SLS
Sellas Life Sciences Group Inc
NASDAQ: SLS · HEALTHCARE · BIOTECHNOLOGY
$5.25
+10.38% today
Updated 2026-06-04
Market cap
$1.52B
P/E ratio
—
P/S ratio
26.90x
EPS (TTM)
$-0.23
Dividend yield
—
52W range
$1 – $10
Volume
7.6M
Sellas Life Sciences Group Inc (SLS) Insider transactions
Net insider activity
Net buying (4,194,655 shares)
Buy transactions
84
Sell transactions
16
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-01-07 | WASMAN, JANE | Director | Buy | 50,000 | — | — |
| 2026-01-07 | VARIAN, JOHN | Director | Buy | 50,000 | — | — |
| 2026-01-07 | VAN, NOSTRAND ROBERT L | Director | Buy | 50,000 | — | — |
| 2026-01-07 | SCHEINBERG, DAVID A | Director | Buy | 50,000 | — | — |
| 2026-01-07 | KALIN, KATHERINE BACH | Director | Buy | 50,000 | — | — |
| 2026-01-07 | CICIC, DRAGAN | SVP, Chief Development Officer | Buy | 300,000 | — | — |
| 2026-01-07 | BURNS, JOHN THOMAS | CFO | Buy | 300,000 | — | — |
| 2025-12-03 | STERGIOU, ANGELOS M. | Director, President and CEO | Sale | 187,066 | $1.50 | $280599.00 |
| 2025-12-03 | CICIC, DRAGAN | SVP, Chief Development Officer | Sale | 63,800 | $1.50 | $95700.00 |
| 2025-12-03 | BURNS, JOHN THOMAS | CFO | Sale | 58,592 | $1.50 | $87888.00 |
| 2025-11-19 | KALIN, KATHERINE BACH | Director | Buy | 63,400 | $1.59 | $100806.00 |
| 2025-06-12 | VAN, NOSTRAND ROBERT L | Director | Buy | 10,000 | $1.48 | $14800.00 |
| 2025-05-30 | WASMAN, JANE | Director | Buy | 20,000 | $1.69 | $33800.00 |
| 2025-05-22 | KALIN, KATHERINE BACH | Director | Buy | 20,000 | $1.80 | $36000.00 |
| 2025-01-10 | WASMAN, JANE | Director | Buy | 18,500 | — | — |
| 2025-01-10 | WASMAN, JANE | Director | Buy | 12,500 | — | — |
| 2025-01-10 | VARIAN, JOHN | Director | Buy | 18,500 | — | — |
| 2025-01-10 | VARIAN, JOHN | Director | Buy | 12,500 | — | — |
| 2025-01-10 | VAN, NOSTRAND ROBERT L | Director | Buy | 18,500 | — | — |
| 2025-01-10 | VAN, NOSTRAND ROBERT L | Director | Buy | 12,500 | — | — |
| 2025-01-10 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 385,750 | — | — |
| 2025-01-10 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 257,000 | — | — |
| 2025-01-10 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 243,900 | — | — |
| 2025-01-10 | SCHEINBERG, DAVID A | Director | Buy | 18,500 | — | — |
| 2025-01-10 | SCHEINBERG, DAVID A | Director | Buy | 12,500 | — | — |
| 2025-01-10 | KALIN, KATHERINE BACH | Director | Buy | 18,500 | — | — |
| 2025-01-10 | KALIN, KATHERINE BACH | Director | Buy | 12,500 | — | — |
| 2025-01-10 | CICIC, DRAGAN | SVP, Chief Development Officer | Buy | 169,500 | — | — |
| 2025-01-10 | CICIC, DRAGAN | SVP, Chief Development Officer | Buy | 113,000 | — | — |
| 2025-01-10 | CICIC, DRAGAN | SVP, Chief Development Officer | Buy | 81,300 | — | — |
| 2025-01-10 | BURNS, JOHN THOMAS | CFO | Buy | 169,500 | — | — |
| 2025-01-10 | BURNS, JOHN THOMAS | CFO | Buy | 113,000 | — | — |
| 2025-01-10 | BURNS, JOHN THOMAS | CFO | Buy | 81,300 | — | — |
