UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

Report of Foreign Private Issuer

Pursuant to Rule 13a-16 or 15d-16 under

the Securities Exchange Act of 1934

Report on Form 6-K dated February 29, 2024

(Commission File No. 1-13202)

Nokia Corporation

Karakaari 7

FI-02610 Espoo

Finland

(Translation of the registrant’s name into English and address of registrant’s principal executive
office)

Enclosures:

Stock exchange release   29 February 2024

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Nokia Corporation

Stock Exchange Release

29 February 2024 at 20:15 EET

Nokia has filed its Annual Report on Form 20-F for 2023 and published its Nokia in 2023 Annual Report

Espoo, Finland – Nokia has today filed its Annual Report on Form 20-F for 2023 with the U.S. Securities and Exchange Commission. Additionally, Nokia has published its Nokia in 2023 Annual Report, which includes audited financial statements, the annual review by the Board of Directors, Nokia’s corporate governance statement and the Remuneration Report for the governing bodies for 2023.

The Annual Report on Form 20-F and Nokia in 2023 Annual Report will be available in PDF format at www.nokia.com/financials. The corporate governance statement will be available also at www.nokia.com/about-us/company/leadership-and-governance and the Remuneration Report at www.nokia.com/about-us/company/leadership-and-governance/remuneration/.

The financial statements are also published in XHTML format in accordance with the European Single Electronic Format (ESEF) reporting requirements. In accordance with ESEF requirements, the consolidated financial statements are marked with iXBRL tags. The audit firm Deloitte Oy has provided an independent auditor’s report on Nokia’s ESEF financial statements based on a reasonable assurance engagement it has performed in accordance with International Standard on Assurance Engagements ISAE 3000. The ESEF financial statements in Finnish are available in the zip file attached to this release and at www.nokia.com/financials.

About Nokia

At Nokia, we create technology that helps the world act together.

As a B2B technology innovation leader, we are pioneering networks that sense, think and act by leveraging our work across mobile, fixed and cloud networks. In addition, we create value with intellectual property and long-term research, led by the award-winning Nokia Bell Labs.

Service providers, enterprises and partners worldwide trust Nokia to deliver secure, reliable and sustainable networks today – and work with us to create the digital services and applications of the future.

Inquiries:

Nokia Communications

Phone: +358 10 448 4900

Email: press.services@nokia.com

Kaisa Antikainen, Communications Manager

Stock exchange release   29 February 2024

2 (2)

Nokia

Investor Relations

Phone: +358 40 803 4080

Email: investor.relations@nokia.com

SIGNATURE

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