SELLAS Life Sciences Group, Inc. (SLS)

Latest Insider Confidence Score

2026Q1

50.2
Bullish

Company insider confidence (by quarter)

2010Q3 2026Q1

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Galena Biopharma, Inc. 10% Owner 32,393,095 May 2, 2013
Hudson Bay Capital Management LP 10% Owner 2,146,559 Feb 10, 2017
Gerber Sander 10% Owner 2,146,559 Feb 10, 2017
Stergiou Angelos M. CEO 874,032 Dec 5, 2025
Mazanet Rosemary — 450,000 Jan 31, 2013

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Jan 7, 2026 Jan 9, 2026 Varian John Director Neutral 90.0 +50,000 218.34% ✗ -
Jan 7, 2026 Jan 9, 2026 VAN NOSTRAND ROBERT L Director Neutral 90.0 +50,000 151.98% ✗ -
Jan 7, 2026 Jan 9, 2026 SCHEINBERG DAVID A Director Neutral 90.0 +50,000 216.62% ✗ -
Jan 7, 2026 Jan 9, 2026 CICIC DRAGAN SVP, Chief Development Officer Neutral 90.0 +300,000 116.37% ✗ -
Jan 7, 2026 Jan 9, 2026 Burns John Thomas CFO Neutral 90.0 +300,000 117.96% ✗ -
Jan 7, 2026 Jan 9, 2026 Kalin Katherine Bach Director Neutral 90.0 +50,000 47.89% ✗ -
Jan 7, 2026 Jan 9, 2026 Wasman Jane Director Neutral 90.0 +50,000 116.55% ✗ -
Dec 3, 2025 Dec 5, 2025 CICIC DRAGAN SVP, Chief Development Officer Sell 42.5 -63,800 -19.84% ✗ $95.7K
Dec 3, 2025 Dec 5, 2025 Burns John Thomas CFO Sell 42.5 -58,592 -18.72% ✗ $87.9K
Dec 3, 2025 Dec 5, 2025 Stergiou Angelos M. CEO Sell 40.0 -187,066 -21.40% ✗ $280.6K
Nov 19, 2025 Nov 21, 2025 Kalin Katherine Bach Director Buy 95.0 +63,400 154.63% ✗ $100.8K
Jun 12, 2025 Jun 13, 2025 VAN NOSTRAND ROBERT L Director Buy 91.3 +10,000 96.15% ✗ $14.8K
May 30, 2025 Jun 2, 2025 Wasman Jane Director Buy 91.3 +20,000 192.31% ✗ $33.8K
May 22, 2025 May 22, 2025 Kalin Katherine Bach Director Buy 91.3 +20,000 95.24% ✗ $36K
Jan 10, 2025 Jan 14, 2025 Burns John Thomas CFO Neutral 90.0 +194,300 185.47% ✗ -
Jan 10, 2025 Jan 14, 2025 Stergiou Angelos M. CEO Neutral 90.0 +500,900 139.86% ✗ -
Jan 10, 2025 Jan 14, 2025 SCHEINBERG DAVID A Director Neutral 90.0 +12,500 118.13% ✗ -
Jan 10, 2025 Jan 14, 2025 Wasman Jane Director Neutral 90.0 +12,500 120.19% ✗ -
Jan 10, 2025 Jan 14, 2025 VAN NOSTRAND ROBERT L Director Neutral 90.0 +12,500 120.19% ✗ -
Jan 10, 2025 Jan 14, 2025 Kalin Katherine Bach Director Neutral 90.0 +12,500 147.06% ✗ -
Jan 10, 2025 Jan 14, 2025 Varian John Director Neutral 90.0 +12,500 120.19% ✗ -
Jan 10, 2025 Jan 14, 2025 CICIC DRAGAN SVP, Chief Development Officer Neutral 90.0 +194,300 168.48% ✗ -
Dec 4, 2024 Dec 5, 2024 CICIC DRAGAN SVP, Chief Development Officer Sell 47.5 -8,256 -6.68% ✗ $9.3K
Dec 4, 2024 Dec 5, 2024 Stergiou Angelos M. CEO Sell 46.3 -28,289 -7.32% ✗ $32K
Dec 4, 2024 Dec 5, 2024 Burns John Thomas CFO Sell 47.5 -7,165 -6.40% ✗ $8.1K
Jun 27, 2024 CICIC DRAGAN SVP, Chief Development Officer Neutral 52.5 - 0.00% ✗ -
Jan 22, 2024 Jan 25, 2024 Stergiou Angelos M. CEO Neutral 90.0 +159,000 73.13% ✗ -
Jan 22, 2024 Jan 25, 2024 SCHEINBERG DAVID A Director Neutral 90.0 +6,000 130.95% ✗ -
Jan 22, 2024 Jan 25, 2024 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Neutral 90.0 +35,000 42.57% ✗ -
