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ATYR 424B5: Shelf registration

aTyr Pharma

Filed with the SEC on · accession 0001339970-26-000083

ATYR filed a 424B5 (prospectus (offering)) with the SEC on Nov 6, 2026. The final terms of an offering of shares or bonds. The stock moved +5.3% by the first close after the filing.

Summary of the filing

aTyr Pharma filed a prospectus supplement to amend and restate its prior at-the-market (ATM) offering prospectus, allowing the sale of up to $79,994,251 of common stock through Jefferies as sales agent under an existing Open Market Sale Agreement.

For details, click here →How to read a 424B5 →

Key details

Aggregate offering price of common stock remaining available under ATM$80.0M
Total aggregate offering price under sales agreement$215.0M
Gross proceeds from prior sales under sales agreement$70.0M
Last reported sale price per share on November 5, 2026$6
IssueraTyr Pharma, Inc.
Sales agent / underwriterJefferies LLC

How ATYR stock reacted

Close before

$6.03

Nov 5, 2026

First close after

+5.31%

$6.35

5 trading days

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Since filing

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Frequently asked questions

What did ATYR file with the SEC on Nov 6, 2026?

ATYR filed a 424B5 (Shelf registration). aTyr Pharma filed a prospectus supplement to amend and restate its prior at-the-market (ATM) offering prospectus, allowing the sale of up to $79,994,251 of common stock through Jefferies as sales agent under an existing Open Market Sale Agreement.

What does a shelf registration mean for ATYR 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 ATYR stock react to this filing?

ATYR closed at $6.03 before the filing and $6.35 on Nov 6, 2026 (+5.31%).

Other ATYR SEC filings

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