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The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":50882,"source":{"system":"sec-edgar","filing":"0001093557-18-000148","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000148/edgardoc.xml","form_type":"4"}},{"id":3865621,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-07-18T21:50:20.000Z","date":"2018-07-16","kind":"sale","acquired":false,"shares":3900,"price":99.8708,"value":389496.12,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $99.64 to $100.08. The price above reflects the weighted average sale price. 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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":51382,"source":{"system":"sec-edgar","filing":"0001093557-18-000148","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000148/edgardoc.xml","form_type":"4"}},{"id":3865620,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-07-18T21:50:20.000Z","date":"2018-07-16","kind":"sale","acquired":false,"shares":5600,"price":99.2322,"value":555700.32,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $98.64 and $99.63.  The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":55282,"source":{"system":"sec-edgar","filing":"0001093557-18-000148","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000148/edgardoc.xml","form_type":"4"}},{"id":3889459,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-06-20T00:37:34.000Z","date":"2018-06-15","kind":"sale","acquired":false,"shares":10000,"price":97.8096,"value":978096.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $96.87 and $98.77.  The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":882,"source":{"system":"sec-edgar","filing":"0001093557-18-000125","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000125/edgardoc.xml","form_type":"4"}},{"id":3928946,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-05-17T22:49:22.000Z","date":"2018-05-15","kind":"sale","acquired":false,"shares":10000,"price":85.8974,"value":858974.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $85.49 and $86.65.  The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":882,"source":{"system":"sec-edgar","filing":"0001093557-18-000097","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000097/edgardoc.xml","form_type":"4"}},{"id":3961363,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-04-18T23:24:51.000Z","date":"2018-04-16","kind":"sale","acquired":false,"shares":10000,"price":73.0414,"value":730414.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $72.38 and $73.40. The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":882,"source":{"system":"sec-edgar","filing":"0001093557-18-000070","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000070/edgardoc.xml","form_type":"4"}},{"id":3990411,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-03-20T00:08:51.000Z","date":"2018-03-15","kind":"sale","acquired":false,"shares":10000,"price":65.5122,"value":655122.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $64.15 and $65.94. The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":10882,"source":{"system":"sec-edgar","filing":"0001093557-18-000066","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000066/edgardoc.xml","form_type":"4"}},{"id":3996846,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-03-15T01:02:00.000Z","date":"2018-03-12","kind":"disposition_to_issuer","acquired":false,"shares":9972,"price":60.7306,"value":605605.5432,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were sold to cover the Company's tax withholding obligation that accrued in connection with the vesting of restricted stock units previously granted."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 47,087 unvested restricted stock units which were granted on March 8, 2018 and shall vest through March 8, 2021."}],"balance_after":521674,"source":{"system":"sec-edgar","filing":"0001093557-18-000054","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000054/edgardoc.xml","form_type":"4"}},{"id":4001550,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-03-13T01:31:09.000Z","date":"2018-03-08","kind":"grant","acquired":true,"shares":47087,"price":0.001,"value":47.087,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a grant of restricted stock units that are exempt from Section 16 b-3 and are subject to vesting over a 36 month period from the date of grant as follows: 1/3 shall vest 12 months from the Grant Date, and the remaining balance shall vest in four equal installments over the following 24 months.  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 47,087 unvested restricted stock units which were granted on March 8, 2018 and shall vest through March 8, 2021."}],"balance_after":531646,"source":{"system":"sec-edgar","filing":"0001093557-18-000033","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000033/edgardoc.xml","form_type":"4"}},{"id":4048791,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-02-21T01:14:36.000Z","date":"2018-02-15","kind":"sale","acquired":false,"shares":10000,"price":55.9095,"value":559095.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $55.64 and $56.25. The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":20882,"source":{"system":"sec-edgar","filing":"0001093557-18-000009","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000009/edgardoc.xml","form_type":"4"}},{"id":4096893,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2018-01-19T01:21:04.000Z","date":"2018-01-16","kind":"sale","acquired":false,"shares":10000,"price":56.8588,"value":568588.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 5, 2017,  Mr. Gregg adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Gregg.   The shares set forth above were sold pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $56.44 and $57.36. The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":30882,"source":{"system":"sec-edgar","filing":"0001093557-18-000005","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000005/edgardoc.xml","form_type":"4"}},{"id":4303603,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Incentive Stock Option (right to buy)","published_at":"2017-05-26T20:24:27.000Z","date":"2017-05-24","kind":"exercise","acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":6.85,"exercise_date":"2008-06-19","expiration_date":"2017-06-19","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001093557-17-000131","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000131/edgardoc.xml","form_type":"4"}},{"id":4303602,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2017-05-26T20:24:27.000Z","date":"2017-05-24","kind":"exercise","acquired":true,"shares":30000,"price":6.85,"value":205500.