{"transactions":[{"id":3127830,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2020-06-02T21:21:10.000Z","date":"2020-05-29","kind":"exercise","acquired":false,"shares":1304,"price":240.19,"value":313207.76,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These RSUs were granted on May 30, 2019 and vested in full on May 29, 2020, the date of the next annual meeting of stockholders following the date of grant."}],"balance_after":0,"derivative":{"exercise_date":"2020-05-29","expiration_date":"2029-05-30","underlying":"Common Stock","underlying_shares":1304},"source":{"system":"sec-edgar","filing":"0000937556-20-000121","document":"wf-form4_159113285303319.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755620000121/wf-form4_159113285303319.xml","form_type":"4"}},{"id":3127829,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-02T21:21:10.000Z","date":"2020-05-29","kind":"exercise","acquired":true,"shares":1304,"price":240.19,"value":313207.76,"ownership":{"direct":true},"balance_after":54522,"source":{"system":"sec-edgar","filing":"0000937556-20-000121","document":"wf-form4_159113285303319.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755620000121/wf-form4_159113285303319.xml","form_type":"4"}},{"id":3164246,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2020-05-04T20:06:07.000Z","date":"2020-04-30","kind":"exercise","acquired":false,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Reporting Person paid the exercise price by delivering shares of the Issuer's common stock and a cash payment of $14.43 for the remaining fractional share."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Reporting Person paid the exercise price by delivering shares of the Issuer's common stock and a cash payment of $14.43 for the remaining fractional share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This option was granted on May 28, 2013 and is exercisable as the option vests. This option vested over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date."}],"balance_after":0,"derivative":{"exercise_price":21.97,"exercise_date":"2014-05-28","expiration_date":"2023-05-28","underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0000937556-20-000108","document":"wf-form4_158862273961634.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755620000108/wf-form4_158862273961634.xml","form_type":"4"}},{"id":3164245,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-04T20:06:07.000Z","date":"2020-04-30","kind":"tax_withholding","acquired":false,"shares":1027,"price":213.91,"value":219685.57,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Reporting Person paid the exercise price by delivering shares of the Issuer's common stock and a cash payment of $14.43 for the remaining fractional share."}],"balance_after":53218,"source":{"system":"sec-edgar","filing":"0000937556-20-000108","document":"wf-form4_158862273961634.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755620000108/wf-form4_158862273961634.xml","form_type":"4"}},{"id":3164244,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-04T20:06:07.000Z","date":"2020-04-30","kind":"exercise","acquired":true,"shares":10000,"price":21.97,"value":219700.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Reporting Person paid the exercise price by delivering shares of the Issuer's common stock and a cash payment of $14.43 for the remaining fractional share."}],"balance_after":54245,"source":{"system":"sec-edgar","filing":"0000937556-20-000108","document":"wf-form4_158862273961634.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755620000108/wf-form4_158862273961634.xml","form_type":"4"}},{"id":3348670,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2019-12-09T23:21:44.000Z","date":"2019-12-06","kind":"exercise","acquired":false,"shares":7000,"price":41.8,"value":292600.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option was granted on December 17, 2015 and is exercisable as the option vests. The option vested on the one-year anniversary of the grant date."}],"balance_after":0,"derivative":{"exercise_price":41.8,"exercise_date":"2016-12-17","expiration_date":"2025-12-17","underlying":"Common Stock","underlying_shares":7000},"source":{"system":"sec-edgar","filing":"0000937556-19-000191","document":"wf-form4_157593368684996.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000191/wf-form4_157593368684996.xml","form_type":"4"}},{"id":3348669,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-09T23:21:44.000Z","date":"2019-12-06","kind":"sale","acquired":false,"shares":7000,"price":156.2733,"value":1093913.1,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of August 22, 2019, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $155.99 per share to a high of $156.99 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":44245,"source":{"system":"sec-edgar","filing":"0000937556-19-000191","document":"wf-form4_157593368684996.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000191/wf-form4_157593368684996.xml","form_type":"4"}},{"id":3348668,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-09T23:21:44.000Z","date":"2019-12-06","kind":"exercise","acquired":true,"shares":7000,"price":41.8,"value":292600.0,"ownership":{"direct":true},"balance_after":51245,"source":{"system":"sec-edgar","filing":"0000937556-19-000191","document":"wf-form4_157593368684996.