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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":55694,"source":{"system":"sec-edgar","filing":"0001214659-22-014799","document":"marketforms-57847.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922014799/marketforms-57847.xml","form_type":"4"}},{"id":2089532,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-12-12T23:14:14.000Z","date":"2022-12-12","kind":"sale","acquired":false,"shares":5196,"price":385,"value":2000460.0,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","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 $383.52 to $384.51.  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":79428,"source":{"system":"sec-edgar","filing":"0001214659-22-014799","document":"marketforms-57847.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922014799/marketforms-57847.xml","form_type":"4"}},{"id":2151220,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":28,"price":401.24,"value":11234.72,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."}],"balance_after":82938,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151219,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":340,"price":400.1,"value":136034.0,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $399.97 to $400.32.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":82966,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":17,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151218,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":1,"price":398.13,"value":398.13,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."}],"balance_after":83306,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151217,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":15,"price":396.72,"value":5950.8,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."}],"balance_after":83307,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151216,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":46,"price":393.81,"value":18115.26,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $393.70 to $394.01.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":83322,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151215,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":482,"price":392.83,"value":189344.06,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $392.61 to $393.32.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":83368,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151214,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":557,"price":391.83,"value":218249.31,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $391.48 to $392.18.  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":83850,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151213,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":209,"price":390.84,"value":81685.56,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $390.36 to $391.31.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":84407,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151212,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":276,"price":389.72,"value":107562.72,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $389.34 to $390.32.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":84616,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151211,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":155,"price":388.13,"value":60160.15,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $387.87 to $388.28.  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":84892,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151210,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":203,"price":387.54,"value":78670.62,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $386.83 to $387.81.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":85047,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151209,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":880,"price":385.87,"value":339565.6,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $385.59 to $386.28.  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":85250,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151208,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":1748,"price":384.76,"value":672560.48,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $384.46 to $385.32.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":86130,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151207,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":2072,"price":384.01,"value":795668.72,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $383.42 to $384.37.  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":87878,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151206,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":1862,"price":382.85,"value":712866.7,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $382.34 to $383.33.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":89950,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151205,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-09-22","kind":"sale","acquired":false,"shares":926,"price":381.89,"value":353630.14,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $381.32 to $382.28.  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":91812,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151204,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-08-25","kind":"gift","acquired":false,"shares":96000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"96,000 shares were transferred as an irrevocable arms-length gift from the JCM Management Trust to JM Family, LP (the \"LP\"). The reporting person does not have any direct or indirect ownership interest in the LP, and does not have any direct or indirect management control over the LP. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":92738,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2151203,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-09-26T23:47:53.000Z","date":"2022-08-18","kind":"gift","acquired":false,"shares":76925,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"JCM Management Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"76,925 shares were transferred as an irrevocable arms-length gift from the  JCM Management Trust to The MF Community Impact, Inc. (the \"Organization\").  