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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. 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This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"This transaction was executed in multiple trades at prices ranging from $451.96 to $452.94.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":3000,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399140,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":200,"price":451.285,"value":90257.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"This transaction was executed in multiple trades at prices ranging from $450.96 to $451.61.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":3400,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":14,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399139,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":200,"price":450.065,"value":90013.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"This transaction was executed in multiple trades at prices ranging from $449.61 to $450.52.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":3600,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399138,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":400,"price":448.975,"value":179590.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"This transaction was executed in multiple trades at prices ranging from $448.53 to $449.47.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":3800,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399137,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":200,"price":447.35,"value":89470.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"This transaction was executed in multiple trades at prices ranging from $447.06 to $447.64.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":4200,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399136,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":200,"price":445.845,"value":89169.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"his transaction was executed in multiple trades at prices ranging from $445.54 to $446.15.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":4400,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399135,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":400,"price":444.8,"value":177920.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"This transaction was executed in multiple trades at prices ranging from $444.35 to $445.05.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":4600,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399134,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":443,"price":443.562,"value":196497.966,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $442.93 to $443.89.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":5000,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399133,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":1147,"price":434.355,"value":498205.185,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $434.28 to $434.84.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":5443,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399132,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":476,"price":442.1825,"value":210478.87,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"his transaction was executed in multiple trades at prices ranging from $441.69 to $442.66. 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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":6590,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399131,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":200,"price":440.845,"value":88169.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $440.65 to $441.04.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":7066,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399130,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":100,"price":438.21,"value":43821.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":7266,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399129,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":100,"price":435.64,"value":43564.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":7366,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399128,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":100,"price":430.06,"value":43006.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  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The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":7466,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2399127,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-02-14T22:06:06.000Z","date":"2022-02-10","kind":"sale","acquired":false,"shares":100,"price":428.55,"value":42855.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 12, 2021, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 918 restricted stock units which were granted on May 21, 2021 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2022 Annual Meeting."}],"balance_after":7566,"source":{"system":"sec-edgar","filing":"0001093557-22-000016","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355722000016/edgardoc.xml","form_type":"4"}},{"id":2697517,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-05-25T23:56:15.000Z","date":"2021-05-20","kind":"other","acquired":true,"shares":787,"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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, upon vesting of previously awarded restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":7666,"source":{"system":"sec-edgar","filing":"0001093557-21-000145","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355721000145/edgardoc.xml","form_type":"4"}},{"id":2697516,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-05-25T23:56:15.000Z","date":"2021-05-21","kind":"grant","acquired":true,"shares":918,"price":0.001,"value":0.918,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU Award was granted on May 21, 2021 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 2022 Annual Meeting. Each share is represented by a restricted stock unit (RSU) that represents a contingent right to receive one share of DexCom, Inc. 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This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F14","text":"This transaction was executed in multiple trades at prices ranging from  $386.21 to $386.41.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":6879,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112315,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":1900,"price":385.3432,"value":732152.08,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"This transaction was executed in multiple trades at prices ranging from  $385.13 to $385.89.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":7079,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112314,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":500,"price":384.43,"value":192215.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"This transaction was executed in multiple trades at prices ranging from  $383.99 to $384.93.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":8979,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112313,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":400,"price":383.365,"value":153346.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"This transaction was executed in multiple trades at prices ranging from  $382.96 to $383.69.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":9479,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112312,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":300,"price":382.2533,"value":114675.99,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"This transaction was executed in multiple trades at prices ranging from  $381.80 to $382.57.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":9879,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112311,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":400,"price":381.0925,"value":152437.