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Collins Revocable Trust upon vesting of previously awarded restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Shares are held by the Richard A. Collins Revocable Trust, with respect to which the reporting person is a trustee."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares are held by the Richard A. 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Each share is represented by a restricted stock unit (RSU) that represents a contingent right to receive one share of DexCom, Inc. Common Stock upon settlement."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Included in this number are 787 restricted stock units which were granted on May 22, 2020 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2021 Annual Meeting."}],"balance_after":787,"source":{"system":"sec-edgar","filing":"0001093557-20-000166","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000166/edgardoc.xml","form_type":"4"}},{"id":3134190,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":42919,"kind":"person","name":"Collins Richard Alexander","position":1,"cik":"0001700619","reported_name":"Collins Richard Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-27T21:38:22.000Z","date":"2020-05-21","kind":"other","acquired":false,"shares":2613,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares were transferred from direct ownership to ownership under the Richard A. 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This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Collins.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Reflects 500 shares inadvertently reported under Direct Ownership."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Richard A. Collins Revocable Trust, with respect to which the reporting person is a trustee."}],"balance_after":5304,"source":{"system":"sec-edgar","filing":"0001093557-20-000035","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000035/edgardoc.xml","form_type":"4"}},{"id":3503141,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":42919,"kind":"person","name":"Collins Richard Alexander","position":1,"cik":"0001700619","reported_name":"Collins Richard Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-05T00:01:38.000Z","date":"2019-05-30","kind":"other","acquired":true,"shares":3449,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares were transferred from direct ownership to ownership under the Richard A. Collins Revocable Trust upon vesting of previously awarded restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Shares are held by the Richard A. Collins Revocable Trust, with respect to which the reporting person is a trustee."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares are held by the Richard A. 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Each share is represented by a restricted stock unit (RSU) that represents a contingent right to receive one share of DexCom, Inc. Common Stock upon settlement."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Included in this number are 2,613 restricted stock units which were granted on May 31, 2019 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2020 Annual Meeting."}],"balance_after":3113,"source":{"system":"sec-edgar","filing":"0001093557-19-000152","document":"wf-form4_155969288108911.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000152/wf-form4_155969288108911.xml","form_type":"4"}},{"id":3503139,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":42919,"kind":"person","name":"Collins Richard Alexander","position":1,"cik":"0001700619","reported_name":"Collins Richard Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-05T00:01:38.000Z","date":"2019-05-30","kind":"other","acquired":false,"shares":3449,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares were transferred from direct ownership to ownership under the Richard A. 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Each share is represented by a restricted stock unit (RSU) that represents a contingent right to receive one share of DexCom, Inc. commom stock upon settlement."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 3,449 restricted stock units which were granted on June 1, 2018 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2019 Annual Meeting."}],"balance_after":9304,"source":{"system":"sec-edgar","filing":"0001093557-18-000136","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000136/edgardoc.xml","form_type":"4/A","original_submission_date":"2018-06-04"}},{"id":3909196,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":42919,"kind":"person","name":"Collins Richard Alexander","position":1,"cik":"0001700619","reported_name":"Collins Richard Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-05T00:03:23.000Z","date":"2018-05-31","kind":"grant","acquired":true,"shares":3457,"price":0.001,"value":3.457,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Each share is represented by a restricted stock unit (RSU) that represents a contingent right to receive one share of DexCom, Inc. commom stock upon settlement."},{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU Award was granted on May 31, 2018 and 100% of the RSU will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2019 Annual Meeting."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Included in this number are 8,812 restricted stock units, 5,355 of which were granted on June 1, 2017 and shall vest on June 1, 2018 and 3,457 of which were granted on May 31, 2018 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2019 Annual Meeting."}],"balance_after":9312,"source":{"system":"sec-edgar","filing":"0001093557-18-000117","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000117/edgardoc.xml","form_type":"4"}},{"id":4293724,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":42919,"kind":"person","name":"Collins Richard Alexander","position":1,"cik":"0001700619","reported_name":"Collins Richard Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-06T00:48:11.000Z","date":"2017-06-01","kind":"grant","acquired":true,"shares":4353,"price":0.001,"value":4.353,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Share units are restricted and subject to vesting in one annual installment from the date of grant. Share units represent a contingent right to receive one share of DexCom, Inc. common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 5,355 unvested restricted stock units which were granted on June 1, 2017 and shall vest on June 1, 2018."}],"balance_after":5855,"source":{"system":"sec-edgar","filing":"0001093557-17-000145","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000145/edgardoc.xml","form_type":"4"}},{"id":4293723,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":42919,"kind":"person","name":"Collins Richard Alexander","position":1,"cik":"0001700619","reported_name":"Collins Richard Alexander","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-06T00:48:11.000Z","date":"2017-06-01","kind":"grant","acquired":true,"shares":1002,"price":0.001,"value":1.002,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Share units are restricted and subject to vesting in one annual installment from the date of grant. Share units represent a contingent right to receive one share of DexCom, Inc. common stock."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 5,355 unvested restricted stock units which were granted on June 1, 2017 and shall vest on June 1, 2018."}],"balance_after":1502,"source":{"system":"sec-edgar","filing":"0001093557-17-000145","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000145/edgardoc.xml","form_type":"4"}}]}