The reporting person does not have any direct or indirect ownership interest in the Organization, and does not have any direct or indirect management control over the Organization. No funds were exchanged and no sale of shares occurred in the transfer."}],"balance_after":188738,"source":{"system":"sec-edgar","filing":"0001214659-22-011531","document":"marketforms-56927.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922011531/marketforms-56927.xml","form_type":"4"}},{"id":2406175,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-10T00:00:32.000Z","date":"2022-02-08","kind":"grant","acquired":true,"shares":542,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 8, 2022, the Board of Directors approved the annual restricted stock unit grant of 542 shares to each independent director.  The RSU grant will vest one year after the grant date, subject to continued service with the company."}],"balance_after":234383,"source":{"system":"sec-edgar","filing":"0001214659-22-002139","document":"marketforms-55216.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465922002139/marketforms-55216.xml","form_type":"4"}},{"id":2504571,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-11-19T00:49:02.000Z","date":"2021-11-12","kind":"sale","acquired":false,"shares":2000,"price":555.31,"value":1110620.0,"ownership":{"direct":false,"nature":"by Moyer FamilyTrust"},"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 $555.20 to $555.98.  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":64823,"source":{"system":"sec-edgar","filing":"0001214659-21-012039","document":"marketforms-54172.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921012039/marketforms-54172.xml","form_type":"4"}},{"id":2608320,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-08-10T22:27:28.000Z","date":"2021-08-06","kind":"sale","acquired":false,"shares":2019,"price":461.16,"value":931082.04,"ownership":{"direct":false,"nature":"by Moyer FamilyTrust"},"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 $461.00 to $461.69.  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":66823,"source":{"system":"sec-edgar","filing":"0001214659-21-008332","document":"marketforms-53550.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921008332/marketforms-53550.xml","form_type":"4"}},{"id":2608319,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-08-10T22:27:28.000Z","date":"2021-08-06","kind":"sale","acquired":false,"shares":2981,"price":460.22,"value":1371915.82,"ownership":{"direct":false,"nature":"by Moyer FamilyTrust"},"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 $460.00 to $460.99.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":68842,"source":{"system":"sec-edgar","filing":"0001214659-21-008332","document":"marketforms-53550.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921008332/marketforms-53550.xml","form_type":"4"}},{"id":2608318,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-08-10T22:27:28.000Z","date":"2021-08-06","kind":"sale","acquired":false,"shares":2000,"price":461.53,"value":923060.0,"ownership":{"direct":false,"nature":"by spouse, Fran Moyer"},"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 $461.16 to $461.71.  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":0,"source":{"system":"sec-edgar","filing":"0001214659-21-008332","document":"marketforms-53550.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921008332/marketforms-53550.xml","form_type":"4"}},{"id":2631852,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-07-16T21:57:21.000Z","date":"2021-07-16","kind":"sale","acquired":false,"shares":506,"price":383.32,"value":193959.92,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $383.18 to $383.69.  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":233841,"source":{"system":"sec-edgar","filing":"0001214659-21-007602","document":"marketforms-53250.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921007602/marketforms-53250.xml","form_type":"4"}},{"id":2631851,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-07-16T21:57:21.000Z","date":"2021-07-16","kind":"sale","acquired":false,"shares":1425,"price":382.57,"value":545162.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $382.18 to $382.99.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":234347,"source":{"system":"sec-edgar","filing":"0001214659-21-007602","document":"marketforms-53250.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921007602/marketforms-53250.xml","form_type":"4"}},{"id":2631850,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-07-16T21:57:21.000Z","date":"2021-07-16","kind":"sale","acquired":false,"shares":5848,"price":381.53,"value":2231187.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $381.17 to $382.15.  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":235772,"source":{"system":"sec-edgar","filing":"0001214659-21-007602","document":"marketforms-53250.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921007602/marketforms-53250.xml","form_type":"4"}},{"id":2631849,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-07-16T21:57:21.000Z","date":"2021-07-16","kind":"sale","acquired":false,"shares":3551,"price":380.82,"value":1352291.82,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $380.17 to $381.16.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":241620,"source":{"system":"sec-edgar","filing":"0001214659-21-007602","document":"marketforms-53250.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921007602/marketforms-53250.xml","form_type":"4"}},{"id":2631848,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-07-16T21:57:21.000Z","date":"2021-07-16","kind":"sale","acquired":false,"shares":670,"price":379.59,"value":254325.3,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $379.17 to $380.13.  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":245171,"source":{"system":"sec-edgar","filing":"0001214659-21-007602","document":"marketforms-53250.