Tandem Diabetes Care (TNDM) EVP details RSU vesting and tax share withholding

Rhea-AI Filing Summary

Tandem Diabetes Care executive Elizabeth Anne Gasser reported routine equity compensation activity. On February 17, 2026, she acquired 1,503 and 1,097 shares of common stock upon vesting and conversion of restricted stock units at a stated price of $0.00 per share.

To cover tax withholding on these vestings, 887 and 647 shares of common stock were withheld by the company at $18.95 per share; the footnotes state that no shares were sold in the market. After these transactions, she holds additional common stock indirectly, including 25,949 shares held by The Gasser Family Trust dated September 1, 2011, where she is a co‑trustee.

Insider Trade Summary

2,600 shares exercised/converted

Mixed 7 txns

Insider Gasser Elizabeth Anne

Role EVP, Chief Strategy Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Unit	1,503	$0.00	--
Exercise	Restricted Stock Unit	1,097	$0.00	--
Exercise	Common Stock	1,503	$0.00	--
Tax Withholding	Common Stock	887	$18.95	$17K
Exercise	Common Stock	1,097	$0.00	--
Tax Withholding	Common Stock	647	$18.95	$12K
holding	Common Stock	--	--	--

Holdings After Transaction: Restricted Stock Unit — 1,503 shares (Direct); Common Stock — 1,503 shares (Direct); Common Stock — 25,949 shares (Indirect, See Footnote)

Footnotes (1)

1. 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. The securities are held by The Gasser Family Trust dated September 1, 2011, of which Elizabeth A. Gasser is a co-trustee. Awarded on May 25, 2023 pursuant to the Tandem Diabetes Care Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan). 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. RSU vest as to thirty-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. Awarded on May 23, 2024 pursuant to the 2023 Plan. RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2025, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Gasser Elizabeth Anne

(Last) (First) (Middle)

12400 HIGH BLUFF DRIVE

(Street)

SAN DIEGO CA 92130

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TANDEM DIABETES CARE INC [ TNDM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Strategy Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/17/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/17/2026		M		1,503	A	$0	1,503	D
Common Stock	02/17/2026		F(1)		887	D	$18.95	616	D
Common Stock	02/17/2026		M		1,097	A	$0	1,713	D
Common Stock	02/17/2026		F(1)		647	D	$18.95	1,066	D
Common Stock								25,949	I	See Footnote(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit(3)	(4)	02/17/2026		M			1,503	(5)	(5)	Common Stock	1,503	$0	1,503	D
Restricted Stock Unit(6)	(4)	02/17/2026		M			1,097	(7)	(7)	Common Stock	1,097	$0	5,484	D

Explanation of Responses:

1. 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.

2. The securities are held by The Gasser Family Trust dated September 1, 2011, of which Elizabeth A. Gasser is a co-trustee.

3. Awarded on May 25, 2023 pursuant to the Tandem Diabetes Care Inc. 2023 Long-Term Incentive Plan, as amended, and agreements related thereto (the 2023 Plan).

4. 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.

5. RSU vest as to thirty-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.

6. Awarded on May 23, 2024 pursuant to the 2023 Plan.

7. RSU vest as to thirty-three percent (33%) of the total number of shares subject to the RSU on 5/15/2025, and the remaining shares shall vest in eight (8) equal quarterly installments thereafter.

Remarks:

	/s/ Shannon M. Hansen, Attorney-in-Fact for Elizabeth A. Gasser	02/19/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Elizabeth Gasser report in this Tandem Diabetes Care (TNDM) Form 4?

Elizabeth Gasser reported routine equity compensation activity, showing restricted stock units converting into common shares and related tax-withholding transactions. The filing details RSU vesting, share issuances at $0.00 per share, and shares withheld by Tandem Diabetes Care to satisfy tax obligations.

Were any Tandem Diabetes Care (TNDM) shares sold on the market in this Form 4?

No market sales occurred in this Form 4. Footnotes explain that 887 and 647 common shares were withheld by Tandem Diabetes Care solely to satisfy tax withholding on RSU vesting, explicitly stating that no shares were sold as part of these tax-withholding transactions.

How many Tandem Diabetes Care (TNDM) shares were involved in Elizabeth Gasser’s RSU vesting?

The filing shows RSUs converting into 1,503 and 1,097 common shares on February 17, 2026. These conversions occurred at a stated price of $0.00 per share, reflecting equity awards under Tandem Diabetes Care’s 2023 Long-Term Incentive Plan and related agreements.

What tax-withholding transactions are disclosed for Tandem Diabetes Care (TNDM) in this Form 4?

To cover tax obligations on RSU vesting, the company withheld 887 and 647 common shares at $18.95 per share. According to the footnotes, these withholdings represent payment of tax liability by delivering shares, with no open-market sales taking place.

How many Tandem Diabetes Care (TNDM) shares are held indirectly through The Gasser Family Trust?

The Form 4 reports 25,949 Tandem Diabetes Care common shares held indirectly through The Gasser Family Trust dated September 1, 2011. A footnote states that Elizabeth A. Gasser is a co‑trustee of this trust, which holds these shares on an indirect basis.

What do the footnotes say about Elizabeth Gasser’s RSU awards at Tandem Diabetes Care (TNDM)?

Footnotes state RSUs were awarded under the 2023 Long-Term Incentive Plan, with separate grants on May 25, 2023 and May 23, 2024. Each RSU represents a contingent right to one common share or cash, vesting one‑third initially and the remainder in eight quarterly installments.