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SLN 424B5: Secondary offering

Silence Therapeutics plc

Filed with the SEC on · accession 0001193125-26-342633

SLN filed a 424B5 (prospectus (offering)) with the SEC on Aug 10, 2026. The final terms of an offering of shares or bonds. The stock moved +29.1% by the first close after the filing.

Summary of the filing

Silence Therapeutics plc filed a preliminary prospectus supplement for a $150,000,000 offering of American Depositary Shares (ADSs), each representing three ordinary shares, with Jefferies, Morgan Stanley, Cantor, and William Blair as joint bookrunners.

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

Key details

Total offering amount$150.0M
IssuerSilence Therapeutics plc
UnderwriterJefferies
UnderwriterMorgan Stanley
UnderwriterCantor
UnderwriterWilliam Blair

How SLN stock reacted

Close before

$11.95

Aug 7, 2026

First close after

+29.12%

$15.43

5 trading days

+14.81%

$13.72

Since filing

+65.10%

$19.73

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Frequently asked questions

What did SLN file with the SEC on Aug 10, 2026?

SLN filed a 424B5 (Secondary offering). Silence Therapeutics plc filed a preliminary prospectus supplement for a $150,000,000 offering of American Depositary Shares (ADSs), each representing three ordinary shares, with Jefferies, Morgan Stanley, Cantor, and William Blair as joint bookrunners.

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 $11.95 before the filing and $15.43 on Aug 10, 2026 (+29.12%). Five trading days later: $13.72 (+14.81%).

Other SLN SEC filings

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