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921007602/marketforms-53250.xml","form_type":"4"}},{"id":2668052,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-06-15T22:08:08.000Z","date":"2021-06-11","kind":"sale","acquired":false,"shares":1478,"price":344.77,"value":509570.06,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $344.68 to $344.98.  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":245841,"source":{"system":"sec-edgar","filing":"0001214659-21-006613","document":"marketforms-53112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921006613/marketforms-53112.xml","form_type":"4"}},{"id":2668051,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-06-15T22:08:08.000Z","date":"2021-06-11","kind":"sale","acquired":false,"shares":4092,"price":343.98,"value":1407566.16,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $343.64 to $344.59.  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":247319,"source":{"system":"sec-edgar","filing":"0001214659-21-006613","document":"marketforms-53112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921006613/marketforms-53112.xml","form_type":"4"}},{"id":2668050,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-06-15T22:08:08.000Z","date":"2021-06-11","kind":"sale","acquired":false,"shares":4465,"price":343.18,"value":1532298.7,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $342.64 to $343.62.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":251411,"source":{"system":"sec-edgar","filing":"0001214659-21-006613","document":"marketforms-53112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921006613/marketforms-53112.xml","form_type":"4"}},{"id":2668049,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-06-15T22:08:08.000Z","date":"2021-06-11","kind":"sale","acquired":false,"shares":2568,"price":342.11,"value":878538.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Shares sold pursuant to the reporting person's 10b5-1 plan."},{"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 $341.61 to $342.60.  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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Ending balance adjusted to to reflect directly held shares not previously reported."}],"balance_after":255876,"source":{"system":"sec-edgar","filing":"0001214659-21-006613","document":"marketforms-53112.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000121465921006613/marketforms-53112.xml","form_type":"4"}},{"id":2866308,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":100,"price":381.7857,"value":38178.57,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $381.52 to $381.98.  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":233841,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866307,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":694,"price":380.6149,"value":264146.7406,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $380.22 to $381.16.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":233941,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866306,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":856,"price":379.165,"value":324565.24,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $378.84 to $379.69.  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":234635,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866305,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1083,"price":378.3298,"value":409731.1734,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $377.81 to $378.80.  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":235491,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866304,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1380,"price":377.1908,"value":520523.304,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $376.74 to $377.73.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":236574,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866303,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1015,"price":376.1785,"value":381821.1775,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $375.72 to $376.71.  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":237954,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866302,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":2299,"price":374.9336,"value":861972.3464,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $374.53 to $375.51.  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":238969,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866301,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1273,"price":373.9173,"value":475996.7229,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $373.46 to $374.41.  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":241268,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866300,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1607,"price":373.0077,"value":599423.3739,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $372.43 to $373.41.  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":242541,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866299,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1095,"price":371.7776,"value":407096.472,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $371.37 to $372.24.  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":244148,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866298,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1179,"price":370.7628,"value":437129.3412,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $370.32 to $371.32.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":245243,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866297,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":1429,"price":369.7792,"value":528414.4768,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $369.29 to $370.29.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":246422,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866296,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":686,"price":368.3218,"value":252668.7548,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $368.09 to $368.97.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":247851,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2866295,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-11T22:46:13.000Z","date":"2021-02-09","kind":"sale","acquired":false,"shares":304,"price":367.4962,"value":111718.8448,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $367.07 to $367.79.  