Diamond Howard (CIK 1671358) reported 27 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-02-10). Recent activity: Buy ULCC (18,335 shares), Sell ULCC (8,021 shares), Buy ULCC (11,328 shares), Sell ULCC (4,956 shares), Buy ULCC (6,442 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-02-10 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 18,335 | $0 |
| 2026-02-10 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 8,021 | $45,319 |
| 2026-02-10 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 11,328 | $0 |
| 2026-02-10 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 4,956 | $32,313 |
| 2026-02-10 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 6,442 | $0 |
| 2026-02-10 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 2,818 | $18,373 |
| 2026-02-09 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 3,224 | $0 |
| 2026-02-09 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 1,410 | $7,966 |
| 2026-02-03 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 45,512 | $0 |
| 2026-02-03 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 19,911 | $92,387 |
| 2025-10-28 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 62,934 | $0 |
| 2025-10-28 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 27,533 | $114,262 |
| 2025-09-09 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 35,401 | $194,706 |
| 2025-09-04 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 26,306 | $149,155 |
| 2025-09-04 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 31,503 | $182,717 |
| 2025-03-10 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 8,481 | $60,300 |
| 2025-02-24 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 87,830 | $770,269 |
| 2025-02-20 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 326,581 | $2.9M |
| 2025-02-20 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 43,876 | $403,659 |
| 2025-02-11 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 11,328 | $0 |
| 2025-02-11 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 4,005 | $37,407 |
| 2025-02-11 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 11,331 | $0 |
| 2025-02-11 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 3,257 | $30,420 |
| 2025-02-04 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Buy | 45,511 | $0 |
| 2025-02-04 | Frontier Group Holdings, Inc. (ULCC) | EVP, Legal & Corporate Affairs | Sell | 14,008 | $118,087 |
Source: SEC Form 4 filings · as of 2026-02-10