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That award was subject to both performance-vesting and service-vesting requirements based on his status as Executive Vice President in charge of Commercial Operations.  Prior to the satisfaction of the applicable vesting requirements, the award was cancelled on the date reported in Column 3 in connection with his change to part-time employment as a senior advisor."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Represents shares of the Issuer's common stock that were subject to a performance share award made to the Reporting Person on November 6, 2013.  That award was subject to both performance-vesting and service-vesting requirements based on his status as Executive Vice President in charge of Commercial Operations.  Prior to the satisfaction of the applicable vesting requirements, the award was cancelled on the date reported in Column 3 in connection with his change to part-time employment as a senior advisor."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Represents shares of the Issuer's common stock that were subject to a performance share award made to the Reporting Person on November 6, 2013.  That award was subject to both performance-vesting and service-vesting requirements based on his status as Executive Vice President in charge of Commercial Operations.  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Such tranche of shares was subject to both performance-vesting and service-vesting requirements.  The performance vesting requirement was deemed satisfied on the date reported in Column 2 above upon certification of performance goal attainment by the Compensation Committee of the Issuer's Board of Directors.  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Such tranche of shares was subject to both performance-vesting and service-vesting requirements.  The performance vesting requirement was deemed satisfied on the date reported in Column 2 above upon certification of performance goal attainment by the Compensation Committee of the Issuer's Board of Directors.  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Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request"}],"balance_after":161840,"source":{"system":"sec-edgar","filing":"0001179110-13-017003","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013017003/edgar.xml","form_type":"4"}},{"id":472050,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Common Stock","published_at":"2013-11-25T20:25:54.000Z","date":"2013-11-22","kind":"sale","acquired":false,"shares":37000,"price":73.9039,"value":2734444.3,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Sale prices reported for the transactions reported here range from $73.35 to $74.33.  Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request."}],"balance_after":199840,"source":{"system":"sec-edgar","filing":"0001179110-13-017003","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013017003/edgar.xml","form_type":"4"}},{"id":472049,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Common Stock","published_at":"2013-11-25T20:25:54.000Z","date":"2013-11-22","kind":"exercise","acquired":true,"shares":75000,"price":16.395,"value":1229625.0,"ownership":{"direct":true},"balance_after":236840,"source":{"system":"sec-edgar","filing":"0001179110-13-017003","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013017003/edgar.xml","form_type":"4"}},{"id":473404,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Non-Qualified Stock Optin (right to buy)","published_at":"2013-10-25T21:09:52.000Z","date":"2013-10-23","kind":"exercise","acquired":false,"shares":75000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The exercise and sale transactions reported in this Form 4 are made pursuant to a Rule 10b5-1 trading plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The options have a five year vesting schedule. 20% vest on the first anniversary of the date of grant.  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Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request"}],"balance_after":161840,"source":{"system":"sec-edgar","filing":"0001179110-13-015757","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013015757/edgar.xml","form_type":"4"}},{"id":473402,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Common Stock","published_at":"2013-10-25T21:09:52.000Z","date":"2013-10-23","kind":"sale","acquired":false,"shares":72500,"price":68.5381,"value":4969012.25,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Sale prices reported for the transactions reported here range from $68.13 to $69.13.  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Full information regarding the number of shares purchased or sold at each separate price will be provided to the SEC, the issuer or its shareowners upon request."}],"balance_after":193225,"source":{"system":"sec-edgar","filing":"0001179110-13-014616","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013014616/edgar.xml","form_type":"4"}},{"id":474127,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Common Stock","published_at":"2013-09-25T22:21:14.000Z","date":"2013-09-23","kind":"exercise","acquired":true,"shares":12508,"price":8.005,"value":100126.54,"ownership":{"direct":true},"balance_after":261840,"source":{"system":"sec-edgar","filing":"0001179110-13-014616","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013014616/edgar.xml","form_type":"4"}},{"id":474126,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Common Stock","published_at":"2013-09-25T22:21:14.000Z","date":"2013-09-23","kind":"exercise","acquired":true,"shares":87492,"price":16.395,"value":1434431.34,"ownership":{"direct":true},"balance_after":249332,"source":{"system":"sec-edgar","filing":"0001179110-13-014616","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013014616/edgar.xml","form_type":"4"}},{"id":480345,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Common Stock","published_at":"2013-03-08T22:22:58.000Z","date":"2013-03-06","kind":"tax_withholding","acquired":false,"shares":15132,"price":45.4,"value":686992.8,"ownership":{"direct":true},"balance_after":161840,"source":{"system":"sec-edgar","filing":"0001179110-13-004726","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/882095/000117911013004726/edgar.xml","form_type":"4"}},{"id":480344,"issuer":{"id":405,"kind":"organization","name":"GILEAD SCIENCES, INC.","symbol":"GILD"},"owners":[{"id":16122,"kind":"person","name":"YOUNG KEVIN","position":1,"cik":"0001303643","reported_name":"YOUNG KEVIN","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"EVP, Commercial Operations"}}],"security":"Common Stock","published_at":"2013-03-08T22:22:58.000Z","date":"2013-03-06","kind":"grant","acquired":true,"shares":29000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Vesting of performance share awards on March 6, 2013"},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Amount of securities beneficially owned following the reported transaction includes 968 shares acquired under the Gilead Sciences, Inc. 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