{"transactions":[{"id":694027,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-08-07T00:31:18.000Z","date":"2026-08-04","kind":"gift","planned":false,"acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"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."}],"balance_after":36062,"source":{"system":"sec-edgar","filing":"0001214659-26-009744","document":"marketforms-73704.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926009744/marketforms-73704.xml","form_type":"4"}},{"id":694026,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-08-07T00:31:18.000Z","date":"2026-08-04","kind":"gift","planned":false,"acquired":false,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."}],"balance_after":126644,"source":{"system":"sec-edgar","filing":"0001214659-26-009744","document":"marketforms-73704.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926009744/marketforms-73704.xml","form_type":"4"}},{"id":695459,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-08-05T21:33:16.000Z","date":"2026-08-03","kind":"sale","planned":true,"acquired":false,"shares":30,"price":1343.94,"value":40318.2,"ownership":{"direct":false,"nature":"Clement Sciammas Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025."}],"balance_after":1119,"source":{"system":"sec-edgar","filing":"0001214659-26-009676","document":"marketforms-73662.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926009676/marketforms-73662.xml","form_type":"4"}},{"id":706672,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":110,"price":1405.71,"value":154628.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F19","text":"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 $1,404.25 to $1,406.04.  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."}],"balance_after":151644,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706671,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":117,"price":1400.45,"value":163852.65,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F18","text":"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 $1,398.97 to $1,400.85.  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."}],"balance_after":151754,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706670,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":213,"price":1396.16,"value":297382.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F17","text":"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 $1,393.94 to $1,398.92.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":151871,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706669,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":50,"price":1388.19,"value":69409.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F16","text":"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 $1,388.18 to $1,388.22.  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."}],"balance_after":152084,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706668,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":410,"price":1384.11,"value":567485.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F15","text":"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 $1,381.79 to $1,386.22.  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."}],"balance_after":152134,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706667,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":418,"price":1378.73,"value":576309.14,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F14","text":"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 $1,376.51 to $1,381.11.  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."}],"balance_after":152544,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706666,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":472,"price":1375.47,"value":649221.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"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 $1,371.23 to $1,376.20.  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."}],"balance_after":152962,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706665,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":240,"price":1369.18,"value":328603.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"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 $1,366.15 to $1,371.04.  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."}],"balance_after":153434,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706664,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":50,"price":1359.36,"value":67968.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"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 $1,357.88 to $1,362.57. 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."}],"balance_after":153674,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706663,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":5640,"price":1352.95,"value":7630638.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"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 $1,352.13 to $1,357.03. 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."}],"balance_after":153724,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706662,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":1506,"price":1348.91,"value":2031458.46,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"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 $1,347.09 to $1,352.00.  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."}],"balance_after":159364,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706661,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":1864,"price":1344.16,"value":2505514.24,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"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 $1,341.99 to $1,346.96. 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."}],"balance_after":160870,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706660,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":1460,"price":1339.59,"value":1955801.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"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 $1,336.97 to $1,341.96. 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."}],"balance_after":162734,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706659,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":776,"price":1334.59,"value":1035641.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 $1,331.95 to $1,336.95. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":164194,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706658,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":464,"price":1329.3,"value":616795.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"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 $1,326.94 to $1,331.90. