DXCM

SEC source: 0001093557-23-000245 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 54,700

F1 · shares: On May 30, 2023, Mr. Altman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Altman. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000242 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 56,700

F1 · shares: On May 30, 2023, Mr. Altman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Altman. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000240 · 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: 76,008

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 58,297 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, 8,208 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000238 · edgardoc.xml · nonDerivative · entry 3

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 58,394

F1 · shares: On December 15, 2022, Mr. Brown adopted a 10b5-1 Plan which was amended on August 29, 2023. 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.

F5 · price: This transaction was executed in multiple trades at prices ranging from $115.10 to $115.63. 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.

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: 0001093557-23-000238 · edgardoc.xml · nonDerivative · entry 2

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 59,564

F1 · shares: On December 15, 2022, Mr. Brown adopted a 10b5-1 Plan which was amended on August 29, 2023. 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.

F4 · price: This transaction was executed in multiple trades at prices ranging from $114.035 to $115.00. 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.

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: 0001093557-23-000238 · edgardoc.xml · nonDerivative · entry 1

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 61,106

F1 · shares: On December 15, 2022, Mr. Brown adopted a 10b5-1 Plan which was amended on August 29, 2023. 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.

F2 · price: This transaction was executed in multiple trades at prices ranging from $113.20 to $114.01. 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: 0001093557-23-000234 · 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: 124,775

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: 0001093557-23-000232 · 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: 76,400

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 58,297 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, 8,208 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000230 · 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: 77,576

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 58,297 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, 8,208 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000229 · edgardoc.xml · nonDerivative · entry 1

Regan Barry J. · CIK 0001746313 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,144

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 54,024 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, 8,208 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-23-000226 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 59,700

F1 · shares: On May 30, 2023, Mr. Altman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Altman. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000236 · edgardoc.xml · nonDerivative · entry 1

Naganathan Girish · CIK 0001949138 · EVP Chief Technology Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,725

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 42,363 unvested restricted stock units, 18,776 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 23,587 of which were granted on November 8, 2022 and shall vest through November 8, 2026.

SEC source: 0001093557-23-000224 · edgardoc.xml · nonDerivative · entry 1

Regan Barry J. · CIK 0001746313 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,250

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 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: 0001093557-23-000209 · 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: 125,186

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: 0001093557-23-000207 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 60,700

F1 · shares: On May 30, 2023, Mr. Altman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Altman. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000205 · 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: 125,597

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: 0001093557-23-000203 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 61,700

F1 · shares: On May 30, 2023, Mr. Altman adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Altman. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000201 · edgardoc.xml · nonDerivative · entry 1

Heller Bridgette P · CIK 0001485616 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,731

F1 · shares: On June 13, 2023, Ms. Heller adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Ms. Heller. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · balance_after: Included in this number are 2,911 unvested restricted stock units which were granted on May 18, 2023 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2024 Annual Meeting.

SEC source: 0001093557-23-000199 · 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: 48,453

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 22,685 unvested restricted stock units, 10,885 of which were granted on March 8, 2023 and shall all vest on 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: 0001093557-23-000197 · edgardoc.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

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. he 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 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: 0001093557-23-000195 · edgardoc.xml · nonDerivative · entry 1

Driscoll Rimma · CIK 0001952575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,008

F1 · shares: Represents a grant of restricted stock units subject to vest one-third per year on the anniversary of the date of grant. Share units represent a contingent right to receive one share of DexCom, Inc. common stock.

SEC source: 0001093557-23-000184 · 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: 126,008

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: 0001093557-23-000181 · edgardoc.xml · nonDerivative · entry 1

Sylvain Jereme M · CIK 0001681267 · EVP Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,867

F1 · shares: On August 22, 2022, Mr. Sylvain adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sylvain. 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 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: 0001093557-23-000178 · edgardoc.xml · nonDerivative · entry 2

Dahut Karen M · CIK 0001533450 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 12,260

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.

F2 · 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: 0001093557-23-000178 · edgardoc.xml · nonDerivative · entry 1

Dahut Karen M · CIK 0001533450 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,906

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.