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":248537,"source":{"system":"sec-edgar","filing":"0001280452-21-000028","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000028/edgardoc.xml","form_type":"4"}},{"id":2879017,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-02-05T00:52:50.000Z","date":"2021-02-02","kind":"grant","acquired":true,"shares":533,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 2, 2021, the Nominating and Governance Committee of the Board of Directors approved the annual restricted stock unit grant of 533 shares to each independent director. The RSU grant will vest one year after the grant date, subject to continued service with the company."}],"balance_after":248841,"source":{"system":"sec-edgar","filing":"0001280452-21-000018","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045221000018/edgardoc.xml","form_type":"4"}},{"id":2949971,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-10T21:23:35.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":1177,"price":324.7199,"value":382195.3223,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $324.46 to $325.19.  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":248308,"source":{"system":"sec-edgar","filing":"0001280452-20-000189","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000189/edgardoc.xml","form_type":"4"}},{"id":2949970,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-10T21:23:35.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":896,"price":324.0554,"value":290353.6384,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $323.32 to $324.30.  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":249485,"source":{"system":"sec-edgar","filing":"0001280452-20-000189","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000189/edgardoc.xml","form_type":"4"}},{"id":2949969,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-10T21:23:35.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":951,"price":322.7328,"value":306918.8928,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $322.30 to $323.27.  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":250381,"source":{"system":"sec-edgar","filing":"0001280452-20-000189","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000189/edgardoc.xml","form_type":"4"}},{"id":2949968,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-10T21:23:35.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":870,"price":321.3152,"value":279544.224,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $321.00 to $321.88.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":251332,"source":{"system":"sec-edgar","filing":"0001280452-20-000189","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000189/edgardoc.xml","form_type":"4"}},{"id":2949967,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-10T21:23:35.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":3362,"price":320.3289,"value":1076945.7618,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $320.00 to $320.84.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":252202,"source":{"system":"sec-edgar","filing":"0001280452-20-000189","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000189/edgardoc.xml","form_type":"4"}},{"id":2949966,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-10T21:23:35.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":7158,"price":319.6216,"value":2287851.4128,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $319.00 to $319.98.  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":255564,"source":{"system":"sec-edgar","filing":"0001280452-20-000189","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000189/edgardoc.xml","form_type":"4"}},{"id":2949965,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-12-10T21:23:35.000Z","date":"2020-12-08","kind":"sale","acquired":false,"shares":586,"price":318.5281,"value":186657.4666,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $318.00 to $318.85.  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":262722,"source":{"system":"sec-edgar","filing":"0001280452-20-000189","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000189/edgardoc.xml","form_type":"4"}},{"id":2977272,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-11-17T21:42:06.000Z","date":"2020-11-13","kind":"sale","acquired":false,"shares":1000,"price":307.699,"value":307699.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares held in spouse name."},{"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 $307.60 to $307.835.  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":263308,"source":{"system":"sec-edgar","filing":"0001280452-20-000187","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000187/edgardoc.xml","form_type":"4"}},{"id":2983140,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-11-12T21:49:36.000Z","date":"2020-11-10","kind":"sale","acquired":false,"shares":15000,"price":308.3806,"value":4625709.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $302.525 to $316.66.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":264308,"source":{"system":"sec-edgar","filing":"0001280452-20-000181","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000181/edgardoc.xml","form_type":"4"}},{"id":3034249,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-09-10T21:11:15.000Z","date":"2020-09-08","kind":"sale","acquired":false,"shares":15000,"price":248.0305,"value":3720457.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $244.24 to $252.81.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":279308,"source":{"system":"sec-edgar","filing":"0001280452-20-000156","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000156/edgardoc.xml","form_type":"4"}},{"id":3045343,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-08-27T20:59:51.000Z","date":"2020-08-26","kind":"sale","acquired":false,"shares":10000,"price":268.8254,"value":2688254.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares held in spouse name."},{"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 $266.97 to $272.72.  