IRON 424B5: Secondary offering
Disc Medicine, Inc.
Filed with the SEC on · accession 0001193125-26-425425
IRON filed a 424B5 (prospectus (offering)) with the SEC on Oct 20, 2026. Disc Medicine, Inc. (IRON) announced a public offering of $350 million in common stock and pre-funded warrants, with an additional 30-day underwriter option for up to $52.5 million in shares. The stock moved +0.7% by the first close after the filing.
Summary of the filing
Disc Medicine, Inc. (IRON) announced a public offering of $350 million in common stock and pre-funded warrants, with an additional 30-day underwriter option for up to $52.5 million in shares. The offering is made under an automatic shelf registration statement, with Jefferies, Leerink Partners, Morgan Stanley, and Cantor acting as joint book-running managers.
Key details
How IRON stock reacted
Close before
$78.93
Oct 19, 2026
First close after
+0.70%
$79.48
5 trading days
-1.61%
$77.66
Since filing
-0.58%
$78.47
✦ Ask GOAX AI about this filing — what it means for IRON, what changed since its last filings and what to watch next.
Try it free for 7 days🔔 Want to stay updated on new SEC filings for IRON?
Click hereFrequently asked questions
What did IRON file with the SEC on Oct 20, 2026?
IRON filed a 424B5 (Secondary offering). Disc Medicine, Inc. (IRON) announced a public offering of $350 million in common stock and pre-funded warrants, with an additional 30-day underwriter option for up to $52.5 million in shares. The offering is made under an automatic shelf registration statement, with Jefferies, Leerink Partners, Morgan Stanley, and Cantor acting as joint book-running managers.
What does a secondary offering mean for IRON stock?
New shares dilute existing holders and are often sold at a discount to the market price.
How do I read a 424B5?
The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B5 (prospectus (offering)): The final terms of an offering of shares or bonds.
How did IRON stock react to this filing?
IRON closed at $78.93 before the filing and $79.48 on Oct 20, 2026 (+0.70%). Five trading days later: $77.66 (-1.61%).
Other IRON SEC filings
- 10-Q · SEC filingNov 5, 2026
- 8-K · SEC filingNov 5, 2026
- 424B5 · Shelf registrationNov 5, 2026
- 8-K · Secondary offeringOct 22, 2026
- 424B5 · Secondary offeringOct 21, 2026
- 8-K · Fda approvalOct 19, 2026
- 8-K · Fda approvalSep 10, 2026
- 10-Q · SEC filingJul 30, 2026
- 8-K · SEC filingJul 30, 2026
- 144 · Insider sale plannedJul 7, 2026
Get alerts when IRON files with the SEC, plus live charts, key levels and news for 13,000+ stocks.
Try SEPT free for 7 days