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 480 | $908.69 | $436,171.20 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 8 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 73,372 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 $908.52 to $908.75. 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $907.59 | $72,607.20 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 7 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 73,852 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 $907.49 to $907.68. 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $906.84 | $72,547.20 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 6 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 73,932 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 120 | $904.38 | $108,525.60 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 5 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,012 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $902.31 | $36,092.40 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 4 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,132 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 80 | $901.88 | $72,150.40 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 3 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,172 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $900.88 | $36,035.20 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 2 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,252 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 |
| December 01, 2025 Filed Dec 3, 2025 00:52 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 40 | $899.73 | $35,989.20 |
DisclosureSEC source: 0001214659-25-017534 · marketforms-71423.xml · nonDerivative · entry 1 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,292 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 | 47 | $1,038.41 | $48,805.27 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 22 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,332 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F15 · 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 $1,038.40 to $1,038.42. 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 | $1,035.25 | $41,410.00 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 21 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,379 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 | 40 | $1,034.99 | $41,399.60 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 20 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,419 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 | $1,033.00 | $82,640.00 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 19 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,459 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 | 184 | $1,032.07 | $189,900.88 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 18 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,539 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025. F14 · 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 $1,032.00 to $1,032.18. 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 | 17 | $1,031.86 | $17,541.62 |
DisclosureSEC source: 0001214659-25-015933 · marketforms-71210.xml · nonDerivative · entry 17 BLEGEN THEODORE · CIK 0001415033 · EVP and CFO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 74,723 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 |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.