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":164970,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706657,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":409,"price":1323.93,"value":541487.37,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 $1,321.72 to $1,326.11.  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."}],"balance_after":165434,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706656,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":274,"price":1318.42,"value":361247.08,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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 $1,316.56 to $1,321.56. 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."}],"balance_after":165843,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":706655,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-17T21:43:36.000Z","date":"2026-07-15","kind":"sale","planned":true,"acquired":false,"shares":527,"price":1314.03,"value":692493.81,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 $1,311.45 to $1,316.40 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."}],"balance_after":166117,"source":{"system":"sec-edgar","filing":"0001214659-26-008703","document":"marketforms-73614.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008703/marketforms-73614.xml","form_type":"4"}},{"id":714878,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-07-06T21:51:36.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":30,"price":1351.61,"value":40548.3,"ownership":{"direct":false,"nature":"Clement Sciammas Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025."}],"balance_after":1149,"source":{"system":"sec-edgar","filing":"0001214659-26-008236","document":"marketforms-73526.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926008236/marketforms-73526.xml","form_type":"4"}},{"id":751355,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-06-03T21:31:58.000Z","date":"2026-06-01","kind":"sale","planned":true,"acquired":false,"shares":30,"price":1533.95,"value":46018.5,"ownership":{"direct":false,"nature":"Clement Sciammas Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/19/2025."}],"balance_after":1179,"source":{"system":"sec-edgar","filing":"0001214659-26-007138","document":"marketforms-73342.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926007138/marketforms-73342.xml","form_type":"4"}},{"id":754433,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-06-02T22:36:40.000Z","date":"2026-05-29","kind":"gift","planned":false,"acquired":false,"shares":12472,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reported transaction involved distributions of securities from the various GRATs, of which the reporting person is a trustee, to individuals who are not immediate family members sharing the same household. No funds were exchanged and no sale of shares occurred in the distributions. Following the completion of the distributions, neither the GRATs nor the reporting person retains any pecuniary interest in the shares."}],"balance_after":12625,"source":{"system":"sec-edgar","filing":"0001214659-26-007088","document":"marketforms-73311.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926007088/marketforms-73311.xml","form_type":"4"}},{"id":771700,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":50,"price":1585.51,"value":79275.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"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 $1,585.17 to $1,586.76.  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."}],"balance_after":166644,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":771699,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":447,"price":1582.21,"value":707247.87,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"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 $1,579.97 to $1,584.43.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":166694,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":771698,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":703,"price":1577.75,"value":1109158.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"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 $1,574.9 to $1,579.7.  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."}],"balance_after":167141,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":771697,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":1312,"price":1571.49,"value":2061794.88,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 $1,569.78 to $1,574.53.  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."}],"balance_after":167844,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":771696,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":2020,"price":1567.15,"value":3165643.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"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 $1,564.75 to $1,569.67.  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."}],"balance_after":169156,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":771695,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":2010,"price":1562.01,"value":3139640.1,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 $1,559.61 to $1,564.59.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":171176,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":771694,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":1717,"price":1557.48,"value":2674193.16,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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 $1,554.59 to $1,559.37.  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."}],"balance_after":173186,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":771693,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-19T23:09:36.000Z","date":"2026-05-15","kind":"sale","planned":true,"acquired":false,"shares":3741,"price":1550.36,"value":5799896.76,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction was made pursuant to a Rule 10b5-1 trading plan adopted on 11/24/2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 $1,549.62 to $1,554.55.  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."}],"balance_after":174903,"source":{"system":"sec-edgar","filing":"0001214659-26-006583","document":"marketforms-73194.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006583/marketforms-73194.xml","form_type":"4"}},{"id":776886,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-15T23:45:32.000Z","date":"2026-05-13","kind":"gift","planned":false,"acquired":true,"shares":1563,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Sciammas Family Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"1,563 shares were received by the Sciammas Family Trust, of which the reporting person is a Trustee, and transferred from three GRATs, of which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":51023,"source":{"system":"sec-edgar","filing":"0001214659-26-006521","document":"marketforms-73173.