BOLD EFFECT: Shelf registration

Filed with the SEC on Nov 3, 2026 · accession 9999999995-26-003420

BOLD filed a EFFECT (effect) with the SEC on Nov 3, 2026. A report the company filed with the SEC (the US market regulator). The stock moved -2.5% by the first close after the filing.

Summary of the filing

Boundless Bio, Inc. had a registration statement declared effective by the SEC, allowing the company to offer and sell securities under an existing shelf registration.

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Key details

RegistrantBoundless Bio, Inc.

How BOLD stock reacted

Close before

$2.44

Nov 2, 2026

First close after

-2.46%

$2.38

5 trading days

—

Since filing

+0.82%

$2.46

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Frequently asked questions

What did BOLD file with the SEC on Nov 3, 2026?

BOLD filed a EFFECT (Shelf registration). Boundless Bio, Inc. had a registration statement declared effective by the SEC, allowing the company to offer and sell securities under an existing shelf registration.

What does a shelf registration mean for BOLD stock?

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

How do I read a EFFECT?

A report the company filed with the SEC (the US market regulator). Start with the summary, then the key amounts and names. Compare it with the company’s earlier filings.

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 EFFECT (effect): A report the company filed with the SEC (the US market regulator).

How did BOLD stock react to this filing?

BOLD closed at $2.44 before the filing and $2.38 on Nov 3, 2026 (-2.46%).

Other BOLD SEC filings

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