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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
February 15, 2018 Filed Feb 17, 2018 00:03 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 OtherCommon Stock 246 $86.51 $21,282.20
Disclosure

SEC source: 0001280452-18-000046 · edgardoc.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,297,818

F3 · kind: Acquired through the Company's qualified ESPP program.

Read SEC document
February 14, 2018 Filed Feb 17, 2018 00:03 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 20,429 $111.15 $2,270,685.39
Disclosure

SEC source: 0001280452-18-000046 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,297,572

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 $108.71 to $111.705. 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 12, 2018 Filed Feb 13, 2018 21:58 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 96,181 $108.19 $10,406,226.35
Disclosure

SEC source: 0001280452-18-000039 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,318,001

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
February 07, 2018 Filed Feb 9, 2018 00:57 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 GrantCommon Stock 325,267 $20.00 $6,505,340.00
Disclosure

SEC source: 0001280452-18-000020 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,414,182

F1 · shares: On February 2, 2016, the reporting person was granted a target of 132,376 shares of restricted stock units, with the right to earn up to 300% of the target shares, subject to satisfaction of pre-determined, performance-based vesting criteria. On February 7, 2018, the Company's Board of Directors determined that those performance criteria for the restricted stock units had been satisfied, which resulted in 192,891 additional shares being achieved and earned by the reporting person. Of the restricted stock units that were awarded, 162,634 will vest immediately and 162,633 will vest quarterly in the next two years.

Read SEC document
February 05, 2018 Filed Feb 5, 2018 23:43 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 17,354 $113.85 $1,975,824.05
Disclosure

SEC source: 0001280452-18-000008 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,088,915

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
November 14, 2017 Filed Nov 15, 2017 22:00 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 18,817 $119.63 $2,251,055.13
Disclosure

SEC source: 0001280452-17-000124 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,106,269

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 $119 to $121.11. 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.

Read SEC document
November 06, 2017 Filed Nov 7, 2017 23:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 19,765 $123.06 $2,432,332.29
Disclosure

SEC source: 0001280452-17-000120 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,125,086

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
August 14, 2017 Filed Aug 16, 2017 23:01 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 18,817 $101.94 $1,918,246.38
Disclosure

SEC source: 0001280452-17-000098 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,144,851

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 $101.27 to $102.59. 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 07, 2017 Filed Aug 7, 2017 23:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 11,132 $102.19 $1,137,542.34
Disclosure

SEC source: 0001280452-17-000094 · edgardoc.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,163,668

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
August 04, 2017 Filed Aug 7, 2017 23:12 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 8,634 $101.66 $877,757.48
Disclosure

SEC source: 0001280452-17-000094 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,174,800

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
May 15, 2017 Filed May 17, 2017 22:11 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 18,815 $96.13 $1,808,719.82
Disclosure

SEC source: 0001280452-17-000067 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,183,434

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 $95.40 to $96.42. 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
May 05, 2017 Filed May 8, 2017 21:30 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 11,131 $92.55 $1,030,220.80
Disclosure

SEC source: 0001280452-17-000063 · edgardoc.xml · nonDerivative · entry 3

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,202,249

F2 · 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
May 04, 2017 Filed May 8, 2017 21:30 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 8,634 $91.89 $793,405.03
Disclosure

SEC source: 0001280452-17-000063 · edgardoc.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,213,380

F2 · 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
February 15, 2017 Filed May 8, 2017 21:30 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 OtherCommon Stock 335 $63.43 $21,248.05
Disclosure

SEC source: 0001280452-17-000063 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,222,014

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

Read SEC document
February 13, 2017 Filed Feb 13, 2017 23:38 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 95,667 $86.17 $8,244,046.32
Disclosure

SEC source: 0001280452-17-000031 · edgardoc.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,221,679

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 $85.00 to $89.01. 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 10, 2017 Filed Feb 13, 2017 23:38 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 59,943 $89.29 $5,352,550.24
Disclosure

SEC source: 0001280452-17-000031 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,317,346

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
February 07, 2017 Filed Feb 8, 2017 22:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 Exercise / conversionPerformance Shares · Derivative 8,939 $0.00 $0.00
Disclosure

