---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-089272"
form_type: "8-K"
ticker: "SLS"
cik: "0001390478"
company_name: "SELLAS Life Sciences Group, Inc."
filed_at: "2025-09-11T23:59:59+00:00"
generated_at: "2026-05-17T06:51:54.977839+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# SELLAS raises $23.6M via warrant exercise; issues new 5.5-yr warrants at $1.88 strike

## Summary
- Existing warrant holder cash exercises 19,685,040 shares at $1.20, yielding $23.6M gross proceeds.
- In exchange, company issues new unregistered warrants to buy same number of shares at $1.88 (closing price Sep 10).
- New warrants exercisable immediately, expire 5.5 years from issuance; resale registration statement to be filed within 30 days.
- Company pays aggregate fee of 6.5% of gross proceeds to A.G.P. and Maxim Group as financial advisors.
- 90-day lock-up on share issuance and 12-month ban on variable-rate transactions included in inducement agreement.

## SEC filing metadata
- accession: 0001104659-25-089272
- form_type: 8-K
- ticker: SLS
- cik: 0001390478
- company_name: SELLAS Life Sciences Group, Inc.
- filed_at: 2025-09-11T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.01, 3.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1390478/000110465925089272/0001104659-25-089272-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1390478/000110465925089272/tm2525854d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-089272
- JSON: https://secwatch.observer/filing/0001104659-25-089272.json
- Plain text: https://secwatch.observer/filing/0001104659-25-089272.txt

## Key facts
- Equity Issuances
  SELLAS Life Sciences Group, Inc. issued up to 19,685,040 shares of Common Stock of warrant to a holder for in consideration of the Holder’s agreement to exercise the Existing Warrants.
  - Security: warrant
  - Shares: up to 19,685,040 shares of Common Stock
  - Purchaser: a holder
  - Consideration: in consideration of the Holder’s agreement to exercise the Existing Warrants
  source text: Pursuant to the Inducement Agreement, the Holder and the Company agreed that, subject to any applicable beneficial ownership limitations, the Holder would cash exercise 19,685,040 shares of Common Stock at an exercise price of $1.20 per share
  evidence_url: https://www.sec.gov/Archives/edgar/data/1390478/000110465925089272/0001104659-25-089272-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.