DXCM

SEC source: 0001093557-25-000016 · wk-form4_1738280640.xml · nonDerivative · entry 1

Leach Jacob Steven · CIK 0001700255 · EVP, Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 271,278

F1 · kind: Represents performance stock units ("PSUs") granted to the reporting person on March 8, 2022 that vested on January 28, 2025.

F1 · shares: Represents performance stock units ("PSUs") granted to the reporting person on March 8, 2022 that vested on January 28, 2025.

F2 · balance_after: Included in this number are 51,972 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 16,931 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 8,988 of which were granted on March 8, 2022 and shall vest through March 8, 2025.

SEC source: 0001093557-25-000015 · wk-form4_1738280630.xml · nonDerivative · entry 1

SAYER KEVIN R · CIK 0001286858 · Director · Chairman, CEO & President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 352,396

F1 · kind: Represents performance stock units ("PSUs") granted to the reporting person on March 8, 2022 that vested on January 28, 2025.

F1 · shares: Represents performance stock units ("PSUs") granted to the reporting person on March 8, 2022 that vested on January 28, 2025.

F2 · balance_after: Included in this number are 109,641 unvested restricted stock units, 51,692 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 36,281 of which were granted on March 9, 2023 and shall vest through March 8, 2026, and 21,668 of which were granted on March 8, 2022 and shall vest through March 8, 2025.

SEC source: 0001093557-24-000192 · wk-form4_1734470143.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,768

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 43,283 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025.

SEC source: 0001093557-24-000191 · wk-form4_1734470133.xml · nonDerivative · entry 1

Sylvain Jereme M · CIK 0001681267 · EVP, Chief Financal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,030

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 47,625 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025.

SEC source: 0001093557-24-000190 · wk-form4_1734470124.xml · nonDerivative · entry 1

Leach Jacob Steven · CIK 0001700255 · EVP, Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 264,171

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 51,972 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 16,931 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 8,988 of which were granted on March 8, 2022 and shall vest through March 8, 2025.

SEC source: 0001093557-24-000189 · wk-form4_1734470113.xml · nonDerivative · entry 1

Heller Bridgette P · CIK 0001485616 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 23,349

F1 · shares: On February 25, 2024, 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 2,618 unvested restricted stock units which were granted on May 22, 2024 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2025 Annual Meeting of Stockholders.

SEC source: 0001093557-24-000184 · wk-form4_1732310139.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,192

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 44,115 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025, and 832 of which were granted on December 15, 2021 and shall vest through December 15, 2024.

SEC source: 0001093557-24-000182 · wk-form4_1731964314.xml · nonDerivative · entry 1

Sylvain Jereme M · CIK 0001681267 · EVP, Chief Financal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 80,774

F1 · shares: On November 21, 2023, Mr. Sylvain adopted a 10b5-1 Plan which was amended on August 6, 2024. 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.

F2 · balance_after: Included in this number are 49,085 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025, and 1,460 of which were granted on December 15, 2021 and shall vest through December 15, 2024.

SEC source: 0001093557-24-000172 · wk-form4_1726604238.xml · nonDerivative · entry 1

Heller Bridgette P · CIK 0001485616 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 24,349

F1 · shares: On February 25, 2024, 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 2,618 unvested restricted stock units which were granted on May 22, 2024 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2025 Annual Meeting of Stockholders.

SEC source: 0001093557-24-000169 · wk-form4_1726095915.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP, Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,451

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 52,323 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 832 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 8,208 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-24-000167 · wk-form4_1726095894.xml · nonDerivative · entry 1

Leach Jacob Steven · CIK 0001700255 · EVP, Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 264,915

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 53,432 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 16,931 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 8,988 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 1,460 of which were granted on December 15, 2021 and shall vest through December 15, 2024, and 84 shares acquired under the Issuer's 2015 Employee Stock Purchase Plan on August 30, 2024.

SEC source: 0001093557-24-000168 · wk-form4_1726095904.xml · nonDerivative · entry 1

Sylvain Jereme M · CIK 0001681267 · EVP, Chief Financal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,274

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 49,085 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 1,460 of which were granted on December 15, 2021 and shall vest through December 15, 2024, and 72 shares acquired under the Issuer's 2015 Employee Stock Purchase Plan on August 30, 2024.

SEC source: 0001093557-24-000150 · wk-form4_1725394928.xml · nonDerivative · entry 1

Brown Michael Jon · CIK 0001899922 · EVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 65,636

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 · balance_after: Included in this number are 60,303 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 24,080 of which were granted on March 8, 2022 and shall vest through March 8, 2026, and 73 shares acquired under the issuers 2015 Employee Stock Purchase Plan on August 30, 2024.

SEC source: 0001093557-24-000147 · wk-form4_1722554576.xml · nonDerivative · entry 1

Brown Michael Jon · CIK 0001899922 · EVP, Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 66,249

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 · balance_after: Included in this number are 60,303 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 24,080 of which were granted on March 8, 2022 and shall vest through March 8, 2026.

