Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| MONOLITHIC POWER SYSTEMS, INC.MPWR · Entity 877 | EVP, WW Sales & Marketing | August 04, 2026 | August 07, 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 August 04, 2026 · Filed August 07, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 126,644 |
Reported balance
After 2026-08-04 transaction · row 1
1 source rowRow 1 · 2026-08-04 · Gift · Disposed 25,000 · Balance 126,644 F1: 25,000 shares were transferred from the reporting person's direct holdings to two GRATs, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer. |
| Common StockSEC Table I · non-derivative | IndirectVarious Sciammas GRATs | 36,062 |
Reported balance
After 2026-08-04 transaction · row 2
Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source rowRow 2 · 2026-08-04 · Gift · Acquired 25,000 · Balance 36,062 F2: 25,000 shares were received by two GRATs, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer. |
| Common StockSEC Table I · non-derivative | IndirectThe Joseph Roger Sciammas 2020 Irrevocable Trust | 1,699 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 3
Holding and transaction disclosures are not merged.
1 source rowRow 3 · Balance 1,699 |
| Common StockSEC Table I · non-derivative | IndirectRosalind Sciammas Family 2021 Trust | 2,000 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 4
Holding and transaction disclosures are not merged.
1 source rowRow 4 · Balance 2,000 |
| Common StockSEC Table I · non-derivative | IndirectRosalind Sciammas Brokerage Account | 919 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 5
Holding and transaction disclosures are not merged.
1 source rowRow 5 · Balance 919 |
| Common StockSEC Table I · non-derivative | IndirectSciammas Family Trust | 52,586 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 6
Holding and transaction disclosures are not merged.
1 source rowRow 6 · Balance 52,586 |
| Common StockSEC Table I · non-derivative | IndirectThe Patrick Francis Sciammas 2020 Irrevocable Trust | 1,699 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 7
Holding and transaction disclosures are not merged.
1 source rowRow 7 · Balance 1,699 |
| Common StockSEC Table I · non-derivative | IndirectBy Sciammas Trust 2020 | 4,015 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 8
Holding and transaction disclosures are not merged.
1 source rowRow 8 · Balance 4,015 |
| Common StockSEC Table I · non-derivative | IndirectPeter Rafferty and Eric Toothill 2021Trust | 1,000 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 9
Holding and transaction disclosures are not merged.
1 source rowRow 9 · Balance 1,000 |
| Common StockSEC Table I · non-derivative | IndirectThe Chloe Liliane Sciammas 2020 Irrevocable Trust | 1,699 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 10
Holding and transaction disclosures are not merged.
1 source rowRow 10 · Balance 1,699 |
| Common StockSEC Table I · non-derivative | IndirectClement Sciammas Trust | 1,119 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 11
Holding and transaction disclosures are not merged.
1 source rowRow 11 · Balance 1,119 |
| Common StockSEC Table I · non-derivative | IndirectClement Sciammas Family 2021 Trust | 5,000 |
Reported balance
Holding disclosure · report date 2026-08-04 · row 12
Holding and transaction disclosures are not merged.
1 source rowRow 12 · Balance 5,000 |
Filing footnotes · ownership attribution and instrument terms
F1: 25,000 shares were transferred from the reporting person's direct holdings to two GRATs, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer.
F2: 25,000 shares were received by two GRATs, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.
