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BLEGEN THEODORE

Disclosed activity across 1 company

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67027
SEC CIK
0001415033

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
MONOLITHIC POWER SYSTEMS, INC.MPWR · Entity 877EVP and CFOFebruary 06, 2026February 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 / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect82,353 Reported balance After 2026-02-06 transaction · row 1
1 source row

Row 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-derivativeIndirectIrrevocable Trust FBO Sarah N. Blegen5,331 Reported balance Holding disclosure · report date 2026-02-06 · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · Balance 5,331

Common StockSEC Table I · non-derivativeIndirectIrrevocable Trust FBO Theodore F. Blegen5,331 Reported balance Holding disclosure · report date 2026-02-06 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 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

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Purchases/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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 20, 2021 Filed Sep 21, 2021 21:53 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 400 $482.12 $192,848.00
Disclosure

SEC source: 0001214659-21-009704 · marketforms-53872.xml · nonDerivative · entry 2

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,502

F1 · shares: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $481.61 to $482.52. 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 20, 2021 Filed Sep 21, 2021 21:53 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 540 $481.08 $259,783.20
Disclosure

SEC source: 0001214659-21-009704 · marketforms-53872.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,902

F1 · shares: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $480.61 to $481.54. 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.

Read SEC document
August 20, 2021 Filed Aug 23, 2021 20:57 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,897 $469.24 $890,148.28
Disclosure

SEC source: 0001214659-21-008912 · marketforms-53632.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,442

F1 · shares: Shares sold pursuant to the reporting person's 10b5-1 plan.

Read SEC document
August 12, 2021 Filed Aug 16, 2021 20:45 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,379 $457.10 $630,340.90
Disclosure

SEC source: 0001214659-21-008701 · marketforms-53580.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 132,339

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
August 09, 2021 Filed Aug 11, 2021 21:09 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,474 $459.12 $676,742.88
Disclosure

SEC source: 0001214659-21-008384 · marketforms-53495.xml · nonDerivative · entry 4

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 133,718

F2 · 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
July 30, 2021 Filed Aug 11, 2021 21:09 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 GiftCommon Stock 5,331 $0.00 $0.00
Disclosure

SEC source: 0001214659-21-008384 · marketforms-53495.xml · nonDerivative · entry 3

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Indirect · Irrevocable Trust FBO Theodore F. Blegen

Disclosed balance after: 5,331

F1 · shares: The shares were given as a bona fide gift by the reporting person to The Sarah N. Blegen and the Theodore F. Blegen Irrevocable Trusts.

Read SEC document
July 30, 2021 Filed Aug 11, 2021 21:09 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 GiftCommon Stock 5,331 $0.00 $0.00
Disclosure

SEC source: 0001214659-21-008384 · marketforms-53495.xml · nonDerivative · entry 2

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Indirect · Irrevocable Trust FBO Sarah N. Blegen

Disclosed balance after: 5,331

F1 · shares: The shares were given as a bona fide gift by the reporting person to The Sarah N. Blegen and the Theodore F. Blegen Irrevocable Trusts.

Read SEC document
July 30, 2021 Filed Aug 11, 2021 21:09 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 GiftCommon Stock 10,662 $0.00 $0.00
Disclosure

SEC source: 0001214659-21-008384 · marketforms-53495.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 135,192

F1 · shares: The shares were given as a bona fide gift by the reporting person to The Sarah N. Blegen and the Theodore F. Blegen Irrevocable Trusts.

Read SEC document
July 20, 2021 Filed Jul 22, 2021 00:11 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,897 $382.77 $726,114.69
Disclosure

SEC source: 0001214659-21-007718 · marketforms-53449.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 145,854

F1 · shares: Shares sold pursuant to the reporting person's 10b5-1 plan.

Read SEC document
July 01, 2021 Filed Jul 6, 2021 20:46 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 905 $370.45 $335,257.25
Disclosure

SEC source: 0001214659-21-007295 · marketforms-53263.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 147,751

F1 · kind: 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
June 21, 2021 Filed Jun 22, 2021 22:21 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,897 $353.17 $669,963.49
Disclosure

SEC source: 0001214659-21-006840 · marketforms-52942.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 148,656

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

F2 · balance_after: The ending balance was reduced by 556 shares to report a sale in November 2019 in accordance with the reporting person's 10b5-1 plan.

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May 20, 2021 Filed May 24, 2021 20:10 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,897 $330.00 $626,010.00
Disclosure

SEC source: 0001214659-21-005853 · marketforms-52865.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,109

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

F2 · balance_after: The ending balance was reduced by 100 shares to report a sale in November 2017 to cover the tax withholdings upon vesting of restricted stock units.

