TNDM

SEC source: 0001438133-23-000022 · wf-form4_167667209130649.xml · nonDerivative · entry 2

Sheridan John F · CIK 0001365369 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,468

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-23-000022 · wf-form4_167667209130649.xml · nonDerivative · entry 1

Sheridan John F · CIK 0001365369 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,791

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: 0001438133-23-000020 · wf-form4_167667190684692.xml · derivative · entry 3

Morrison Susan · CIK 0001582970 · EVP & Chief Admin. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,462

Underlying: Common Stock · 162 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-23-000020 · wf-form4_167667190684692.xml · nonDerivative · entry 2

Morrison Susan · CIK 0001582970 · EVP & Chief Admin. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,582

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-23-000020 · wf-form4_167667190684692.xml · nonDerivative · entry 1

Morrison Susan · CIK 0001582970 · EVP & Chief Admin. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,637

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: 0001438133-23-000010 · wf-form4_167666960089426.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,462

Underlying: Common Stock · 162 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 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F4 · 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.

F5 · derivative.exercise_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F5 · derivative.expiration_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-23-000010 · wf-form4_167666960089426.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,124

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-23-000010 · wf-form4_167666960089426.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,191

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: 0001438133-23-000014 · wf-form4_167667076532391.xml · derivative · entry 3

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,462

Underlying: Common Stock · 162 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-23-000014 · wf-form4_167667076532391.xml · nonDerivative · entry 2

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,694

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-23-000014 · wf-form4_167667076532391.xml · nonDerivative · entry 1

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,756

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: 0001438133-23-000034 · wf-form4a_167717872235016.xml · derivative · entry 3

Hansen Shannon Marie · CIK 0001908267 · SVP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,369

Underlying: Common Stock · 2,123 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSU granted on 2/15/2022 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSU granted on 2/15/2022 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-23-000034 · wf-form4a_167717872235016.xml · nonDerivative · entry 2

Hansen Shannon Marie · CIK 0001908267 · SVP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,591

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-23-000034 · wf-form4a_167717872235016.xml · nonDerivative · entry 1

Hansen Shannon Marie · CIK 0001908267 · SVP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,457

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: 0001438133-23-000002 · wf-form4_167304953982597.xml · derivative · entry 2

Sodhi Rajwant · CIK 0001715325 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,070

Underlying: Common Stock · 1,069 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: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (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: RSUs granted on January 4, 2021. The total number of shares subject to the RSU vest over a period of three years in equal annual installments on the anniversary of the grant, subject to the terms of the 2013 Plan.

F3 · derivative.expiration_date: RSUs granted on January 4, 2021. The total number of shares subject to the RSU vest over a period of three years in equal annual installments on the anniversary of the grant, subject to the terms of the 2013 Plan.

SEC source: 0001438133-23-000002 · wf-form4_167304953982597.xml · nonDerivative · entry 1

Sodhi Rajwant · CIK 0001715325 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,873

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: 0001438133-22-000261 · wf-form4_167148943140963.xml · derivative · entry 7

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 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 · derivative.exercise_date: The options vested as to fifty (50%) of the underlying shares on 6/14/2019, and the remaining shares vested in twelve (12) equal monthly installments thereafter, subject to the terms of the 2013 Plan.

F5 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-22-000261 · wf-form4_167148943140963.xml · nonDerivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,029

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $40.20 to $40.37. 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: 0001438133-22-000261 · wf-form4_167148943140963.xml · nonDerivative · entry 3

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,029

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: 0001438133-22-000261 · wf-form4_167148943140963.xml · derivative · entry 6

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 15,000 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 · derivative.exercise_date: The options vested as to fifty (50%) of the underlying shares on 6/14/2019, and the remaining shares vested in twelve (12) equal monthly installments thereafter, subject to the terms of the 2013 Plan.

F5 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-22-000261 · wf-form4_167148943140963.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,029

F1 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $40.20 to $40.50. 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: 0001438133-22-000261 · wf-form4_167148943140963.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,029

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: 0001438133-22-000259 · wf-form4_167148873402801.xml · derivative · entry 3

Carpenter Rick · CIK 0001513889 · Chief Technical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,871

Underlying: Common Stock · 1,624 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSUs granted on 12/15/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSUs granted on 12/15/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000259 · wf-form4_167148873402801.xml · nonDerivative · entry 2

Carpenter Rick · CIK 0001513889 · Chief Technical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,395

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000259 · wf-form4_167148873402801.xml · nonDerivative · entry 1

Carpenter Rick · CIK 0001513889 · Chief Technical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,957

