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

THOMSON REUTERS CORPORATION

(Translation of registrant’s name into English)

333 Bay Street, Suite 400

Toronto, Ontario M5H 2R2, Canada

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☐                Form 40-F  ☒

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):    ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):    ☐

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, thereunto duly authorized.

Date: January 15, 2020

EXHIBIT INDEX

Exhibit 99.1

Thomson Reuters Appoints Kirk E. Arnold to the Board of Directors

TORONTO, January 15, 2020 – Thomson Reuters (TSX/NYSE: TRI) today announced the appointment of Kirk E. Arnold to the company’s Board of Directors, effective immediately.

“Kirk brings significant experience leading global technology businesses. We look forward to her contributions in the boardroom as Thomson Reuters increasingly focuses on connecting professional communities with open, cloud-based platforms that draw together trusted information, innovative technology and deep domain expertise,” said David Thomson, chairman of Thomson Reuters.

Ms. Arnold, 60, has spent over 30 years as an executive in the technology industry. She is currently an Executive-in-Residence at General Catalyst Ventures, where she works with management teams to help scale and drive growth by providing mentorship, operational and strategic support. She was previously CEO of Data Intensity, a cloud-based data, applications and analytics managed service provider. Prior to that, Ms. Arnold was COO of Avid, a technology provider in the media industry, and CEO and President of Keane, Inc., then a publicly traded global services provider. She has also held senior leadership roles at Computer Sciences Corp., Fidelity Investments and IBM. In addition, she was founder and CEO of NerveWire, a management consulting and systems integration provider.

Ms. Arnold is a member of the boards of directors of Ingersoll Rand, a global electronics manufacturer, The Predictive Index, a global provider of talent optimization and employee engagement software, and Solstice, a provider of community solar technology and services. Ms. Arnold is also on the board of trustees of the Massachusetts Technology Leadership Council and the Commonwealth Institute. In addition, she is a Senior Lecturer at MIT Sloan School of Management and an advisor to the Center for MIT Entrepreneurship.

Ms. Arnold was appointed to the Thomson Reuters Board’s Audit Committee and Human Resources Committee.

Thomson Reuters

Thomson Reuters is a leading provider of business information services. Our products include highly specialized information-enabled software and tools for legal, tax, accounting and compliance professionals combined with the world’s most global news service – Reuters. For more information on Thomson Reuters, visit tr.com and for the latest world news, reuters.com.