ROBERTSON REBECCA B

SEC source: 0001193125-26-257714 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,587

F1 · shares: Represents restricted stock units ("RSUs").

SEC source: 0001438133-26-000074 · wk-form4_1779480402.xml · derivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,759 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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).

F3 · derivative.exercise_date: On May 21, 2025, the Reporting Person was granted 8,759 RSUs, all of which vested and converted into shares of the Issuers common stock on the one-year anniversary thereof in accordance with the 2023 Plan.

F3 · derivative.expiration_date: On May 21, 2025, the Reporting Person was granted 8,759 RSUs, all of which vested and converted into shares of the Issuers common stock on the one-year anniversary thereof in accordance with the 2023 Plan.

SEC source: 0001438133-26-000074 · wk-form4_1779480402.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,542

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001438133-26-000074 · wk-form4_1779480402.xml · derivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,220

Underlying: Common Stock · 10,220 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: 0001193125-26-093506 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 18,749

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001193125-26-004760 · ownership.xml · derivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,650

Underlying: Common Stock · 2,500 shares

Expires 2029-03-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · derivative.exercise_date: The stock option is fully vested and currently exercisable.

SEC source: 0001193125-26-004760 · ownership.xml · nonDerivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,576

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001193125-26-004760 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,076

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001193125-25-313867 · ownership.xml · derivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,150

Underlying: Common Stock · 5,000 shares

Expires 2029-03-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · derivative.exercise_date: The stock option is fully vested and currently exercisable.

SEC source: 0001193125-25-313867 · ownership.xml · nonDerivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,388

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001193125-25-313867 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,388

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0001193125-25-307906 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,388

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0000950170-25-113220 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,215

F1 · kind: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0000950170-25-088294 · ownership.xml · nonDerivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,042

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.8 to $17.96, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in this footnote.

SEC source: 0000950170-25-088294 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,230

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.01 to $17.9, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in this footnote.

SEC source: 0001193125-26-004759 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 21,230

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.01 to $17.9, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in this footnote.

SEC source: 0000950170-25-087603 · ownership.xml · derivative · entry 6

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 19,455 shares

Expires 2031-06-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · derivative.exercise_date: The option is fully vested and exercisable as of the transaction date.

SEC source: 0000950170-25-087603 · ownership.xml · derivative · entry 5

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 15,150

Underlying: Common Stock · 545 shares

Expires 2029-03-21

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F4 · derivative.exercise_date: The option is fully vested and exercisable as of the transaction date.

SEC source: 0000950170-25-087603 · ownership.xml · nonDerivative · entry 4

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,675

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17 to $17.35, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased or sold, as applicable, at each separate price within the ranges set forth in this footnote.

SEC source: 0000950170-25-087603 · ownership.xml · nonDerivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 48,675

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0000950170-25-087603 · ownership.xml · nonDerivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,220

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person.

SEC source: 0000950170-25-087603 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,675

F1 · shares: Represents 8,828 restricted stock units.

SEC source: 0001438133-25-000106 · wk-form4_1748030605.xml · derivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,387 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Awarded on May 22, 2024 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 restricted stock unit (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 will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

F3 · derivative.expiration_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

SEC source: 0001438133-25-000106 · wk-form4_1748030605.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,783

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001438133-25-000106 · wk-form4_1748030605.xml · derivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,759

Underlying: Common Stock · 8,759 shares

Expires not disclosed

F4 · security: Awarded on May 21, 2025 pursuant to the 2023 Plan.

F2 · derivative.exercise_price: Each restricted stock unit (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 will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

F3 · derivative.expiration_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

SEC source: 0000950170-24-115010 · ownership.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,847

F1 · shares: Represents 6,618 restricted stock units ("RSUs").

F2 · balance_after: Represents 19,847 RSUs.

SEC source: 0001438133-24-000121 · wk-form4_1716592892.xml · derivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,434 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · security: Awarded on May 24, 2023 pursuant to the 2023 Plan.

F2 · derivative.exercise_price: Each restricted stock unit (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 will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

F3 · derivative.expiration_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

SEC source: 0001438133-24-000121 · wk-form4_1716592892.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,396

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001438133-24-000121 · wk-form4_1716592892.xml · derivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,387

Underlying: Common Stock · 4,387 shares

Expires not disclosed

F1 · security: Awarded on May 22, 2024 pursuant to the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan (the 2023 Plan).

