Gasser Elizabeth Anne (CIK 1866283) reported 39 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-18). Recent activity: Buy TNDM (1,097 shares), Sell TNDM (589 shares), Buy TNDM (1,917 shares), Sell TNDM (1,029 shares), Sell TNDM (7,160 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,097 | $0 |
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 589 | $13,382 |
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,917 | $0 |
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 1,029 | $23,379 |
| 2026-06-04 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Sell | 7,160 | $0 |
| 2026-06-04 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 7,160 | $0 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 1,337 | $14,573 |
| 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 | 1,503 | $0 |
| 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 | Sell | 3,000 | $0 |
| 2025-12-08 | TANDEM DIABETES CARE INC (TNDM) | EVP, Chief Strategy Officer | Buy | 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 |
Source: SEC Form 4 filings · as of 2026-08-18