SELLAS Life Sciences's top three insider shareholders as of August 29, 2026 are Angelos M. Stergiou (President And Ceo, 1.76Mn shares), Angelos M. Stergiou (President And Ceo, 686.97K shares), Dragan Cicic (Svp, Chief Development Officer, 557.80K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Angelos M. Stergiou | President And Ceo | 1,976,604 | 0 | 1,976,604 | 51.9% | 18 Jun, 2026 |
| 2 | John Thomas Burns | Cfo | 609,254 | 0 | 609,254 | 16.0% | 09 Jan, 2026 |
| 3 | Dragan Cicic | Svp, Chief Development Officer | 557,805 | 0 | 557,805 | 14.6% | 09 Jan, 2026 |
| 4 | Barbara A Wood | Evp, Gen. Counsel, Corp. Sec. | 199,450 | 0 | 199,450 | 5.2% | 24 Jan, 2024 |
| 5 | Katherine Bach Kalin | Director | 154,400 | 0 | 154,400 | 4.1% | 09 Jan, 2026 |
| 6 | Jane Wasman | Director | 92,900 | 0 | 92,900 | 2.4% | 09 Jan, 2026 |
| 7 | Nostrand Robert L Van | Director | 82,900 | 0 | 82,900 | 2.2% | 09 Jan, 2026 |
| 8 | David A Scheinberg | Director | 73,082 | 0 | 73,082 | 1.9% | 09 Jan, 2026 |
| 9 | Robert Francomano | Chief Commercial Officer | 61,836 | 0 | 61,836 | 1.6% | 24 Jan, 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 |
|---|---|---|---|---|---|---|---|---|
| 16 Jun, 2026 | Angelos M. Stergiou | President And Ceo | Acquired A | 1,065,000 | $0.00 | $0 | 1,759,183 | Direct |
| 07 Jan, 2026 | Nostrand Robert L Van | Director | Acquired A | 50,000 | $0.00 | $0 | 82,900 | Direct |
| 07 Jan, 2026 | Jane Wasman | Director | Acquired A | 50,000 | $0.00 | $0 | 92,900 | Direct |
| 07 Jan, 2026 | John Thomas Burns | Cfo | Acquired A | 300,000 | $0.00 | $0 | 554,327 | Direct |
| 07 Jan, 2026 | Jane Wasman | Director | Acquired A | 50,000 | $0.00 | $0 | 92,900 | Direct |
| 07 Jan, 2026 | Katherine Bach Kalin | Director | Acquired A | 50,000 | $0.00 | $0 | 154,400 | Direct |
| 07 Jan, 2026 | Dragan Cicic | Svp, Chief Development Officer | Acquired A | 300,000 | $0.00 | $0 | 557,805 | Direct |
| 07 Jan, 2026 | David A Scheinberg | Director | Acquired A | 50,000 | $0.00 | $0 | 73,082 | Direct |
| 07 Jan, 2026 | Jane Wasman | Director | Acquired A | 50,000 | $0.00 | $0 | 92,900 | Direct |
| 07 Jan, 2026 | Jane Wasman | Director | Acquired A | 50,000 | $0.00 | $0 | 92,900 | Direct |
| 03 Dec, 2025 | Angelos M. Stergiou | President And Ceo | Disposed J | 187,066 | $1.50 | $280.60K | 686,966 | Direct |
| 03 Dec, 2025 | Angelos M. Stergiou | President And Ceo | Disposed J | 187,066 | $1.50 | $280.60K | 686,966 | Direct |
| 03 Dec, 2025 | John Thomas Burns | Cfo | Disposed J | 58,592 | $1.50 | $87.89K | 254,327 | Direct |
| 03 Dec, 2025 | Dragan Cicic | Svp, Chief Development Officer | Disposed J | 63,800 | $1.50 | $95.70K | 257,805 | Direct |
| 03 Dec, 2025 | Angelos M. Stergiou | President And Ceo | Disposed J | 187,066 | $1.50 | $280.60K | 686,966 | Direct |
| 03 Dec, 2025 | Angelos M. Stergiou | President And Ceo | Disposed J | 187,066 | $1.50 | $280.60K | 686,966 | Direct |
| 19 Nov, 2025 | Katherine Bach Kalin | Director | Acquired P | 63,400 | $1.59 | $100.81K | 104,400 | Direct |
| 12 Jun, 2025 | Nostrand Robert L Van | Director | Acquired P | 10,000 | $1.48 | $14.80K | 20,400 | Direct |
| 30 May, 2025 | Jane Wasman | Director | Acquired P | 20,000 | $1.69 | $33.80K | 30,400 | Direct |
| 30 May, 2025 | Jane Wasman | Director | Acquired P | 20,000 | $1.69 | $33.80K | 30,400 | Direct |