Small interfering RNA (siRNA) is a short strand of genetic material that binds to and destroys the messenger RNA that carries instructions for making a specific protein, effectively switching that gene off. Investors care because siRNA is a platform for precise medicines: successful trials or approvals can create high-value drugs, while delivery challenges, manufacturing complexity, patent positions and regulatory risk can sharply affect a biotech company's prospects.
american depositary sharesfinancial
American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.
shelf registration statementregulatory
A shelf registration statement is a document a company files with regulators that allows it to sell shares or bonds quickly when it’s a good time to raise money. It’s like having a pre-approved plan ready so the company can act fast without going through lengthy paperwork each time they want to sell, making fundraising more flexible.
form s-3mefregulatory
A Form S-3MEF is a short-form SEC registration used by already-reporting companies to pre-register medium‑term debt notes, effectively creating a ready-to-use borrowing program. For investors, it matters because it gives the issuer a fast, predictable way to take on new debt — like having a pre-approved business loan — which can change a company’s interest costs, credit risk and capital structure quickly and so may affect bond and stock valuation.
prospectus supplementregulatory
A prospectus supplement is an additional document provided alongside a company's main offering details, offering updated or extra information about a specific financial product being sold. It helps investors understand the latest terms, risks, and details of the investment, similar to how an update or revision clarifies or expands on original instructions, ensuring they have current and complete information before making a decision.
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LONDON--(BUSINESS WIRE)--
Silence Therapeutics plc, (Nasdaq: SLN), (“Silence” or the “Company”), a global clinical-stage biotechnology company developing novel short interfering RNA (“siRNA”) therapies, today announced the closing of its previously announced underwritten public offering of 14,907,407 American Depositary Shares (“ADSs”), each representing three ordinary shares of £0.05 each in the capital of the Company, in the United States at a public offering price of $13.50 per ADS, which includes the exercise in full by the underwriters of their option to purchase up to an additional 1,944,444 ADSs. The gross proceeds from the offering, before deducting underwriting discounts and commissions and other offering expenses, were approximately $201.3 million.
Jefferies, Morgan Stanley, Cantor and William Blair acted as joint book-running managers for the offering.
A shelf registration statement relating to the securities in the offering described above was filed with the U.S. Securities and Exchange Commission (“SEC”) on May 18, 2026, and declared effective by the SEC on May 27, 2026.The offering was made by means of a prospectus supplement and the accompanying prospectus that form a part of the registration statement, as well as a related registration statement on Form S-3MEF. A final prospectus supplement and the accompanying prospectus relating to the offering has been filed with the SEC and is available on the SEC’s website at www.sec.gov. Copies of the final prospectus relating to the offering may be obtained from: Jefferies LLC, Attention: Equity Syndicate Prospectus Department, 520 Madison Avenue, New York, New York 10022, or by email at Prospectus_Department@jefferies.com; Morgan Stanley & Co. LLC, Attention: Prospectus Department, 180 Varick Street, 2nd Floor, New York, NY 10014, or by email at prospectus@morganstanley.com; Cantor Fitzgerald & Co., Attention: Capital Markets, 110 East 59th Street, 6th Floor, New York, NY 10022, or by email at prospectus@cantor.com; or William Blair & Company, L.L.C., Attention: Prospectus Department, 150 North Riverside Plaza, Chicago, IL 60606, by telephone at (800) 621-0687, or by email at prospectus@williamblair.com.
This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor will there be any sale of these securities in any state or other jurisdiction in which such offer, solicitation, or sale would be unlawful before registration or qualification under the securities laws of any such state or jurisdiction.
For readers in the European Economic Area (“EEA”)
In any EEA member state (each, a “Relevant State”), this press release and any offering are only addressed to and directed at persons who are qualified investors (“Qualified Investors”) in that Relevant State within the meaning of the Prospectus Regulation. The term “Prospectus Regulation” means Regulation (EU) 2017/1129.
This press release must not be acted on or relied on in any EEA member state by persons who are not Qualified Investors. Any investment or investment activity to which this press release relates is available only to and will only be engaged with Qualified Investors in any EEA member state.
For readers in the United Kingdom
In the UK, this press release and any offering are only addressed to and directed at persons who are qualified investors (“UK Qualified Investors”) within the meaning of paragraph 15 of Part 2 of Schedule 1 of The Public Offers and Admissions to Trading Regulations 2024/105.
In the United Kingdom, this press release, in so far as it constitutes an invitation or inducement to enter into investment activity within the meaning of section 21 of the Financial Services and Markets Act 2000, as amended (the “FSMA”), and any offering are only addressed to and directed at UK Qualified Investors (i) who have professional experience in matters relating to investments falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended, or the “Order”, and/or (ii) who are high net worth companies (or persons to whom it may otherwise be lawfully communicated) falling within Article 49(2)(a) to (d) of the Order (all such persons together being referred to as “relevant persons”).
This press release must not be acted on or relied on in the United Kingdom by persons who are not relevant persons. Any investment or investment activity to which this press release relates is available only to and will only be engaged with relevant persons in the United Kingdom. This press release does not contain an offer or constitute any part of an offer to the public within the meaning of sections 85 and 102B of the FSMA or otherwise.
About Silence Therapeutics
Silence Therapeutics is a global clinical-stage biotechnology company committed to transforming people’s lives by silencing diseases through precision-engineered medicines created with proprietary siRNA (short interfering RNA) technology. Silence leverages its mRNAi GOLD™ platform to create innovative siRNA therapies designed to precisely target and silence genes that cause disease. The Company is advancing a growing pipeline of siRNA product candidates targeting areas of high unmet need across rare and common diseases where treatments are limited or inadequate.