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: 0001438133-22-000247 · wf-form4_166984407968174.xml · derivative · entry 3

Leal James · CIK 0001866570 · SVP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,858

Underlying: Common Stock · 310 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000247 · wf-form4_166984407968174.xml · nonDerivative · entry 2

Leal James · CIK 0001866570 · SVP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,552

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000247 · wf-form4_166984407968174.xml · nonDerivative · entry 1

Leal James · CIK 0001866570 · SVP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,690

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: 0001438133-22-000243 · wf-form4_166984355040179.xml · derivative · entry 3

Gasser Elizabeth Anne · CIK 0001866283 · EVP, Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,236

Underlying: Common Stock · 372 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000243 · wf-form4_166984355040179.xml · nonDerivative · entry 2

Gasser Elizabeth Anne · CIK 0001866283 · EVP, Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,017

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000243 · wf-form4_166984355040179.xml · nonDerivative · entry 1

Gasser Elizabeth Anne · CIK 0001866283 · EVP, Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,146

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: 0001438133-22-000253 · wf-form4_166984474715299.xml · derivative · entry 4

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,439

Underlying: Common Stock · 406 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 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F4 · 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.

F5 · derivative.exercise_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F5 · derivative.expiration_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000253 · wf-form4_166984474715299.xml · nonDerivative · entry 2

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,356

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000253 · wf-form4_166984474715299.xml · nonDerivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,497

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: 0001438133-22-000251 · wf-form4_166984454717492.xml · derivative · entry 3

Sheridan John F · CIK 0001365369 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,918

Underlying: Common Stock · 820 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000251 · wf-form4_166984454717492.xml · nonDerivative · entry 2

Sheridan John F · CIK 0001365369 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,999

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000251 · wf-form4_166984454717492.xml · nonDerivative · entry 1

Sheridan John F · CIK 0001365369 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,406

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: 0001438133-22-000249 · wf-form4_166984430333294.xml · derivative · entry 3

Morrison Susan · CIK 0001582970 · EVP & Chief Admin. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,439

Underlying: Common Stock · 406 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000249 · wf-form4_166984430333294.xml · nonDerivative · entry 2

Morrison Susan · CIK 0001582970 · EVP & Chief Admin. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,475

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000249 · wf-form4_166984430333294.xml · nonDerivative · entry 1

Morrison Susan · CIK 0001582970 · EVP & Chief Admin. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,592

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: 0001438133-22-000245 · wf-form4_166984380665218.xml · derivative · entry 3

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,439

Underlying: Common Stock · 406 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000245 · wf-form4_166984380665218.xml · nonDerivative · entry 2

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,594

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000245 · wf-form4_166984380665218.xml · nonDerivative · entry 1

HANSEN BRIAN B · CIK 0001542377 · EVP & CHIEF COMMERCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,726

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: 0001438133-22-000241 · wf-form4_166984334543413.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,439

Underlying: Common Stock · 406 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 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F4 · 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.

F5 · derivative.exercise_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F5 · derivative.expiration_date: RSUs granted on 5/27/2020 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve(12) equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000241 · wf-form4_166984334543413.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,029

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000241 · wf-form4_166984334543413.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,231

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: 0001438133-22-000233 · wf-form4_166872927635731.xml · derivative · entry 3

Leal James · CIK 0001866570 · SVP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,676

Underlying: Common Stock · 167 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve (12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve (12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

SEC source: 0001438133-22-000233 · wf-form4_166872927635731.xml · nonDerivative · entry 2

Leal James · CIK 0001866570 · SVP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,380

F1 · kind: Shares withheld by Tandem Diabetes Care, Inc. (the Company) to satisfy tax withholding requirements on vesting of restricted stock units (RSU). No shares were sold.

SEC source: 0001438133-22-000233 · wf-form4_166872927635731.xml · nonDerivative · entry 1

Leal James · CIK 0001866570 · SVP, Operations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,455

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: 0001438133-22-000227 · wf-form4_166872854271943.xml · derivative · entry 3

Gasser Elizabeth Anne · CIK 0001866283 · EVP, Chief Strategy Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,624

Underlying: Common Stock · 163 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.

F2 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").

F3 · 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.

F4 · derivative.exercise_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve (12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.

F4 · derivative.expiration_date: RSU granted on 5/18/2021 vest as to twenty-five percent (25%) of the total number of shares subject to the RSU on the one year anniversary of the grant date, and the remaining shares shall vest in twelve (12)equal quarterly installments thereafter, subject to the terms of the 2013 Plan.