Beaver Sandra

SEC source: 0001438133-26-000077 · wk-form4_1779480632.xml · derivative · entry 1

Beaver Sandra · CIK 0001944884 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,110

Underlying: Common Stock · 5,110 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock units (RSU) represents a contingent right to receive either one share of the Issuers common stock or cash in lieu thereof, at the Issuers discretion, in accordance with the terms of the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan).

F2 · derivative.exercise_date: Such RSUs were granted to the Reporting Person on May 20, 2026, and will vest on the one-year anniversary thereof, subject to the terms of the 2023 Plan.

F2 · derivative.expiration_date: Such RSUs were granted to the Reporting Person on May 20, 2026, and will vest on the one-year anniversary thereof, subject to the terms of the 2023 Plan.

SEC source: 0001438133-25-000221 · wk-form4_1764105030.xml · derivative · entry 1

Beaver Sandra · CIK 0001944884 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,242

Underlying: Common Stock · 20,242 shares

Expires not disclosed

F1 · security: Awarded on November 7, 2025 pursuant to the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan).

F2 · derivative.exercise_price: Each RSU represents a contingent right to receive either one share of common stock of the Issuer or cash in lieu thereof, at the Issuer's discretion, in accordance with the terms of the 2023 Plan.

F3 · derivative.exercise_date: RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 11/15/2026, and the remaining shares shall vest in two (2) equal annual installments thereafter.

F3 · derivative.expiration_date: RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 11/15/2026, and the remaining shares shall vest in two (2) equal annual installments thereafter.

SEC source: 0001570562-25-000080 · wk-form4_1747265253.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 167,089

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and represent shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of certain restricted stock units.

SEC source: 0001570562-25-000053 · wk-form4_1742509639.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 173,583

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and represent shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of certain Restricted Stock Units.

F2 · price: The shares were sold in multiple trades at prices ranging from $13.185 to $13.256. The price reported 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 transaction was effected.

SEC source: 0001570562-25-000043 · wk-form4_1741733687.xml · derivative · entry 3

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,813

Underlying: Common Stock · 50,813 shares

Expires 2035-03-07

F4 · derivative.exercise_date: The shares subject to the option will vest over a period of four years, with 1/4th of the shares subject to the option vesting annually on the anniversary of March 7, 2025, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-25-000043 · wk-form4_1741733687.xml · derivative · entry 2

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,663

Underlying: Common Stock · 35,663 shares

Expires not disclosed

F2 · derivative.exercise_price: Each performance-based restricted stock unit ("PSU") represents the right to receive, following vesting, a number of shares of common stock of the issuer up to 200% of the number of PSUs.

F3 · derivative.exercise_date: The number of shares of Common Stock acquired upon vesting of the PSUs is contingent upon the achievement of a preestablished performance metrics, as approved by the Issuer's Compensation Committee, over a two-year performance period. Subject to the Issuer's compensation committee certifying the underlying performance metrics, 100% of the PSUs will vest on March 7, 2028 in each case subject to time based service requirements and continuous employment with the Issuer through the vesting dates.

F3 · derivative.expiration_date: The number of shares of Common Stock acquired upon vesting of the PSUs is contingent upon the achievement of a preestablished performance metrics, as approved by the Issuer's Compensation Committee, over a two-year performance period. Subject to the Issuer's compensation committee certifying the underlying performance metrics, 100% of the PSUs will vest on March 7, 2028 in each case subject to time based service requirements and continuous employment with the Issuer through the vesting dates.

SEC source: 0001570562-25-000043 · wk-form4_1741733687.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 182,579

F1 · shares: Represents shares issuable on settlement of restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest over a period of four years, with 1/4th of the RSU vesting annually on the anniversary of March 7, 2025, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-24-000139 · wk-form4_1735252093.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 146,916

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and represent shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001570562-24-000121 · wk-form4_1725673547.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,502

F1 · kind: The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

SEC source: 0001570562-24-000084 · wk-form4_1715734540.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151,778

F1 · kind: The sale reported on this Form 4 represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. The sale occurred automatically to satisfy the tax withholding obligations to be funded by a "sell to cover" transaction and does not represent a discretionary trade by the Reporting Person.

F2 · price: The shares were sold in multiple trades at prices ranging from $12.51 to $13.06. The price reported 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 transaction was effected.

SEC source: 0001570562-24-000054 · wk-form4_1711058949.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,201

F1 · kind: The sales reported on this Form 4 were mandated by the Issuer pursuant to Restricted Stock Unit Agreements requiring 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 · price: The shares were sold in multiple trades at prices ranging from $13.555 to $14.12. The price reported 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 transaction was effected.

SEC source: 0001570562-24-000029 · wk-form4_1708738037.xml · nonDerivative · entry 2

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 159,873

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and represent shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the PSUs.

