Leigh Vosseller - Aug 8, 2025 Form 4 Insider Report for TANDEM DIABETES CARE INC (TNDM)

Role
EVP & CHIEF FINANCIAL OFFICER
Signature
/s/ Rachel Malina, Attorney-in-Fact for Leigh A. Vosseller
Stock symbol
TNDM
Transactions as of
Aug 8, 2025
Transactions value $
$149,404
Form type
4
Date filed
8/11/2025, 05:18 PM
Previous filing
Jun 5, 2025
Next filing
Aug 19, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Vosseller Leigh EVP & CHIEF FINANCIAL OFFICER 12400 HIGH BLUFF DRIVE, SAN DIEGO /s/ Rachel Malina, Attorney-in-Fact for Leigh A. Vosseller 2025-08-11 0001726322

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction TNDM Common Stock Purchase $149K +13.7K +115.68% $10.89 25.6K Aug 8, 2025 Leigh A. Vosseller Trust F1, F2
holding TNDM Common Stock 33.8K Aug 8, 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This transaction was executed in multiple trades at prices ranging from $10.86 to $10.90 per share. The reported price reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
F2 The securities are held by the Leigh A. Vosseller Trust dated January 17, 2010, of which Leigh Vosseller is the Trustee.