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000191/wf-form4_157593368684996.xml","form_type":"4"}},{"id":3380816,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2019-11-05T21:38:58.000Z","date":"2019-11-04","kind":"exercise","acquired":false,"shares":6500,"price":41.8,"value":271700.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option was granted on December 17, 2015 and is exercisable as the option vests. The option vested on the one-year anniversary of the grant date."}],"balance_after":7000,"derivative":{"exercise_price":41.8,"exercise_date":"2016-12-17","expiration_date":"2025-12-17","underlying":"Common Stock","underlying_shares":6500},"source":{"system":"sec-edgar","filing":"0000937556-19-000183","document":"wf-form4_157298992345375.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000183/wf-form4_157298992345375.xml","form_type":"4"}},{"id":3380815,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-11-05T21:38:58.000Z","date":"2019-11-04","kind":"sale","acquired":false,"shares":6500,"price":147.0804,"value":956022.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of August 22, 2019, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $146.345 per share to a high of $148.245 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":44245,"source":{"system":"sec-edgar","filing":"0000937556-19-000183","document":"wf-form4_157298992345375.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000183/wf-form4_157298992345375.xml","form_type":"4"}},{"id":3380814,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-11-05T21:38:58.000Z","date":"2019-11-04","kind":"exercise","acquired":true,"shares":6500,"price":41.8,"value":271700.0,"ownership":{"direct":true},"balance_after":50745,"source":{"system":"sec-edgar","filing":"0000937556-19-000183","document":"wf-form4_157298992345375.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000183/wf-form4_157298992345375.xml","form_type":"4"}},{"id":3401746,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2019-10-02T20:55:24.000Z","date":"2019-10-01","kind":"exercise","acquired":false,"shares":6500,"price":41.8,"value":271700.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option was granted on December 17, 2015 and is exercisable as the option vests. The option vested on the one-year anniversary of the grant date."}],"balance_after":13500,"derivative":{"exercise_price":41.8,"exercise_date":"2016-12-17","expiration_date":"2025-12-17","underlying":"Common Stock","underlying_shares":6500},"source":{"system":"sec-edgar","filing":"0000937556-19-000164","document":"wf-form4_157004970081238.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000164/wf-form4_157004970081238.xml","form_type":"4"}},{"id":3401745,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-02T20:55:24.000Z","date":"2019-10-01","kind":"sale","acquired":false,"shares":6500,"price":149.4256,"value":971266.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of August 22, 2019, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $148.57 per share to a high of $150.05 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":44245,"source":{"system":"sec-edgar","filing":"0000937556-19-000164","document":"wf-form4_157004970081238.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000164/wf-form4_157004970081238.xml","form_type":"4"}},{"id":3401744,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-10-02T20:55:24.000Z","date":"2019-10-01","kind":"exercise","acquired":true,"shares":6500,"price":41.8,"value":271700.0,"ownership":{"direct":true},"balance_after":50745,"source":{"system":"sec-edgar","filing":"0000937556-19-000164","document":"wf-form4_157004970081238.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000164/wf-form4_157004970081238.xml","form_type":"4"}},{"id":3430422,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-08-23T20:04:32.000Z","date":"2019-08-22","kind":"sale","acquired":false,"shares":7000,"price":150.39,"value":1052730.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Reporting Person contributed shares of the Issuer's common stock to an exchange fund in exchange for shares of the exchange fund.  The shares of the Issuer's common stock was valued at $150.39 per share, the NASDAQ closing price on August 22, 2019, for the purpose of determining the number of shares of the exchange fund issuable to the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Reporting Person contributed shares of the Issuer's common stock to an exchange fund in exchange for shares of the exchange fund.  The shares of the Issuer's common stock was valued at $150.39 per share, the NASDAQ closing price on August 22, 2019, for the purpose of determining the number of shares of the exchange fund issuable to the Reporting Person."}],"balance_after":44245,"source":{"system":"sec-edgar","filing":"0000937556-19-000160","document":"wf-form4_156659065589537.