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"This transaction was executed in multiple trades at prices ranging from $380.77 to $381.50. 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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":10179,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112310,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":500,"price":380.006,"value":190003.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"This transaction was executed in multiple trades at prices ranging from  $379.72 to $380.44.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":10579,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112309,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":400,"price":378.865,"value":151546.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"This transaction was executed in multiple trades at prices ranging from  $378.61 to $379.21.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":11079,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112308,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":600,"price":377.61,"value":226566.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from  $377.14 to $378.04.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":11479,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112307,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":300,"price":376.17,"value":112851.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from  $375.86 to $376.73.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":12079,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112306,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":900,"price":375.1122,"value":337600.98,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from  $374.80 to $375.64.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":12379,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112305,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":500,"price":374.17,"value":187085.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from  $373.70 to $374.55.  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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":13279,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3112304,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-12T22:54:27.000Z","date":"2020-06-10","kind":"sale","acquired":false,"shares":100,"price":372.61,"value":37261.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 10, 2020, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":13779,"source":{"system":"sec-edgar","filing":"0001093557-20-000186","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000186/edgardoc.xml","form_type":"4"}},{"id":3134180,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-27T21:32:23.000Z","date":"2020-05-21","kind":"other","acquired":true,"shares":2613,"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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, upon vesting of previously awarded restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":13879,"source":{"system":"sec-edgar","filing":"0001093557-20-000161","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000161/edgardoc.xml","form_type":"4"}},{"id":3134179,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-27T21:32:23.000Z","date":"2020-05-22","kind":"grant","acquired":true,"shares":787,"price":0.001,"value":0.787,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU Award was granted on May 22, 2020 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 2021 Annual Meeting. 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":"Represents 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":"0001093557-20-000161","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000161/edgardoc.xml","form_type":"4"}},{"id":3134178,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-05-27T21:32:23.000Z","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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, upon vesting of previously awarded restricted stock units."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001093557-20-000161","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355720000161/edgardoc.xml","form_type":"4"}},{"id":3341343,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":100,"price":212.3,"value":21230.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":11266,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341342,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":500,"price":211.3859,"value":105692.95,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"This transaction was executed in multiple trades at prices ranging from  $211.12 to $211.90.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":11366,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341341,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":800,"price":210.5655,"value":168452.4,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"This transaction was executed in multiple trades at prices ranging from $209.83 to $210.81. 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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":11866,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341340,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":100,"price":208.54,"value":20854.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":12666,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341339,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":600,"price":207.6717,"value":124603.02,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"This transaction was executed in multiple trades at prices ranging from  $207.30 to $208.19.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":12766,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341338,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":600,"price":206.525,"value":123915.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"This transaction was executed in multiple trades at prices ranging from  $206.14 to $207.12.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":13366,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341337,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":1200,"price":205.6192,"value":246743.04,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from  $205.02 to $206.00.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":13966,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341336,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":1000,"price":204.231,"value":204231.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from  $203.87 to $204.81.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":15166,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341335,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":1801,"price":202.9933,"value":365590.9333,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from  $202.71 to $203.69.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":16166,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3341334,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-12-17T02:16:38.000Z","date":"2019-12-12","kind":"sale","acquired":false,"shares":2299,"price":202.2227,"value":464909.9873,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 13, 2019, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from  $201.68 to $202.63.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":17967,"source":{"system":"sec-edgar","filing":"0001093557-19-000258","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000258/edgardoc.xml","form_type":"4"}},{"id":3503137,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-04T23:59:32.000Z","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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, upon vesting of previously awarded restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":20266,"source":{"system":"sec-edgar","filing":"0001093557-19-000151","document":"wf-form4_155969275804718.