SEC source: 0001093557-23-000176 · 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: 81,682

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: 0001093557-23-000167 · 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: 126,419

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: 0001093557-23-000165 · 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: 126,831

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: 0001093557-23-000163 · 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: 82,074

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: 0001093557-23-000162 · edgardoc.xml · nonDerivative · entry 1

Regan Barry J. · CIK 0001746313 · EVP Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 66,269

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 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: 0001093557-23-000159 · 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: 131,862

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: 0001093557-23-000154 · 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: 50,390

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: 0001093557-23-000152 · 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: 82,466

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: 0001093557-23-000147 · 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: 132,274

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: 0001093557-23-000146 · edgardoc.xml · nonDerivative · entry 1

Sylvain Jereme M · CIK 0001681267 · EVP Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,711

F1 · shares: On August 22, 2022, Mr. Sylvain adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by Mr. Sylvain. 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 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: 0001093557-23-000143 · edgardoc.xml · nonDerivative · entry 2

SKYLER JAY S · CIK 0001236386 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Partnership

Disclosed balance after: 63,348

F1 · shares: Shares were transferred from direct ownership to ownership under the Skyler Bach Family Limited Partnership, LLP, upon vesting of previously awarded restricted stock units.

F2 · balance_after: Shares are held by Skyler Bach Family Limited Partnership, LLP, with respect to which the reporting person is a managing partner of the partnership and maintains voting rights of these shares.

SEC source: 0001093557-23-000143 · edgardoc.xml · nonDerivative · entry 1

SKYLER JAY S · CIK 0001236386 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

F1 · shares: Shares were transferred from direct ownership to ownership under the Skyler Bach Family Limited Partnership, LLP, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-23-000142 · edgardoc.xml · nonDerivative · entry 3

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 62,700

F2 · shares: Shares were transferred from direct ownership to ownership under the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, upon vesting of previously awarded restricted stock units.

F3 · balance_after: Shares are held by the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000142 · edgardoc.xml · nonDerivative · entry 2

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,885

F2 · shares: Shares were transferred from direct ownership to ownership under the Steven R. and Lisa J. Altman, TTEE's Altman Family Trust DTD 8/21/92, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-23-000142 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,801

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: 0001093557-23-000141 · edgardoc.xml · nonDerivative · entry 3

AUGUSTINOS NICHOLAS · CIK 0001238485 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 38,016

F2 · shares: Shares were transferred from direct ownership to ownership under the Kirschner/Augustinos Revocable Trust, upon vesting of previously awarded restricted stock units.

F3 · balance_after: Shares are held by the Kirschner/Augustinos Revocable Trust, of which the reporting person is trustee.

SEC source: 0001093557-23-000141 · edgardoc.xml · nonDerivative · entry 2

AUGUSTINOS NICHOLAS · CIK 0001238485 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,043

F2 · shares: Shares were transferred from direct ownership to ownership under the Kirschner/Augustinos Revocable Trust, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-23-000141 · edgardoc.xml · nonDerivative · entry 1

AUGUSTINOS NICHOLAS · CIK 0001238485 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,019

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: 0001093557-23-000140 · edgardoc.xml · nonDerivative · entry 3

Collins Richard Alexander · CIK 0001700619 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 36,404

F2 · shares: Shares were transferred from direct ownership to ownership under the Richard A. Collins Revocable Trust upon vesting of previously awarded restricted stock units.

F3 · balance_after: Shares are held by the Richard A. Collins Revocable Trust, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000140 · edgardoc.xml · nonDerivative · entry 2

Collins Richard Alexander · CIK 0001700619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,906

F2 · shares: Shares were transferred from direct ownership to ownership under the Richard A. Collins Revocable Trust upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-23-000140 · edgardoc.xml · nonDerivative · entry 1

Collins Richard Alexander · CIK 0001700619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,854

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: 0001093557-23-000139 · edgardoc.xml · nonDerivative · entry 3

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 59,092

F2 · shares: Shares were transferred from direct ownership to ownership under the Mark G. and Mary E. Foletta, TTEE's for the Foletta Family Trust DTD 1/30/15, upon vesting of previously awarded restricted stock units.

F3 · balance_after: Shares are held by the Mark G. and Mary E. Foletta, TTEE's for the Foletta Family Trust DTD 1/30/15, with respect to which the reporting person is a trustee.

SEC source: 0001093557-23-000139 · edgardoc.xml · nonDerivative · entry 2

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,306

F2 · shares: Shares were transferred from direct ownership to ownership under the Mark G. and Mary E. Foletta, TTEE's for the Foletta Family Trust DTD 1/30/15, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-23-000139 · edgardoc.xml · nonDerivative · entry 1

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,794

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: 0001093557-23-000138 · edgardoc.xml · nonDerivative · entry 1

Heller Bridgette P · CIK 0001485616 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,331

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 2,911 unvested restricted stock units which were granted on May 18, 2023 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2024 Annual Meeting.