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000160/wf-form4_156659065589537.xml","form_type":"4"}},{"id":3505447,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2019-06-03T20:14:09.000Z","date":"2019-05-30","kind":"grant","acquired":true,"shares":1304,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"These RSUs were granted on May 30, 2019 and will vest in full on the earlier of the first anniversary of the grant date or the date of the next annual meeting of stockholders following the date of grant."}],"balance_after":1304,"derivative":{"expiration_date":"2029-05-30","underlying":"Common Stock","underlying_shares":1304},"source":{"system":"sec-edgar","filing":"0000937556-19-000103","document":"wf-form4_155959283365185.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000103/wf-form4_155959283365185.xml","form_type":"4"}},{"id":3505446,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2019-06-03T20:14:09.000Z","date":"2019-05-30","kind":"exercise","acquired":false,"shares":1413,"price":137.95,"value":194923.35,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These RSUs were granted on May 31, 2018 and vested in full on May 30, 2019, the date of the next annual meeting of stockholders following the date of grant."}],"balance_after":0,"derivative":{"exercise_date":"2019-05-30","expiration_date":"2028-05-31","underlying":"Common Stock","underlying_shares":1413},"source":{"system":"sec-edgar","filing":"0000937556-19-000103","document":"wf-form4_155959283365185.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000103/wf-form4_155959283365185.xml","form_type":"4"}},{"id":3505445,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-03T20:14:09.000Z","date":"2019-05-30","kind":"exercise","acquired":true,"shares":1413,"price":137.95,"value":194923.35,"ownership":{"direct":true},"balance_after":51245,"source":{"system":"sec-edgar","filing":"0000937556-19-000103","document":"wf-form4_155959283365185.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755619000103/wf-form4_155959283365185.xml","form_type":"4"}},{"id":3744721,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-12-04T21:22:13.000Z","date":"2018-12-03","kind":"sale","acquired":false,"shares":2000,"price":110.898,"value":221796.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2018 and amended on August 28,2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $110.00 per share to a high of $112.21 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":49832,"source":{"system":"sec-edgar","filing":"0000937556-18-000166","document":"wf-form4_154395851591212.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000166/wf-form4_154395851591212.xml","form_type":"4"}},{"id":3777077,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-11-02T20:23:24.000Z","date":"2018-11-01","kind":"sale","acquired":false,"shares":2000,"price":113.1414,"value":226282.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2018 and amended on August 28,2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $108.36 per share to a high of $117.21 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":51832,"source":{"system":"sec-edgar","filing":"0000937556-18-000161","document":"wf-form4_154119018703028.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000161/wf-form4_154119018703028.xml","form_type":"4"}},{"id":3802778,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-10-02T20:30:30.000Z","date":"2018-10-01","kind":"sale","acquired":false,"shares":2000,"price":124.4983,"value":248996.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2018 and amended on August 28,2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $124.03 per share to a high of $124.86 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":53832,"source":{"system":"sec-edgar","filing":"0000937556-18-000149","document":"wf-form4_153851221172370.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000149/wf-form4_153851221172370.xml","form_type":"4"}},{"id":3818823,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2018-09-12T21:57:14.000Z","date":"2018-09-11","kind":"exercise","acquired":false,"shares":10000,"price":21.97,"value":219700.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option was granted on May 28, 2013 and is exercisable as the option vests. This option vested over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date."}],"balance_after":10000,"derivative":{"exercise_price":21.97,"exercise_date":"2014-05-28","expiration_date":"2023-05-28","underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0000937556-18-000137","document":"wf-form4_153678941857654.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000137/wf-form4_153678941857654.xml","form_type":"4"}},{"id":3818822,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-09-12T21:57:14.000Z","date":"2018-09-11","kind":"sale","acquired":false,"shares":10000,"price":118.2935,"value":1182935.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2018 and amended on August 28, 2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $117.03 per share to a high of $119.16 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":55832,"source":{"system":"sec-edgar","filing":"0000937556-18-000137","document":"wf-form4_153678941857654.