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000151/wf-form4_155969275804718.xml","form_type":"4"}},{"id":3503136,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-04T23:59:32.000Z","date":"2019-05-31","kind":"grant","acquired":true,"shares":2613,"price":0.001,"value":2.613,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"The RSU Award was granted on May 31, 2019 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 2020 Annual Meeting. 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":"Represents 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":2613,"source":{"system":"sec-edgar","filing":"0001093557-19-000151","document":"wf-form4_155969275804718.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000151/wf-form4_155969275804718.xml","form_type":"4"}},{"id":3503135,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-06-04T23:59:32.000Z","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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, upon vesting of previously awarded restricted stock units."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001093557-19-000151","document":"wf-form4_155969275804718.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000151/wf-form4_155969275804718.xml","form_type":"4"}},{"id":3694830,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-01-16T23:08:26.000Z","date":"2019-01-14","kind":"sale","acquired":false,"shares":5343,"price":142.8326,"value":763154.5818,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"On December 12, 2018, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"This transaction was executed in multiple trades at prices ranging from  $142.51 to $143.34.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":16817,"source":{"system":"sec-edgar","filing":"0001093557-19-000012","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000012/edgardoc.xml","form_type":"4"}},{"id":3694829,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-01-16T23:08:26.000Z","date":"2019-01-14","kind":"sale","acquired":false,"shares":3558,"price":142.066,"value":505470.828,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"On December 12, 2018, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from  $141.51 to $142.48.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":22160,"source":{"system":"sec-edgar","filing":"0001093557-19-000012","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000012/edgardoc.xml","form_type":"4"}},{"id":3694828,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-01-16T23:08:26.000Z","date":"2019-01-14","kind":"sale","acquired":false,"shares":1730,"price":141.1569,"value":244201.437,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"On December 12, 2018, Ms. Kahn adopted a 10b5-1 Plan.  This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Kahn.   The exercise and sale of shares set forth above were pursuant to the 10b5-1 Plan."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from  $140.51 to $141.43.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":25718,"source":{"system":"sec-edgar","filing":"0001093557-19-000012","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000012/edgardoc.xml","form_type":"4"}},{"id":3694827,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-01-16T23:08:26.000Z","date":"2018-06-01","kind":"other","acquired":true,"shares":4353,"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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":27448,"source":{"system":"sec-edgar","filing":"0001093557-19-000012","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000012/edgardoc.xml","form_type":"4"}},{"id":3694826,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2019-01-16T23:08:26.000Z","date":"2018-06-01","kind":"other","acquired":false,"shares":4353,"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 Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 3,449 unvested 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":3449,"source":{"system":"sec-edgar","filing":"0001093557-19-000012","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355719000012/edgardoc.xml","form_type":"4"}},{"id":3883408,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-27T00:13:40.000Z","date":"2018-06-01","kind":"grant","acquired":true,"shares":3449,"price":0.001,"value":3.449,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The RSU Award was granted on June 1, 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. 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."}],"balance_after":3449,"source":{"system":"sec-edgar","filing":"0001093557-18-000137","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000137/edgardoc.xml","form_type":"4/A","original_submission_date":"2018-06-04"}},{"id":3909190,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-06-05T00:00:51.000Z","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":"Represents 7,810 unvested restricted stock units, 4,353 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":7810,"source":{"system":"sec-edgar","filing":"0001093557-18-000111","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355718000111/edgardoc.xml","form_type":"4"}},{"id":4157015,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-11-21T00:20:56.000Z","date":"2017-11-20","kind":"sale","acquired":false,"shares":3000,"price":54.5757,"value":163727.1,"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  $54.54 to $54.63.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":23095,"source":{"system":"sec-edgar","filing":"0001093557-17-000227","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000227/edgardoc.xml","form_type":"4"}},{"id":4293727,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-06-06T00:50:21.000Z","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."}],"balance_after":4353,"source":{"system":"sec-edgar","filing":"0001093557-17-000148","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000148/edgardoc.xml","form_type":"4"}},{"id":4382890,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2017-03-16T22:04:10.000Z","date":"2017-03-14","kind":"sale","acquired":false,"shares":3000,"price":77.36,"value":232080.0,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":21304,"source":{"system":"sec-edgar","filing":"0001093557-17-000085","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355717000085/edgardoc.xml","form_type":"4"}},{"id":4603465,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-09-15T00:44:49.000Z","date":"2016-09-12","kind":"sale","acquired":false,"shares":5000,"price":92.9023,"value":464511.5,"ownership":{"direct":false,"nature":"by Trust"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from  $92.90 to $92.95.  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":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Shares are held by the Barbara Kahn TTEE Barbara Kahn Rev TRT DTD 6/26/96 & Robert Meyer TTEE Robert Meyer Rev Trst DTD 6/26/96, with respect to which the reporting person is a trustee."}],"balance_after":24304,"source":{"system":"sec-edgar","filing":"0001093557-16-000702","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355716000702/edgardoc.xml","form_type":"4"}},{"id":4603464,"issuer":{"id":3114,"kind":"organization","name":"DEXCOM INC","symbol":"DXCM"},"owners":[{"id":90783,"kind":"person","name":"KAHN BARBARA","position":1,"cik":"0001520391","reported_name":"KAHN BARBARA","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2016-09-15T00:44:49.000Z","date":"2014-05-08","kind":"sale","acquired":false,"shares":7500,"price":30.1139,"value":225854.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Inadvertently filed late due to an administrative error."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Included in this number are 4,791 unvested restricted stock units which were granted on May 25, 2016 and shall vest on May 25, 2017."}],"balance_after":4791,"source":{"system":"sec-edgar","filing":"0001093557-16-000702","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1093557/000109355716000702/edgardoc.xml","form_type":"4"}}]}