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 300

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: December 29, 2020

EXHIBIT INDEX

Exhibit 99.1

Thomson Reuters Announces Annual Renewal of Normal Course Issuer Bid

TORONTO, December 29, 2020 – Thomson Reuters Corporation (TSX / NYSE: TRI) today announced that it has received approval from the Toronto Stock Exchange (TSX) for the annual renewal of its normal course issuer bid (NCIB). Under the renewed NCIB, up to 5 million common shares (which represents approximately 1% of Thomson Reuters issued and outstanding common shares) may be repurchased between January 4, 2021 and January 3, 2022.

Thomson Reuters has set a target to maintain approximately 500 million common shares outstanding by using share repurchases to offset dilution associated with its dividend reinvestment and equity incentive plans. On December 24, 2020, there were 497,117,528 Thomson Reuters common shares outstanding.

For its NCIB that began on August 19, 2019 and expired on August 18, 2020, Thomson Reuters previously received approval from the TSX to repurchase up to 25 million common shares. Of this amount, Thomson Reuters repurchased approximately 6.9 million common shares for a total cost of approximately US$500 million, representing an average price of US$72.61 per share. Thomson Reuters repurchased the common shares through the facilities of the TSX, the New York Stock Exchange (NYSE) and other alternative trading systems through its broker.

Under the renewed NCIB, shares may be repurchased in open market transactions on the TSX, the NYSE and/or other exchanges and alternative trading systems, if eligible, or by such other means as may be permitted by the TSX and/or NYSE or under applicable law, including private agreement purchases if Thomson Reuters receives an issuer bid exemption order in the future from applicable securities regulatory authorities in Canada for such purchases. The price that Thomson Reuters will pay for common shares in open market transactions will be the market price at the time of purchase or such other price as may be permitted by the TSX. Any private agreement purchases made under an exemption order may be at a discount to the prevailing market price. In accordance with TSX rules, any daily repurchases (other than pursuant to a block purchase exception) on the TSX under the renewed NCIB are limited to a maximum of 127,341 shares, which represents 25% of the average daily trading volume on the TSX of 509,367 for the six months ended November 30, 2020 (net of repurchases made by the company during that time period). Any shares that are repurchased will be cancelled.

From time to time when Thomson Reuters does not possess material non-public information about itself or its securities, it may enter into a pre-defined plan with its broker to allow for the repurchase of shares at times when Thomson Reuters ordinarily would not be active in the market due to its own internal trading blackout periods, insider trading rules or otherwise. Any such plans entered into with Thomson Reuters broker will be adopted in accordance with applicable Canadian securities laws and the requirements of Rule 10b5-1 under the U.S. Securities Exchange Act of 1934, as amended. In connection with the NCIB, Thomson Reuters has entered into such a plan with its broker pursuant to which up to US$200 million of shares may be repurchased starting on January 4, 2021 under the renewed NCIB.

Decisions regarding any future repurchases will depend on certain factors, such as market conditions, share price and other opportunities to invest capital for growth. Thomson Reuters may elect to suspend or discontinue share repurchases at any time, in accordance with applicable laws.

Thomson Reuters

Thomson Reuters (TSX/NYSE: TRI) 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.

Thomson Reuters Announces Annual Renewal of Normal Course Issuer Bid

Page 2 of 2

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Certain statements in this news release are forward-looking, including statements regarding the company’s intentions related to future share repurchases. While the company believes that it has a reasonable basis for making forward-looking statements in this news release, they are not a guarantee of future performance or outcomes and there is no assurance that the events described in any forward-looking statement will materialize. Forward-looking statements are subject to a number of risks, uncertainties and assumptions that could cause actual results or events to differ materially from current expectations. Many of these risks, uncertainties and assumptions are beyond our company’s control and the effects of them can be difficult to predict. You are cautioned not to place undue reliance on forward-looking statements which reflect expectations only as of the date of this news release. Except as may be required by applicable law, Thomson Reuters disclaims any obligation to update or revise any forward-looking statements.

CONTACTS

Exhibit 99.2

Common Shares of Thomson Reuters (“Common Shares”)

497,117,528 Common Shares

Not applicable

1.0%

Not applicable

Up to 5,000,000 Common Shares

Up to 5,000,000 Common Shares

No

509,367 Common Shares – average daily trading volume on the TSX for the six most recently completed months ended November 30, 2020.

(as at May 11, 2017)

No

If the answer is YES:

Not applicable

Not applicable

Any Common Shares that are repurchased will be cancelled.

The NCIB will commence on January 4, 2021 and will terminate no later than January 3, 2022.

