Susan Morrison - Feb 27, 2023 Form 4 Insider Report for TANDEM DIABETES CARE INC (TNDM)

Role: EVP & Chief Admin. Officer
Signature: /s/ Rachel Malina, Attorney-in-Fact for Susan M. Morrison
Stock symbol: TNDM
Transactions as of: Feb 27, 2023
Transactions value $: -$4,950
Form type: 4
Date filed: 3/1/2023, 05:29 PM
Previous filing: Feb 17, 2023
Next filing: May 17, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TNDM	Common Stock	Options Exercise	$0	+407	+3.85%	$0.00	11K	Feb 27, 2023	Direct
transaction	TNDM	Common Stock	Tax liability	-$4.95K	-138	-1.26%	$35.87	10.9K	Feb 27, 2023	Direct	F1

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	+407	+25.05%	$0.00	2.03K	Feb 27, 2023	Common Stock	407		Direct	F2, F3, F4

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

Explanation of Responses:

Id	Content
F1	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.
F2	Granted pursuant to the Tandem Diabetes Care, Inc. 2013 Stock Incentive Plan (the "2013 Plan").
F3	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	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.