| 2024-12-04 | STERGIOU, ANGELOS M. | Director, President and CEO | Sale | 28,289 | $1.13 | $31966.57 |
| 2024-12-04 | CICIC, DRAGAN | SVP, Chief Development Officer | Sale | 8,256 | $1.13 | $9329.28 |
| 2024-12-04 | BURNS, JOHN THOMAS | CFO | Sale | 7,165 | $1.13 | $8096.45 |
| 2024-01-22 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 50,000 | — | — |
| 2024-01-22 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 35,000 | — | — |
| 2024-01-22 | WASMAN, JANE | Director | Buy | 10,000 | — | — |
| 2024-01-22 | WASMAN, JANE | Director | Buy | 6,000 | — | — |
| 2024-01-22 | VARIAN, JOHN | Director | Buy | 10,000 | — | — |
| 2024-01-22 | VARIAN, JOHN | Director | Buy | 6,000 | — | — |
| 2024-01-22 | VAN, NOSTRAND ROBERT L | Director | Buy | 10,000 | — | — |
| 2024-01-22 | VAN, NOSTRAND ROBERT L | Director | Buy | 6,000 | — | — |
| 2024-01-22 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 238,500 | — | — |
| 2024-01-22 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 159,000 | — | — |
| 2024-01-22 | SCHEINBERG, DAVID A | Director | Buy | 10,000 | — | — |
| 2024-01-22 | SCHEINBERG, DAVID A | Director | Buy | 6,000 | — | — |
| 2024-01-22 | KALIN, KATHERINE BACH | Director | Buy | 10,000 | — | — |
| 2024-01-22 | KALIN, KATHERINE BACH | Director | Buy | 6,000 | — | — |
| 2024-01-22 | FRANCOMANO, ROBERT | Chief Commercial Officer | Buy | 30,000 | — | — |
| 2024-01-22 | FRANCOMANO, ROBERT | Chief Commercial Officer | Buy | 20,000 | — | — |
| 2024-01-22 | BURNS, JOHN THOMAS | CFO | Buy | 75,000 | — | — |
| 2024-01-22 | BURNS, JOHN THOMAS | CFO | Buy | 47,000 | — | — |
| 2023-12-06 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Sale | 4,119 | $1.08 | $4448.52 |
| 2023-12-06 | STERGIOU, ANGELOS M. | Director, President and CEO | Sale | 12,268 | $1.08 | $13249.44 |
| 2023-12-06 | FRANCOMANO, ROBERT | Chief Commercial Officer | Sale | 1,082 | $1.08 | $1168.56 |
| 2023-12-06 | BURNS, JOHN THOMAS | CFO | Sale | 2,929 | $1.08 | $3163.32 |
| 2023-02-02 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 80,000 | — | — |
| 2023-02-02 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 20,000 | — | — |
| 2023-02-02 | WASMAN, JANE | Director | Buy | 9,500 | — | — |
| 2023-02-02 | WASMAN, JANE | Director | Buy | 2,500 | — | — |
| 2023-02-02 | VARIAN, JOHN | Director | Buy | 9,500 | — | — |
| 2023-02-02 | VARIAN, JOHN | Director | Buy | 2,500 | — | — |
| 2023-02-02 | VAN, NOSTRAND ROBERT L | Director | Buy | 9,500 | — | — |
| 2023-02-02 | VAN, NOSTRAND ROBERT L | Director | Buy | 2,500 | — | — |
| 2023-02-02 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 217,500 | — | — |
| 2023-02-02 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 58,000 | — | — |
| 2023-02-02 | SCHEINBERG, DAVID A | Director | Buy | 9,500 | — | — |
| 2023-02-02 | SCHEINBERG, DAVID A | Director | Buy | 2,500 | — | — |
| 2023-02-02 | KALIN, KATHERINE BACH | Director | Buy | 9,500 | — | — |