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":294308,"source":{"system":"sec-edgar","filing":"0001280452-20-000148","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000148/edgardoc.xml","form_type":"4"}},{"id":3145205,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-18T20:31:04.000Z","date":"2020-05-14","kind":"sale","acquired":false,"shares":10000,"price":195.3418,"value":1953418.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program."},{"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 $195.00 to $196.23.  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":304308,"source":{"system":"sec-edgar","filing":"0001280452-20-000099","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000099/edgardoc.xml","form_type":"4"}},{"id":3150616,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-13T20:49:19.000Z","date":"2020-05-11","kind":"sale","acquired":false,"shares":14000,"price":210.4285,"value":2945999.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $207.85 to $213.19.  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":314308,"source":{"system":"sec-edgar","filing":"0001280452-20-000094","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000094/edgardoc.xml","form_type":"4"}},{"id":3176402,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-04-15T21:25:48.000Z","date":"2020-04-13","kind":"sale","acquired":false,"shares":14000,"price":170.7445,"value":2390423.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $166.74 to $173.10.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":328308,"source":{"system":"sec-edgar","filing":"0001280452-20-000070","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000070/edgardoc.xml","form_type":"4"}},{"id":3215481,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-03-11T21:37:11.000Z","date":"2020-03-09","kind":"sale","acquired":false,"shares":19000,"price":152.6627,"value":2900591.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $148.80 to $158.51.  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":342308,"source":{"system":"sec-edgar","filing":"0001280452-20-000056","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000056/edgardoc.xml","form_type":"4"}},{"id":3252623,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-02-24T18:40:42.000Z","date":"2020-02-20","kind":"sale","acquired":false,"shares":10000,"price":184.383,"value":1843830.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares held in spouse name."},{"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 $184.33 to $184.70.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":361308,"source":{"system":"sec-edgar","filing":"0001280452-20-000053","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000053/edgardoc.xml","form_type":"4"}},{"id":3270302,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-02-14T22:12:50.000Z","date":"2020-02-12","kind":"grant","acquired":true,"shares":1048,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 12, 2020, the Nominating and Governance Committee of the Board of Directors approved the annual restricted stock unit grant of 1,048 shares to each independent director.  The RSU grant will vest one year after the grant date, subject to continued service with the company."}],"balance_after":371308,"source":{"system":"sec-edgar","filing":"0001280452-20-000047","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000047/edgardoc.xml","form_type":"4"}},{"id":3310672,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-01-15T22:48:04.000Z","date":"2020-01-13","kind":"sale","acquired":false,"shares":19000,"price":179.1123,"value":3403133.7,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $177.52 to $179.90.  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":370260,"source":{"system":"sec-edgar","filing":"0001280452-20-000010","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045220000010/edgardoc.xml","form_type":"4"}},{"id":3353855,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-03T21:58:09.000Z","date":"2019-12-02","kind":"sale","acquired":false,"shares":19000,"price":158.5814,"value":3013046.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $157.735 to $161.65.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":389260,"source":{"system":"sec-edgar","filing":"0001280452-19-000184","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000184/edgardoc.xml","form_type":"4"}},{"id":3369764,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-11-15T22:04:21.000Z","date":"2019-11-13","kind":"sale","acquired":false,"shares":10000,"price":160.309,"value":1603090.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares held in spouse name."},{"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 $160.26 to $160.70.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":408260,"source":{"system":"sec-edgar","filing":"0001280452-19-000178","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000178/edgardoc.xml","form_type":"4"}},{"id":3395203,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-09T21:31:34.000Z","date":"2019-10-07","kind":"sale","acquired":false,"shares":19000,"price":150.7158,"value":2863600.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $148.89 to $152.99.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":418260,"source":{"system":"sec-edgar","filing":"0001280452-19-000150","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000150/edgardoc.xml","form_type":"4"}},{"id":3407779,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-09-23T21:24:37.000Z","date":"2019-09-19","kind":"sale","acquired":false,"shares":20000,"price":158.0184,"value":3160368.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $156.16 to $159.715.  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":437260,"source":{"system":"sec-edgar","filing":"0001280452-19-000136","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000136/edgardoc.xml","form_type":"4"}},{"id":3434288,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-08-19T21:26:57.000Z","date":"2019-08-15","kind":"sale","acquired":false,"shares":10000,"price":145.52,"value":1455200.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares held in spouse name."},{"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 $145.23 to $145.85.  