Shannon M. Hansen - 17 Feb 2026 Form 4 Insider Report for TANDEM DIABETES CARE INC (TNDM)

Role
EVP & Chief Legal Officer
Signature
/s/ Shannon M. Hansen
Issuer symbol
TNDM
Transactions as of
17 Feb 2026
Net transactions value
-$23,934
Form type
4
Filing time
19 Feb 2026, 16:33:39 UTC
Previous filing
19 Nov 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Hansen Shannon Marie EVP & Chief Legal Officer 12400 HIGH BLUFF DRIVE, SAN DIEGO /s/ Shannon M. Hansen 19 Feb 2026 0001908267

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TNDM Common Stock Options Exercise $0 +531 +2.5% $0.000000 22,005 17 Feb 2026 Direct
transaction TNDM Common Stock Tax liability $4,150 -219 -1% $18.95 21,786 17 Feb 2026 Direct F1
transaction TNDM Common Stock Options Exercise $0 +1,437 +6.6% $0.000000 23,223 17 Feb 2026 Direct
transaction TNDM Common Stock Tax liability $11,218 -592 -2.5% $18.95 22,631 17 Feb 2026 Direct F1
transaction TNDM Common Stock Options Exercise $0 +1,097 +4.8% $0.000000 23,728 17 Feb 2026 Direct
transaction TNDM Common Stock Tax liability $8,565 -452 -1.9% $18.95 23,276 17 Feb 2026 Direct F1
holding TNDM Common Stock 1,935 17 Feb 2026 Shannon M. Hansen Trust 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 -531 -100% $0.000000 0 17 Feb 2026 Common Stock 531 Direct F3, F4, F5
transaction TNDM Restricted Stock Unit Options Exercise $0 -1,437 -50% $0.000000 1,437 17 Feb 2026 Common Stock 1,437 Direct F6, F7, F8
transaction TNDM Restricted Stock Unit Options Exercise $0 -1,097 -17% $0.000000 5,484 17 Feb 2026 Common Stock 1,097 Direct F7, F9, F10
* 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 The securities are held by the Shannon M. Hansen Trust dated July 8, 2003, of which Shannon M. Hansen is the Trustee.
F3 Awarded on February 15, 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 twenty-five percent (25%) of the total number of shares subject to the RSU on 2/15/2023, and the remaining shares shall vest in twelve (12) 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 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.
F9 Awarded on May 23, 2024 pursuant to the 2023 Plan.
F10 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.