---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-104696"
form_type: "8-K"
ticker: "DFTX"
cik: "0001813814"
company_name: "Definium Therapeutics, Inc."
filed_at: "2025-10-31T23:59:59+00:00"
generated_at: "2026-05-17T01:08:23.691760+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# MindMed prices $225M public offering of 18.375M shares at $12.25/sh; upsize to $258.9M after full over-allotment

## Summary
- Issued 18,375,000 common shares at $12.25 per share; underwriters exercised option for additional 2,756,250 shares.
- Gross proceeds of $258.9M; net proceeds of $242.8M after underwriting discounts and estimated expenses.
- Offering closed October 31, 2025; Jefferies, Leerink Partners, Evercore ISI as joint bookrunners.
- Net proceeds to fund R&D of product candidates, working capital, and potential complementary acquisitions.
- Directors and executive officers subject to 90-day lock-up on share sales without consent.

## SEC filing metadata
- accession: 0001104659-25-104696
- form_type: 8-K
- ticker: DFTX
- cik: 0001813814
- company_name: Definium Therapeutics, Inc.
- filed_at: 2025-10-31T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1813814/000110465925104696/0001104659-25-104696-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1813814/000110465925104696/tm2529910d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-104696
- JSON: https://secwatch.observer/filing/0001104659-25-104696.json
- Plain text: https://secwatch.observer/filing/0001104659-25-104696.txt

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