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926006521/marketforms-73173.xml","form_type":"4"}},{"id":776885,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-05-15T23:45:32.000Z","date":"2026-05-13","kind":"gift","planned":false,"acquired":false,"shares":1563,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"1,563 shares were transferred from three GRATs, of which the reporting person is a Trustee, to the Sciammas Family Trust, of which the reporting person is a Trustee. 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The prices for the transactions reported on this line range from $1,094.79 to $1,095.19. 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."}],"balance_after":1269,"source":{"system":"sec-edgar","filing":"0001214659-26-003765","document":"marketforms-72730.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926003765/marketforms-72730.xml","form_type":"4"}},{"id":907397,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-02-13T00:37:39.000Z","date":"2026-02-11","kind":"sale","planned":false,"acquired":false,"shares":200,"price":1179.975,"value":235995.0,"ownership":{"direct":false,"nature":"Clement Sciammas Trust"},"balance_after":1299,"source":{"system":"sec-edgar","filing":"0001214659-26-001626","document":"marketforms-72130.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926001626/marketforms-72130.xml","form_type":"4"}},{"id":911618,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-02-10T23:57:53.000Z","date":"2026-02-06","kind":"sale","planned":false,"acquired":false,"shares":22875,"price":1171.1637,"value":26790369.6375,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the release of restricted stock units, as required by the Company's equity incentive plan."}],"balance_after":178625,"source":{"system":"sec-edgar","filing":"0001214659-26-001449","document":"marketforms-72092.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465926001449/marketforms-72092.xml","form_type":"4"}},{"id":917566,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2026-02-05T23:56:35.000Z","date":"2026-02-03","kind":"grant","planned":false,"acquired":true,"shares":57170,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 7, 2023, the reporting person was granted performance-based restricted stock units (\"PSUs\") subject to the achievement of performance conditions over a three-year performance period. On February 3, 2026, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance criteria for the PSUs, which resulted in 57,170 shares being awarded to the reporting person, subject to tax withholdings. 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The prices for the transactions reported on this line range from $886.00 to $886.15. 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."}],"balance_after":148306,"source":{"system":"sec-edgar","filing":"0001214659-25-017016","document":"marketforms-71317.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017016/marketforms-71317.xml","form_type":"4"}},{"id":992424,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:48:00.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":1738,"price":885.1,"value":1538303.8,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F11","text":"The price is the weighted average sale price for the transactions reported on this line. 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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."}],"balance_after":149116,"source":{"system":"sec-edgar","filing":"0001214659-25-017016","document":"marketforms-71317.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017016/marketforms-71317.xml","form_type":"4"}},{"id":992423,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:48:00.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":2149,"price":884.44,"value":1900661.56,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price is the weighted average sale price for the transactions reported on this line. 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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."}],"balance_after":150854,"source":{"system":"sec-edgar","filing":"0001214659-25-017016","document":"marketforms-71317.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017016/marketforms-71317.xml","form_type":"4"}},{"id":992422,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:48:00.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":6513,"price":883.5,"value":5754235.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F9","text":"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 $883.00 to $883.93. 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."}],"balance_after":153003,"source":{"system":"sec-edgar","filing":"0001214659-25-017016","document":"marketforms-71317.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017016/marketforms-71317.xml","form_type":"4"}},{"id":992421,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:48:00.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":3344,"price":882.51,"value":2951113.44,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price is the weighted average sale price for the transactions reported on this line. 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The prices for the transactions reported on this line range from $878.00 to $878.97. 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The prices for the transactions reported on this line range from $877.00 to $877.97. 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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."}],"balance_after":174901,"source":{"system":"sec-edgar","filing":"0001214659-25-017016","document":"marketforms-71317.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017016/marketforms-71317.xml","form_type":"4"}},{"id":992414,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:48:00.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":431,"price":875.26,"value":377237.06,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price is the weighted average sale price for the transactions reported on this line. 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The prices for the transactions reported on this line range from $874.09 to $874.90. 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The prices for the transactions reported on this line range from $872.74 to $872.89. 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."}],"balance_after":178149,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992410,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":220,"price":871.45,"value":191719.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F7","text":"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 $871.39 to $871.64. 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."}],"balance_after":178723,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992409,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":320,"price":870.36,"value":278515.2,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 $870.07 to $870.98. