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EQ S-3: Shelf registration

Equillium, Inc.

Filed with the SEC on · accession 0001193125-26-458652

EQ filed a S-3 (shelf registration) with the SEC on Nov 12, 2026. Equillium, Inc. filed a Form S-3 shelf registration statement to register up to 35,087,717 shares of common stock for resale by selling stockholders, including 20,130,457 shares issuable upon exercise of pre-funded warrants. The stock moved -7.0% by the first close after the filing.

Summary of the filing

Equillium, Inc. filed a Form S-3 shelf registration statement to register up to 35,087,717 shares of common stock for resale by selling stockholders, including 20,130,457 shares issuable upon exercise of pre-funded warrants. The shares were originally sold in a private placement that closed on October 26, 2026, and the company will not receive any proceeds from the resale.

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Key details

Aggregate shares of common stock registered for resale by selling stockholders$35.1M
Shares issuable upon exercise of pre-funded warrants included in the registered shares$20.1M
Shares of common stock sold in the private placement$15.0M
Last reported sale price of common stock on November 11, 2026$1
RegistrantEquillium, Inc.
Legal counselCooley LLP
Chief executive officerBruce D. Steel

How EQ stock reacted

Close before

$1.42

Nov 11, 2026

First close after

-7.04%

$1.32

5 trading days

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Since filing

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Frequently asked questions

What did EQ file with the SEC on Nov 12, 2026?

EQ filed a S-3 (Shelf registration). Equillium, Inc. filed a Form S-3 shelf registration statement to register up to 35,087,717 shares of common stock for resale by selling stockholders, including 20,130,457 shares issuable upon exercise of pre-funded warrants. The shares were originally sold in a private placement that closed on October 26, 2026, and the company will not receive any proceeds from the resale.

What does a shelf registration mean for EQ stock?

New shares dilute existing holders and are often sold at a discount to the market price.

How do I read a S-3?

Lets the company sell shares or debt later, quickly — a sign more shares may come. Check the maximum amount and compare it with the company’s size. A later "424B" filing shows an actual sale under the shelf.

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 S-3 (shelf registration): Lets the company sell shares or debt later, quickly — a sign more shares may come.

How did EQ stock react to this filing?

EQ closed at $1.42 before the filing and $1.32 on Nov 12, 2026 (-7.04%).

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