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000137/wf-form4_153678941857654.xml","form_type":"4"}},{"id":3818821,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-09-12T21:57:14.000Z","date":"2018-09-11","kind":"exercise","acquired":true,"shares":10000,"price":21.97,"value":219700.0,"ownership":{"direct":true},"balance_after":65832,"source":{"system":"sec-edgar","filing":"0000937556-18-000137","document":"wf-form4_153678941857654.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000137/wf-form4_153678941857654.xml","form_type":"4"}},{"id":3827781,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-09-04T22:16:27.000Z","date":"2018-09-04","kind":"sale","acquired":false,"shares":2000,"price":119.4501,"value":238900.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sales price per share. The actual sales prices ranged from a low of $117.365 per share to a high of $120.26 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":55832,"source":{"system":"sec-edgar","filing":"0000937556-18-000133","document":"wf-form4_153609937129311.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000133/wf-form4_153609937129311.xml","form_type":"4"}},{"id":3853912,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-08-03T20:01:48.000Z","date":"2018-08-01","kind":"sale","acquired":false,"shares":2000,"price":101,"value":202000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."}],"balance_after":57832,"source":{"system":"sec-edgar","filing":"0000937556-18-000121","document":"wf-form4_153332649280320.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000121/wf-form4_153332649280320.xml","form_type":"4"}},{"id":3870682,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-07-10T20:23:22.000Z","date":"2018-07-06","kind":"sale","acquired":false,"shares":2000,"price":100,"value":200000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 7, 2018, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."}],"balance_after":59832,"source":{"system":"sec-edgar","filing":"0000937556-18-000107","document":"wf-form4_153125418661987.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000107/wf-form4_153125418661987.xml","form_type":"4"}},{"id":3887387,"issuer":{"id":7882,"kind":"organization","name":"IRIDEX CORP","symbol":"IRIX"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-20T15:50:33.000Z","date":"2018-06-13","kind":"grant","acquired":true,"shares":5690,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This footnote is restated from the original Form 4 filing to correctly reflect that each share is represented by a restricted stock unit (RSU).  Each RSU represents a contingent right to receive one share of the Issuer's Common Stock upon settlement. 100% of the RSUs vest on the earlier of June 13, 2019 or the date of the Issuer's next annual meeting of stockholders."}],"balance_after":62887,"source":{"system":"sec-edgar","filing":"0001704739-18-000034","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1006045/000170473918000034/edgar.xml","form_type":"4/A","original_submission_date":"2018-06-15"}},{"id":3892927,"issuer":{"id":7882,"kind":"organization","name":"IRIDEX CORP","symbol":"IRIX"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-16T00:13:08.000Z","date":"2018-06-13","kind":"grant","acquired":true,"shares":5690,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were issued pursuant to a restricted stock award which shall vest with respect to 100% of the shares on the earlier of June 13, 2019 or the date of the Issuer's next annual meeting of stockholders."}],"balance_after":62887,"source":{"system":"sec-edgar","filing":"0001704739-18-000031","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1006045/000170473918000031/edgar.xml","form_type":"4"}},{"id":3911427,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2018-06-01T22:09:03.000Z","date":"2018-05-31","kind":"grant","acquired":true,"shares":1413,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"These RSUs were granted on May 31, 2018 and will vest in full on the earlier of the first anniversary of the grant date or the date of the next annual meeting of stockholders following the date of the grant."}],"balance_after":1413,"derivative":{"expiration_date":"2028-05-31","underlying":"Common Stock","underlying_shares":1413},"source":{"system":"sec-edgar","filing":"0000937556-18-000100","document":"wf-form4_152789092986332.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000100/wf-form4_152789092986332.xml","form_type":"4"}},{"id":3911426,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2018-06-01T22:09:03.000Z","date":"2018-05-31","kind":"exercise","acquired":false,"shares":1583,"price":99.05,"value":156796.15,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"These RSUs were granted on June 1, 2017 and vested in full on May 31, 2018, the date of the next annual meeting of stockholders following the date of the grant."}],"balance_after":0,"derivative":{"exercise_date":"2018-05-31","expiration_date":"2027-06-01","underlying":"Common Stock","underlying_shares":1583},"source":{"system":"sec-edgar","filing":"0000937556-18-000100","document":"wf-form4_152789092986332.