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":178943,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992408,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":1842,"price":869.39,"value":1601416.38,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"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 $869.00 to $869.91. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":179263,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992407,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":723,"price":868.42,"value":627867.66,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 $868.00 to $868.94. 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."}],"balance_after":181105,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992406,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":699,"price":867.57,"value":606431.43,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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 $867.04 to $867.98. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":181828,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992405,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":339,"price":866.19,"value":293638.41,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 $866.16 to $866.51. 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."}],"balance_after":182527,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992404,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":40,"price":865.89,"value":34635.6,"ownership":{"direct":true},"balance_after":182866,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992403,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":160,"price":863.86,"value":138217.6,"ownership":{"direct":true},"balance_after":182906,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":992402,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-20T21:47:14.000Z","date":"2025-11-19","kind":"sale","planned":false,"acquired":false,"shares":240,"price":862.58,"value":207019.2,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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 $862.25 to $862.75. 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."}],"balance_after":183066,"source":{"system":"sec-edgar","filing":"0001214659-25-017014","document":"marketforms-71316.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925017014/marketforms-71316.xml","form_type":"4"}},{"id":998780,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-14T23:31:09.000Z","date":"2025-11-13","kind":"gift","planned":false,"acquired":true,"shares":4530,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Sciammas Family Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"4,530 shares were received by the Sciammas Family Trust, on which the reporting person is a Trustee, and transferred from two GRATs, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":49460,"source":{"system":"sec-edgar","filing":"0001214659-25-016758","document":"marketforms-71277.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925016758/marketforms-71277.xml","form_type":"4"}},{"id":998779,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-11-14T23:31:09.000Z","date":"2025-11-13","kind":"gift","planned":false,"acquired":false,"shares":4530,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"4,530 shares were transferred from two GRATs, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. 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On October 25, 2025, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance criteria for the MSUs, which resulted in 135,520 shares being awarded to the reporting person. All of the shares fully vested on October 25, 2025, pursuant to the grant agreement."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Ending balance includes 4 shares acquired on August 15, 2025 through the Company's qualified ESPP program."}],"balance_after":237849,"source":{"system":"sec-edgar","filing":"0001214659-25-015474","document":"marketforms-71131.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925015474/marketforms-71131.xml","form_type":"4"}},{"id":1059140,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-08-21T21:09:58.000Z","date":"2025-08-19","kind":"gift","planned":false,"acquired":true,"shares":1499,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Rosalind Sciammas Brokerage  Account"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"1,499 shares were received by the Rosalind Sciammas brokerage account from Sciammas Siblings 2021 GRATs. No funds were exchanged, and no sale of shares occurred in the transfer"}],"balance_after":1499,"source":{"system":"sec-edgar","filing":"0001214659-25-012568","document":"marketforms-70315.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925012568/marketforms-70315.xml","form_type":"4"}},{"id":1059139,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-08-21T21:09:58.000Z","date":"2025-08-19","kind":"gift","planned":false,"acquired":false,"shares":1499,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"1,499 shares were distributed from the Sciammas Siblings 2021 GRATs, on which the reporting person is a Trustee, to the Rosalind Sciammas brokerage account. 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In addition, the Company has determined that the reporting person does not have any management or investment control or any other pecuniary interests over the shares. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":1000,"source":{"system":"sec-edgar","filing":"0001214659-25-012568","document":"marketforms-70315.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925012568/marketforms-70315.xml","form_type":"4"}},{"id":1071261,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-08-08T16:40:45.000Z","date":"2025-08-06","kind":"gift","planned":false,"acquired":false,"shares":1418,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Christina Sciammas Trust FBO Oski Crew"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"1,418 shares were transferred out of the Christina Sciammas 2022 Trust for Oski Crew, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":9481,"source":{"system":"sec-edgar","filing":"0001214659-25-011728","document":"marketforms-70255.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925011728/marketforms-70255.xml","form_type":"4"}},{"id":1071260,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-08-08T16:40:45.000Z","date":"2025-08-06","kind":"gift","planned":false,"acquired":false,"shares":1418,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Maurice Sciammas Trust FBO Oski Crew"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"1,418 shares were transferred out of the Maurice Sciammas 2022 Trust for Oski Crew, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":9481,"source":{"system":"sec-edgar","filing":"0001214659-25-011728","document":"marketforms-70255.