As of August 29, 2026, Celldex Therapeutics's top three insider holders are Samuel Bates Martin (Svp And Cfo, 32.94K shares), Samuel Bates Martin (Svp And Cfo, 32.94K shares), Freddy A. Jimenez (Svp General Counsel, 30.80K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Samuel Bates Martin | Svp And Cfo | 32,942 | 0 | 32,942 | 21.2% | 06 Jan, 2026 |
| 2 | Freddy A. Jimenez | Svp General Counsel | 30,796 | 0 | 30,796 | 19.8% | 08 Dec, 2025 |
| 3 | Richard M. Wright | Sr. Vp Cco | 20,833 | 0 | 20,833 | 13.4% | 17 Nov, 2025 |
| 4 | Ronald Pepin | Sr. Vp Cbo | 20,097 | 0 | 20,097 | 12.9% | 17 Dec, 2025 |
| 5 | Diane C. Young | Svp, Chief Medical Officer | 17,115 | 0 | 17,115 | 11.0% | 13 Jun, 2024 |
| 6 | Margo Heath-Chiozzi | Svp Of Regulatory Affairs | 13,383 | 0 | 13,383 | 8.6% | 05 Jun, 2024 |
| 7 | Elizabeth Crowley | Sr. Vp Cpdo | 9,074 | 0 | 9,074 | 5.8% | 18 Jun, 2024 |
| 8 | Tibor Keler | Executive Vp Cso | 7,357 | 0 | 7,357 | 4.7% | 09 Dec, 2022 |
| 9 | James J Marino | Director | 2,204 | 0 | 2,204 | 1.4% | 20 Nov, 2024 |
| 10 | Sarah Cavanaugh | Svp Of Corp Affairs Admin. | 1,860 | 0 | 1,860 | 1.2% | 03 Jun, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 25 Jun, 2026 | Garry Arthur Neil | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 25 Jun, 2026 | Tibor Keler | Executive Vp Cso | Acquired A | 115,000 | $0.00 | $0 | 115,000 | Direct |
| 25 Jun, 2026 | Denice Torres | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 25 Jun, 2026 | Cheryl Cohen | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 25 Jun, 2026 | Teri L Lawver | Svp Chief Commercial Officer | Acquired A | 90,000 | $0.00 | $0 | 90,000 | Direct |
| 25 Jun, 2026 | Herbert J Conrad | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 25 Jun, 2026 | Keith L Brownlie | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 25 Jun, 2026 | Anthony S Marucci | President Ceo | Acquired A | 375,000 | $0.00 | $0 | 375,000 | Direct |
| 25 Jun, 2026 | Elizabeth Crowley | Sr. Vp Cpdo | Acquired A | 100,000 | $0.00 | $0 | 100,000 | Direct |
| 25 Jun, 2026 | Freddy A. Jimenez | Svp General Counsel | Acquired A | 93,000 | $0.00 | $0 | 93,000 | Direct |
| 25 Jun, 2026 | Sarah Cavanaugh | Svp Of Corp Affairs Admin. | Acquired A | 95,000 | $0.00 | $0 | 95,000 | Direct |
| 25 Jun, 2026 | Samuel Bates Martin | Svp And Cfo | Acquired A | 93,000 | $0.00 | $0 | 93,000 | Direct |
| 25 Jun, 2026 | Ronald Pepin | Sr. Vp Cbo | Acquired A | 20,000 | $0.00 | $0 | 20,000 | Direct |
| 25 Jun, 2026 | James J Marino | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 25 Jun, 2026 | Margo Heath-Chiozzi | Svp Of Regulatory Affairs | Acquired A | 95,000 | $0.00 | $0 | 95,000 | Direct |
| 25 Jun, 2026 | Diane C. Young | Svp, Chief Medical Officer | Acquired A | 57,000 | $0.00 | $0 | 57,000 | Direct |
| 25 Jun, 2026 | Harry Jr Penner | Director | Acquired A | 26,000 | $0.00 | $0 | 26,000 | Direct |
| 02 Jan, 2026 | Samuel Bates Martin | Svp And Cfo | Acquired M | 4,817 | $10.38 | $50.00K | 32,942 | Direct |
| 02 Jan, 2026 | Samuel Bates Martin | Svp And Cfo | Acquired M | 4,817 | $10.38 | $50.00K | 32,942 | Direct |
| 02 Jan, 2026 | Samuel Bates Martin | Svp And Cfo | Acquired M | 4,817 | $10.38 | $50.00K | 32,942 | Direct |