| 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 | 11 Aug 2025 | 0001726322 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | TNDM | Common Stock | Purchase | $149,404 | +13,720 | +116% | $10.89 | 25,580 | 08 Aug 2025 | Leigh A. Vosseller Trust | F1, F2 |
| holding | TNDM | Common Stock | 33,798 | 08 Aug 2025 | Direct |
| 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. |