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LBRX 424B3: Secondary offering

LB Pharmaceuticals Inc

Filed with the SEC on · accession 0001193125-26-322276

LBRX filed a 424B3 (prospectus (offering)) with the SEC on Jul 29, 2026. The final terms of an offering of shares or bonds. The stock moved +11.6% by the first close after the filing.

Summary of the filing

LB Pharmaceuticals Inc entered into a Securities Purchase Agreement to sell 3,577,560 shares of common stock and 715,513 pre-funded warrants in a private placement, expecting gross proceeds of approximately $150.0 million to fund pipeline expansion and working capital.

For details, click here →How to read a 424B3 →

Key details

Gross proceeds from private placement$150.0M
Shares of common stock offered$3.6M
Pre-funded warrants offered$716K
Per share purchase price$35
IssuerLB Pharmaceuticals Inc
Placement agentLeerink Partners LLC
Placement agentPiper Sandler & Co.

How LBRX stock reacted

Close before

$34.94

Jul 28, 2026

First close after

+11.62%

$39.00

5 trading days

+28.79%

$45.00

Since filing

+16.83%

$40.82

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Frequently asked questions

What did LBRX file with the SEC on Jul 29, 2026?

LBRX filed a 424B3 (Secondary offering). LB Pharmaceuticals Inc entered into a Securities Purchase Agreement to sell 3,577,560 shares of common stock and 715,513 pre-funded warrants in a private placement, expecting gross proceeds of approximately $150.0 million to fund pipeline expansion and working capital.

What does a secondary offering mean for LBRX stock?

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

How do I read a 424B3?

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 424B3 (prospectus (offering)): The final terms of an offering of shares or bonds.

How did LBRX stock react to this filing?

LBRX closed at $34.94 before the filing and $39.00 on Jul 29, 2026 (+11.62%). Five trading days later: $45.00 (+28.79%).

Other LBRX SEC filings

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