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Form 8-K

sec.gov

8-K — Silence Therapeutics plc

Accession: 0001193125-26-341240

Filed: 2026-08-10

Period: 2026-08-10

CIK: 0001479615

SIC: 2834 (PHARMACEUTICAL PREPARATIONS)

Item: Results of Operations and Financial Condition

Item: Financial Statements and Exhibits

Documents

8-K — d162225d8k.htm (Primary)

EX-99.1 (d162225dex991.htm)

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8-K

8-K (Primary)

Filename: d162225d8k.htm · Sequence: 1

8-K

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): August 10, 2026

Silence Therapeutics plc

(Exact name of Registrant as Specified in Its Charter)

England and Wales

001-39487

Not Applicable

(State or Other Jurisdiction

of Incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

12 Hammersmith Grove

London

United Kingdom

W6 7AP

(Address of Principal Executive Offices)

(Zip Code)

Registrant’s Telephone Number, Including Area Code: +44 20 3457 6900

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

American Depositary Shares, each representing three ordinary shares, nominal value £0.05 per share

SLN

The Nasdaq Stock Market LLC

Ordinary share, nominal value £0.05 per share*

*

The Nasdaq Stock Market LLC

*

Not for trading, but only in connection with the listing of the American Depositary Shares on The Nasdaq Stock Market LLC.

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02

Results of Operations and Financial Condition.

On August 10, 2026, Silence Therapeutics plc (the “Company”) issued a press release announcing its financial and business results for the second quarter ended June 30, 2026. A copy of the press release is furnished as Exhibit 99.1 to this report and incorporated by reference.

The information in this Item 2.02 of this Current Report on 8-K, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and shall not be deemed incorporated by reference into any of the Company’s filings under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, whether made before or after the date hereof, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific references in such filing.

Item 9.01

Financial Statements and Exhibits

(d) Exhibits.

Exhibit

Number

Description

99.1

Press Release dated August 10, 2026

104

Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

SILENCE THERAPEUTICS PLC

Date: August 10, 2026

By:

/s/ Iain Ross

Name: Iain Ross

Title: Interim Principal Executive Officer and Chairman of the Board of Directors

(Principal Executive Officer)

EX-99.1

EX-99.1

Filename: d162225dex991.htm · Sequence: 2

EX-99.1

Exhibit 99.1

Silence Therapeutics Reports Second Quarter 2026 Financial and Business Results

10 August 2026

LONDON, Silence Therapeutics plc, (Nasdaq:

SLN), a global clinical-stage company developing novel siRNA (short interfering RNA) therapies, today reported its financial and business results for the second quarter ended June 30, 2026.

Business Highlights

Divesiran: First-in-class siRNA silencing TMPRSS6 for polycythemia vera (PV) and other blood disorders

Presented follow-up data from the Phase 1 SANRECO trial at the European

Hematology Association (EHA) 2026 Annual Congress in June 2026 demonstrating durable efficacy results and potential best-in-class profile for divesiran in PV. The EHA

2026 poster is available here.

Completed patient dosing in the Phase 2 SANRECO double-blind, placebo-controlled trial evaluating divesiran 6

mg/kg (Q6W and Q12W dosing intervals) in 48 phlebotomy-dependent PV patients in June 2026.

American Journal of Hematology published a preclinical study authored by Silence scientists exploring the

potential of TMPRSS6 silencing as a therapeutic approach for myelodysplastic syndrome (MDS) in June 2026. You can read the publication here.

SLN312 (AZD1705): Phase 1 siRNA silencing ANGPTL3 with a competitive profile for dyslipidemia

Phase 1 results generated under the Company’s AstraZeneca collaboration were presented by AstraZeneca

during a late-breaking oral presentation at the European Atherosclerosis Society (EAS) Congress in May. Results demonstrated a favorable safety profile and dose-dependent, durable reductions in ANGPTL3 protein levels as well as in atherogenic

lipoproteins including LDL-C, Apo-B and non-HDL-C. The EAS 2026 presentation is

available here.

Pre-clinical pipeline updates:

Generated additional preclinical data demonstrating the effect of SLN365 (GPR146) on lipids was reproduced

and not altered by co-treatment with statin or ezetimibe. The program is well positioned for a potential IND filing in 2027.

Generated additional preclinical data for SLN098 (INHBE) in a diet induced obesity mouse model

demonstrating reduced visceral fat and preservation of lean body mass. The program is well positioned for a potential IND filing in 2027.

Second Quarter 2026 Financial Results

Cash Position: Cash and cash equivalents were $72.1 million as of June 30, 2026.

R&D Expenses: Research and development (R&D) expenses were $9.1 million for the three

months ended June 30, 2026, compared to $17.6 million for the three months ended June 30, 2025. The $8.4 million decrease is mainly due to the zerlasiran Phase 3 readiness being completed in 2025 as well as reduced personnel

costs.

G&A Expenses: General and administrative (G&A) expenses were $4.7 million for the three

months ended June 30, 2026, compared to $5.1 million for the three months ended June 30, 2025.

Net Loss: Net loss was $12.3 million, or $0.09 basic and diluted net loss per share for the

three months ended June 30, 2026, compared to a net loss of $27.4 million, or $0.19 basic and diluted net loss per share for the three months ended June 30, 2025.