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000100/wf-form4_152789092986332.xml","form_type":"4"}},{"id":3911425,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-01T22:09:03.000Z","date":"2018-06-01","kind":"sale","acquired":false,"shares":2000,"price":100.2084,"value":200416.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of November 29, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $99.47 per share to a high of $100.88 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":61832,"source":{"system":"sec-edgar","filing":"0000937556-18-000100","document":"wf-form4_152789092986332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000100/wf-form4_152789092986332.xml","form_type":"4"}},{"id":3911424,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-01T22:09:03.000Z","date":"2018-05-31","kind":"exercise","acquired":true,"shares":1583,"price":99.05,"value":156796.15,"ownership":{"direct":true},"balance_after":63832,"source":{"system":"sec-edgar","filing":"0000937556-18-000100","document":"wf-form4_152789092986332.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000100/wf-form4_152789092986332.xml","form_type":"4"}},{"id":3946023,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-05-04T21:48:01.000Z","date":"2018-05-03","kind":"sale","acquired":false,"shares":2000,"price":94,"value":188000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of November 29, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."}],"balance_after":62249,"source":{"system":"sec-edgar","filing":"0000937556-18-000073","document":"wf-form4_152547046752813.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000073/wf-form4_152547046752813.xml","form_type":"4"}},{"id":3954061,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-04-30T21:50:16.000Z","date":"2018-04-30","kind":"sale","acquired":false,"shares":2000,"price":90.367,"value":180734.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of November 29, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $90.00 per share to a high of $91.12 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":64249,"source":{"system":"sec-edgar","filing":"0000937556-18-000067","document":"wf-form4_152512500284298.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000067/wf-form4_152512500284298.xml","form_type":"4"}},{"id":3977458,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-04-03T01:06:07.000Z","date":"2018-04-02","kind":"sale","acquired":false,"shares":2000,"price":86.024,"value":172048.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of November 29, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $85.20 per share to a high of $87.63 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":66249,"source":{"system":"sec-edgar","filing":"0000937556-18-000056","document":"wf-form4_152271755394219.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000056/wf-form4_152271755394219.xml","form_type":"4"}},{"id":4080079,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-02-02T23:29:50.000Z","date":"2018-02-01","kind":"sale","acquired":false,"shares":2000,"price":93.065,"value":186130.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of November 29, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $92.47 per share to a high of $93.72 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":68249,"source":{"system":"sec-edgar","filing":"0000937556-18-000012","document":"wf-form4_151761417565967.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000012/wf-form4_151761417565967.xml","form_type":"4"}},{"id":4088789,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-01-26T21:23:47.000Z","date":"2018-01-25","kind":"sale","acquired":false,"shares":2000,"price":90,"value":180000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of November 29, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."}],"balance_after":70249,"source":{"system":"sec-edgar","filing":"0000937556-18-000008","document":"wf-form4_151700181256659.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755618000008/wf-form4_151700181256659.xml","form_type":"4"}},{"id":4228835,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-08-21T20:28:38.000Z","date":"2017-08-17","kind":"sale","acquired":false,"shares":11000,"price":87.25,"value":959750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The Reporting Person contributed shares of the Issuer's common stock to an exchange fund in exchange for shares of the exchange fund. The shares of the Issuer's common stock were valued at $87.25 per share, the NASDAQ closing price on August 17,2017, for the purpose of determining the number of shares of the exchange fund issuable to the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Reporting Person contributed shares of the Issuer's common stock to an exchange fund in exchange for shares of the exchange fund. The shares of the Issuer's common stock were valued at $87.25 per share, the NASDAQ closing price on August 17,2017, for the purpose of determining the number of shares of the exchange fund issuable to the Reporting Person."}],"balance_after":72249,"source":{"system":"sec-edgar","filing":"0000937556-17-000196","document":"wf-form4_150334730443859.