SEC source: 0001093557-24-000135 · edgardoc.xml · nonDerivative · entry 1

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 66,901

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 · balance_after: Included in this number are 60,303 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 24,080 of which were granted on March 8, 2022 and shall vest through March 8, 2026.

SEC source: 0001093557-24-000133 · edgardoc.xml · nonDerivative · entry 5

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 56,398

F1 · shares: On March 15, 2024, the Foletta Family Trust DTD 1/30/15 (the ?Trust?) adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F6 · price: This transaction was executed in multiple trades at prices ranging from $117.235 to $117.26. 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.

F2 · 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: 0001093557-24-000133 · edgardoc.xml · nonDerivative · entry 4

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 56,697

F1 · shares: On March 15, 2024, the Foletta Family Trust DTD 1/30/15 (the ?Trust?) adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. 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 $116.265 to $117.195. 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.

F2 · 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: 0001093557-24-000133 · edgardoc.xml · nonDerivative · entry 3

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 59,704

F1 · shares: On March 15, 2024, the Foletta Family Trust DTD 1/30/15 (the ?Trust?) adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. 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 $117.61 to $117.83. 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.

F2 · 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: 0001093557-24-000133 · edgardoc.xml · nonDerivative · entry 2

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 60,179

F1 · shares: On March 15, 2024, the Foletta Family Trust DTD 1/30/15 (the ?Trust?) adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F3 · price: This transaction was executed in multiple trades at prices ranging from $116.76 to $117.60. 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.

F2 · 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: 0001093557-24-000133 · edgardoc.xml · nonDerivative · entry 1

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: Plan reported

Ownership: Indirect · by Trust

Disclosed balance after: 62,391

F1 · shares: On March 15, 2024, the Foletta Family Trust DTD 1/30/15 (the ?Trust?) adopted a 10b5-1 Plan. This 10b5-1 Plan allows the orderly disposition of shares owned by the Trust. The shares set forth above were sold pursuant to the 10b5-1 Plan.

F2 · 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: 0001093557-24-000131 · edgardoc.xml · nonDerivative · entry 1

Heller Bridgette P · CIK 0001485616 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 25,349

F1 · shares: On February 25, 2024, 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 2,618 unvested restricted stock units which were granted on May 22, 2024 and will vest on the earlier of the one year anniversary of the grant date or the date of DexCom Inc's 2025 Annual Meeting.

SEC source: 0001093557-24-000129 · 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: 84,948

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 50,549 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 2,924 of which were granted on December 15, 2021 and shall vest through December 15, 2024 and 159 additional shares purchased pursuant to the DexCom, Inc. 2015 Employee Stock Purchase Plan.

SEC source: 0001093557-24-000127 · edgardoc.xml · nonDerivative · entry 1

Leach Jacob Steven · CIK 0001700255 · EVP Chief Operating Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 265,577

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 54,896 unvested restricted stock units, 26,053 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 16,931 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 8,988 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 2,924 of which were granted on December 15, 2021 and shall vest through December 15, 2024 and 145 additional shares purchased pursuant to the DexCom, Inc. 2015 Employee Stock Purchase Plan.

SEC source: 0001093557-24-000128 · edgardoc.xml · nonDerivative · entry 1

Stern Sadie · CIK 0001797971 · EVP Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,877

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 53,159 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 7,060 of which were granted on March 8, 2022 and shall vest through March 8, 2025, 1,668 of which were granted on December 15, 2021 and shall vest through December 15, 2024, 8,208 of which were granted on November 19, 2020 and shall vest through November 19, 2024.

SEC source: 0001093557-24-000123 · edgardoc.xml · nonDerivative · entry 1

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 67,560

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 · balance_after: Included in this number are 60,303 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 24,080 of which were granted on March 8, 2022 and shall vest through March 8, 2026.

SEC source: 0001093557-24-000119 · edgardoc.xml · nonDerivative · entry 1

TOPOL ERIC · CIK 0001468345 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,618

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000118 · edgardoc.xml · nonDerivative · entry 1

Malady Kyle · CIK 0001760581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,142

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000115 · edgardoc.xml · nonDerivative · entry 1

Driscoll Rimma · CIK 0001952575 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,640

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: Represents 6,640 restricted stock units, of which 2,632 were granted on May 22, 2024 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 and 4,008 that were granted on August 24, 2023 and will vest over three years until August 24, 2026.

