---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-067133"
form_type: "8-K"
ticker: "RYTM"
cik: "0001649904"
company_name: "RHYTHM PHARMACEUTICALS, INC."
filed_at: "2025-07-11T23:59:59+00:00"
generated_at: "2026-05-18T06:56:22.126384+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Rhythm Pharmaceuticals raises $188.7M in public equity offering; underwriters exercise full option

## Summary
- Offering of 2,058,824 shares at $85.00 per share; underwriters exercised 30-day option for 308,823 additional shares in full.
- Net proceeds expected to be approximately $188.7 million after underwriting discounts and expenses.
- Proceeds to advance clinical development of product candidates and commercialization activities for IMCIVREE, plus working capital.
- Company believes cash and short-term investments, including offering net proceeds, will fund operations for at least 24 months.
- Underwriting agreement with Morgan Stanley and BofA Securities as representatives of the underwriters.

## SEC filing metadata
- accession: 0001104659-25-067133
- form_type: 8-K
- ticker: RYTM
- cik: 0001649904
- company_name: RHYTHM PHARMACEUTICALS, INC.
- filed_at: 2025-07-11T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1649904/000110465925067133/0001104659-25-067133-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1649904/000110465925067133/tm2520063d4_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-067133
- JSON: https://secwatch.observer/filing/0001104659-25-067133.json
- Plain text: https://secwatch.observer/filing/0001104659-25-067133.txt

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