Frazier Life Sciences Public Fund, L.P. - 30 Jun 2025 SCHEDULE 13G/A Report for DISC MEDICINE, INC. Common Stock, par value $0.0001 per share (IRON)

Filing manager
Frazier Life Sciences Public Fund, L.P.
Reporting owner
Frazier Life Sciences Public Fund, L.P.
Security
DISC MEDICINE, INC. Common Stock, par value $0.0001 per share
Beneficially owned shares
1,026,489 shares
Ownership signal CIK-linked ownership evidence from parsed SEC filings. 2 signals
Large-stake signal

Form

SCHEDULE 13G/A

Passive or exempt beneficial ownership filing.

Ownership

3%

Beneficial ownership of this reported class.

Shares

1,026,489 shares

Shares beneficially owned as disclosed.

Event date

30 Jun 2025

Date tied to the ownership event or amendment.

Accepted by SEC

14 Aug 2025

EDGAR acceptance date.

How to read this large-stake filing
  • Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
  • Compare this filing with the holder history and issuer page before treating the percentage as a current position.
  • Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Class ownership
3%
Subject security Names, identifiers, and filing context for this profile. 2 source fields
Symbol
IRON
Shares outstanding
34,216,300 shares
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
SCHEDULE 13G/A
Accepted by SEC
14 Aug 2025, 13:11:28 UTC
Event date
30 Jun 2025
Source filing
View source filing

Key filing fact

Frazier Life Sciences Public Fund, L.P. disclosed 3% ownership in DISC MEDICINE, INC. Common Stock, par value $0.0001 per share (IRON) on 30 Jun 2025.

Key facts

  • Frazier Life Sciences Public Fund, L.P. filed SCHEDULE 13G/A for DISC MEDICINE, INC. Common Stock, par value $0.0001 per share (IRON).
  • Disclosed ownership: 3%.
  • Date of event: 30 Jun 2025.

Change

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 14 Aug 2025, 13:11.

Research use

  • This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
  • Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

View source filing

Reporting persons

Disclosed reporting parties (17)

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name Ownership Shares owned Sole voting power Shared voting power Signature Title CIK
Frazier Life Sciences Public Fund, L.P. 3% 1,026,489 0 1,026,489 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLSP, L.L.C., GP of FHMLSP, L.P., GP of Frazier Life Sciences Public Fund, L.P.
FHMLSP, L.P. 3% 1,026,489 0 1,026,489 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLSP, L.L.C., GP of FHMLSP, L.P.
FHMLSP, L.L.C. 3% 1,026,489 0 1,026,489 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLSP, L.L.C.
Frazier Life Sciences Public Overage Fund, L.P. 0.9% 300,643 0 300,643 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLSP Overage, L.L.C., GP of FHMLSP Overage, L.P., GP of Frazier Life Sciences Public Overage Fund, L.P.
FHMLSP Overage, L.P. 0.9% 300,643 0 300,643 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLSP Overage, L.L.C., GP of FHMLSP Overage, L.P.
FHMLSP Overage, L.L.C. 0.9% 300,643 0 300,643 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLSP Overage, L.L.C.
Frazier Life Sciences X, L.P. 0.2% 63,218 0 63,218 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLS X, L.L.C., GP of FHMLS X, L.P., GP of Frazier Life Sciences X, L.P.
FHMLS X, L.P. 0.2% 63,218 0 63,218 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLS X, L.L.C., GP of FHMLS X, L.P.
FHMLS X, L.L.C. 0.2% 63,218 0 63,218 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLS X, L.L.C.
Frazier Life Sciences XI, L.P. 0.8% 264,484 0 264,484 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLS XI, L.L.C., GP of FHMLS XI, L.P., GP of Frazier Life Sciences XI, L.P.
FHMLS XI, L.P. 0.8% 264,484 0 264,484 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLS XI, L.L.C., GP of FHMLS XI, L.P.
FHMLS XI, L.L.C. 0.8% 264,484 0 264,484 /s/ Steve R. Bailey By Steve R. Bailey, CFO of FHMLS XI, L.L.C.
James N. Topper 0.2% 63,218 0 63,218 /s/ Steve R. Bailey By Steve R. Bailey, Attorney-in-Fact for James N. Topper, pursuant to a Power of Attorney, a copy of which was filed with the SEC on July 31, 2017
Patrick J. Heron 0.2% 63,218 0 63,218 /s/ Steve R. Bailey By Steve R. Bailey, Attorney-in-Fact for Patrick J. Heron, pursuant to a Power of Attorney, a copy of which was filed with the SEC on July 31, 2017
Albert Cha 0% 0 0 0 /s/ Steve R. Bailey By Steve R. Bailey, Attorney-in-Fact for Albert Cha, pursuant to a Power of Attorney, a copy of which was filed with the SEC on August 16, 2021
James Brush 0% 0 0 0 /s/ Steve R. Bailey By Steve R. Bailey, Attorney-in-Fact for James Brush, pursuant to a Power of Attorney, a copy of which was filed with the SEC on August 16, 2021
Daniel Estes 0% 0 0 0 /s/ Steve R. Bailey By Steve R. Bailey, Attorney-in-Fact for Daniel Estes, pursuant to a Power of Attorney, a copy of which was filed with the SEC on April 18, 2022
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