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 |
|---|---|---|---|---|---|---|
| April 01, 2022 Filed May 5, 2022 21:00 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 1,699 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-22-006362 · marketforms-56062.xml · nonDerivative · entry 4 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · The Patrick Francis Sciammas 2020 Irrevocable Trust Disclosed balance after: 1,699 F4 · shares: 1,699 shares were received by the Patrick Francis Sciammas Trust as a gift from the reporting person's GRATs. No funds were exchanged and no sale of shares occurred in the transfer. Read SEC document |
| April 01, 2022 Filed May 5, 2022 21:00 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 1,852 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-22-006362 · marketforms-56062.xml · nonDerivative · entry 3 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · by Family Trust Disclosed balance after: 7,298 F3 · shares: 1,852 shares were received by the Sciammas Family Trust as a gift from the reporting person's GRATs. No funds were exchanged and no sale of shares occurred in the transfer. Read SEC document |
| April 01, 2022 Filed May 5, 2022 21:00 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 6,949 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-22-006362 · marketforms-56062.xml · nonDerivative · entry 2 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By GRAT Disclosed balance after: 8,500 F2 · shares: 6,949 shares were transferred as a gift from the reporting person's GRATs to various family trusts on which Maurice Sciammas is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer. Read SEC document |
| February 14, 2022 Filed Feb 16, 2022 23:44 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,663 | $429.60 | $714,424.80 |
DisclosureSEC source: 0001214659-22-002836 · marketforms-55212.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 273,597 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| February 08, 2022 Filed Feb 9, 2022 23:23 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,700 | $401.12 | $681,904.00 |
DisclosureSEC source: 0001214659-22-002127 · marketforms-55167.xml · nonDerivative · entry 2 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 275,260 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| February 07, 2022 Filed Feb 9, 2022 23:23 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 8,144 | $399.28 | $3,251,736.32 |
DisclosureSEC source: 0001214659-22-002127 · marketforms-55167.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 276,960 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| February 03, 2022 Filed Feb 4, 2022 22:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GrantCommon Stock | 39,699 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-22-001922 · marketforms-55262.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 285,104 F1 · shares: On February 4, 2020, the reporting person was granted a target of 13,233 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 3, 2022, the Company's Compensation Committee of the Board of Directors determined and approved the achievement of the performance criteria for the restricted stock units, which resulted in 26,466 additional shares being earned by the reporting person. Of the restricted stock units that were awarded, 19,851 will vest immediately and 19,848 will vest quarterly in the next two years. Read SEC document |
| January 03, 2022 Filed Jan 5, 2022 21:12 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 4,305 | $490.87 | $2,113,195.35 |
DisclosureSEC source: 0001214659-22-000328 · marketforms-54756.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 245,405 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| November 15, 2021 Filed Nov 17, 2021 00:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 11,310 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-011918 · marketforms-54053.xml · nonDerivative · entry 4 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · Christina Sciammas Trust FBO Oski Crew Disclosed balance after: 11,310 F3 · shares: The shares were given as a bona fide gift by the reporting person to The Maurice Sciammas Grantor Retained Annuity Trust For Oski Crew and The Christina Sciammas Grantor Retained Annuity Trust For Oski Crew. Read SEC document |
| November 15, 2021 Filed Nov 17, 2021 00:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 11,310 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-011918 · marketforms-54053.xml · nonDerivative · entry 3 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · Maurice Sciammas Trust FBO Oski Crew Disclosed balance after: 11,310 F3 · shares: The shares were given as a bona fide gift by the reporting person to The Maurice Sciammas Grantor Retained Annuity Trust For Oski Crew and The Christina Sciammas Grantor Retained Annuity Trust For Oski Crew. Read SEC document |
| November 15, 2021 Filed Nov 17, 2021 00:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 22,620 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-011918 · marketforms-54053.xml · nonDerivative · entry 2 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 249,710 F3 · shares: The shares were given as a bona fide gift by the reporting person to The Maurice Sciammas Grantor Retained Annuity Trust For Oski Crew and The Christina Sciammas Grantor Retained Annuity Trust For Oski Crew. Read SEC document |
| November 12, 2021 Filed Nov 17, 2021 00:33 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,625 | $553.42 | $899,304.25 |
DisclosureSEC source: 0001214659-21-011918 · marketforms-54053.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 272,330 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. F2 · balance_after: The amount of securities beneficially owned has been updated to reflect the correct amount of shares and corrects an inadvertent error on the Form 4 filed by the reporting person on November 10, 2021. Read SEC document |
| November 08, 2021 Filed Nov 10, 2021 22:59 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,022 | $548.27 | $1,108,601.94 |
DisclosureSEC source: 0001214659-21-011419 · marketforms-54052.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 278,831 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| October 01, 2021 Filed Oct 5, 2021 21:01 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 4,330 | $476.16 | $2,061,772.80 |
DisclosureSEC source: 0001214659-21-010247 · marketforms-53930.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 275,977 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. F2 · 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 $476.15 to $476.16. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| August 12, 2021 Filed Aug 16, 2021 20:43 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,651 | $457.10 | $754,672.10 |
DisclosureSEC source: 0001214659-21-008698 · marketforms-53582.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 280,307 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| August 09, 2021 Filed Aug 11, 2021 21:10 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 2,053 | $459.12 | $942,573.36 |
