Niederhuber John (CIK 1501240) reported 2 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-10). Recent activity: Buy APVO (400 shares), Buy APVO (1 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-10 | Aptevo Therapeutics Inc. (APVO) | Director | Buy | 400 | $0 |
| 2025-07-21 | Aptevo Therapeutics Inc. (APVO) | Director | Buy | 1 | $0 |
Source: SEC Form 4 filings · as of 2026-08-10