---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-072792"
form_type: "8-K"
ticker: "SLDB"
cik: "0001707502"
company_name: "Solid Biosciences Inc."
filed_at: "2025-05-15T23:59:59+00:00"
generated_at: "2026-05-21T05:18:04.160173+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Solid Biosciences ups ATM offering capacity to $85M; $10.5M already sold

## Summary
- Filed prospectus supplement on May 15, 2025 to increase ATM offering from $75M to $85M.
- Prior prospectus had $75M capacity; $10.5M in gross proceeds sold as of filing date.
- Offering conducted under existing S-3 shelf registration statement via Jefferies LLC.
- Legal opinion of Wilmer Cutler Pickering Hale and Dorr LLP attached as Exhibit 5.1.

## SEC filing metadata
- accession: 0000950170-25-072792
- form_type: 8-K
- ticker: SLDB
- cik: 0001707502
- company_name: Solid Biosciences Inc.
- filed_at: 2025-05-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1707502/000095017025072792/0000950170-25-072792-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1707502/000095017025072792/sldb-20250515.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-072792
- JSON: https://secwatch.observer/filing/0000950170-25-072792.json
- Plain text: https://secwatch.observer/filing/0000950170-25-072792.txt

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