Carpenter Rick (CIK 1513889) reported 39 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-18). Recent activity: Buy TNDM (897 shares), Sell TNDM (457 shares), Buy TNDM (1,610 shares), Sell TNDM (820 shares), Buy TNDM (1,437 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Buy | 897 | $0 |
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Sell | 457 | $10,383 |
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Buy | 1,610 | $0 |
| 2026-08-18 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Sell | 820 | $18,630 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Buy | 1,437 | $0 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Sell | 732 | $9,384 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Buy | 898 | $0 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Sell | 457 | $5,859 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Buy | 6,439 | $0 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Sell | 3,277 | $42,011 |
| 2026-05-19 | TANDEM DIABETES CARE INC (TNDM) | EVP & Chief Technology Officer | Buy | 1,336 | $14,562 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Sell | 808 | $15,312 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 1,437 | $0 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 897 | $0 |
| 2026-02-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Sell | 504 | $9,551 |
| 2025-12-17 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 406 | $0 |
| 2025-12-17 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Sell | 207 | $4,577 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 339 | $5,285 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 1,437 | $0 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Sell | 730 | $13,585 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 897 | $0 |
| 2025-11-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Sell | 456 | $8,486 |
| 2025-09-16 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 406 | $0 |
| 2025-09-16 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Sell | 207 | $2,503 |
| 2025-08-19 | TANDEM DIABETES CARE INC (TNDM) | Chief Technology Officer | Buy | 1,437 | $0 |
Source: SEC Form 4 filings · as of 2026-08-18