TNDM

SEC source: 0001209191-19-003104 · doc4.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,765

F2 · price: The price reported is the weighted average price. The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 6, 2018, in multiple transactions at prices ranging from $40.00 and $40.15. 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: 0001209191-19-003104 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,765

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

SEC source: 0001209191-19-000918 · doc4.xml · derivative · entry 5

Sheridan John F · CIK 0001365369 · EVP, CHIEF OPERATING OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,000

Underlying: Common Stock · 20,000 shares

Expires 2027-12-01

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

SEC source: 0001209191-19-000918 · doc4.xml · nonDerivative · entry 4

Sheridan John F · CIK 0001365369 · EVP, CHIEF OPERATING OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 666

F4 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $35.02 and $35.87.

SEC source: 0001209191-19-000918 · doc4.xml · nonDerivative · entry 3

Sheridan John F · CIK 0001365369 · EVP, CHIEF OPERATING OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,067

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $36.04 and $36.55.

SEC source: 0001209191-19-000918 · doc4.xml · nonDerivative · entry 2

Sheridan John F · CIK 0001365369 · EVP, CHIEF OPERATING OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,666

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

SEC source: 0001209191-19-002852 · doc4.xml · derivative · entry 1

ROBERTSON REBECCA B · CIK 0001201585 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in 36 equal monthly installments commencing one month following the date of grant.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-19-000918 · doc4.xml · nonDerivative · entry 1

Sheridan John F · CIK 0001365369 · EVP, CHIEF OPERATING OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 666

F1 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $37.75 and $37.85.

SEC source: 0001209191-18-062531 · doc4.xml · derivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 25,000 shares

Expires 2027-12-01

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 shall vest in twelve (12) equal monthly installments thereafter.

SEC source: 0001209191-18-062531 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,381

F2 · kind: The shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 9, 2018.

SEC source: 0001209191-18-062531 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,381

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

SEC source: 0001209191-18-061645 · doc4.xml · nonDerivative · entry 3

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Indirect · Berger Family Trust

Disclosed balance after: 200

F3 · price: The price reported is the weighted average price. The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 6, 2018, in multiple transactions at prices ranging from $34.8225 to $34.89. 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.

F4 · ownership.nature: Shares are beneficially owned by the Berger Family Trust dated April 16, 2008(the "Trust"), with respect to which reporting person is a trustee.

SEC source: 0001209191-18-061645 · doc4.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,765

F2 · price: The price reported is the weighted average price. The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 6, 2018, in multiple transactions at prices ranging from $33.80 to $34.965. 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: 0001209191-18-061645 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,765

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 · shares: Shares were acquired due to the exercise of a previously awarded stock option. Each share converts upon exercise into one share of common stock.

SEC source: 0001209191-18-062532 · doc4a.xml · derivative · entry 4

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 70,000

Underlying: Common Stock · 10,000 shares

Expires 2027-12-01

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 · kind: This amendment is being filed to reflect the exercise of the stock option award in Table II.

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

SEC source: 0001209191-18-062532 · doc4a.xml · nonDerivative · entry 3

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Indirect · Berger Family Trust

Disclosed balance after: 200

F3 · price: The price reported is the weighted average price. The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 6, 2018, in multiple transactions at prices ranging from $34.8225 to $34.89. 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.

F4 · ownership.nature: Shares are beneficially owned by the Berger Family Trust dated April 16, 2008, for which the Reporting Person is a trustee.

SEC source: 0001209191-18-062532 · doc4a.xml · nonDerivative · entry 2

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,765

F2 · price: The price reported is the weighted average price. The shares were sold, pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 6, 2018, in multiple transactions at prices ranging from $33.80 to $34.965. 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: 0001209191-18-062532 · doc4a.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,765

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

SEC source: 0001209191-18-060492 · doc4.xml · nonDerivative · entry 2

CAHILL EDWARD L · CIK 0001025665 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By HLM Venture Associates II, L.L.C.

Disclosed balance after: 17,400

F1 · shares: Represents a pro-rata in-kind distribution of Common Stock of the Issuer by HLM Venture Partners II, L.P. effected following the close of the trading market on November 28, 2018 without consideration to its limited partners and its general partner, HLM Venture Associates II, L.L.C. As a result of the distribution, HLM Venture Associates II, L.L.C. is the beneficial owner of 17,400 shares of common stock of the issuer.

F2 · ownership.nature: HLM Venture Associates II, L.L.C. is the general partner of HLM Venture Partners II, L.P. The Reporting Person is a managing member of HLM Venture Associates II, L.L.C. and, as such, may be deemed to have shared voting and dispositive power with respect to the issuer's securities held of record by HLM Venture Partners II, L.P. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his respective pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the shares for purposes of Section 16 or for any other purpose.