SEC source: 0001093557-24-000117 · edgardoc.xml · nonDerivative · entry 1

Heller Bridgette P · CIK 0001485616 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,349

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000116 · edgardoc.xml · nonDerivative · entry 1

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,973

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000114 · edgardoc.xml · nonDerivative · entry 1

Dahut Karen M · CIK 0001533450 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,613

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000113 · edgardoc.xml · nonDerivative · entry 1

Collins Richard Alexander · CIK 0001700619 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,632

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000112 · edgardoc.xml · nonDerivative · entry 1

AUGUSTINOS NICHOLAS · CIK 0001238485 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,618

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000111 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,613

F1 · shares: The RSU Award was granted on May 22, 2024 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 2025 Annual Meeting of Stockholders. 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: 0001093557-24-000097 · edgardoc.xml · nonDerivative · entry 2

TOPOL ERIC · CIK 0001468345 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Family Holdings

Disclosed balance after: 377,927

F1 · shares: Shares were transferred from direct ownership to ownership under the Topol Family Holdings, LLC, upon vesting of previously awarded restricted stock units.

F2 · 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: 0001093557-24-000097 · edgardoc.xml · nonDerivative · entry 1

TOPOL ERIC · CIK 0001468345 · 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 Topol Family Holdings, LLC, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-24-000096 · edgardoc.xml · nonDerivative · entry 2

KAHN BARBARA · CIK 0001520391 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 22,575

F1 · 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.

F2 · 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: 0001093557-24-000096 · edgardoc.xml · nonDerivative · entry 1

KAHN BARBARA · CIK 0001520391 · 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 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: 0001093557-24-000095 · edgardoc.xml · nonDerivative · entry 2

FOLETTA MARK G · CIK 0001236389 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 62,398

F1 · 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.

F2 · 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: 0001093557-24-000095 · edgardoc.xml · nonDerivative · entry 1

FOLETTA MARK G · CIK 0001236389 · 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 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: 0001093557-24-000094 · edgardoc.xml · nonDerivative · entry 2

Dahut Karen M · CIK 0001533450 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 15,166

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: 0001093557-24-000094 · edgardoc.xml · nonDerivative · entry 1

Dahut Karen M · CIK 0001533450 · 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 WILLIAM L DAHUT, JR TRUST & KAREN M DAHUT TRUST Dated 6/14/2005, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-24-000093 · edgardoc.xml · nonDerivative · entry 2

Collins Richard Alexander · CIK 0001700619 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 39,310

F1 · shares: Shares were transferred from direct ownership to ownership under the Richard A. Collins Revocable Trust upon vesting of previously awarded restricted stock units.

F2 · balance_after: Shares are held by the Richard A. Collins Revocable Trust, with respect to which the reporting person is a trustee.

SEC source: 0001093557-24-000093 · edgardoc.xml · nonDerivative · entry 1

Collins Richard Alexander · CIK 0001700619 · 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 Richard A. Collins Revocable Trust upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-24-000092 · edgardoc.xml · nonDerivative · entry 2

AUGUSTINOS NICHOLAS · CIK 0001238485 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 37,083

F1 · shares: Shares were transferred from direct ownership to ownership under the Kirschner/Augustinos Revocable Trust, upon vesting of previously awarded restricted stock units.

F2 · balance_after: Shares are held by the Kirschner/Augustinos Revocable Trust, of which the reporting person is trustee.

SEC source: 0001093557-24-000092 · edgardoc.xml · nonDerivative · entry 1

AUGUSTINOS NICHOLAS · CIK 0001238485 · 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 Kirschner/Augustinos Revocable Trust, upon vesting of previously awarded restricted stock units.

SEC source: 0001093557-24-000091 · edgardoc.xml · nonDerivative · entry 2

ALTMAN STEVEN R · CIK 0001191307 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · by Trust

Disclosed balance after: 56,017

F1 · 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.

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: 0001093557-24-000091 · edgardoc.xml · nonDerivative · entry 1

ALTMAN STEVEN R · CIK 0001191307 · 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 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: 0001093557-24-000083 · edgardoc.xml · nonDerivative · entry 1

Dolan Matthew Vincent · CIK 0001914994 · EVP Strategy and Corporate Dev

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 40,075

F1 · shares: On December 15, 2023, Mr. Dolan adopted a 10b5-1 Plan. 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 40,075 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, and 3,852 of which were granted on March 8, 2022 and shall vest through March 8, 2025 and 121 additional shares purchased pursuant to the DexCom, Inc. 2015 Employee Stock Purchase Plan.

SEC source: 0001093557-24-000081 · edgardoc.xml · nonDerivative · entry 1

Brown Michael Jon · CIK 0001899922 · EVP Chief Legal Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 68,212

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 · balance_after: Included in this number are 60,303 unvested restricted stock units, 21,711 of which were granted on March 8, 2024 and shall vest through March 8, 2027, 14,512 of which were granted on March 8, 2023 and shall vest through March 8, 2026, 24,080 of which were granted on March 8, 2022 and shall vest through March 8, 2026, and 159 shares purchased pursuant to the DexCom, Inc. 2015 Employee Stock Purchase Plan.