Gasser Elizabeth Anne (CIK 1866283) reported 43 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-19). Recent activity: Buy TNDM (1,503 shares), Sell TNDM (807 shares), Buy TNDM (1,097 shares), Sell TNDM (589 shares), Buy TNDM (7,667 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,503 | $0 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 807 | $10,346 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,097 | $0 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 589 | $7,551 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 7,667 | $0 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 4,114 | $52,741 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,337 | $14,573 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,503 | $0 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 887 | $16,809 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,097 | $0 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 647 | $12,261 |
| 2025-12-08 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 3,000 | $0 |
| 2025-12-08 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 3,000 | $0 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 586 | $9,136 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,503 | $0 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 805 | $14,981 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,096 | $0 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 587 | $10,924 |
| 2025-08-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,503 | $0 |
| 2025-08-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 805 | $8,710 |
| 2025-08-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,097 | $0 |
| 2025-08-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 588 | $6,362 |
| 2025-06-02 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 11,200 | $0 |
| 2025-06-02 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 11,200 | $0 |
| 2025-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,147 | $17,939 |
Source: SEC Form 4 filings · as of 2026-05-19