Total outstanding shares were 141,739,180 ordinary shares (including shares in the form of American

Depositary Shares) as of June 30, 2026.

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. For more information,

please visit https://www.silence-therapeutics.com/.

Forward-Looking Statements

This press release contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E

of the Securities Exchange Act of 1934, as amended. In some cases, you can identify forward-looking statements by terminology such as “aim,” “anticipate,” “assume,” “believe,”

“contemplate,” “continue,” “could,” “design,” “due,” “estimate,” “expect,” “goal,” “intend,” “may,” “objective,”

“plan,” “positioned,” “potential,” “predict,” “seek,” “should,” “target,” “will,” “would” and other similar expressions that are predictions

of or indicate future events and future trends, or the negative of these terms or other comparable terminology. All statements other than statements of historical facts contained in this press release are forward-looking statements. These

forward-looking statements include, but are not limited to, statements about: the Company’s business strategy and plans, including the Company’s clinical development activities and timelines; the potential therapeutic benefits of the

Company’s product candidates; and the anticipated timing of initial topline and future results from the SANRECO Phase 2 trial. Forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties that

could cause actual results and events to differ materially from those anticipated, including, but not limited to, risks and uncertainties related to: the company’s history of net operating losses; the company’s ability to obtain

necessary capital to fund its clinical programs; the early stages of clinical development of the company’s product candidates; the Company’s ability to obtain regulatory approval of and successfully commercialize its product candidates

either on its own or with potential partners; any undesirable side effects or other properties of the company’s product candidates; the Company’s reliance on third-party suppliers and manufacturers; the outcomes of any future

collaboration agreements; and the Company’s ability to adequately maintain intellectual property rights for its product candidates. These and other risks are described in greater detail under the section titled “Risk Factors”

contained in the Company’s Annual Report on Form 10-K and Quarterly Reports on Form 10-Q and the Company’s other filings with the SEC. Any forward-looking

statements that the Company makes in this press release are made pursuant to the Private Securities Litigation Reform Act of 1995, as amended, and speak only as of the date of this press release. Except as required by law, the Company undertakes no

obligation to publicly update any forward-looking statements, whether as a result of new information, future events or otherwise.

Inquiries:

Silence Therapeutics plc

Gem Hopkins, VP, Head of IR and Corporate Communications

Tel: +1 (646) 637-3208

ir@silence-therapeutics.com

Silence Therapeutics plc

Condensed Consolidated Statements of Operations

(Unaudited, in thousands, except share and per share data)

Three months ended June 30,

Six months ended June 30,

2026

2025

2026

2025

Revenue

$

$

224

$

422

$

366

Cost of sales

(85

)

(11

)

(139

)

Gross profit

139

411

227

Research and development costs

(9,148

)

(17,647

)

(18,270

)

(38,460

)

General and administrative expenses

(4,717

)

(5,131

)

(11,743

)

(12,815

)

Restructuring charges

(1,324

)

(1,324

)

Operating loss

(13,865

)

(23,963

)

(29,602

)

(52,372

)

Foreign currency gain/(loss), net

151

(6,613

)

(331

)

(10,382

)

Other income, net

669

861

1,240

1,830

Benefit from R&D credit

778

2,371

1,469

5,050

Loss before income tax expense

(12,267

)

(27,344

)

(27,224

)

(55,874

)

Income tax expense

(1

)

(10

)

(1

)

(10

)

Net Loss

$

(12,268

)

$

(27,354

)

$

(27,225

)

$

(55,884

)

Loss per share (basic and diluted)

$

(0.09

)

$

(0.19

)

$

(0.19

)

$

(0.39

)

Weighted average shares outstanding (basic and diluted)

141,709,762

141,696,047

141,706,190

141,687,438

Silence Therapeutics plc

Condensed Consolidated Balance Sheets

(Unaudited, in thousands, except share and per share data)

June 30, 2026

December 31, 2025

Current assets

Cash and cash equivalents

$

72,054

$

11,277

Short-term investments

73,837

R&D benefit receivable

9,292

22,007

Other current assets

12,935

11,537

Total current assets

94,281

118,658

Property, plant and equipment

1,325

1,581

Operating lease

right-of-use assets

117

167

Goodwill

10,325

10,621

Other intangible assets

237

288

Other long-term assets

127

127

Total assets

$

106,412

$

131,442

Current liabilities

Contract liabilities

$

$

(168

)

Trade and other payables

(12,611

)

(13,356

)

Operating lease liabilities, current

(103

)

(89

)

Total current liabilities

(12,714

)

(13,613

)

Contract liabilities

(55,218

)

(55,454

)

Operating lease liabilities

(9

)

(71

)

Total liabilities

$

(67,941

)

$

(69,138

)

Commitments and contingencies

Shareholders’ equity

Ordinary shares - par value £0.05 per share; 141,739,180 shares

issued at June 30,

2026 (December 31, 2025: 141,701,848)

(10,292

)

(10,290

)

Additional paid-in capital

(621,152

)

(617,562

)

Accumulated deficit

589,632

562,572

Accumulated other comprehensive loss

3,341

2,976

Total shareholders’ equity

(38,471

)

(62,304

)

Total liabilities and shareholders’ equity

$

(106,412

)

$

(131,442

)

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