SEC source: 0001209191-18-060492 · doc4.xml · nonDerivative · entry 1

CAHILL EDWARD L · CIK 0001025665 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By HLM Venture Partners II, L.P.

Disclosed balance after: 0

F1 · shares: Represents a pro-rata in-kind distribution of Common Stock of the Issuer by HLM Venture Partners II, L.P. effected following the close of the trading market on November 28, 2018 without consideration to its limited partners and its general partner, HLM Venture Associates II, L.L.C. As a result of the distribution, HLM Venture Associates II, L.L.C. is the beneficial owner of 17,400 shares of common stock of the issuer.

F2 · ownership.nature: HLM Venture Associates II, L.L.C. is the general partner of HLM Venture Partners II, L.P. The Reporting Person is a managing member of HLM Venture Associates II, L.L.C. and, as such, may be deemed to have shared voting and dispositive power with respect to the issuer's securities held of record by HLM Venture Partners II, L.P. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of his respective pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the shares for purposes of Section 16 or for any other purpose.

SEC source: 0001209191-18-059305 · doc4.xml · derivative · entry 1

GREENE HOWARD E JR · CIK 0000903574 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-059303 · doc4.xml · derivative · entry 1

CAHILL EDWARD L · CIK 0001025665 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-059313 · doc4.xml · nonDerivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,145

F1 · date: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of June 15, 2018 through November 15, 2018. This transaction is also exempt under Rule 16b-3(c).

F2 · date: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 15, 2018.

SEC source: 0001209191-18-059320 · doc4.xml · derivative · entry 1

ROEDER DOUGLAS A · CIK 0001270735 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-059312 · doc4.xml · derivative · entry 1

Valencia Richard P. · CIK 0001743728 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,416

Underlying: Common Stock · 10,416 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-059311 · doc4.xml · derivative · entry 1

TWOMEY CHRISTOPHER J · CIK 0001238935 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-059310 · doc4.xml · nonDerivative · entry 1

Sheridan John F · CIK 0001365369 · EVP, CHIEF OPERATING OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,454

F1 · date: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of June 15, 2018 through November 15, 2018. This transaction is also exempt under Rule 16b-3(c).

F2 · date: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 15, 2018.

SEC source: 0001209191-18-059308 · doc4.xml · nonDerivative · entry 1

Morrison Susan · CIK 0001582970 · EVP & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,745

F1 · date: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of June 15, 2018 through November 15, 2018. This transaction is also exempt under Rule 16b-3(c).

F2 · date: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 15, 2018.

SEC source: 0001209191-18-059306 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,381

F1 · date: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of June 15, 2018 through November 15, 2018. This transaction is also exempt under Rule 16b-3(c).

F2 · date: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 15, 2018.

SEC source: 0001209191-18-059302 · doc4.xml · nonDerivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,765

F1 · date: The reporting person is voluntarily reporting the acquisition of shares of common stock pursuant to the Tandem Diabetes Care, Inc. Amended and Restated 2013 Employee Stock Purchase Plan ("ESPP"), for the ESPP purchase period of June 15, 2018 through November 15, 2018. This transaction is also exempt under Rule 16b-3(c).

F2 · date: In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 15, 2018.

SEC source: 0001209191-18-059304 · doc4.xml · derivative · entry 1

Cohen Fred E · CIK 0001339358 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-059301 · doc4.xml · derivative · entry 1

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,000

Underlying: Common Stock · 25,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in equal monthly installments over 12 months.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-057614 · doc4.xml · nonDerivative · entry 2

BLICKENSTAFF KIM D · CIK 0001238913 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,191,750

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $37.00 and $37.205.

F1 · ownership.nature: Shares are held by the Kim Blickenstaff Revocable Trust.

SEC source: 0001209191-18-057617 · doc4.xml · nonDerivative · entry 1

GREENE HOWARD E JR · CIK 0000903574 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 50,000

F1 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $36.25 and $36.87.

F2 · ownership.nature: The securities are held by the Greene Family Trust.

SEC source: 0001209191-18-057614 · doc4.xml · nonDerivative · entry 1

BLICKENSTAFF KIM D · CIK 0001238913 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 1,370,480

F1 · ownership.nature: Shares are held by the Kim Blickenstaff Revocable Trust.

SEC source: 0001209191-18-057618 · doc4.xml · nonDerivative · entry 1

Valencia Richard P. · CIK 0001743728 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,054

F1 · date: The reporting person has purchased shares of the Company's common stock.

F2 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $37.74 and $37.75.

SEC source: 0001209191-18-057613 · doc4.xml · nonDerivative · entry 4

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 52,000

F5 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $37.66 and $38.68.

F6 · ownership.nature: The securities are held by the Allen Family Trust dated October 12, 1981.