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000196/wf-form4_150334730443859.xml","form_type":"4"}},{"id":4257932,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2017-07-13T20:32:48.000Z","date":"2017-07-13","kind":"exercise","acquired":false,"shares":6000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option was granted on October 27, 2011 and is exercisable as it vested. This option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date."}],"balance_after":0,"derivative":{"exercise_price":20.19,"exercise_date":"2012-10-27","expiration_date":"2021-10-27","underlying":"Common Stock","underlying_shares":6000},"source":{"system":"sec-edgar","filing":"0000937556-17-000177","document":"wf-form4_149997795355644.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000177/wf-form4_149997795355644.xml","form_type":"4"}},{"id":4257931,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-07-13T20:32:48.000Z","date":"2017-07-13","kind":"sale","acquired":false,"shares":6000,"price":91.8921,"value":551352.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 6, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $91.18 per share to a high of $92.60 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":83249,"source":{"system":"sec-edgar","filing":"0000937556-17-000177","document":"wf-form4_149997795355644.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000177/wf-form4_149997795355644.xml","form_type":"4"}},{"id":4257930,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-07-13T20:32:48.000Z","date":"2017-07-13","kind":"exercise","acquired":true,"shares":6000,"price":20.19,"value":121140.0,"ownership":{"direct":true},"balance_after":89249,"source":{"system":"sec-edgar","filing":"0000937556-17-000177","document":"wf-form4_149997795355644.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000177/wf-form4_149997795355644.xml","form_type":"4"}},{"id":4270539,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2017-06-29T23:20:06.000Z","date":"2017-06-29","kind":"exercise","acquired":false,"shares":7000,"price":20.19,"value":141330.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This option was granted on October 27, 2011 and is exercisable as it vested. This option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date."}],"balance_after":6000,"derivative":{"exercise_price":20.19,"exercise_date":"2012-10-27","expiration_date":"2021-10-27","underlying":"Common Stock","underlying_shares":7000},"source":{"system":"sec-edgar","filing":"0000937556-17-000157","document":"wf-form4_149877839220091.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000157/wf-form4_149877839220091.xml","form_type":"4"}},{"id":4270538,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2017-06-29T23:20:06.000Z","date":"2017-06-27","kind":"exercise","acquired":false,"shares":7000,"price":20.19,"value":141330.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This option was granted on October 27, 2011 and is exercisable as it vested. This option vests over a five year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date."}],"balance_after":14000,"derivative":{"exercise_price":20.19,"exercise_date":"2012-10-27","expiration_date":"2021-10-27","underlying":"Common Stock","underlying_shares":7000},"source":{"system":"sec-edgar","filing":"0000937556-17-000157","document":"wf-form4_149877839220091.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000157/wf-form4_149877839220091.xml","form_type":"4"}},{"id":4270537,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-29T23:20:06.000Z","date":"2017-06-29","kind":"sale","acquired":false,"shares":7000,"price":91.533,"value":640731.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 6, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $90.18 per share to a high of $93.87 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":83249,"source":{"system":"sec-edgar","filing":"0000937556-17-000157","document":"wf-form4_149877839220091.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000157/wf-form4_149877839220091.xml","form_type":"4"}},{"id":4270536,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-29T23:20:06.000Z","date":"2017-06-29","kind":"exercise","acquired":true,"shares":7000,"price":20.19,"value":141330.0,"ownership":{"direct":true},"balance_after":90249,"source":{"system":"sec-edgar","filing":"0000937556-17-000157","document":"wf-form4_149877839220091.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000157/wf-form4_149877839220091.xml","form_type":"4"}},{"id":4270535,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-29T23:20:06.000Z","date":"2017-06-27","kind":"sale","acquired":false,"shares":7000,"price":92.5808,"value":648065.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 6, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $92.15 per share to a high of $93.25 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":83249,"source":{"system":"sec-edgar","filing":"0000937556-17-000157","document":"wf-form4_149877839220091.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000157/wf-form4_149877839220091.xml","form_type":"4"}},{"id":4270534,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-29T23:20:06.000Z","date":"2017-06-27","kind":"exercise","acquired":true,"shares":7000,"price":20.19,"value":141330.0,"ownership":{"direct":true},"balance_after":90249,"source":{"system":"sec-edgar","filing":"0000937556-17-000157","document":"wf-form4_149877839220091.