DisclosureSEC source: 0001214659-21-008387 · marketforms-53534.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 281,958 F1 · shares: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| July 01, 2021 Filed Jul 6, 2021 20:47 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 4,305 | $370.45 | $1,594,787.25 |
DisclosureSEC source: 0001214659-21-007296 · marketforms-52900.xml · nonDerivative · entry 7 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 284,011 F6 · kind: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| May 28, 2021 Filed Jul 6, 2021 20:47 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 2,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-007296 · marketforms-52900.xml · nonDerivative · entry 6 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · Peter Rafferty and Eric Toothill 2021Trust Disclosed balance after: 2,000 F5 · ownership.nature: Represents shares of stock owned by The Peter Rafferty and Eric Toothill 2021 Irrevocable Trust DTD 05/26/21. The reporting person is the trustee of the Peter Rafferty and Eric Toothill Trust. Read SEC document |
| May 28, 2021 Filed Jul 6, 2021 20:47 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 2,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-007296 · marketforms-52900.xml · nonDerivative · entry 5 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · Rosalind Sciammas Family 2021 Trust Disclosed balance after: 2,000 F4 · ownership.nature: Represents shares of stock owned by The Rosalind Sciammas Family 2021 Irrevocable Trust DTD 5/25/2021. The reporting person is the trustee of the Rosalind Sciammas Family Trust. Read SEC document |
| May 28, 2021 Filed Jul 6, 2021 20:47 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 5,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-007296 · marketforms-52900.xml · nonDerivative · entry 4 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · Clement Sciammas Family 2021 Trust Disclosed balance after: 5,000 F3 · ownership.nature: Represents shares of stock owned by The Clement Sciammas Family 2021 Irrevocable Trust DTD 5/25/2021. The reporting person is the trustee of the Clement Sciammas Family Trust. Read SEC document |
| May 28, 2021 Filed Jul 6, 2021 20:47 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 9,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-007296 · marketforms-52900.xml · nonDerivative · entry 3 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 288,316 F1 · price: The reported transaction involved a transfer of securities by gift for which no payment of consideration was received by the reporting person. Read SEC document |
| May 14, 2021 Filed May 14, 2021 20:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 14,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-005445 · marketforms-52752.xml · nonDerivative · entry 3 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst 2020 Disclosed balance after: 14,000 F2 · kind: This transaction involved a gift of securities by the reporting person to the Sciammas Family 2020 Irrevocable Trust Dtd 4/29/2020 Read SEC document |
| May 14, 2021 Filed May 14, 2021 20:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 14,000 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-005445 · marketforms-52752.xml · nonDerivative · entry 2 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 306,331 F2 · kind: This transaction involved a gift of securities by the reporting person to the Sciammas Family 2020 Irrevocable Trust Dtd 4/29/2020 Read SEC document |
| May 14, 2021 Filed Jul 6, 2021 20:47 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 9,015 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-007296 · marketforms-52900.xml · nonDerivative · entry 2 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trust 2020 Disclosed balance after: 23,015 F2 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| May 14, 2021 Filed Jul 6, 2021 20:47 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 9,015 | $0.00 | $0.00 |
DisclosureSEC source: 0001214659-21-007296 · marketforms-52900.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 297,316 F1 · price: The reported transaction involved a transfer of securities by gift for which no payment of consideration was received by the reporting person. Read SEC document |
| May 12, 2021 Filed May 14, 2021 20:51 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,741 | $311.82 | $542,884.19 |
DisclosureSEC source: 0001214659-21-005445 · marketforms-52752.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 320,331 F1 · kind: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| May 10, 2021 Filed May 12, 2021 20:16 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,233 | $326.41 | $402,457.37 |
DisclosureSEC source: 0001214659-21-005238 · marketforms-52501.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 322,072 F1 · kind: The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan. Read SEC document |
| April 22, 2021 Filed Apr 26, 2021 21:17 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GrantCommon Stock | 2,895 | $30.00 | $86,850.00 |
DisclosureSEC source: 0001280452-21-000058 · edgardoc.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 323,305 F1 · shares: On February 2, 2021, the reporting person was granted a target number of 2,895 performance units that can be earned subject to the achievement of a performance goal related to certain environmental objectives, with a performance period through December 31, 2023. The performance units vest upon achievement of the goal, but no earlier than December 31, 2022. Once vested, the performance units have a post-vesting sales restriction period of one year. On April 22, 2021, the Compensation Committee of the Board of Directors determined that the environmental goal had been satisfied, which resulted in 2,895 units being credited with the vesting terms described above. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 32 | $368.02 | $11,776.66 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 10 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 0 F4 · kind: In accordance with the reporting person's 10b5-1 trading plan. F10 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $367.93 to $368.03. 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 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 173 | $366.93 | $63,478.87 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 9 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 32 F4 · kind: In accordance with the reporting person's 10b5-1 trading plan. F9 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $366.59 to $367.57. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. F5 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 460 | $366.02 | $168,370.86 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 8 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 205 F4 · kind: In accordance with the reporting person's 10b5-1 trading plan. F8 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $365.51 to $366.50. