DXCM

SEC source: 0001093557-23-000137 · edgardoc.xml · nonDerivative · entry 3

KAHN BARBARA · CIK 0001520391 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 19,648

F2 · shares: 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.

F3 · balance_after: 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.

SEC source: 0001093557-23-000137 · edgardoc.xml · nonDerivative · entry 2

KAHN BARBARA · CIK 0001520391 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,927

F2 · shares: 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.

SEC source: 0001093557-23-000137 · edgardoc.xml · nonDerivative · entry 1

KAHN BARBARA · CIK 0001520391 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,903

F1 · shares: The RSU Award was granted on May 18, 2023 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 2024 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.

SEC source: 0001093557-23-000136 · edgardoc.xml · nonDerivative · entry 1

Malady Kyle · CIK 0001760581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,529

F1 · shares: The RSU Award was granted on May 18, 2023 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 2024 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.

F2 · balance_after: Included in this number are 4,581 unvested restricted stock units, 2,885 of which were granted on May 18, 2023 and shall vest on the earlier of the one year anniversary of the grant or the date of DexCom Inc's 2024 Annual Meeting and 1,696 of which were granted on October 11, 2020 and shall vest through October 11, 2023.

SEC source: 0001093557-23-000135 · edgardoc.xml · nonDerivative · entry 3

TOPOL ERIC · CIK 0001468345 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Family Holdings

Disclosed balance after: 375,016

F2 · shares: Shares were transferred from direct ownership to ownership under the Topol Family Holdings, LLC, upon vesting of previously awarded restricted stock units.

F3 · balance_after: Shares are held by Topol Family Holdings, LLC, with respect to which the reporting person is a manager and maintains voting rights of these shares.

SEC source: 0001093557-23-000135 · edgardoc.xml · nonDerivative · entry 2

TOPOL ERIC · CIK 0001468345 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,911

F2 · shares: Shares were transferred from direct ownership to ownership under the Topol Family Holdings, LLC, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-23-000135 · edgardoc.xml · nonDerivative · entry 1

TOPOL ERIC · CIK 0001468345 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,863

F1 · shares: The RSU Award was granted on May 18, 2023 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 2024 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.

SEC source: 0001093557-23-000134 · edgardoc.xml · nonDerivative · entry 5

Dahut Karen M · CIK 0001533450 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 10,716

F1 · shares: Shares were transferred from direct ownership to ownership under the WILLIAM L DAHUT, JR TRUST & KAREN M DAHUT TRUST Dated 6/14/2005, upon vesting of previously awarded restricted stock units.

F4 · balance_after: Shares are held by the WILLIAM L DAHUT, JR TRUST & KAREN M DAHUT TRUST Dated 6/14/2005, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000134 · edgardoc.xml · nonDerivative · entry 3

Dahut Karen M · CIK 0001533450 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,450

F1 · shares: Shares were transferred from direct ownership to ownership under the WILLIAM L DAHUT, JR TRUST & KAREN M DAHUT TRUST Dated 6/14/2005, upon vesting of previously awarded restricted stock units.

F3 · balance_after: Included in this number are 4,450 unvested restricted stock units, 2,906 of which were granted on May 18, 2023 and shall vest on the earlier of the one year anniversary of the grant or the date of DexCom Inc's 2024 Annual Meeting and 1,544 of which were granted on August 11, 2020 and shall vest through August 11, 2023.

SEC source: 0001093557-23-000134 · edgardoc.xml · nonDerivative · entry 2

Dahut Karen M · CIK 0001533450 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,398

F2 · shares: The RSU Award was granted on May 18, 2023 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 2024 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.

SEC source: 0001093557-23-000122 · edgardoc.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP Chief Human Resources Offi

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,859

F1 · shares: On December 14, 2022, Ms. Stern adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Stern. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 66,505 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000120 · edgardoc.xml · nonDerivative · entry 1

Pacelli Steven Robert · CIK 0001359098 · EVP Managing Director Dexcom V

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 132,686

F1 · shares: On September 15, 2022, Mr. Pacelli adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Pacelli. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 39,132 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000114 · edgardoc.xml · nonDerivative · entry 1

Pacelli Steven Robert · CIK 0001359098 · EVP Managing Director Dexcom V

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,717

F1 · shares: On September 15, 2022, Mr. Pacelli adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Pacelli. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 39,132 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000110 · edgardoc.xml · nonDerivative · entry 1

Leach Jacob Steven · CIK 0001700255 · EVP Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 259,613

F1 · shares: On December 5, 2022, Mr. Leach adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Leach. The shares set forth above were sold pursuant to the 10b5-1 Plan. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 64,633 unvested restricted stock units, 25,397 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 17,976 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 9,560 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000109 · edgardoc.xml · nonDerivative · entry 1

Regan Barry J. · CIK 0001746313 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,258

F1 · shares: On November 1, 2022, Mr. Regan adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Regan. The shares set forth above were sold pursuant to the 10b5-1 Plan. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 62,232 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000108 · edgardoc.xml · nonDerivative · entry 1

