Rick Carpenter - May 15, 2024 Form 4 Insider Report for TANDEM DIABETES CARE INC (TNDM)

Role: Chief Technology Officer
Signature: /s/ Rachel Malina, Attorney-in-Fact for Rick A. Carpenter
Stock symbol: TNDM
Transactions as of: May 15, 2024
Transactions value $: -$94,796
Form type: 4
Date filed: 5/17/2024, 05:47 PM
Previous filing: Mar 19, 2024
Next filing: May 28, 2024

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TNDM	Common Stock	Award	$12.4K	+796	+13.05%	$15.64	6.9K	May 15, 2024	Direct	F1
transaction	TNDM	Common Stock	Options Exercise	$0	+595	+8.63%	$0.00	7.49K	May 15, 2024	Direct
transaction	TNDM	Common Stock	Tax liability	-$10.1K	-213	-2.84%	$47.37	7.28K	May 15, 2024	Direct	F2
transaction	TNDM	Common Stock	Options Exercise	$0	+5.75K	+78.98%	$0.00	13K	May 15, 2024	Direct
transaction	TNDM	Common Stock	Tax liability	-$97.2K	-2.05K	-15.75%	$47.37	11K	May 15, 2024	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TNDM	Restricted Stock Unit	Options Exercise	$0	-595	-19.98%	$0.00	2.38K	May 15, 2024	Common Stock	595		Direct	F3, F4, F5
transaction	TNDM	Restricted Stock Unit	Options Exercise	$0	-5.75K	-33.33%	$0.00	11.5K	May 15, 2024	Common Stock	5.75K		Direct	F6, F7, F8

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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 November 16, 2023 through May 15, 2024. This transaction is also exempt under Rule 16b-3(c).
F2	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.
F3	Awarded on May 25, 2022 pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan, as amended, and the agreements related thereto (the 2013 Plan).
F4	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	RSU vest as to thiry-three percent (33%) of the total number of shares subject to the RSU on 5/15/2023, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.
F6	Awarded on May 25, 2023 pursuant to the Tandem Diabetes Care, Inc. 2023 Long-Term Incentive Plan (the 2023 Plan).
F7	Each RSU represents a contingent right to receive either one share of common stock of the Issuer or cash in lieu thereof, at the Issuer's discretion, in accordance with the terms of the 2023 Plan.
F8	RSU vest as to thiry-three percent (33%) of the total number of shares subject to the RSU on 5/15/2024, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.