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":457260,"source":{"system":"sec-edgar","filing":"0001280452-19-000121","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000121/edgardoc.xml","form_type":"4"}},{"id":3460619,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-07-16T21:33:57.000Z","date":"2019-07-15","kind":"sale","acquired":false,"shares":20000,"price":143.53,"value":2870600.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $142.61 to $144.35.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":467260,"source":{"system":"sec-edgar","filing":"0001280452-19-000090","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000090/edgardoc.xml","form_type":"4"}},{"id":3504497,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-03T21:29:10.000Z","date":"2019-05-30","kind":"sale","acquired":false,"shares":10000,"price":118.31,"value":1183100.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares held in spouse name."},{"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 $118.27 to $118.73.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":487260,"source":{"system":"sec-edgar","filing":"0001280452-19-000075","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000075/edgardoc.xml","form_type":"4"}},{"id":3527483,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-05-14T21:38:31.000Z","date":"2019-05-13","kind":"sale","acquired":false,"shares":15000,"price":129.1826,"value":1937739.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $126.95 to $132.95.  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":497260,"source":{"system":"sec-edgar","filing":"0001280452-19-000067","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000067/edgardoc.xml","form_type":"4"}},{"id":3558337,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-04-10T21:00:29.000Z","date":"2019-04-08","kind":"sale","acquired":false,"shares":424,"price":145.1664,"value":61550.5536,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $145.14 to $145.19.  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":512260,"source":{"system":"sec-edgar","filing":"0001437749-19-006890","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000143774919006890/rdgdoc.xml","form_type":"4"}},{"id":3558336,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-04-10T21:00:29.000Z","date":"2019-04-08","kind":"sale","acquired":false,"shares":2980,"price":144.6672,"value":431108.256,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $144.105 to $145.09.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":512684,"source":{"system":"sec-edgar","filing":"0001437749-19-006890","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000143774919006890/rdgdoc.xml","form_type":"4"}},{"id":3558335,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true}}],"security":"Common Stock","published_at":"2019-04-10T21:00:29.000Z","date":"2019-04-08","kind":"sale","acquired":false,"shares":11596,"price":143.6945,"value":1666281.422,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $143.075 to $144.07.  The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":515664,"source":{"system":"sec-edgar","filing":"0001437749-19-006890","document":"rdgdoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000143774919006890/rdgdoc.xml","form_type":"4"}},{"id":3599167,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-03-12T21:00:59.000Z","date":"2019-03-11","kind":"sale","acquired":false,"shares":15000,"price":137.0144,"value":2055216.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $133.47 to $138.145.  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":527260,"source":{"system":"sec-edgar","filing":"0001280452-19-000039","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000039/edgardoc.xml","form_type":"4"}},{"id":3641540,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-02-21T22:18:51.000Z","date":"2019-02-21","kind":"sale","acquired":false,"shares":10000,"price":134.664,"value":1346640.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction was executed during an authorized trading window in compliance with the Company's Insider Trading Compliance Program."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents shares held in spouse name."},{"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 $134.54 to $135.03.  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":542260,"source":{"system":"sec-edgar","filing":"0001280452-19-000031","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000031/edgardoc.xml","form_type":"4"}},{"id":3662789,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-02-12T23:03:20.000Z","date":"2019-02-11","kind":"grant","acquired":true,"shares":1339,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"According to the Company's 2014 Equity Incentive Plan and the Board Compensation Schedule as adopted by the Board on February 11, 2019, each Outside Director will be automatically granted Restricted Stock Units as of such date, if he or she will have served on the Board for at least the preceding six (6) months, with such grant to be effective as of the date of the meeting of the Board or Compensation Committee, as applicable, subject to the Outside Director's continued service to the Board through such date. 100% of the restricted stock units shall vest on the first anniversary of the Vesting Commencement Date."}],"balance_after":552260,"source":{"system":"sec-edgar","filing":"0001280452-19-000018","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000018/edgardoc.xml","form_type":"4"}},{"id":3695437,"issuer":{"id":877,"kind":"organization","name":"MONOLITHIC POWER SYSTEMS, INC.","symbol":"MPWR"},"owners":[{"id":87911,"kind":"person","name":"Moyer James C","position":1,"cik":"0001308656","reported_name":"Moyer James C","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-01-15T22:53:54.000Z","date":"2019-01-14","kind":"sale","acquired":false,"shares":15000,"price":120.5909,"value":1808863.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In accordance with the reporting person's 10b5-1 trading plan."},{"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 $119.20 to $122.05.  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":570921,"source":{"system":"sec-edgar","filing":"0001280452-19-000002","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1280452/000128045219000002/edgardoc.xml","form_type":"4"}}],"next_cursor":"2019-01-15T22:53:54.000000Z,3695437"}