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925011728/marketforms-70255.xml","form_type":"4"}},{"id":1071259,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-08-08T16:40:45.000Z","date":"2025-08-06","kind":"gift","planned":false,"acquired":false,"shares":2000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"2,000 shares were transferred out of two Sciammas 2022 GRATs and two Sciammas 2022 Siblings GRATs, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":13727,"source":{"system":"sec-edgar","filing":"0001214659-25-011728","document":"marketforms-70255.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925011728/marketforms-70255.xml","form_type":"4"}},{"id":1071258,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-08-08T16:40:45.000Z","date":"2025-08-06","kind":"gift","planned":false,"acquired":true,"shares":4836,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Sciammas Family Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"4,836 shares were transferred to the Sciammas Family Trust, on which the reporting person is a Trustee, from two Sciammas 2022 GRATs, and two Sciammas 2022 Siblings GRATs, and two Sciammas 2022 Trusts for Oski Crew, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":44930,"source":{"system":"sec-edgar","filing":"0001214659-25-011728","document":"marketforms-70255.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925011728/marketforms-70255.xml","form_type":"4"}},{"id":1129094,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-05-30T20:32:48.000Z","date":"2025-05-28","kind":"gift","planned":false,"acquired":true,"shares":1499,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Clement Sciammas (Sibling) Brokerage Account"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"1,499 shares were received by the Clement Sciammas brokerage account from the Sciammas Siblings 2021 GRATS. No funds were exchanged, and no sale of shares occurred in the transfer."}],"balance_after":1499,"source":{"system":"sec-edgar","filing":"0001214659-25-008580","document":"marketforms-69699.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925008580/marketforms-69699.xml","form_type":"4"}},{"id":1129093,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-05-30T20:32:48.000Z","date":"2025-05-28","kind":"gift","planned":false,"acquired":false,"shares":1499,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1,499 shares were distributed out of the Sciammas Siblings 2021 GRATs, on which the reporting person is a Trustee, to the Clement Sciammas brokerage account. No funds were exchanged, and no sale of shares occurred in the transfer."}],"balance_after":15727,"source":{"system":"sec-edgar","filing":"0001214659-25-008580","document":"marketforms-69699.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925008580/marketforms-69699.xml","form_type":"4"}},{"id":1152107,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-05-12T22:02:36.000Z","date":"2025-05-12","kind":"sale","planned":true,"acquired":false,"shares":12000,"price":701,"value":8412000.0,"ownership":{"direct":false,"nature":"By Sciammas Trust 2020"},"balance_after":4015,"source":{"system":"sec-edgar","filing":"0001214659-25-007417","document":"marketforms-69441.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925007417/marketforms-69441.xml","form_type":"4"}},{"id":1153524,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-05-09T23:55:15.000Z","date":"2025-05-09","kind":"gift","planned":false,"acquired":true,"shares":1878,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Sciammas Family Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"1,878 shares were received by the Sciammas Family Trust, on which the reporting person is a Trustee, from Siblings 2021 GRATS, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":40094,"source":{"system":"sec-edgar","filing":"0001214659-25-007334","document":"marketforms-69413.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925007334/marketforms-69413.xml","form_type":"4"}},{"id":1153523,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-05-09T23:55:15.000Z","date":"2025-05-09","kind":"gift","planned":false,"acquired":false,"shares":1878,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1,878 shares were transferred out of the Siblings 2021 GRATs, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged, and no sale of shares occurred in the transfer."}],"balance_after":17226,"source":{"system":"sec-edgar","filing":"0001214659-25-007334","document":"marketforms-69413.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925007334/marketforms-69413.xml","form_type":"4"}},{"id":1255394,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-21T00:02:07.000Z","date":"2025-02-18","kind":"gift","planned":false,"acquired":true,"shares":1102,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Sciammas Family Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"1,102 shares were received by the Sciammas Family Trust, on which the reporting person is a Trustee, transferred from Siblings 2021 GRATS, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":38216,"source":{"system":"sec-edgar","filing":"0001214659-25-003203","document":"marketforms-68270.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925003203/marketforms-68270.xml","form_type":"4"}},{"id":1255393,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-21T00:02:07.000Z","date":"2025-02-18","kind":"gift","planned":false,"acquired":false,"shares":1102,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Various Sciammas GRATs"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"1,102 shares were transferred from Siblings 2021 GRATs, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged, and no sale of shares occurred in the transfer."}],"balance_after":19104,"source":{"system":"sec-edgar","filing":"0001214659-25-003203","document":"marketforms-68270.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925003203/marketforms-68270.xml","form_type":"4"}},{"id":1269447,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-13T23:00:59.000Z","date":"2025-02-11","kind":"gift","planned":false,"acquired":true,"shares":5050,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Sciammas Family Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"5,050 shares were received by the Sciammas Family Trust, on which the reporting person is a Trustee, transferred from a Maurice Sciammas GRAT for Oski Crew and a Christina Sciammas GRAT for Oski Crew, on which the reporting person is a Trustee. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":37114,"source":{"system":"sec-edgar","filing":"0001214659-25-002586","document":"marketforms-68121.