Jan 22, 2024 Jan 25, 2024 Kalin Katherine Bach Director Neutral 90.0 +6,000 240.00% ✗ -
Jan 22, 2024 Jan 25, 2024 Wasman Jane Director Neutral 90.0 +6,000 136.36% ✗ -
Jan 22, 2024 Jan 25, 2024 Francomano Robert Chief Commercial Officer Neutral 90.0 +20,000 95.61% ✗ -
Jan 22, 2024 Jan 25, 2024 Varian John Director Neutral 90.0 +6,000 136.36% ✗ -
Jan 22, 2024 Jan 25, 2024 VAN NOSTRAND ROBERT L Director Neutral 90.0 +6,000 136.36% ✗ -
Jan 22, 2024 Jan 25, 2024 Burns John Thomas CFO Neutral 90.0 +47,000 85.57% ✗ -
Dec 6, 2023 Dec 8, 2023 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Sell 47.5 -4,119 -4.77% ✗ $4.4K
Dec 6, 2023 Dec 8, 2023 Stergiou Angelos M. CEO Sell 46.3 -12,268 -5.34% ✗ $13.2K
Dec 6, 2023 Dec 8, 2023 Francomano Robert Chief Commercial Officer Sell 47.5 -1,082 -4.92% ✗ $1.2K
Dec 6, 2023 Dec 8, 2023 Burns John Thomas CFO Sell 47.5 -2,929 -5.06% ✗ $3.2K
Feb 2, 2023 Feb 3, 2023 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Neutral 90.0 +20,000 35.50% ✗ -
Feb 2, 2023 Feb 3, 2023 Burns John Thomas CFO Neutral 90.0 +20,000 68.15% ✗ -
Feb 2, 2023 Feb 3, 2023 Stergiou Angelos M. CEO Neutral 90.0 +58,000 35.87% ✗ -
Feb 2, 2023 Feb 3, 2023 Francomano Robert Chief Commercial Officer Neutral 90.0 +12,000 100.00% ✗ -
Feb 2, 2023 Feb 3, 2023 Varian John Director Neutral 90.0 +2,500 131.58% ✗ -
Feb 2, 2023 Feb 3, 2023 Wasman Jane Director Neutral 90.0 +2,500 131.58% ✗ -
Feb 2, 2023 Feb 3, 2023 VAN NOSTRAND ROBERT L Director Neutral 90.0 +2,500 131.58% ✗ -
Feb 2, 2023 Feb 3, 2023 SCHEINBERG DAVID A Director Neutral 90.0 +2,500 120.08% ✗ -
Feb 2, 2023 Feb 3, 2023 Kalin Katherine Bach Director Neutral 90.0 +2,500 100.00% ✗ -
Dec 5, 2022 Dec 5, 2022 Stergiou Angelos M. CEO Sell 46.3 -6,494 -3.86% ✗ $16.9K
Dec 5, 2022 Dec 5, 2022 Burns John Thomas Senior VP, Finance & CAO Sell 47.5 -1,159 -3.80% ✗ $3K
Dec 5, 2022 Dec 5, 2022 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Sell 47.5 -2,153 -3.68% ✗ $5.6K
Aug 13, 2022 Aug 16, 2022 Kalin Katherine Bach Director Neutral 52.5 - 0.00% ✗ -
Aug 16, 2022 Kalin Katherine Bach Director Neutral 52.5 - 0.00% ✗ -
Mar 14, 2022 Mar 15, 2022 Francomano Robert Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Mar 14, 2022 Francomano Robert Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Jan 31, 2022 Feb 1, 2022 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Neutral 90.0 +13,000 30.93% ✗ -
Jan 31, 2022 Feb 1, 2022 Wasman Jane Director Neutral 90.0 +1,900 100.00% ✗ -
Jan 31, 2022 Feb 1, 2022 Varian John Director Neutral 90.0 +1,900 100.00% ✗ -
Jan 31, 2022 Feb 1, 2022 VAN NOSTRAND ROBERT L Director Neutral 90.0 +1,900 100.00% ✗ -
Jan 31, 2022 Feb 1, 2022 Stergiou Angelos M. CEO Neutral 90.0 +44,000 36.31% ✗ -
Jan 31, 2022 Feb 1, 2022 SCHEINBERG DAVID A Director Neutral 90.0 +1,900 1043.96% ✗ -
Jan 31, 2022 Feb 1, 2022 Burns John Thomas Senior VP, Finance & CAO Neutral 90.0 +9,600 54.41% ✗ -
Dec 2, 2021 Dec 3, 2021 Stergiou Angelos M. CEO Sell 46.3 -2,120 -1.72% ✗ $13.3K
Dec 2, 2021 Dec 3, 2021 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Sell 47.5 -847 -1.98% ✗ $5.3K
