Aptevo Therapeutics's top three insider shareholders as of September 29, 2026 are Marvin L White (Executive Chair, 1.26K shares), Grady Iii Grant (Board Of Directors, 1.15K shares), Jeffrey G. Lamothe (President And Ceo, 961 shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Marvin L White | Executive Chair | 1,261 | 0 | 1,261 | 18.7% | 10 Aug, 2026 |
| 2 | Grady Iii Grant | Board Of Directors | 1,150 | 0 | 1,150 | 17.1% | 10 Aug, 2026 |
| 3 | Jeffrey G. Lamothe | President And Ceo | 961 | 0 | 961 | 14.3% | 10 Aug, 2026 |
| 4 | Daphne Taylor | Svp, Cfo | 638 | 0 | 638 | 9.5% | 10 Aug, 2026 |
| 5 | Soyoung Kwon | Svp, Gc, Bd Corp Affairs | 638 | 0 | 638 | 9.5% | 10 Aug, 2026 |
| 6 | Dirk Huebner | Svp, Cmo | 482 | 0 | 482 | 7.1% | 10 Aug, 2026 |
| 7 | John Niederhuber | Director | 400 | 0 | 400 | 5.9% | 10 Aug, 2026 |
| 8 | Daniel Abdun-Nabi | Board Of Directors | 400 | 0 | 400 | 5.9% | 10 Aug, 2026 |
| 9 | Zsolt Harsanyi | Board Of Directors | 400 | 0 | 400 | 5.9% | 10 Aug, 2026 |
| 10 | Barbara Lopez Kunz | Board Of Directors | 400 | 0 | 400 | 5.9% | 10 Aug, 2026 |
| 11 | Fuad El-Hibri | Director | 0 | 12 | 12 | 0.2% | 07 Dec, 2021 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 06 Aug, 2026 | Dirk Huebner | Svp, Cmo | Acquired M | 638 | — | — | 638 | Direct |
| 06 Aug, 2026 | Soyoung Kwon | Svp, Gc, Bd Corp Affairs | Acquired M | 638 | — | — | 638 | Direct |
| 06 Aug, 2026 | Daphne Taylor | Svp, Cfo | Acquired M | 638 | — | — | 638 | Direct |
| 06 Aug, 2026 | Grady Iii Grant | Director | Acquired M | 400 | — | — | 1,150 | Direct |
| 06 Aug, 2026 | Barbara Lopez Kunz | Director | Acquired M | 400 | — | — | 400 | Direct |
| 06 Aug, 2026 | Jeffrey G. Lamothe | President And Ceo | Acquired M | 961 | — | — | 961 | Direct |
| 06 Aug, 2026 | Daniel Abdun-Nabi | Director | Acquired M | 400 | — | — | 400 | Direct |
| 17 Jul, 2026 | Marvin L White | Executive Chair | Acquired M | 1 | — | — | 1 | Direct |
| 06 Aug, 2026 | John Niederhuber | Director | Acquired M | 400 | — | — | 400 | Direct |
| 06 Aug, 2026 | Zsolt Harsanyi | Director | Acquired M | 400 | — | — | 400 | Direct |
| 06 Aug, 2026 | Zsolt Harsanyi | Director | Disposed M | 400 | $0.00 | $0 | 0 | Direct |
| 06 Aug, 2026 | Daniel Abdun-Nabi | Director | Disposed M | 400 | $0.00 | $0 | 0 | Direct |
| 06 Aug, 2026 | Soyoung Kwon | Svp, Gc, Bd Corp Affairs | Disposed M | 638 | $0.00 | $0 | 0 | Direct |
| 06 Aug, 2026 | John Niederhuber | Director | Disposed M | 400 | $0.00 | $0 | 0 | Direct |
| 06 Aug, 2026 | Grady Iii Grant | Director | Disposed M | 400 | $0.00 | $0 | 0 | Direct |
| 06 Aug, 2026 | Dirk Huebner | Svp, Cmo | Disposed F | 156 | $4.07 | $635 | 482 | Direct |
| 06 Aug, 2026 | Daphne Taylor | Svp, Cfo | Disposed M | 638 | $0.00 | $0 | 0 | Direct |
| 06 Aug, 2026 | Marvin L White | Executive Chair | Acquired M | 1,666 | — | — | 1,667 | Direct |
| 06 Aug, 2026 | Jeffrey G. Lamothe | President And Ceo | Disposed M | 961 | $0.00 | $0 | 0 | Direct |
| 06 Aug, 2026 | Barbara Lopez Kunz | Director | Disposed M | 400 | $0.00 | $0 | 0 | Direct |