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SLN 424B5: Secondary offering

Filed with the SEC on · accession 0001193125-26-347191

SLN filed a 424B5 (prospectus (offering)) with the SEC on Aug 12, 2026. Silence Therapeutics plc is offering 12,962,963 American Depositary Shares (ADSs) representing 38,888,889 ordinary shares at a public offering price of $13.50 per ADS, with total proceeds to the company of approximately $164.5 million before expenses. The stock moved -7.7% by the first close after the filing.

Summary of the filing

Silence Therapeutics plc is offering 12,962,963 American Depositary Shares (ADSs) representing 38,888,889 ordinary shares at a public offering price of $13.50 per ADS, with total proceeds to the company of approximately $164.5 million before expenses. The underwriters have a 30-day option to purchase up to an additional 1,944,444 ADSs.

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

Key details

Total public offering value$175.0M
Underwriting commissions$10.5M
Proceeds to company before expenses$164.5M
Public offering price per ADS$14
IssuerSilence Therapeutics plc
Joint bookrunnerJefferies
Joint bookrunnerMorgan Stanley
Joint bookrunnerCantor
Joint bookrunnerWilliam Blair

How SLN stock reacted

Close before

$14.72

Aug 11, 2026

First close after

-7.74%

$13.58

5 trading days

-4.21%

$14.10

Since filing

+34.04%

$19.73

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Frequently asked questions

What did SLN file with the SEC on Aug 12, 2026?

SLN filed a 424B5 (Secondary offering). Silence Therapeutics plc is offering 12,962,963 American Depositary Shares (ADSs) representing 38,888,889 ordinary shares at a public offering price of $13.50 per ADS, with total proceeds to the company of approximately $164.5 million before expenses. The underwriters have a 30-day option to purchase up to an additional 1,944,444 ADSs.

What does a secondary offering mean for SLN 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 SLN stock react to this filing?

SLN closed at $14.72 before the filing and $13.58 on Aug 12, 2026 (-7.74%). Five trading days later: $14.10 (-4.21%).

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