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10-K2026-03-19· x-ai/grok-4.1-fast

SLS · SELLAS Life Sciences Group, Inc.

0001390478-26-000003

SEC filing

Summary

SELLAS Life Sciences Group, Inc. (SLS), a late-stage clinical biopharmaceutical company, reported a net loss of $26.9 million for FY 2025, an improvement from $30.9 million in FY 2024, driven by reduced research and development expenses of $16.0 million (down from $19.1 million) and stable general and administrative costs at $12.3 million. Total operating expenses were $28.3 million, resulting in a loss from operations of $28.3 million, partially offset by $1.4 million in interest income. No revenue was generated, consistent with its pre-commercial stage focused on GPS and SLS009 product candidates. Balance sheet strengthened significantly with cash and cash equivalents rising to $71.8 million from $13.9 million, supported by $86.3 million in net financing inflows from warrant inducements ($51.0 million), equity issuances ($23.1 million), and warrant exercises ($12.6 million). Total assets reached $78.3 million, with stockholders' equity at $70.9 million. Operating cash use was $28.4 million, but net cash increase was $57.9 million. The company believes its cash position funds operations for at least 12 months, amid ongoing Phase 3 REGAL trial for GPS in AML maintenance, with 72 events reached as of late 2025. Arbitration with 3D Medicines continues over milestones.

Key takeaways

Full analysis

Performance Summary

SELLAS reported FY2025 net loss of $26.9M, better than $30.9M in FY2024, due to R&D expense decline to $16.0M from $19.1M while G&A held at $12.3M vs $12.4M. Operating loss $28.3M improved from $31.5M, aided by $1.4M interest income (up from $0.6M). No revenue as clinical-stage biotech. Shares basic/diluted 109.1M vs 61.2M prior, reflecting financings. Cash position bolstered to $71.8M from $13.9M via $86.3M financing cash.

Revenue Analysis

No revenue recognized in FY2025 or FY2024. Company pre-revenue, focused on GPS (Phase 3 REGAL trial ongoing, 72 events by Dec 2025) and SLS009. Potential milestones from 3D Medicines ($191.5M remaining) constrained; arbitration ongoing over payments.

Margins & Profitability

N/A - pre-revenue. Operating loss margin effectively -100% on zero revenue. Expenses controlled: R&D down 16%, G&A flat. Stock-based comp $2.0M.

Cash Flow & Balance Sheet

Ops cash use $28.4M (vs $35.4M prior). Financing $86.3M from warrant inducements $51.0M, issuances $23.1M, exercises $12.6M. Net cash increase $57.9M. BS: Assets $78.3M (cash 92%), liabilities $7.5M, equity $70.9M (accum deficit -$275.0M). Shares issued/outstanding 153.1M.

Outlook

Cash sufficient for 12+ months post-year-end (incl $42.6M post-period exercises). REGAL trial event-driven final analysis at 80 events; IDMC recommended continuation. SLS009 advancing. Risks: trial outcomes, funding needs, 3D Medicines arbitration, competition in AML/CDK9 space.