TNDM

SEC source: 0001438133-20-000120 · wf-form4_159658594562461.xml · derivative · entry 10

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,180

Underlying: Common Stock · 6,653 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.

F7 · derivative.exercise_date: The option vested as to twenty-five percent (25%) of the underlying shares on 05/17/2018, and the remaining shares vested in thiry-six (36) equal monthly installments thereafter.

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

SEC source: 0001438133-20-000120 · wf-form4_159658594562461.xml · derivative · entry 9

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 16,920 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: Fifty percent (50%) of the underlying shares subject to the option vested on 12/16/2017, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

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

SEC source: 0001438133-20-000120 · wf-form4_159658594562461.xml · derivative · entry 8

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 7,960 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 vested as to twenty-five percent (25%) of the underlying shares on 04/23/2014, and the remaining shares vested in thirty-six (36) equal monthly installments thereafter.

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

SEC source: 0001438133-20-000120 · wf-form4_159658594562461.xml · derivative · entry 7

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,667 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: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

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

SEC source: 0001438133-20-000120 · wf-form4_159658594562461.xml · nonDerivative · entry 6

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,756

SEC source: 0001438133-20-000120 · wf-form4_159658594562461.xml · nonDerivative · entry 5

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,856

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $102.00 to $102.73. 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: 0001438133-20-000120 · wf-form4_159658594562461.xml · nonDerivative · entry 4

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,956

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: 0001438133-20-000120 · wf-form4_159658594562461.xml · nonDerivative · entry 3

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,303

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: 0001438133-20-000120 · wf-form4_159658594562461.xml · nonDerivative · entry 2

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,383

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: 0001438133-20-000120 · wf-form4_159658594562461.xml · nonDerivative · entry 1

Sheridan John F · CIK 0001365369 · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,423

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: 0001438133-20-000122 · wf-form4_159658613637631.xml · derivative · entry 4

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,160

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.

F5 · derivative.exercise_date: The option vested as to fifty percent (50%) of the underlying shares on 06/14/2019, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

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

SEC source: 0001438133-20-000122 · wf-form4_159658613637631.xml · nonDerivative · entry 2

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,520

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $110.00 to $110.67. 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: 0001438133-20-000122 · wf-form4_159658613637631.xml · nonDerivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,520

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: 0001438133-20-000124 · wf-form4_159658634151927.xml · derivative · entry 10

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Common Stock · 20,000 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.

F11 · derivative.exercise_date: The option vested as to fifty percent (50%) of the underlying shares on 06/14/2019, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

F10 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-20-000124 · wf-form4_159658634151927.xml · derivative · entry 9

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 30,000 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.

F9 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

F10 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 8

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,256

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 10, 2018.

F8 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $110.50 to $110.67. 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: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 7

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,526

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 10, 2018.

F7 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $109.50 to $110.36. 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: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,739

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 10, 2018.

F6 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $108.48 to $109.47. 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: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,740

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 10, 2018.

F5 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $107.43 to $108.43. 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: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,412

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 10, 2018.

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $106.36 to $107.35. 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: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,306

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 10, 2018.

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $105.22 to $106.17. 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: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,256

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: 0001438133-20-000124 · wf-form4_159658634151927.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,256

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: 0001438133-20-000123 · wf-form4_159658620814357.xml · nonDerivative · entry 3

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 17,500

F6 · ownership.nature: The securities are directly owned by Twomey Family Investments, LLC. The Reporting Person is co-manager of Twomey Family Investments, LLC and shares voting and investment power over the securities held by Twomey Family Investments, LLC and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Twomey Family Investments, LLC, except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001438133-20-000123 · wf-form4_159658620814357.xml · nonDerivative · entry 2

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 27,500

F4 · kind: The shares were given as a bona fide gift to the Chris and Rebecca Twomey Family Foundation at the San Diego Foundation.

F5 · price: The price per share reflects the average of the high and low trading prices of the Company's stock on the transaction date.

F3 · ownership.nature: The securities are held by the Christopher J. Twomey and Rebecca J. Twomey Family Trust UTD September 20, 2002.

SEC source: 0001438133-20-000123 · wf-form4_159658620814357.xml · nonDerivative · entry 1

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 30,000

F1 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $110.00 and $110.67. 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.

F3 · ownership.nature: The securities are held by the Christopher J. Twomey and Rebecca J. Twomey Family Trust UTD September 20, 2002.

SEC source: 0001438133-20-000104 · wf-form4_159415437351275.xml · derivative · entry 4

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,160

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.

F5 · derivative.exercise_date: The option vested as to fifty percent (50%) of the underlying shares on 06/14/2019, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

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

SEC source: 0001438133-20-000104 · wf-form4_159415437351275.xml · nonDerivative · entry 2

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,520

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $105.00 to $105.32. 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: 0001438133-20-000104 · wf-form4_159415437351275.xml · nonDerivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,520

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: 0001438133-20-000105 · wf-form4_159415440115391.xml · derivative · entry 6

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Stock Option · 2,000 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.

F6 · derivative.exercise_date: Fifty percent (50%) of the underlying shares subject to the option vested on 12/1/2018, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

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

SEC source: 0001438133-20-000105 · wf-form4_159415440115391.xml · nonDerivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,566

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 16, 2019.

