Elizabeth A. Gasser - 04 Dec 2025 Form 4 Insider Report for TANDEM DIABETES CARE INC (TNDM)

Role
EVP, Chief Strategy Officer
Signature
/s/ Shannon M. Hansen, Attorney-in-Fact for Elizabeth A. Gasser
Issuer symbol
TNDM
Transactions as of
04 Dec 2025
Net transactions value
$0
Form type
4
Filing time
08 Dec 2025, 16:02:19 UTC
Previous filing
19 Nov 2025
Next filing
19 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gasser Elizabeth Anne EVP, Chief Strategy Officer 12400 HIGH BLUFF DRIVE, SAN DIEGO /s/ Shannon M. Hansen, Attorney-in-Fact for Elizabeth A. Gasser 08 Dec 2025 0001866283

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TNDM Common Stock Other $0 -3,000 -100% $0.000000 0 04 Dec 2025 Direct F1
transaction TNDM Common Stock Other $0 +3,000 +13% $0.000000 25,949 04 Dec 2025 See Footnote F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reported transaction was a transfer of shares from Elizabeth A. Gasser's direct holdings to The Gasser Family Trust.
F2 The securities are held by The Gasser Family Trust dated September 1, 2011, of which Elizabeth A. Gasser is a co-trustee.