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Hsing Michael

Disclosed activity across 1 company

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45632
SEC CIK
0001308676

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
MONOLITHIC POWER SYSTEMS, INC.MPWR · Entity 877Director · CEOSeptember 28, 2026September 30, 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 September 28, 2026 · Filed September 30, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect847,668 Reported balance After 2026-09-28 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-09-28 · Sale · Disposed 596 · Balance 847,668

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F3: 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 $1,320.64 to $1,325.61. 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.

F2: Ending balance includes 1 share acquired on August 17, 2026, through the Company's qualified ESPP program.

Common StockSEC Table I · non-derivativeDirect845,547 Reported balance After 2026-09-28 transaction · row 2 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 2 · 2026-09-28 · Sale · Disposed 2,121 · Balance 845,547

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F4: 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 $1,325.65 to $1,330.62. 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.

Common StockSEC Table I · non-derivativeDirect844,436 Reported balance After 2026-09-28 transaction · row 3 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 3 · 2026-09-28 · Sale · Disposed 1,111 · Balance 844,436

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F5: 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 $1,330.65 to $1,335.51. 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.

Common StockSEC Table I · non-derivativeDirect841,487 Reported balance After 2026-09-28 transaction · row 4 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 4 · 2026-09-28 · Sale · Disposed 2,949 · Balance 841,487

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F6: 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 $1,335.68 to $1,340.66. 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.

Common StockSEC Table I · non-derivativeDirect835,704 Reported balance After 2026-09-28 transaction · row 5 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 5 · 2026-09-28 · Sale · Disposed 5,783 · Balance 835,704

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F7: 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 $1,340.69 to $1,345.65. 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.

Common StockSEC Table I · non-derivativeDirect829,361 Reported balance After 2026-09-28 transaction · row 6 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 6 · 2026-09-28 · Sale · Disposed 6,343 · Balance 829,361

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F8: 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 $1,345.66 to $1,350.47. 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.

Common StockSEC Table I · non-derivativeDirect818,394 Reported balance After 2026-09-28 transaction · row 7 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 7 · 2026-09-28 · Sale · Disposed 10,967 · Balance 818,394

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F9: 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 $1,350.84 to $1,355.11. 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.

Common StockSEC Table I · non-derivativeDirect818,264 Reported balance After 2026-09-28 transaction · row 8 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 8 · 2026-09-28 · Sale · Disposed 130 · Balance 818,264

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F10: 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 $1,356.78 to $1,357.00. 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.

Common StockSEC Table I · non-derivativeIndirectby M Hsing 04 Trust133,040 Reported balance Holding disclosure · report date 2026-09-28 · row 9 Holding and transaction disclosures are not merged.
1 source row

Row 9 · Balance 133,040

Common StockSEC Table I · non-derivativeIndirectZH Family 2020 Trust12,825 Reported balance Holding disclosure · report date 2026-09-28 · row 10 Holding and transaction disclosures are not merged.
1 source row

Row 10 · Balance 12,825

Filing footnotes · ownership attribution and instrument terms

F1: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.

F2: Ending balance includes 1 share acquired on August 17, 2026, through the Company's qualified ESPP program.

F3: 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 $1,320.64 to $1,325.61. 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.

F4: 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 $1,325.65 to $1,330.62. 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.

F5: 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 $1,330.65 to $1,335.51. 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.

F6: 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 $1,335.68 to $1,340.66. 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.

F7: 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 $1,340.69 to $1,345.65. 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.

F8: 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 $1,345.66 to $1,350.47. 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.

F9: 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 $1,350.84 to $1,355.11. 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.

F10: 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 $1,356.78 to $1,357.00. 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.

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
August 15, 2025 Filed Aug 18, 2025 21:36 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 396 $828.64 $328,141.44
Disclosure

SEC source: 0001214659-25-012411 · marketforms-70302.xml · nonDerivative · entry 4

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 825,466

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 $828.07 to $828.84. 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
August 15, 2025 Filed Aug 18, 2025 21:36 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 3,878 $827.72 $3,209,898.16
Disclosure

SEC source: 0001214659-25-012411 · marketforms-70302.xml · nonDerivative · entry 3

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 825,862

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 $827.06 to $827.98. 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
August 15, 2025 Filed Aug 18, 2025 21:36 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 2,555 $826.64 $2,112,065.20
Disclosure

SEC source: 0001214659-25-012411 · marketforms-70302.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 829,740

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 $826.12 to $826.98. 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
August 15, 2025 Filed Aug 18, 2025 21:36 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 2,603 $825.69 $2,149,271.07
Disclosure

SEC source: 0001214659-25-012411 · marketforms-70302.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 832,295

F1 · 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 $825.06 to $825.86. 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 18, 2025 Filed Feb 21, 2025 00:01 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 5,200 $700.00 $3,640,000.00
Disclosure

SEC source: 0001214659-25-003202 · marketforms-68276.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 834,898

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 20:44 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 2,594 $717.10 $1,860,157.40
Disclosure

SEC source: 0001214659-25-002481 · marketforms-68077.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 840,071

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
February 07, 2025 Filed Feb 11, 2025 22:33 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 11,964 $700.00 $8,374,800.00
Disclosure

SEC source: 0001214659-25-002420 · marketforms-68072.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 842,665

Read SEC document
January 24, 2025 Filed Jan 28, 2025 22:52 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 3,636 $700.00 $2,545,200.00
Disclosure

SEC source: 0001214659-25-001498 · marketforms-67934.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 854,629

Read SEC document
November 08, 2024 Filed Nov 13, 2024 22:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 2,812 $765.15 $2,151,601.80
Disclosure

SEC source: 0001214659-24-018885 · marketforms-67307.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 858,265

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.