Read SEC document
May 12, 2021 Filed May 14, 2021 20:52 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,437 $311.82 $448,089.08
Disclosure

SEC source: 0001214659-21-005446 · marketforms-52750.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 153,106

F1 · kind: 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
May 10, 2021 Filed May 12, 2021 20:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,562 $326.40 $509,838.83
Disclosure

SEC source: 0001214659-21-005236 · marketforms-52703.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,543

F1 · kind: 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
April 22, 2021 Filed Apr 26, 2021 21:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 GrantCommon Stock 1,905 $30.00 $57,150.00
Disclosure

SEC source: 0001280452-21-000056 · edgardoc.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 156,105

F1 · shares: On February 2, 2021, the reporting person was granted a target number of 1,905 performance units that can be earned subject to the achievement of a performance goal related to certain environmental objectives, with a performance period through December 31, 2023. The performance units vest upon achievement of the goal, but no earlier than December 31, 2022. Once vested, the performance units have a post-vesting sales restriction period of one year. On April 22, 2021, the Compensation Committee of the Board of Directors determined that the environmental goal had been satisfied, which resulted in 1,905 units being credited with the vesting terms described above.

Read SEC document
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 62 $371.29 $23,020.16
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 9

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,200

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $370.78 to $371.47. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 46 $369.95 $17,017.64
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 8

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,262

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $369.47 to $370.46. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 96 $368.50 $35,376.15
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 7

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,308

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $368.22 to $368.70. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 43 $367.36 $15,796.35
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 6

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,404

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $367.13 to $367.65. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 192 $366.42 $70,352.43
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 5

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,447

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $366.04 to $366.98. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 140 $365.22 $51,130.34
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 4

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,639

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $365.015 to $365.795. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 532 $364.48 $193,902.51
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 3

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 154,779

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $363.97 to $364.875. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 606 $363.50 $220,283.30
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 2

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155,311

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $362.97 to $363.965. 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
April 20, 2021 Filed Apr 22, 2021 00:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 180 $362.51 $65,252.39
Disclosure

SEC source: 0001280452-21-000049 · edgardoc.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155,917

F1 · kind: Shares sold pursuant to the reporting person's 10b5-1 plan.

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 $361.94 to $362.90. 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
April 01, 2021 Filed Apr 2, 2021 19:06 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 905 $364.78 $330,122.82
Disclosure

SEC source: 0001280452-21-000043 · edgardoc.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 156,097

F1 · kind: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plans.

Read SEC document
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 62 $355.03 $22,011.59
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 11

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,002

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $354.88 to $355.26. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 203 $354.45 $71,952.76
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 10

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,064

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $353.85 to $354.83. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 201 $353.38 $71,028.38
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 9

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,267

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $352.82 to $353.82. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $351.91 $35,191.47
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 8

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,468

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $351.64 to $352.17. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 444 $350.98 $155,833.70
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 7

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 157,568

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $350.55 to $351.44. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 282 $350.12 $98,732.94
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 6

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,012

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $349.54 to $350.48. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 180 $348.91 $62,803.80
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 5

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,294

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $348.49 to $349.27. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 145 $347.92 $50,448.37
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 4

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,474

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $347.27 to $348.26. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 140 $346.71 $48,539.60
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 3

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,619

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $346.14 to $347.08. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 120 $345.43 $41,451.52
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 2

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,759

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $345.11 to $346.06. 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
March 22, 2021 Filed Mar 24, 2021 20:16 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 20 $343.56 $6,871.20
Disclosure

SEC source: 0001280452-21-000041 · edgardoc.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,879

F1 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 92 $393.44 $36,196.48
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 14

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,899

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $392.50 $39,249.50
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 13

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,991

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $392.19 to $392.80. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 50 $391.36 $19,567.75
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 12

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,091

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 300 $390.41 $117,123.24
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 11

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,141

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $390.14 to $390.77. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 250 $389.11 $97,276.50
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 10

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,441

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $388.99 to $389.24. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 952 $388.36 $369,717.86
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 9

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,691

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $387.84 to $388.80. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,031 $387.29 $399,293.62
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 8

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 160,643

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $386.76 to $387.71. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 400 $386.11 $154,443.00
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 7

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,674

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $385.69 to $386.39. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 208 $385.00 $80,080.58
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 6

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,074

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $384.51 to $385.17. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 465 $383.84 $178,486.44
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 5

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,282

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $383.33 to $384.32. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 300 $382.62 $114,786.99
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 4

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,747

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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 $382.10 to $383.08. 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.

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February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 50 $381.29 $19,064.50
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 3

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163,047

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

Read SEC document
February 19, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 101 $379.93 $38,372.93
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 2

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163,097

F2 · kind: In accordance with the reporting person's 10b5-1 trading plan.

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February 16, 2021 Filed Feb 23, 2021 23:08 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 OtherCommon Stock 89 $239.17 $21,286.40
Disclosure

SEC source: 0001280452-21-000036 · edgardoc.xml · nonDerivative · entry 1

BLEGEN THEODORE · CIK 0001415033 · CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163,198

F1 · kind: Acquired through the Company's qualified ESPP program.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.