Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MONOLITHIC POWER SYSTEMS, INC.MPWR · Entity 877 | Director · CEO | September 28, 2026 | September 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 / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 847,668 |
Reported balance
After 2026-09-28 transaction · row 1
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Direct | 845,547 |
Reported balance
After 2026-09-28 transaction · row 2
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Direct | 844,436 |
Reported balance
After 2026-09-28 transaction · row 3
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Direct | 841,487 |
Reported balance
After 2026-09-28 transaction · row 4
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Direct | 835,704 |
Reported balance
After 2026-09-28 transaction · row 5
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Direct | 829,361 |
Reported balance
After 2026-09-28 transaction · row 6
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Direct | 818,394 |
Reported balance
After 2026-09-28 transaction · row 7
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Direct | 818,264 |
Reported balance
After 2026-09-28 transaction · row 8
Account or security details depend on footnotes; rows are not merged.
1 source rowRow 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-derivative | Indirectby M Hsing 04 Trust | 133,040 |
Reported balance
Holding disclosure · report date 2026-09-28 · row 9
Holding and transaction disclosures are not merged.
1 source rowRow 9 · Balance 133,040 |
| Common StockSEC Table I · non-derivative | IndirectZH Family 2020 Trust | 12,825 |
Reported balance
Holding disclosure · report date 2026-09-28 · row 10
Holding and transaction disclosures are not merged.
1 source rowRow 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
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 130 | $1,356.94 | $176,402.20 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 8 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 818,264 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,356.78 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. Read SEC document |
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 10,967 | $1,351.43 | $14,821,132.81 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 7 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 818,394 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,350.84 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. Read SEC document |
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 6,343 | $1,347.15 | $8,544,972.45 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 6 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 829,361 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,345.66 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. Read SEC document |
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 5,783 | $1,343.76 | $7,770,964.08 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 5 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 835,704 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,340.69 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. Read SEC document |
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,949 | $1,338.66 | $3,947,708.34 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 4 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 841,487 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,335.68 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. Read SEC document |
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,111 | $1,333.34 | $1,481,340.74 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 3 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 844,436 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,330.65 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. Read SEC document |
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,121 | $1,328.54 | $2,817,833.34 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 2 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 845,547 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,325.65 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. Read SEC document |
| September 28, 2026 Filed Sep 30, 2026 21:21 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 596 | $1,323.31 | $788,692.76 |
DisclosureSEC source: 0001214659-26-012375 · marketforms-74049.xml · nonDerivative · entry 1 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 847,668 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026. F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,320.64 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 · balance_after: Ending balance includes 1 share acquired on August 17, 2026, through the Company's qualified ESPP program. Read SEC document |
| May 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 130 | $1,521.43 | $197,785.90 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 13 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 848,263 F14 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,521.33 to $1,521.56. 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 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 352 | $1,518.15 | $534,388.80 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 12 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 848,393 F13 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,516.26 to $1,519.25. 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 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 551 | $1,513.11 | $833,723.61 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 11 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 848,745 F12 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,510.68 to $1,515.44. 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 |
| May 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 3,769 | $1,507.70 | $5,682,521.30 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 10 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 849,296 F11 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,505.70 to $1,510.67. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| May 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,929 | $1,503.05 | $4,402,433.45 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 9 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 853,065 F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,500.75 to $1,505.70. 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 |
| May 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 608 | $1,499.46 | $911,671.68 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 8 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 855,994 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 $,1495.74 to $1,500.72. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| May 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 862 | $1,491.48 | $1,285,655.76 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 7 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 856,602 F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,490.17 to $1,494.10. 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 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 6,688 | $1,486.76 | $9,943,450.88 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 6 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 857,464 F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,484.95 to $1,489.73. 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 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 5,737 | $1,482.51 | $8,505,159.87 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 5 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 864,152 F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,479.99 to $1,484.93. 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 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 4,082 | $1,476.96 | $6,028,950.72 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 4 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 869,889 F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,474.95 to $1,479.85. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| May 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 5,049 | $1,472.84 | $7,436,369.16 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 3 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 873,971 F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,469.95 to $1,474.94. 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 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 5,819 | $1,467.62 | $8,540,080.78 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 2 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 879,020 F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,464.97 to $1,469.94. 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 18, 2026 Filed May 21, 2026 00:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 3,424 | $1,462.61 | $5,007,976.64 |
DisclosureSEC source: 0001214659-26-006625 · marketforms-73205.xml · nonDerivative · entry 1 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 884,839 F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,459.96 to $1,464.86. 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. F1 · balance_after: Ending balance includes 29 shares acquired on February 17, 2026 through the Company's qualified ESPP program. Read SEC document |
| February 12, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,440 | $1,217.12 | $1,752,652.80 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 12 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 888,234 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F13 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,214.09 to $1,218.82. 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 |