F2 · balance_after: Ending balance includes 8 shares acquired on August 15, 2024 through the Company's qualified ESPP program.

Read SEC document
August 16, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $823.27 $82,327.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 7

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 864,009

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 114 $840.24 $95,787.36
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 18

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 861,069

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 $840.23 to $840.64. 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
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 146 $839.90 $122,625.40
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 17

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 861,183

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 $839.25 to $839.92. 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 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 240 $838.23 $201,175.20
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 16

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 861,329

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 391 $837.57 $327,489.87
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 15

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 861,569

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 $837.45 to $837.97. 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 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 380 $836.21 $317,759.80
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 14

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 861,960

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 $836.00 to $836.59. 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
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 262 $832.28 $218,057.36
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 13

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 862,340

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 $832.12 to $832.54. 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 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 107 $831.83 $89,005.81
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 12

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 862,602

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 500 $828.15 $414,075.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 11

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 862,709

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 $828.08 to $828.16. 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 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $827.21 $82,721.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 10

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 863,209

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 200 $826.00 $165,200.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 9

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 863,309

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 500 $824.63 $412,315.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 8

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 863,509

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 $824.28 to $824.86. 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
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $821.32 $82,132.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 6

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 864,109

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $817.10 $81,710.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 5

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 864,209

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 300 $816.18 $244,854.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 4

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 864,309

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 $816.13 to $816.20. 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 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 458 $815.37 $373,439.46
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 3

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 864,609

F1 · 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 $815.05 to $815.91. 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
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 65 $814.72 $52,956.80
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 865,067

Read SEC document
August 09, 2024 Filed Aug 13, 2024 15:07 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 200 $813.23 $162,646.00
Disclosure

SEC source: 0001214659-24-014284 · marketforms-66764.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 865,132

Read SEC document
August 08, 2024 Filed Aug 12, 2024 18:35 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 2,790 $778.39 $2,171,708.10
Disclosure

SEC source: 0001214659-24-014220 · marketforms-66757.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 865,332

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
July 22, 2024 Filed Jul 24, 2024 20:40 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 9,614 $831.58 $7,994,810.12
Disclosure

SEC source: 0001214659-24-012921 · marketforms-66630.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 868,122

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
July 01, 2024 Filed Jul 2, 2024 15:28 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 102 $807.88 $82,403.76
Disclosure

SEC source: 0001214659-24-011784 · marketforms-66460.xml · nonDerivative · entry 7

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 877,736

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July 01, 2024 Filed Jul 2, 2024 15:28 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,820 $806.39 $1,467,629.80
Disclosure

SEC source: 0001214659-24-011784 · marketforms-66460.xml · nonDerivative · entry 6

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 877,838

F1 · 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 $806.38 to $806.50. 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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July 01, 2024 Filed Jul 2, 2024 15:28 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 150 $804.18 $120,627.00
Disclosure

SEC source: 0001214659-24-011784 · marketforms-66460.xml · nonDerivative · entry 5

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 879,658

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July 01, 2024 Filed Jul 2, 2024 15:28 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $802.19 $80,219.00
Disclosure

SEC source: 0001214659-24-011784 · marketforms-66460.xml · nonDerivative · entry 4

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 879,808

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July 01, 2024 Filed Jul 2, 2024 15:28 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 200 $800.62 $160,124.00
Disclosure

SEC source: 0001214659-24-011784 · marketforms-66460.xml · nonDerivative · entry 3

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 879,908

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July 01, 2024 Filed Jul 2, 2024 15:28 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 100 $798.74 $79,874.00
Disclosure

SEC source: 0001214659-24-011784 · marketforms-66460.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 880,108

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July 01, 2024 Filed Jul 2, 2024 15:28 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 200 $794.69 $158,938.00
Disclosure

SEC source: 0001214659-24-011784 · marketforms-66460.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 880,208

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 213 $746.35 $158,972.55
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 26

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 880,408

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 200 $744.06 $148,812.00
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 25

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 880,621

Read SEC document
June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 152 $743.58 $113,024.16
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 24

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 880,821

F18 · 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 $743.58 to $743.62. 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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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 20 $742.10 $14,842.00
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 23

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 880,973

Read SEC document
June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 180 $741.70 $133,506.00
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 22

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 880,993

F17 · 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 $741.60 to $741.88. 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.

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 248 $738.33 $183,105.84
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 21

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 881,173

F16 · 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 $738.16 to $738.43. 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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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 200 $737.43 $147,486.00
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 20

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 881,421

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 $737.14 to $737.72. 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.

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 387 $736.27 $284,936.49
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 19

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 881,621

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 $736.01 to $736.49. 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.

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 470 $735.37 $345,623.90
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 18

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 882,008

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 $735.15 to $735.50. 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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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,062 $734.34 $779,869.08
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 17

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 882,478

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 $734.01 to $734.95. 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.

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 700 $733.53 $513,471.00
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 16

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 883,540

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 $733.06 to $733.87. 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.

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 875 $732.80 $641,200.00
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 15

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 884,240

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 $732.38 to $732.99. 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.

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 441 $731.45 $322,569.45
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 14

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 885,115

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 $731.10 to $731.87. 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.

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June 03, 2024 Filed Jun 5, 2024 18:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 157 $730.48 $114,685.36
Disclosure

SEC source: 0001214659-24-010598 · marketforms-66171.xml · nonDerivative · entry 13

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 885,556

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 $730.27 to $730.88. 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.

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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.