Selvaraj Shelly Ramasamy · CIK 0001805707 · SVP Chief Information Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,505

F1 · shares: On November 29, 2022, Mr. Selvaraj adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Selvaraj. The shares set forth above were sold pursuant to the 10b5-1 Plan. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 26,736 unvested restricted stock units, 10,885 of which were granted on March 8, 2023 and shall all vest on March 8, 2026, 4,051 of which were granted on September 8, 2022 and shall all vest on September 8, 2023, 7,704 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 4,096 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000104 · edgardoc.xml · nonDerivative · entry 1

Flynn Paul R · CIK 0001850141 · EVP Global Revenue

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,112

F1 · shares: On September 9, 2022, Mr. Flynn adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Flynn. The shares set forth above were sold pursuant to the 10b5-1 Plan. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 52,112 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000102 · edgardoc.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP Chief Human Resources Offi

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,252

F1 · shares: On December 14, 2022, Ms. Stern adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Stern. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · balance_after: Included in this number are 66,505 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000096 · edgardoc.xml · nonDerivative · entry 3

SAYER KEVIN R · CIK 0001286858 · Director · President CEO and Chairman of

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 327,457

F1 · shares: On November 1, 2022, Mr. Sayer adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sayer. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F5 · price: This transaction was executed in multiple trades at prices ranging from $115.435 to $116.03. 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.

F3 · balance_after: Included in this number are 115,682 unvested restricted stock units, 54,422 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 43,336 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 17,924 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000096 · edgardoc.xml · nonDerivative · entry 2

SAYER KEVIN R · CIK 0001286858 · Director · President CEO and Chairman of

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 331,056

F1 · shares: On November 1, 2022, Mr. Sayer adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sayer. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F4 · price: This transaction was executed in multiple trades at prices ranging from $114.065 to $115.02. 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.

F3 · balance_after: Included in this number are 115,682 unvested restricted stock units, 54,422 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 43,336 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 17,924 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000096 · edgardoc.xml · nonDerivative · entry 1

SAYER KEVIN R · CIK 0001286858 · Director · President CEO and Chairman of

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 342,274

F1 · shares: On November 1, 2022, Mr. Sayer adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sayer. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · price: This transaction was executed in multiple trades at prices ranging from $113.33 to $114.04. 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.

F3 · balance_after: Included in this number are 115,682 unvested restricted stock units, 54,422 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 43,336 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 17,924 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000095 · edgardoc.xml · nonDerivative · entry 3

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,870

F1 · shares: On December 15, 2022, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F3 · balance_after: Included in this number are 57,885 unvested restricted stock units. 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 36,116 of which were granted on March 8, 2022 and shall vest through March 8, 2026.

SEC source: 0001093557-23-000095 · edgardoc.xml · nonDerivative · entry 2

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,123

F1 · shares: On December 15, 2022, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F4 · price: This transaction was executed in multiple trades at prices ranging from $114.70 to $115.45. 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.

F3 · balance_after: Included in this number are 57,885 unvested restricted stock units. 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 36,116 of which were granted on March 8, 2022 and shall vest through March 8, 2026.

SEC source: 0001093557-23-000095 · edgardoc.xml · nonDerivative · entry 1

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,073

F1 · shares: On December 15, 2022, Mr. Brown adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Brown. The shares set forth above were sold pursuant to the 10b5-1 Plan that was intended to comply with prior version of Rule 10b5-1 promulgated under the Securities Exchange Act of 1934, as amended.

F2 · price: This transaction was executed in multiple trades at prices ranging from $113.63 to $114.61. 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.

F3 · balance_after: Included in this number are 57,885 unvested restricted stock units. 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 36,116 of which were granted on March 8, 2022 and shall vest through March 8, 2026.

SEC source: 0001093557-23-000091 · edgardoc.xml · nonDerivative · entry 1

Pacelli Steven Robert · CIK 0001359098 · EVP Managing Director Dexcom V

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,129

F1 · shares: On September 15, 2022, Mr. Pacelli adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Pacelli. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Included in this number are 39,132 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000089 · edgardoc.xml · nonDerivative · entry 1

Dolan Matthew Vincent · CIK 0001914994 · SVP Corporate Strategy-Develop

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,569

F1 · shares: On December 15, 2021, Mr. Dolan adopted a 10b5-1 Plan which was amended on December 6, 2022. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Dolan. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Included in this number are 33,569 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,704 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 4,096 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000087 · edgardoc.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP Chief Human Resources Offi

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,645

F1 · shares: On December 14, 2022, Ms. Stern adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Stern. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Included in this number are 66,505 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000081 · edgardoc.xml · nonDerivative · entry 3

Regan Barry J. · CIK 0001746313 · EVP Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 70,472

F3 · shares: On November 1, 2022, Mr. Regan adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Regan. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Included in this number are 62,232 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000078 · edgardoc.xml · nonDerivative · entry 4

Flynn Paul R · CIK 0001850141 · EVP Global Revenue

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,893

F3 · shares: On September 9, 2022, Mr. Flynn adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Flynn. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Included in this number are 52,112 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000077 · edgardoc.xml · nonDerivative · entry 5