SEC source: 0001209191-18-057613 · doc4.xml · nonDerivative · entry 3

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 18,103

F3 · price: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $37.72 and $37.79.

F4 · ownership.nature: The securities are held by Allen Cornerstone Ventures L.P. The Reporting Person is the managing partner of Allen Cornerstone Ventures L.P. and may be deemed to have indirect beneficial ownership of such securities. The Reporting Person disclaims beneficial ownership of such securities held by Allen Cornerstone Ventures L.P., except to the extent of his proportionate pecuniary interest therein.

F5 · ownership.nature: The price reported reflects the weighted average price per share of multiple transactions with prices per share ranging between $37.66 and $38.68.

SEC source: 0001209191-18-057613 · doc4.xml · nonDerivative · entry 2

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,418

F2 · ownership.nature: The securities are held by the Gammon Children's 2000 Trust FBO Hannah Lee Gammon. The Reporting Person is co-trustee of the Gammon Children's 2000 Trust FBO Hannah Lee Gammon and has shared voting and investment power over the securities held by the Gammon Children's 2000 Trust FBO Hannah Lee Gammon and may be deemed to have indirect beneficial ownership of such securities. The Reporting Person disclaims beneficial ownership of such securities held by the Gammon Children's 2000 Trust FBO Hannah Lee Gammon.

SEC source: 0001209191-18-057613 · doc4.xml · nonDerivative · entry 1

Allen Dick · CIK 0001582779 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,418

F1 · ownership.nature: The securities are held by the Gammon Children's 2000 Trust FBP Jake Allen Gammon. The Reporting Person is co-trustee of the Gammon Children's 2000 Trust FBO Jake Allen Gammon and has shared voting and investment power over the securities held by the Gammon Children's 2000 Trust FBO Jake Allen Gammon and may be deemed to have indirect beneficial ownership of such securities. The Reporting Person disclaims beneficial ownership of such securities held by the Gammon Children's 2000 Trust FBO Jake Allen Gammon.

SEC source: 0001209191-18-045335 · doc4.xml · nonDerivative · entry 1

Valencia Richard P. · CIK 0001743728 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,754

F1 · date: The reporting person has committed to purchase shares in connection with the Company's underwritten registered public offering of common stock.

SEC source: 0001209191-18-038177 · doc4.xml · derivative · entry 1

Vosseller Leigh · CIK 0001726322 · EVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest as to 50% on 6/14/2019 and the remainder in 12 equal monthly installments thereafter

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-038175 · doc4.xml · derivative · entry 1

Sheridan John F · CIK 0001365369 · EVP, CHIEF OPERATING OFFICER

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest as to 50% on 6/14/2019 and the remainder in 12 equal monthly installments thereafter

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-038173 · doc4.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest as to 50% on 6/14/2019 and the remainder in 12 equal monthly installments thereafter

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-038168 · doc4.xml · derivative · entry 1

Morrison Susan · CIK 0001582970 · EVP & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest as to 50% on 6/14/2019 and the remainder in 12 equal monthly installments thereafter

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-038170 · doc4.xml · derivative · entry 1

BLICKENSTAFF KIM D · CIK 0001238913 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 200,000

Underlying: Common Stock · 200,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest as to 50% on 6/14/2019 and the remainder in 12 equal monthly installments thereafter

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-038166 · doc4.xml · derivative · entry 1

BERGER DAVID B · CIK 0001422126 · EVP, GEN. COUNSEL & SECRETARY

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,000

Underlying: Common Stock · 100,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest as to 50% on 6/14/2019 and the remainder in 12 equal monthly installments thereafter

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-038352 · doc4.xml · derivative · entry 1

Valencia Richard P. · CIK 0001743728 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,000

Underlying: Common Stock · 50,000 shares

Expires not disclosed

F1 · security: Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan.

F2 · derivative.exercise_date: All shares subject to the option will vest in 36 equal monthly installments commencing one month following the date of grant.

F3 · derivative.expiration_date: The expiration date for these options is 10 years from the date of grant.

SEC source: 0001209191-18-025269 · doc4.xml · derivative · entry 3

BLICKENSTAFF KIM D · CIK 0001238913 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Common Stock · 285,700 shares

Expires 2018-04-17

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

SEC source: 0001209191-18-025269 · doc4.xml · nonDerivative · entry 2

BLICKENSTAFF KIM D · CIK 0001238913 · Director · PRESIDENT & CEO

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,389,750

F1 · kind: The transaction reflects the cashless exercise of Series B warrants to purchase common stock, at a strike price of $3.50 and a closing market price on the date of exercise of $7.55. The exercise of the Series B warrants is exempt pursuant to Rule 166-3.

F2 · ownership.nature: The securities are held by the Kim Blickenstaff Revocable Trust dated April 15, 2010.