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000157/wf-form4_149877839220091.xml","form_type":"4"}},{"id":4271974,"issuer":{"id":7882,"kind":"organization","name":"IRIDEX CORP","symbol":"IRIX"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option Right to Buy","published_at":"2017-06-27T22:45:22.000Z","date":"2017-06-23","kind":"exercise","acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"This option was granted pursuant to IRIDEX Corporation's 2008 Equity Incentive Plan and is exempt to Rule 16b-3."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Shares subject to the option are fully vested and immediately exercisable."}],"balance_after":0,"derivative":{"exercise_price":3.9,"exercise_date":"2010-08-01","expiration_date":"2017-07-01","underlying":"Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001704739-17-000009","document":"edgar.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1006045/000170473917000009/edgar.xml","form_type":"4"}},{"id":4271973,"issuer":{"id":7882,"kind":"organization","name":"IRIDEX CORP","symbol":"IRIX"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-27T22:45:22.000Z","date":"2017-06-23","kind":"exercise","acquired":true,"shares":5000,"price":3.9,"value":19500.0,"ownership":{"direct":true},"balance_after":57197,"source":{"system":"sec-edgar","filing":"0001704739-17-000009","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1006045/000170473917000009/edgar.xml","form_type":"4"}},{"id":4281381,"issuer":{"id":7882,"kind":"organization","name":"IRIDEX CORP","symbol":"IRIX"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-15T23:19:30.000Z","date":"2017-06-14","kind":"grant","acquired":true,"shares":4301,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The restricted stock shall vest with respect to one hundred percent (100%) of the shares on June 14, 2018."}],"balance_after":52197,"source":{"system":"sec-edgar","filing":"0001704739-17-000006","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1006045/000170473917000006/edgar.xml","form_type":"4"}},{"id":4293965,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2017-06-05T20:14:13.000Z","date":"2017-06-01","kind":"grant","acquired":true,"shares":1583,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These RSUs were granted on June 1, 2017 and are exercisable as they vest. These RSUs vest on the earlier of the first anniversary of the grant date or the date of the next annual meeting of stockholders."}],"balance_after":1583,"derivative":{"expiration_date":"2027-06-01","underlying":"Common Stock","underlying_shares":1583},"source":{"system":"sec-edgar","filing":"0000937556-17-000126","document":"wf-form4_149669363738276.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000126/wf-form4_149669363738276.xml","form_type":"4"}},{"id":4348047,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Restricted Stock Units","published_at":"2017-04-21T20:36:49.000Z","date":"2017-04-20","kind":"exercise","acquired":false,"shares":3249,"price":97.39,"value":316420.11,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit (RSU) represents the contingent right to receive one share of common stock of the Issuer upon vesting of the RSU."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These RSUs were granted on April 20, 2016 and are exercisable as they vest. These RSUs vest on the earlier of the one-year anniversary of the date of grant or the date of the next annual meeting of stockholders."}],"balance_after":0,"derivative":{"exercise_price":0,"exercise_date":"2017-04-20","expiration_date":"2026-04-20","underlying":"Common Stock","underlying_shares":3249},"source":{"system":"sec-edgar","filing":"0000937556-17-000077","document":"wf-form4_149280699177227.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000077/wf-form4_149280699177227.xml","form_type":"4"}},{"id":4348046,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-04-21T20:36:49.000Z","date":"2017-04-20","kind":"exercise","acquired":true,"shares":3249,"price":97.39,"value":316420.11,"ownership":{"direct":true},"balance_after":83249,"source":{"system":"sec-edgar","filing":"0000937556-17-000077","document":"wf-form4_149280699177227.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000077/wf-form4_149280699177227.xml","form_type":"4"}},{"id":4372909,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-03-24T20:24:10.000Z","date":"2017-03-22","kind":"sale","acquired":false,"shares":3000,"price":93.2256,"value":279676.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of March 1, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $91.95 per share to a high of $93.82 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":80000,"source":{"system":"sec-edgar","filing":"0000937556-17-000063","document":"wf-form4_149038703387928.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000063/wf-form4_149038703387928.xml","form_type":"4"}},{"id":4380859,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-03-17T20:18:01.000Z","date":"2017-03-15","kind":"sale","acquired":false,"shares":3000,"price":95.758,"value":287274.