X0202 SCHEDULE 13D/A 0001397960 XXXXXXXX LIVE 24 Common Shares of Thomson Reuters Corporation 04/15/2026 0001075124 884903709 THOMSON REUTERS CORP /CAN/

19 Duncan Street Toronto A6 M5H 3H1

David Colman (416)-364-8700 65 Queen Street West, Suite 2400 Toronto Ontario Z4 M5H 2M8 Y THOMSON INVESTMENTS LIMITED A6 0 312518088 0 312518088 312518088 70.56 CO In reference to rows 8 and 10 above, includes 300,790,959 common shares of Thomson Reuters Corporation ("Common Shares") beneficially owned by The Woodbridge Company Limited and subsidiaries and 11,727,129 Common Shares beneficially owned by the family of the late Roy H. Thomson, the first Lord Thomson of Fleet through various affiliated corporations. In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. 0001397960 N THE WOODBRIDGE COMPANY LIMITED A6 0 300790959 0 300790959 300790959 67.91 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1908720 ONTARIO LIMITED A6 0 202322148 0 202322148 202322148 45.7 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1000706525 ONTARIO LIMITED A6 0 84798839 0 84798839 84798839 19.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1396164 Ontario Limited A6 0 13160949 0 13160949 13160949 2.9 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1925124 Ontario Limited A6 0 506720 0 506720 506720 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y Woodbridge Investments Corporation A6 0 2303 0 2303 2303 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y KRT INVESTMENTS CORP. A6 0 87754 0 87754 87754 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y DKRT FAMILY CORP. A6 0 276864 0 276864 276864 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y DKRT INVESTMENTS CORP. A6 0 327761 0 327761 327761 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y DKRT FUNDING CORP. A6 0 137630 0 137630 137630 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1000920847 ONTARIO LIMITED A6 0 260000 0 260000 260000 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y MB FINANCE CORP. A6 0 1596 0 1596 1596 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y TT INVESTMENTS CORP. A6 0 16516 0 16516 16516 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y TLT INVESTMENTS CORP. 0 530176 0 530176 530176 0.12 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y TLT ISSUE HOLDCO A CORP. A6 0 195900 0 195900 195900 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y TLT ISSUE HOLDCO CORP. A6 0 759751 0 759751 759751 0.17 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1761173 ONTARIO LIMITED A6 0 1422190 0 1422190 1422190 0.32 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 2677295 ONTARIO LIMITED A6 0 697006 0 697006 697006 0.16 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1000919995 ONTARIO LIMITED A6 0 260000 0 260000 260000 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1754693 ONTARIO LIMITED A6 0 437878 0 437878 437878 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y PJT INVESTMENTS CORP. A6 0 270297 0 270297 270297 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1000920848 ONTARIO LIMITED A6 0 260000 0 260000 260000 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y PGF INVESTMENTS CORP. A6 0 20358 0 20358 20358 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y PGF FAMILY CORP. A6 0 19984 0 19984 19984 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y LCC INVESTMENTS CORP. A6 0 1777670 0 1777670 1777670 0.4 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1000078931 ONTARIO LIMITED A6 0 357105 0 357105 357105 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1000421133 ONTARIO LIMITED A6 0 39832 0 39832 39832 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y LLD INVESTMENTS CORP. A6 0 96804 0 96804 96804 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 2806335 ONTARIO LIMITED A6 0 64585 0 64585 64585 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y JRD INVESTMENTS CORP. A6 0 412843 0 412843 412843 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 2754783 ONTARIO LIMITED A6 0 6988 0 6988 6988 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y GED INVESTMENTS CORP. A6 0 485738 0 485738 485738 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y SEG INVESTMENTS CORP. A6 0 477059 0 477059 477059 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1000031857 ONTARIO LIMITED A6 0 444575 0 444575 444575 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y SEG