F4 · price: The price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $102.01 to $102.73. 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: 0001438133-20-000105 · wf-form4_159415440115391.xml · nonDerivative · entry 3

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,246

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: 0001438133-20-000105 · wf-form4_159415440115391.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,566

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on December 16, 2019.

F3 · price: The price reported is the weighted average price. The shares were sold in multiple transactions at prices ranging from $100.94 to $101.51. 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: 0001438133-20-000105 · wf-form4_159415440115391.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, Chief Legal & Compliance

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,886

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: 0001438133-20-000102 · wf-form4_159372834622010.xml · derivative · entry 10

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 95,160

Underlying: Common Stock · 4,840 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.

F10 · derivative.exercise_date: The option vested as to fifty percent (50%) of the underlying shares on 06/14/2019, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

F8 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-20-000102 · wf-form4_159372834622010.xml · derivative · entry 9

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,340

Underlying: Common Stock · 5,160 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.

F9 · derivative.exercise_date: The option vested as to twenty-five percent (25%) of the underlying shares on 05/17/2018, and the remaining shares shall vest in thiry-six (36) equal monthly installments thereafter.

F8 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-20-000102 · wf-form4_159372834622010.xml · nonDerivative · entry 6

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,520

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F5 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $101.00 to $101.21. 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: 0001438133-20-000102 · wf-form4_159372834622010.xml · nonDerivative · entry 5

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,258

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: 0001438133-20-000102 · wf-form4_159372834622010.xml · nonDerivative · entry 4

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,520

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $100.00 to $100.95. 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: 0001438133-20-000102 · wf-form4_159372834622010.xml · nonDerivative · entry 3

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,782

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: 0001438133-20-000106 · wf-form4_159415442630280.xml · nonDerivative · entry 4

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 20,000

F7 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $100.00 and $100.53. 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.

F8 · ownership.nature: The securities are directly owned by Twomey Family Investments, LLC. The Reporting Person is co-manager of Twomey Family Investments, LLC and shares voting and investment power over the securities held by Twomey Family Investments, LLC and may be deemed to have indirect beneficial ownership of such shares. The Reporting Person disclaims beneficial ownership of such securities held by Twomey Family Investments, LLC, except to the extent of his proportionate pecuniary interest therein.

SEC source: 0001438133-20-000106 · wf-form4_159415442630280.xml · nonDerivative · entry 3

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 35,000

F5 · kind: The shares were given as a bona fide gift to the Chris and Rebecca Twomey Family Foundation at the San Diego Foundation.

F6 · price: The price per share reflects the average of the high and low trading prices of the Company's stock on the transaction date.

F3 · ownership.nature: The securities are held by the Christopher J. Twomey and Rebecca J. Twomey Family Trust UTD September 20, 2002.

SEC source: 0001438133-20-000106 · wf-form4_159415442630280.xml · nonDerivative · entry 2

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 37,500

F1 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $101.01 and $101.22. 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.

F3 · ownership.nature: The securities are held by the Christopher J. Twomey and Rebecca J. Twomey Family Trust UTD September 20, 2002.

SEC source: 0001438133-20-000106 · wf-form4_159415442630280.xml · nonDerivative · entry 1

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 38,562

F1 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $100.00 and $100.95. 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.

F3 · ownership.nature: The securities are held by the Christopher J. Twomey and Rebecca J. Twomey Family Trust UTD September 20, 2002.

SEC source: 0001438133-20-000102 · wf-form4_159372834622010.xml · derivative · entry 8

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

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.

F7 · derivative.exercise_date: The option vested as to fifty percent (50%) of the underlying shares on 12/01/2018, and the remaining shares vested in twelve (12) equal monthly installments thereafter.

F8 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001438133-20-000102 · wf-form4_159372834622010.xml · nonDerivative · entry 2

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,520

F2 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020.

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $95.00 to $95.41. 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: 0001438133-20-000102 · wf-form4_159372834622010.xml · nonDerivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP & CHIEF FINANCIAL OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,520

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: 0001438133-20-000103 · wf-form4_159372839393327.xml · nonDerivative · entry 2

BLICKENSTAFF KIM D · CIK 0001238913 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 584,593

F1 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 11, 2019.

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $96.00 and $96.1350.

F3 · ownership.nature: The securities are held by the Kim Blickenstaff Revocable Trust dated April 15, 2010.

SEC source: 0001438133-20-000103 · wf-form4_159372839393327.xml · nonDerivative · entry 1

BLICKENSTAFF KIM D · CIK 0001238913 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 594,785

F1 · kind: The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 11, 2019.

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $95.00 and $95.98.

F3 · ownership.nature: The securities are held by the Kim Blickenstaff Revocable Trust dated April 15, 2010.

SEC source: 0001438133-20-000092 · wf-form4_159182108134419.xml · derivative · entry 1

McGroddy-Goetz Kathleen · CIK 0001814371 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,659

Underlying: Common Stock · 3,659 shares

Expires not disclosed

F1 · security: Awarded on June 8, 2020 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 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: The total number of shares subject to the RSU will 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: The total number of shares subject to the RSU will 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.