Dec 2, 2021 Dec 3, 2021 Burns John Thomas VP, Finance & Corp Controller Sell 47.5 -231 -1.29% ✗ $1.4K
Dec 3, 2021 Stergiou Angelos M. CEO Neutral 52.5 - 0.00% ✗ -
Dec 3, 2021 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Neutral 52.5 - 0.00% ✗ -
Dec 3, 2021 Burns John Thomas VP, Finance & Corp Controller Neutral 52.5 - 0.00% ✗ -
Mar 4, 2021 Mar 8, 2021 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Neutral 90.0 +7,875 31.50% ✗ -
Mar 4, 2021 Mar 8, 2021 SCHEINBERG DAVID A Director Neutral 52.5 - 0.00% ✗ -
Mar 4, 2021 Mar 8, 2021 Varian John Director Neutral 52.5 - 0.00% ✗ -
Mar 4, 2021 Mar 8, 2021 Wasman Jane Director Neutral 52.5 - 0.00% ✗ -
Mar 4, 2021 Mar 8, 2021 VAN NOSTRAND ROBERT L Director Neutral 52.5 - 0.00% ✗ -
Mar 4, 2021 Mar 8, 2021 Burns John Thomas VP, Finance & Corp Controller Neutral 90.0 +2,875 28.75% ✗ -
Mar 4, 2021 Mar 8, 2021 Stergiou Angelos M. CEO Neutral 90.0 +19,750 25.15% ✗ -
Mar 12, 2020 Mar 16, 2020 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Neutral 90.0 +35,000 100.00% ✗ -
Mar 12, 2020 Mar 16, 2020 Wasman Jane Director Neutral 52.5 - 0.00% ✗ -
Mar 12, 2020 Mar 16, 2020 Varian John Director Neutral 52.5 - 0.00% ✗ -
Mar 12, 2020 Mar 16, 2020 VAN NOSTRAND ROBERT L Director Neutral 52.5 - 0.00% ✗ -
Mar 12, 2020 Mar 16, 2020 Stergiou Angelos M. CEO Neutral 90.0 +95,000 100.00% ✗ -
Mar 12, 2020 Mar 16, 2020 SCHEINBERG DAVID A Director Neutral 52.5 - 0.00% ✗ -
Mar 12, 2020 Mar 16, 2020 Burns John Thomas VP, Finance & Corp Controller Neutral 90.0 +15,000 100.00% ✗ -
Mar 14, 2019 Mar 18, 2019 SCHEINBERG DAVID A Director Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 Wasman Jane Director Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 VAN NOSTRAND ROBERT L Director Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 Sarlis Nicholas J. Chief Medical Officer and SVP Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 Ghiglieri Stephen F Director Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 Burns John Thomas VP, Finance & Corp Controller Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 Stergiou Angelos M. CEO Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 Varian John Director Neutral 52.5 - 0.00% ✗ -
Mar 14, 2019 Mar 18, 2019 WOOD BARBARA A EVP, Gen. Counsel, Corp. Sec. Neutral 52.5 - 0.00% ✗ -
Dec 31, 2018 Jan 3, 2019 Stergiou Angelos M. CEO Sell 26.3 -23,277 -5.17% ✗ $29.2K
Dec 19, 2018 Burns John Thomas VP, Finance & Corp Controller Neutral 52.5 - 0.00% ✗ -
Sep 24, 2018 Sep 26, 2018 Lopez Fabio Other Neutral 27.5 -2,523,986 -100.00% ✗ -
Jun 12, 2018 Jun 13, 2018 SCHEINBERG DAVID A Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2018 Jun 13, 2018 Varian John Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2018 Jun 13, 2018 VAN NOSTRAND ROBERT L Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2018 Jun 13, 2018 Ghiglieri Stephen F Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2018 Jun 13, 2018 Wasman Jane Director Neutral 52.5 - 0.00% ✗ -
Jun 12, 2018 Jun 13, 2018 Lopez Fabio Director Neutral 52.5 - 0.00% ✗ -