Dolan Matthew Vincent · CIK 0001914994 · SVP Corporate Strategy-Develop

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,872

F3 · shares: On December 15, 2021, Mr. Dolan adopted a 10b5-1 Plan which was amended on December 6, 2022. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Dolan. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Included in this number are 33,569 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,704 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 4,096 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000085 · edgardoc.xml · nonDerivative · entry 4

Sylvain Jereme M · CIK 0001681267 · EVP Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,111

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 54,661 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000085 · edgardoc.xml · nonDerivative · entry 3

Sylvain Jereme M · CIK 0001681267 · EVP Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,894

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 54,661 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000085 · edgardoc.xml · nonDerivative · entry 2

Sylvain Jereme M · CIK 0001681267 · EVP Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,751

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 54,661 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000085 · edgardoc.xml · nonDerivative · entry 1

Sylvain Jereme M · CIK 0001681267 · EVP Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 83,355

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 54,661 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000084 · edgardoc.xml · nonDerivative · entry 2

Stern Sadie · CIK 0001797971 · EVP Chief Human Resources Offi

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,038

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 66,505 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000084 · edgardoc.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP Chief Human Resources Offi

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,603

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 66,505 unvested restricted stock units, 21,769 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000083 · edgardoc.xml · nonDerivative · entry 3

Selvaraj Shelly Ramasamy · CIK 0001805707 · SVP Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,512

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 26,736 unvested restricted stock units, 10,885 of which were granted on March 8, 2023 and shall all vest on March 8, 2026, 4,051 of which were granted on September 8, 2022 and shall all vest on September 8, 2023, 7,704 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 4,096 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000083 · edgardoc.xml · nonDerivative · entry 2

Selvaraj Shelly Ramasamy · CIK 0001805707 · SVP Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,158

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 26,736 unvested restricted stock units, 10,885 of which were granted on March 8, 2023 and shall all vest on March 8, 2026, 4,051 of which were granted on September 8, 2022 and shall all vest on September 8, 2023, 7,704 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 4,096 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000083 · edgardoc.xml · nonDerivative · entry 1

Selvaraj Shelly Ramasamy · CIK 0001805707 · SVP Chief Information Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,895

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 26,736 unvested restricted stock units, 10,885 of which were granted on March 8, 2023 and shall all vest on March 8, 2026, 4,051 of which were granted on September 8, 2022 and shall all vest on September 8, 2023, 7,704 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 4,096 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000082 · edgardoc.xml · nonDerivative · entry 3

SAYER KEVIN R · CIK 0001286858 · Director · President CEO and Chairman of

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 348,269

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 115,682 unvested restricted stock units, 54,422 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 43,336 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 17,924 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000082 · edgardoc.xml · nonDerivative · entry 2

SAYER KEVIN R · CIK 0001286858 · Director · President CEO and Chairman of

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 359,316

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 115,682 unvested restricted stock units, 54,422 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 43,336 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 17,924 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000082 · edgardoc.xml · nonDerivative · entry 1

SAYER KEVIN R · CIK 0001286858 · Director · President CEO and Chairman of

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 368,457

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 115,682 unvested restricted stock units, 54,422 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 43,336 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 17,924 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000081 · edgardoc.xml · nonDerivative · entry 2

Regan Barry J. · CIK 0001746313 · EVP Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,482

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 62,232 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000081 · edgardoc.xml · nonDerivative · entry 1

Regan Barry J. · CIK 0001746313 · EVP Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,756

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 62,232 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 6,684 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024, 16,416 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000080 · edgardoc.xml · nonDerivative · entry 3

Pacelli Steven Robert · CIK 0001359098 · EVP Managing Director Dexcom V

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 143,571

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 39,132 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000080 · edgardoc.xml · nonDerivative · entry 2

Pacelli Steven Robert · CIK 0001359098 · EVP Managing Director Dexcom V

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 145,976

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 39,132 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000080 · edgardoc.xml · nonDerivative · entry 1

Pacelli Steven Robert · CIK 0001359098 · EVP Managing Director Dexcom V

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 151,966

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 39,132 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 13,288 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 7,068 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000078 · edgardoc.xml · nonDerivative · entry 3

Flynn Paul R · CIK 0001850141 · EVP Global Revenue

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 57,675

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 52,112 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000078 · edgardoc.xml · nonDerivative · entry 2

Flynn Paul R · CIK 0001850141 · EVP Global Revenue

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 63,318

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 52,112 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024.

SEC source: 0001093557-23-000078 · edgardoc.xml · nonDerivative · entry 1

Flynn Paul R · CIK 0001850141 · EVP Global Revenue

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,042

F1 · shares: Represents the number of shares required to be sold by the reporting person to cover tax withholding obligations in connection with the vesting of RSUs. This sale is mandated by the Issuer's election under its equity incentive plans to require the satisfaction of tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the reporting person.

F2 · balance_after: Included in this number are 52,112 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 14,124 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 11,700 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 7,512 of which were granted on March 8, 2021 and shall vest through March 8, 2024.