F2 · derivative.exercise_price: Each restricted stock unit (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 will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

F3 · derivative.expiration_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

SEC source: 0001438133-23-000109 · wf-form4_168513213829237.xml · derivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,757 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · security: Awarded on May 25, 2022 pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the 2013 Plan).

F5 · 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 2013 Plan.

F6 · derivative.exercise_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2013 Plan.

F6 · derivative.expiration_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2013 Plan.

SEC source: 0001438133-23-000109 · wf-form4_168513213829237.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,962

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001438133-23-000109 · wf-form4_168513213829237.xml · derivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,434

Underlying: Common Stock · 4,434 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Awarded on May 24, 2023 pursuant to the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan (the 2023 Plan).

F2 · derivative.exercise_price: Each restricted stock unit (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 will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

F3 · derivative.expiration_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2023 Plan.

SEC source: 0001438133-22-000141 · wf-form4_165412741951482.xml · derivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,757

Underlying: Common Stock · 2,757 shares

Expires not disclosed

F1 · security: Awarded on May 25, 2022 pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the "2013 Plan").

F2 · derivative.exercise_price: Each restricted stock unit ("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 2013 Plan.

F3 · derivative.exercise_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2013 Plan.

F3 · derivative.expiration_date: RSU will vest on the one-year anniversary of the grant date, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000095 · wf-form4_165300479694005.xml · derivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,205 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · security: Awarded on May 18, 2021 pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the "2013 Plan").

F2 · derivative.exercise_price: Each restricted stock (RSU) unit represents a contingent right to receive one share of common stock of the Company.

F3 · derivative.exercise_date: Shares will vest on the one year anniversary of the grant date, subject to the terms of the 2013 Plan.

F3 · derivative.expiration_date: Shares will vest on the one year anniversary of the grant date, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000095 · wf-form4_165300479694005.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,205

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001438133-22-000062 · wf-form4_165169807583447.xml · derivative · entry 4

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,892

Underlying: Common Stock · 1,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shall vest in 36 equal monthly installments from January 2, 2019, subject to the terms of Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the "2013 Plan").

F6 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-22-000062 · wf-form4_165169807583447.xml · nonDerivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $96.77 to $97.37. The Reporting Person undertakes to provide the SEC, the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-22-000062 · wf-form4_165169807583447.xml · nonDerivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 967

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $95.60 to $96.51. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-22-000062 · wf-form4_165169807583447.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,500

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001438133-22-000010 · wf-form4_164392367063084.xml · derivative · entry 5

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 33,392

Underlying: Common Stock · 1,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · derivative.exercise_date: The option shall vest in 36 equal monthly installments from January 2, 2019, subject to the terms of Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the "2013 Plan").

F7 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-22-000010 · wf-form4_164392367063084.xml · nonDerivative · entry 4

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F5 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $118.52 to $119.50. The Reporting Person undertakes to provide the SEC, the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-22-000010 · wf-form4_164392367063084.xml · nonDerivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 533

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $117.46 to $118.29. The Reporting Person undertakes to provide the SEC, the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-22-000010 · wf-form4_164392367063084.xml · nonDerivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,200

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $116.33 to $116.99. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-22-000010 · wf-form4_164392367063084.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,500

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001438133-21-000199 · wf-form4_163597280304758.xml · derivative · entry 4

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,892

Underlying: Common Stock · 1,108 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · derivative.exercise_date: The option shall vest in 36 equal monthly installments from January 2, 2019, subject to the terms of Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the "2013 Plan").

F6 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-21-000199 · wf-form4_163597280304758.xml · nonDerivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $136.19 to $136.53. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-21-000199 · wf-form4_163597280304758.xml · nonDerivative · entry 2

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 278

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $135.05 to $136.04. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-21-000199 · wf-form4_163597280304758.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,500

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: Represents shares of common stock received upon exercise of a stock option award.

SEC source: 0001438133-21-000114 · wf-form4_162803018374811.xml · nonDerivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 392

F1 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 26, 2021.

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $107.50 to $107.56. The Reporting Person undertakes to provide the Securities and Exchange Commission (the "SEC"), the issuer, and any security holder full information regarding the number of shares and the prices at which the shares were sold.

SEC source: 0001438133-21-000098 · wf-form4_162335875512522.xml · derivative · entry 3

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,000

Underlying: Common Stock · 500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_date: The option shall vest in 36 equal monthly installments from January 2, 2019.

F4 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.