SEC source: 0001570562-24-000029 · wk-form4_1708738037.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 161,694

F1 · shares: Represents shares issuable on settlement of performance restricted stock units ("PSUs") granted to the reporting person in January 2023. The Issuer's Compensation Committee certified that the reporting person had achieved the set corporate development goal as of December 20, 2023. One-third of the PSU (4,372 shares) was delivered on February 21, 2024 after certification of the milestone being achieved. The remaining two-thirds will vest annually on the anniversary of December 20, 2023 provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-24-000018 · wk-form4_1707521768.xml · derivative · entry 3

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 47,337

Underlying: Common Stock · 47,337 shares

Expires 2034-02-07

F4 · derivative.exercise_date: The shares subject to the option will vest over a period of four years, with 1/4th of the shares subject to the option vesting annually on the anniversary of February 7, 2024, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-24-000018 · wk-form4_1707521768.xml · derivative · entry 2

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,606

Underlying: Common Stock · 17,606 shares

Expires not disclosed

F2 · derivative.exercise_price: Each performance-based restricted stock unit (PSU) represents the right to receive, following vesting, a number of shares of common stock of the issuer up to 200% of the number of PSUs.

F3 · derivative.exercise_date: The number of shares of Common Stock acquired upon vesting of the PSUs is contingent upon the achievement of a preestablished performance metrics, as approved by the Issuer's Compensation Committee, over a two-year performance period. Subject to the Issuer's compensation committee certifying the underlying performance metrics, 50% of the PSUs earned will vest on February 7, 2026 and the remaining 50% of the PSUs will vest on February 7, 2027, in each case subject to time based service requirements and continuous employment with the Issuer through the vesting dates.

F3 · derivative.expiration_date: The number of shares of Common Stock acquired upon vesting of the PSUs is contingent upon the achievement of a preestablished performance metrics, as approved by the Issuer's Compensation Committee, over a two-year performance period. Subject to the Issuer's compensation committee certifying the underlying performance metrics, 50% of the PSUs earned will vest on February 7, 2026 and the remaining 50% of the PSUs will vest on February 7, 2027, in each case subject to time based service requirements and continuous employment with the Issuer through the vesting dates.

SEC source: 0001570562-24-000018 · wk-form4_1707521768.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 148,579

F1 · shares: Represents shares issuable on settlement of restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest over a period of four years, with 1/4th of the RSU vesting annually on the anniversary of February 7, 2024, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-23-000106 · wk-form4_1694220838.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 113,368

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and represent shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of certain Restricted Stock Units.

SEC source: 0001570562-23-000099 · wk-form4_1692231918.xml · nonDerivative · entry 2

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 116,546

F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person and represent shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of the PSUs.

SEC source: 0001570562-23-000099 · wk-form4_1692231918.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 118,757

F1 · shares: Represents shares issuable on settlement of performance restricted stock units ("PSUs") granted to the reporting person in January 2023. On August 14, 2023, the Issuer's Compensation Committee certified that the reporting person had achieved the set corporate development goal as of May 9, 2023. One-third of the PSU (6,557 shares) was vested and delivered immediately upon certification of the goal achievement. The remaining two-thirds will vest annually on the anniversary of May 9, 2023 provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-23-000010 · wf-form4_167486545975097.xml · derivative · entry 2

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,670

Underlying: Common Stock · 85,670 shares

Expires 2033-01-25

F2 · derivative.exercise_date: The shares subject to the option will vest over a period of four years, with 1/4th of the shares subject to the option vesting annually on the anniversary of January 25, 2023, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-23-000010 · wf-form4_167486545975097.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,085

F1 · shares: Represents shares issuable on settlement of restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest over a period of four years, with 1/4th of the RSU vesting annually on the anniversary of January 25, 2023, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-22-000125 · wf-form4_166249851366040.xml · derivative · entry 2

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 169,158

Underlying: Common Stock · 169,158 shares

Expires 2032-09-05

F2 · derivative.exercise_date: The shares subject to the option will vest over a period of four years, with 1/4th of the shares subject to the option vesting annually on the anniversary of September 5, 2022, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.

SEC source: 0001570562-22-000125 · wf-form4_166249851366040.xml · nonDerivative · entry 1

Beaver Sandra · CIK 0001944884 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,443

F1 · shares: Represents shares issuable on settlement of restricted stock units ("RSUs") granted to the reporting person. Each RSU represents a contingent right to receive one share of the Issuer's common stock. The RSUs will vest over a period of four years, with 1/4th of the shares subject to the option vesting annually on the anniversary of September 5, 2022, provided the reporting person remains in continuous service on each vesting date, subject to accelerated vesting in certain events, including certain terminations of the reporting person or upon certain changes of control of the issuer.