Purchases of Common Shares will be effected through the facilities of the TSX, the New York Stock Exchange and/or other exchanges and alternative trading systems, if eligible, or by such other means as may be permitted by the TSX and/or New York Stock Exchange or under applicable law by a registered investment dealer (or an affiliate of the dealer), including private agreement purchases or share purchase program agreement purchases if Thomson Reuters receives an issuer bid exemption order in the future from applicable securities regulatory authorities in Canada for such purchases.

Purchase and payment for the Common Shares will be made by Thomson Reuters in accordance with the requirements of the TSX and applicable securities laws.

(as at May 11, 2017)

The price that Thomson Reuters will pay for the Common Shares in open market transactions acquired by it will be the market price of the Common Shares at the time of acquisition or such other price as may be permitted by the TSX. Any private agreement purchases made under an exemption order may be at a discount to the prevailing market price.

Thomson Reuters does not presently intend to purchase Common Shares other than by means of open market transactions or private agreement purchases under an exemption order during the period the NCIB is outstanding.

There are no restrictions on the consideration to be offered by Thomson Reuters under the NCIB and there are no other restrictions relating to the NCIB. Thomson Reuters and holders of the Common Shares will be responsible for the payment of commissions to their respective brokers through which purchases and sales will be made at the applicable prevailing rates at the time of purchase.

In authorizing the NCIB, the Thomson Reuters Board believes that the purchase of Common Shares from time to time can be undertaken at prices that make the acquisition of such Common Shares an appropriate use of Thomson Reuters available funds and an appropriate mechanism for returning capital to its shareholders.

The directors and officers of Thomson Reuters, after reasonable enquiry, have no knowledge of any appraisal or valuation regarding Thomson Reuters, its material assets or securities, prepared within the last two years preceding the date of this notice.

(as at May 11, 2017)

Purchases of Common Shares were effected through the facilities of the TSX, the NYSE and other alternative trading systems by RBC Capital Markets, a registered investment dealer.

25,000,000

6,863,330

US$72.61

There are no persons acting jointly or in concert with Thomson Reuters.

No director or senior officer of Thomson Reuters presently intends to sell Common Shares during the course of the NCIB. During the course of this NCIB, directors and senior officers of Thomson Reuters may from time to time effect such sales of Common Shares as may be necessary or desirable in their personal circumstances and sales of Common Shares by such persons may occur as a result of the exercise by such persons of outstanding stock options or the vesting of restricted share units or deferred share units.

Except as set forth below, to the knowledge of Thomson Reuters, its directors and senior officers, after reasonable enquiry, (i) no associate of a director or senior officer of Thomson Reuters; (ii) no person acting jointly in concert with Thomson Reuters; and (iii) no person holding 10% or more of any class of equity securities of Thomson Reuters presently intends to sell Common Shares during the course of this NCIB.

(as at May 11, 2017)

As of December 24, 2020, The Woodbridge Company Limited and other companies affiliated with it (“Woodbridge”) beneficially owned 327,661,048 Common Shares, or approximately 66% of the outstanding Common Shares. Woodbridge plans to continue to hold its Common Shares for the long term and accordingly to maintain its controlling interest in Thomson Reuters. From time to time, Woodbridge disposes of Common Shares in amounts that are not material for liquidity and other reasons and such disposals may occur during the course of this NCIB. Thomson Reuters and Woodbridge have a protocol in place to ensure that Thomson Reuters is not purchasing Common Shares on the open market on any day when Woodbridge is selling Common Shares.

Not applicable

To the knowledge of Thomson Reuters, its directors and senior officers, after reasonable enquiry, there are no undisclosed material changes in the affairs of Thomson Reuters.

Thomson Reuters has set a target to maintain approximately 500 million Common Shares outstanding by using share repurchases to offset dilution associated with its dividend reinvestment and equity incentive plans. On December 24, 2020, there were 497,117,528 Common Shares outstanding. Decisions regarding any future repurchases will depend on certain factors, such as market conditions, share price and other opportunities to invest capital for growth. Thomson Reuters may elect to suspend or discontinue share repurchases at any time, in accordance with applicable laws.

From time to time when Thomson Reuters does not possess material nonpublic information about itself or its securities, it may enter into a pre-defined plan with its broker to allow for the

(as at May 11, 2017)

repurchase of Common Shares at times when it ordinarily would not be active in the market due to its own internal trading blackout periods, insider trading rules or otherwise. Any such plans entered into with Thomson Reuters broker will be adopted in accordance with applicable Canadian securities laws and the requirements of Rule 10b5-1 under the U.S. Securities Exchange Act of 1934, as amended. In connection with the NCIB, Thomson Reuters has entered into such a plan with its broker pursuant to which up to US$200 million of Common Shares may be repurchased starting on January 4, 2021 under the NCIB.

(as at May 11, 2017)