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Included in this number are 30,877 unvested restricted stock units which were granted on March 8, 2017 and shall vest on March 8, 2018."}],"balance_after":484559,"source":{"system":"sec-edgar","filing":"0001093557-17-000131","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000131/edgardoc.xml","form_type":"4"}},{"id":4346900,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2017-04-24T22:13:02.000Z","date":"2017-04-20","kind":"sale","acquired":false,"shares":15000,"price":74.1,"value":1111500.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person contributed Dexcom, Inc. Common Stock to an exchange fund, pursuant to an agreement dated March 13, 2017 to contribute shares of DexCom, Inc. Common Stock in exchange for shares of the exchange fund. The Dexcom, Inc. 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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 30,877 unvested restricted stock units which were granted on March 8, 2017 and shall vest on March 8, 2018."}],"balance_after":470732,"source":{"system":"sec-edgar","filing":"0001093557-17-000063","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000063/edgardoc.xml","form_type":"4"}},{"id":4454681,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2017-02-14T00:18:01.000Z","date":"2017-02-09","kind":"disposition_to_issuer","acquired":false,"shares":1421,"price":79.35,"value":112756.35,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were sold to cover the Company's tax withholding obligation that accrued in connection with the vesting of restricted stock units previously granted."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 39,079 unvested restricted stock units, 34,000 of which were granted on March 8, 2016 and will vest on March 8, 2017 and 5,079 unvested restricted stock units granted on March 8, 2014 and shall vest on March 8, 2017."}],"balance_after":439845,"source":{"system":"sec-edgar","filing":"0001093557-17-000027","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000027/edgardoc.xml","form_type":"4"}},{"id":4493259,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2017-01-12T00:31:08.000Z","date":"2017-01-09","kind":"disposition_to_issuer","acquired":false,"shares":1511,"price":63.5,"value":95948.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"These shares were sold to cover the Company's tax withholding obligation that accrued in connection with the vesting of restricted stock units previously granted."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 44,157 unvested restricted stock units, 34,000 of which were granted on March 8, 2016 and will vest on March 8, 2017 and 10,157 unvested restricted stock units granted on March 8, 2014, 5,078 of which shall vest each month through March 8, 2017."}],"balance_after":441266,"source":{"system":"sec-edgar","filing":"0001093557-17-000005","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000005/edgardoc.xml","form_type":"4"}},{"id":4517395,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2016-12-19T22:46:29.000Z","date":"2016-12-15","kind":"gift","acquired":false,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This transaction represents a gift of securities made by the reporting person to a donor-advised fund.  This is not a market transaction, thus no price has been reported.  Transferor retains no beneficial or voting interest in the transferred shares."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":55882,"source":{"system":"sec-edgar","filing":"0001093557-16-000764","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355716000764/edgardoc.xml","form_type":"4"}},{"id":4525816,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common 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Company's tax withholding obligation that accrued in connection with the vesting of restricted stock units previously granted."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 54,313 unvested restricted stock units, 34,000 of which were granted on March 8, 2016 and will vest on March 8, 2017 and 20,313 unvested restricted stock units granted on March 8, 2014, 5,078 of which shall vest each month through March 8, 2017."}],"balance_after":444944,"source":{"system":"sec-edgar","filing":"0001093557-16-000750","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355716000750/edgardoc.xml","form_type":"4"}},{"id":4580859,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE 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to cover the Company's tax withholding obligation that accrued in connection with the vesting of restricted stock units previously granted."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 64,469 unvested restricted stock units, 34,000 of which were granted on March 8, 2016 and will vest on March 8, 2017 and 30,469 unvested restricted stock units granted on March 8, 2014, 5,078 of which shall vest each month through March 8, 2017."}],"balance_after":449283,"source":{"system":"sec-edgar","filing":"0001093557-16-000689","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355716000689/edgardoc.xml","form_type":"4"}},{"id":4606964,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE 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The price above reflects the weighted average sale price. 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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":65882,"source":{"system":"sec-edgar","filing":"0001093557-16-000676","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355716000676/edgardoc.xml","form_type":"4"}},{"id":4606963,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":164522,"kind":"person","name":"GREGG TERRANCE H","position":1,"cik":"0001236388","reported_name":"GREGG TERRANCE H","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Executive Chairman"}}],"security":"Common Stock","published_at":"2016-09-10T00:48:44.000Z","date":"2016-09-07","kind":"sale","acquired":false,"shares":5595,"price":95.0082,"value":531570.879,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This transaction was executed in multiple trades at prices ranging from $95.00 and $95.04. The price above reflects the weighted average sale price.  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 transactions were effected."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares are held by the Gregg Family Trust U/A/D 12/23/1998, with respect to which the reporting person is a trustee."}],"balance_after":71027,"source":{"system":"sec-edgar","filing":"0001093557-16-000676","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355716000676/edgardoc.xml","form_type":"4"}}]}