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were exercised and sold pursuant to a Rule 10b5-1 Sales Plan dated as of March 1, 2017, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $95.22 per share to a high of $96.03 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":83000,"source":{"system":"sec-edgar","filing":"0000937556-17-000061","document":"wf-form4_148978186524108.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755617000061/wf-form4_148978186524108.xml","form_type":"4"}},{"id":4514523,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-12-21T21:59:13.000Z","date":"2016-12-19","kind":"gift","acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On December 19, 2016, the reporting person made a donation of 5,000 shares of Masimo Common Stock."}],"balance_after":86000,"source":{"system":"sec-edgar","filing":"0000937556-16-000436","document":"wf-form4_148235754077988.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755616000436/wf-form4_148235754077988.xml","form_type":"4"}},{"id":4572333,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Non-Qualified Stock Option (Right to Buy)","published_at":"2016-10-31T20:16:57.000Z","date":"2016-10-27","kind":"exercise","acquired":false,"shares":45000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option was granted on November 3, 2006 and was exercisable as it vested. This option vested over a five-year period, with 20% of the shares subject to the option vesting on each anniversary of the grant date."}],"balance_after":0,"derivative":{"exercise_price":12,"exercise_date":"2007-11-03","expiration_date":"2016-11-01","underlying":"Common Stock","underlying_shares":45000},"source":{"system":"sec-edgar","filing":"0000937556-16-000395","document":"wf-form4_147794500489432.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755616000395/wf-form4_147794500489432.xml","form_type":"4"}},{"id":4572332,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-10-31T20:16:57.000Z","date":"2016-10-27","kind":"exercise","acquired":true,"shares":45000,"price":12,"value":540000.0,"ownership":{"direct":true},"balance_after":91000,"source":{"system":"sec-edgar","filing":"0000937556-16-000395","document":"wf-form4_147794500489432.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755616000395/wf-form4_147794500489432.xml","form_type":"4"}},{"id":4576362,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-10-21T20:24:58.000Z","date":"2016-10-19","kind":"sale","acquired":false,"shares":2000,"price":59.0511,"value":118102.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 10, 2016, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $58.73 per share to a high of $59.29 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":46000,"source":{"system":"sec-edgar","filing":"0000937556-16-000387","document":"wf-form4_147708148538797.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755616000387/wf-form4_147708148538797.xml","form_type":"4"}},{"id":4582835,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-10-07T20:21:46.000Z","date":"2016-10-05","kind":"sale","acquired":false,"shares":2000,"price":59.5833,"value":119166.6,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 10, 2016, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $59.15 per share to a high of $59.81 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":48000,"source":{"system":"sec-edgar","filing":"0000937556-16-000378","document":"wf-form4_147587169364366.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755616000378/wf-form4_147587169364366.xml","form_type":"4"}},{"id":4596563,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-09-23T20:45:51.000Z","date":"2016-09-21","kind":"sale","acquired":false,"shares":2000,"price":59.4125,"value":118825.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 10, 2016, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $58.88 per share to a high of $59.85 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":50000,"source":{"system":"sec-edgar","filing":"0000937556-16-000364","document":"wf-form4_147466353873439.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755616000364/wf-form4_147466353873439.xml","form_type":"4"}},{"id":4608327,"issuer":{"id":39014,"kind":"organization","name":"MASIMO CORP","symbol":"MASI"},"owners":[{"id":148837,"kind":"person","name":"FITCH SANFORD","position":1,"cik":"0001198927","reported_name":"FITCH SANFORD","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-09-08T20:18:35.000Z","date":"2016-09-07","kind":"sale","acquired":false,"shares":2000,"price":59.8116,"value":119623.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1 Sales Plan dated as of June 10, 2016, which is intended to comply with Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The price reported in Column 4 represents the weighted average sale price per share. The actual sale prices ranged from a low of $59.62 per share to a high of $59.94 per share. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":52000,"source":{"system":"sec-edgar","filing":"0000937556-16-000355","document":"wf-form4_147336590240259.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/937556/000093755616000355/wf-form4_147336590240259.xml","form_type":"4"}}]}