| February 12, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,240 | $1,210.11 | $1,500,536.40 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 11 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 889,674 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F12 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,207.93 to $1,212.36. 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, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 3,640 | $1,205.82 | $4,389,184.80 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 10 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 890,914 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F11 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,202.70 to $1,207.63. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 12, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,440 | $1,200.81 | $1,729,166.40 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 9 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 894,554 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,197.57 to $1,202.33. 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, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 600 | $1,194.34 | $716,604.00 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 8 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 895,994 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,191.26 to $1,195.35. 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, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 160 | $1,188.23 | $190,116.80 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 7 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 896,594 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,185.94 to $1,190.48. 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 |
| February 12, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 480 | $1,180.79 | $566,779.20 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 6 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 896,754 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,179.43 to $1,182.24. 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. Read SEC document |
| February 12, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 200 | $1,173.39 | $234,678.00 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 5 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 897,234 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,172.82 to $1,175.07. 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, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,076 | $1,168.80 | $2,426,428.80 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 4 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 897,434 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,167.43 to $1,172.17. 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 |
| February 12, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 4,001 | $1,164.92 | $4,660,844.92 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 3 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 899,510 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,162.42 to $1,167.20 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 |
| February 12, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 4,992 | $1,159.84 | $5,789,921.28 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 2 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 903,511 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,157.38 to $1,162.38. 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, 2026 Filed Feb 17, 2026 22:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 12,731 | $1,155.71 | $14,713,344.01 |
DisclosureSEC source: 0001214659-26-002084 · marketforms-72189.xml · nonDerivative · entry 1 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 908,503 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,152.31 to $1,157.31. 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 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 649 | $1,202.28 | $780,279.72 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 10 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 921,234 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F11 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,200.46 to $1,203.86. 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 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 14,578 | $1,197.20 | $17,452,781.60 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 9 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 921,883 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,195.44 to $1,200.37. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 6,079 | $1,192.67 | $7,250,240.93 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 8 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 936,461 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,190.39 to $1,195.37. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,104 | $1,188.17 | $2,499,909.68 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 7 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 942,540 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,185.33 to $1,190.26. 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 |
| February 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,542 | $1,182.82 | $1,823,908.44 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 6 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 944,644 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,180.29 to $1,185.29. 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 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,799 | $1,177.67 | $3,296,298.33 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 5 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 946,186 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,175.27 to $1,180.19. 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 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,987 | $1,172.92 | $2,330,592.04 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 4 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 948,985 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,170.10 to $1,175.09. 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 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,533 | $1,167.62 | $1,789,961.46 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 3 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 950,972 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,166.00 to $1,169.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,366 | $1,163.71 | $1,589,627.86 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 2 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 952,505 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F3 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,160.70 to $1,165.64 The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 11, 2026 Filed Feb 13, 2026 22:11 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 363 | $1,158.71 | $420,611.73 |
DisclosureSEC source: 0001214659-26-001738 · marketforms-72131.xml · nonDerivative · entry 1 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 953,871 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 8/25/2025. F2 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,155.64 to $1,160.62 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. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 19:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 280 | $1,197.26 | $335,232.80 |
DisclosureSEC source: 0001214659-26-001587 · marketforms-72116.xml · nonDerivative · entry 9 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 954,234 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 19:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 880 | $1,176.04 | $1,034,915.20 |
DisclosureSEC source: 0001214659-26-001587 · marketforms-72116.xml · nonDerivative · entry 8 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 954,514 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,172.65 to $1,177.08. 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 |
| February 10, 2026 Filed Feb 12, 2026 19:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 360 | $1,161.41 | $418,107.60 |
DisclosureSEC source: 0001214659-26-001587 · marketforms-72116.xml · nonDerivative · entry 7 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 955,394 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,159.96 to $1,163.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 19:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 694 | $1,154.96 | $801,542.24 |
DisclosureSEC source: 0001214659-26-001587 · marketforms-72116.xml · nonDerivative · entry 6 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 955,754 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,154.09 to $1,155.86. 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 10, 2026 Filed Feb 12, 2026 19:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,215 | $1,151.11 | $1,398,598.65 |
DisclosureSEC source: 0001214659-26-001587 · marketforms-72116.xml · nonDerivative · entry 5 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 956,448 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,149.04 to $1,154.00. 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. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 19:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 3,864 | $1,145.90 | $4,427,757.60 |
DisclosureSEC source: 0001214659-26-001587 · marketforms-72116.xml · nonDerivative · entry 4 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 957,663 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F5 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,144.03 to $1,149.00. 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. Read SEC document |
| February 10, 2026 Filed Feb 12, 2026 19:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 16,080 | $1,141.88 | $18,361,430.40 |
DisclosureSEC source: 0001214659-26-001587 · marketforms-72116.xml · nonDerivative · entry 3 Hsing Michael · CIK 0001308676 · Director · CEO 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 961,527 F1 · shares: These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 08/28/2025. F4 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,138.96 to $1,143.96. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.