SEC source: 0001280452-17-000020 · edgardoc.xml · derivative · entry 5

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 102,987

Underlying: Common Stock · 8,939 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

F3 · date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

F3 · shares: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

F3 · derivative.exercise_date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

F3 · derivative.expiration_date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

Read SEC document
February 07, 2017 Filed Feb 8, 2017 22:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 Exercise / conversionCommon Stock 8,939 $0.00 $0.00
Disclosure

SEC source: 0001280452-17-000020 · edgardoc.xml · nonDerivative · entry 3

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,377,289

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

F3 · kind: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

F3 · shares: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that one of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 8,939 shares being granted, subject to time based vesting described above.

Read SEC document
February 07, 2017 Filed Feb 8, 2017 22:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 GrantCommon Stock 225,944 $0.00 $0.00
Disclosure

SEC source: 0001280452-17-000020 · edgardoc.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,368,350

F2 · shares: On February 3, 2015, the reporting person was granted a target of 79,745 shares of restricted stock units subject to satisfaction of pre-determined, performance-based vesting criteria. On February 7, 2017, the Company's Board of Directors determined that those performance criteria for the restricted stock units had been satisfied, which resulted in 146,199 additional shares being achieved and granted to the reporting person. Of the restricted stock units that were awarded, 112,972 will vest immediately and 112,972 will vest quarterly in the next two years.

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February 06, 2017 Filed Feb 8, 2017 22:15 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 19,482 $88.25 $1,719,354.69
Disclosure

SEC source: 0001280452-17-000020 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,142,406

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.

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November 17, 2016 Filed Nov 18, 2016 00:13 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 4,091 $81.18 $332,094.70
Disclosure

SEC source: 0001280452-16-000339 · edgardoc.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,161,888

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 $80.91 to $81.32. 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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November 17, 2016 Filed Nov 18, 2016 00:13 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 11,321 $81.17 $918,962.93
Disclosure

SEC source: 0001280452-16-000339 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,165,979

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 $80.84 to $81.37. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

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November 07, 2016 Filed Nov 8, 2016 22:49 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 19,922 $77.88 $1,551,583.13
Disclosure

SEC source: 0001280452-16-000335 · edgardoc.xml · nonDerivative · entry 2

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,177,300

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.

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November 04, 2016 Filed Nov 8, 2016 22:49 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 SaleCommon Stock 1,171 $76.32 $89,368.73
Disclosure

SEC source: 0001280452-16-000335 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,197,222

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.

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October 28, 2016 Filed Nov 1, 2016 22:57 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 Exercise / conversionPerformance Shares · Derivative 26,817 $0.00 $0.00
Disclosure

SEC source: 0001280452-16-000329 · edgardoc.xml · derivative · entry 3

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 111,926

Underlying: Common Stock · 26,817 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

F1 · date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

F1 · kind: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

F1 · shares: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

F1 · derivative.exercise_date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

F1 · derivative.expiration_date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

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October 28, 2016 Filed Nov 1, 2016 22:57 UTC MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 Exercise / conversionCommon Stock 26,817 $0.00 $0.00
Disclosure

SEC source: 0001280452-16-000329 · edgardoc.xml · nonDerivative · entry 1

Hsing Michael · CIK 0001308676 · Director · CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,198,393

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · date: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

F1 · kind: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

F1 · shares: On December 31, 2015, the reporting person was granted a target of 138,743 shares of restricted stock units in four tranches subject to satisfaction of share price targets over the next four years. The vesting of restricted stock units in the second, third and fourth tranches is also subject to the satisfaction of certain operational goals, as determined by the Compensation Committee of the Company. All restricted stock units are subject to time based vesting. Once vested, one-third of shares have no sales restrictions and are sellable on January 1, 2020, one-third of the shares have sales restrictions until January 1, 2021 and one-third of the shares have sales restrictions until January 1, 2022.On October 28, 2016, the Compensation Committee of the Company determined that three of the five share price targets for the first tranche of restricted stock units had been satisfied, which resulted in 26,817 shares being granted, subject to time based vesting described above.

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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.