NASDAQ:SLS 18 October 2025 - 2 January 2026

SELLAS Life Sciences shares rose 16.7% to $3.35 Monday after reporting 72 of 80 deaths in its Phase 3 AML trial as of Dec. 26, short of the final analysis trigger. The company remains blinded to outcomes. About 22.4 million shares changed hands. Investors await the 80th event and unblinding of overall survival results.

Sellas Life Sciences shares closed at $2.14 on Oct. 17, up about 100% year-to-date, then surged another 38% after hours. BlackRock disclosed a 5.4% stake on Oct. 18, joining other major funds that increased holdings in Q2. Sellas’s lead AML drug passed a Phase 3 interim safety review, and its CDK9 inhibitor showed promising Phase 2 results. The company ended Q2 with $25 million cash and raised $23.6 million in September.

Sellas Life Sciences (NASDAQ:SLS) closed near $2.14 on Oct. 17, up about 100% year-to-date, with trading volatility and a 761% surge in call options on Oct. 14. Its GPS immunotherapy remains in Phase 3, while SLS009 showed strong preclinical results and a 44% response rate in Phase 2 AML data. Sellas raised $23.6M in September and had $25.3M cash at June 30. Analyst targets range from $6–7, with short interest at 18%.