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. F5 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 384 | $365.12 | $140,207.62 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 7 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 665 F4 · kind: In accordance with the reporting person's 10b5-1 trading plan. F7 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $364.50 to $365.50. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. F5 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 115 | $363.43 | $41,794.68 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 6 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 1,049 F4 · kind: In accordance with the reporting person's 10b5-1 trading plan. F6 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $363.13 to $364.02. 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 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 29 | $360.70 | $10,460.30 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 5 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 1,164 F4 · kind: In accordance with the reporting person's 10b5-1 trading plan. F5 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 10 | $358.79 | $3,587.90 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 4 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 1,193 F4 · kind: In accordance with the reporting person's 10b5-1 trading plan. F5 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| April 01, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 4,305 | $364.78 | $1,570,363.26 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 2 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 320,410 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 |
| March 31, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 8,500 | $0.00 | $0.00 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 3 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By GRAT Disclosed balance after: 17,500 F1 · kind: This transaction involved a gift of securities by the reporting person to the Grantor Retained Annuity Trusts, of which Maurice Sciammas and his wife are the trustee and grantors. F3 · ownership.nature: The securities are held by two Grantor Retained Annuity Trusts, of which Maurice Sciammas and his wife are the trustee and grantors. Read SEC document |
| March 31, 2021 Filed Apr 2, 2021 19:06 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | GiftCommon Stock | 8,500 | $0.00 | $0.00 |
DisclosureSEC source: 0001280452-21-000045 · edgardoc.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 324,715 F1 · kind: This transaction involved a gift of securities by the reporting person to the Grantor Retained Annuity Trusts, of which Maurice Sciammas and his wife are the trustee and grantors. Read SEC document |
| February 19, 2021 Filed Feb 23, 2021 23:08 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 172 | $379.93 | $65,347.96 |
DisclosureSEC source: 0001280452-21-000037 · edgardoc.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Indirect · By Sciammas Trst2020 Disclosed balance after: 1,203 F1 · kind: In accordance with the reporting person's 10b5-1 trading plan. F2 · ownership.nature: Represents shares of stock owned by The Sciammas Family 2020 Irrevocable Trust DTD 04/29/2020. The reporting person is the trustee of the Sciammas Family 2020 Irrevocable Trust. The reporting person may be deemed to beneficially own the shares of common stock owned by The Sciammas Family 2020 Irrevocable Trust. Read SEC document |
| February 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | OtherCommon Stock | 89 | $239.17 | $21,286.40 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 8 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 333,215 F8 · kind: Acquired through the Company's qualified ESPP program. Read SEC document |
| February 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 800 | $393.99 | $315,188.40 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 7 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 333,126 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 $393.95 to $394.09. 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 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 600 | $393.27 | $235,963.98 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 6 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 333,926 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 $392.92 to $393.50. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 400 | $392.22 | $156,889.00 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 5 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 334,526 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 $391.87 to $392.58. 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 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,300 | $390.46 | $507,600.99 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 4 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 334,926 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 $390.24 to $391.00. 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 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,480 | $389.31 | $576,172.58 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 3 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 336,226 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 $388.83 to $389.81. 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 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 3,200 | $388.29 | $1,242,543.04 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 2 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 337,706 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 $387.79 to $388.77. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 16, 2021 Filed Feb 17, 2021 22:45 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 3,220 | $387.34 | $1,247,232.55 |
DisclosureSEC source: 0001280452-21-000034 · edgardoc.xml · nonDerivative · entry 1 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 340,906 F1 · price: The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $386.78 to $387.77. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. Read SEC document |
| February 11, 2021 Filed Feb 12, 2021 23:53 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 100 | $383.81 | $38,381.00 |
DisclosureSEC source: 0001280452-21-000031 · edgardoc.xml · nonDerivative · entry 6 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 344,126 Read SEC document |
| February 11, 2021 Filed Feb 12, 2021 23:53 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,400 | $382.11 | $534,960.16 |
DisclosureSEC source: 0001280452-21-000031 · edgardoc.xml · nonDerivative · entry 5 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 344,226 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 $381.63 to $382.34. 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, 2021 Filed Feb 12, 2021 23:53 UTC | MONOLITHIC POWER SYSTEMS, INC. MPWR · Entity 877 | SaleCommon Stock | 1,210 | $380.63 | $460,564.72 |
DisclosureSEC source: 0001280452-21-000031 · edgardoc.xml · nonDerivative · entry 4 Sciammas Maurice · CIK 0001360833 · Sr. V.P.of Sales and Marketing 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 345,626 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 $380.06 to $381.02. 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.