| 2023-02-02 | KALIN, KATHERINE BACH | Director | Buy | 2,500 | — | — |
| 2023-02-02 | FRANCOMANO, ROBERT | Chief Commercial Officer | Buy | 45,000 | — | — |
| 2023-02-02 | FRANCOMANO, ROBERT | Chief Commercial Officer | Buy | 12,000 | — | — |
| 2023-02-02 | BURNS, JOHN THOMAS | CFO | Buy | 75,000 | — | — |
| 2023-02-02 | BURNS, JOHN THOMAS | CFO | Buy | 20,000 | — | — |
| 2022-12-05 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Sale | 2,153 | $2.59 | $5576.27 |
| 2022-12-05 | STERGIOU, ANGELOS M. | Director, President and CEO | Sale | 6,494 | $2.61 | $16938.30 |
| 2022-12-05 | BURNS, JOHN THOMAS | Senior VP, Finance & CAO | Sale | 1,159 | $2.59 | $3001.81 |
| 2022-08-13 | KALIN, KATHERINE BACH | Director | Buy | 19,000 | — | — |
| 2022-03-14 | FRANCOMANO, ROBERT | Chief Commercial Officer | Buy | 100,000 | — | — |
| 2022-01-31 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 48,750 | — | — |
| 2022-01-31 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 13,000 | — | — |
| 2022-01-31 | WASMAN, JANE | Director | Buy | 7,125 | — | — |
| 2022-01-31 | WASMAN, JANE | Director | Buy | 1,900 | — | — |
| 2022-01-31 | VARIAN, JOHN | Director | Buy | 7,125 | — | — |
| 2022-01-31 | VARIAN, JOHN | Director | Buy | 1,900 | — | — |
| 2022-01-31 | VAN, NOSTRAND ROBERT L | Director | Buy | 7,125 | — | — |
| 2022-01-31 | VAN, NOSTRAND ROBERT L | Director | Buy | 1,900 | — | — |
| 2022-01-31 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 165,000 | — | — |
| 2022-01-31 | STERGIOU, ANGELOS M. | Director, President and CEO | Buy | 44,000 | — | — |
| 2022-01-31 | SCHEINBERG, DAVID A | Director | Buy | 7,125 | — | — |
| 2022-01-31 | SCHEINBERG, DAVID A | Director | Buy | 1,900 | — | — |
| 2022-01-31 | BURNS, JOHN THOMAS | Senior VP, Finance & CAO | Buy | 36,000 | — | — |
| 2022-01-31 | BURNS, JOHN THOMAS | Senior VP, Finance & CAO | Buy | 9,600 | — | — |
| 2021-12-02 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Sale | 847 | $6.25 | $5297.73 |
| 2021-12-02 | STERGIOU, ANGELOS M. | Director, President and CEO | Sale | 2,120 | $6.25 | $13251.91 |
| 2021-12-02 | BURNS, JOHN THOMAS | VP, Finance & Corp Controller | Sale | 231 | $6.27 | $1447.75 |
| 2021-03-04 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 47,250 | — | — |
| 2021-03-04 | WOOD, BARBARA A | EVP, Gen. Counsel, Corp. Sec. | Buy | 7,875 | — | — |
Frequently asked questions
Are SLS insiders buying or selling?
Over the transactions on record, SLS insiders have been net buyers, with about $581122.91 in stock sold across 16 sales, against 4 open-market purchases.
Does insider selling at SLS mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which SLS insiders are selling the most?
Recent selling is concentrated in a few names. STERGIOU, ANGELOS M. accounts for the largest share on record, with about $356005.22 sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.