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925002586/marketforms-68121.xml","form_type":"4"}},{"id":1269446,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-13T23:00:59.000Z","date":"2025-02-11","kind":"gift","planned":false,"acquired":false,"shares":2525,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Christina Sciammas Trust FBO Oski Crew"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"2,525 shares were transferred from a Christina Sciammas GRAT for Oski Crew, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged, and no sale of shares occurred in the transfer."}],"balance_after":10899,"source":{"system":"sec-edgar","filing":"0001214659-25-002586","document":"marketforms-68121.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925002586/marketforms-68121.xml","form_type":"4"}},{"id":1269445,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-13T23:00:59.000Z","date":"2025-02-11","kind":"gift","planned":false,"acquired":false,"shares":2525,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"Maurice Sciammas Trust FBO Oski Crew"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"2,525 shares were transferred from a Maurice Sciammas GRAT for Oski Crew, on which the reporting person is a Trustee, to the Sciammas Family Trust, on which the reporting person is a Trustee. No funds were exchanged, and no sale of shares occurred in the transfer."}],"balance_after":10899,"source":{"system":"sec-edgar","filing":"0001214659-25-002586","document":"marketforms-68121.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925002586/marketforms-68121.xml","form_type":"4"}},{"id":1271346,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-12T20:44:48.000Z","date":"2025-02-10","kind":"sale","planned":false,"acquired":false,"shares":662,"price":717.1006,"value":474720.5972,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reported sales were to cover taxes upon the vesting of restricted stock units, as required by the Company's equity incentive plan."}],"balance_after":102301,"source":{"system":"sec-edgar","filing":"0001214659-25-002482","document":"marketforms-68078.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925002482/marketforms-68078.xml","form_type":"4"}},{"id":1273677,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-11T22:33:28.000Z","date":"2025-02-07","kind":"sale","planned":true,"acquired":false,"shares":200,"price":704.915,"value":140983.0,"ownership":{"direct":false,"nature":"By Sciammas Trust 2020"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 $704.59 to $705.24.  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."}],"balance_after":16015,"source":{"system":"sec-edgar","filing":"0001214659-25-002419","document":"marketforms-68073.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925002419/marketforms-68073.xml","form_type":"4"}},{"id":1273676,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-11T22:33:28.000Z","date":"2025-02-07","kind":"sale","planned":true,"acquired":false,"shares":1259,"price":703.8792,"value":886183.9128,"ownership":{"direct":false,"nature":"By Sciammas Trust 2020"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"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 $703.32 to $704.11.  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."}],"balance_after":16215,"source":{"system":"sec-edgar","filing":"0001214659-25-002419","document":"marketforms-68073.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925002419/marketforms-68073.xml","form_type":"4"}},{"id":1273675,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-11T22:33:28.000Z","date":"2025-02-07","kind":"sale","planned":true,"acquired":false,"shares":1600,"price":702.4606,"value":1123936.96,"ownership":{"direct":false,"nature":"By Sciammas Trust 2020"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 $702.04 to $702.93.  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."}],"balance_after":17474,"source":{"system":"sec-edgar","filing":"0001214659-25-002419","document":"marketforms-68073.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465925002419/marketforms-68073.xml","form_type":"4"}},{"id":1273674,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2025-02-11T22:33:28.000Z","date":"2025-02-07","kind":"sale","planned":true,"acquired":false,"shares":3941,"price":701.0271,"value":2762747.8011,"ownership":{"direct":false,"nature":"By Sciammas Trust 2020"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price is the weighted average sale price for the transactions reported on this line. 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The prices for the transactions reported on this line range from $932.00 to $932.90.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":104014,"source":{"system":"sec-edgar","filing":"0001214659-24-017281","document":"marketforms-67148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465924017281/marketforms-67148.xml","form_type":"4"}},{"id":1389196,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2024-10-08T17:14:04.000Z","date":"2024-10-07","kind":"sale","planned":true,"acquired":false,"shares":2304,"price":931.33,"value":2145784.32,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 $931.00 to $931.85.  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."}],"balance_after":105573,"source":{"system":"sec-edgar","filing":"0001214659-24-017281","document":"marketforms-67148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465924017281/marketforms-67148.xml","form_type":"4"}},{"id":1389195,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2024-10-08T17:14:04.000Z","date":"2024-10-07","kind":"sale","planned":true,"acquired":false,"shares":789,"price":930.51,"value":734172.39,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"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 $930.05 to $930.91.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":107877,"source":{"system":"sec-edgar","filing":"0001214659-24-017281","document":"marketforms-67148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465924017281/marketforms-67148.xml","form_type":"4"}},{"id":1389194,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":25810,"kind":"person","name":"Sciammas Maurice","position":1,"cik":"0001360833","reported_name":"Sciammas Maurice","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, WW Sales & Marketing"}}],"security":"Common Stock","published_at":"2024-10-08T17:14:04.000Z","date":"2024-10-07","kind":"sale","planned":true,"acquired":false,"shares":1774,"price":929.55,"value":1649021.7,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 $929.09 to $929.72.  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."}],"balance_after":108666,"source":{"system":"sec-edgar","filing":"0001214659-24-017281","document":"marketforms-67148.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465924017281/marketforms-67148.xml","form_type":"4"}}],"next_cursor":"2024-10-08T17:14:04.000000Z,1389194"}