Tregoning Kathleen (CIK 1830764) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-25). Recent activity: Buy SPRO (10,000 shares), Buy SPRO (20,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-25 | Spero Therapeutics, Inc. (SPRO) | Director | Buy | 10,000 | $0 |
| 2025-06-16 | Spero Therapeutics, Inc. (SPRO) | Director | Buy | 20,000 | $0 |
Source: SEC Form 4 filings · as of 2026-06-25