FAMILY CORP. A6 0 66546 0 66546 66546 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y TCM INVESTMENTS CORP. A6 0 268255 0 268255 268255 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y DYM INVESTMENTS CORP. A6 0 254129 0 254129 254129 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y BG INVESTMENTS CORP. A6 0 521530 0 521530 521530 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y ACG INVESTMENTS CORP. A6 0 233236 0 233236 233236 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 1001404651 ONTARIO LIMITED A6 0 1513 0 1513 1513 0 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Y 2808194 ONTARIO LIMITED A6 0 237060 0 237060 237060 0.1 CO In reference to row 13 above, based on 442,934,310 Common Shares outstanding as of March 31, 2026. Common Shares of Thomson Reuters Corporation THOMSON REUTERS CORP /CAN/ 19 Duncan Street Toronto A6 M5H 3H1 Explanatory Note: The common shares (the "Common Shares") of Thomson Reuters Corporation ("Thomson Reuters") that are the subject matter of this Amendment 24 to Schedule 13D are beneficially owned by Thomson Investments Limited, The Woodbridge Company Limited ("Woodbridge"), 1908720 Ontario Limited, 1000706525 Ontario Limited, 1396164 Ontario Limited, 1925124 Ontario Limited, Woodbridge Investments Corporation, KRT Investments Corp., DKRT Family Corp., DKRT Investments Corp., DKRT Funding Corp., 1000920847 Ontario Limited, MB Finance Corp., TT Investments Corp., TLT Investments Corp., TLT Issue Holdco A Corp., TLT Issue Holdco Corp., 1761173 Ontario Limited, 2677295 Ontario Limited, 1000919995 Ontario Limited, 1754693 Ontario Limited, PJT Investments Corp., 1000920848 Ontario Limited, PGF Investments Corp., PGF Family Corp., LCC Investments Corp., 1000078931 Ontario Limited, 1000421133 Ontario Limited, LLD Investments Corp., 2806335 Ontario Limited, JRD Investments Corp., 2754783 Ontario Limited, GED Investments Corp., SEG Investments Corp., 1000031857 Ontario Limited, SEG Family Corp., TCM Investments Corp., DYM Investments Corp., BG Investments Corp., ACG Investments Corp., 1001404651 Ontario Limited and 2808194 Ontario Limited (each a "Reporting Person" and collectively, the "Reporting Persons"). Woodbridge, a private company, is the primary investment vehicle for members of the family of the late Roy H. Thomson, the first Lord Thomson of Fleet. Prior to his death in 2006, Kenneth R. Thomson controlled Thomson Reuters through Woodbridge. He did so by holding shares of a holding company of Woodbridge, Thomson Investments Limited. Under his estate arrangements, the 2003 TIL Settlement, a trust of which The Bank of Nova Scotia Trust Company (the "Trust Company") is trustee and members of the family of the late first Lord Thomson of Fleet are beneficiaries, holds those holding company shares. Kenneth R. Thomson established these arrangements to provide for long-term stability of the business of Woodbridge. The equity of Woodbridge continues to be owned by members of successive generations of the family of the first Lord Thomson of Fleet. Under the Kenneth R. Thomson estate arrangements, the directors and officers of Woodbridge are responsible for its business and operations. In certain limited circumstances, including very substantial dispositions of Common Shares by Woodbridge, the estate arrangements provide for approval of the Trust Company, as trustee, to be obtained. As of April 9, 2026, Thomson Investments Limited is the beneficial owner of 312,518,088 Common Shares, representing approximately 70.56% of the outstanding Common Shares. Of those Common Shares, Woodbridge is the beneficial owner of 300,790,959 Common Shares, representing approximately 67.91% of the outstanding Common Shares. This Amendment No. 24 to Schedule 13D is being filed to report certain information under Item 2, Item 4, Item 5, Item 6, Item 7 and Schedule A (attached as Exhibit 3) hereto. This Schedule 13D amends, restates and updates the amendment to Schedule 13D filed by Woodbridge on November 10, 2025. There has been no material change in the Thomson family's beneficial ownership of Common Shares since then. Thomson Investments Limited, Woodbridge, 1908720 Ontario Limited, 1000706525 Ontario Limited, 1396164 Ontario Limited, 1925124 Ontario Limited, Woodbridge Investments Corporation, KRT Investments Corp., DKRT Family Corp., DKRT Investments Corp., DKRT Funding Corp., 1000920847 Ontario Limited, MB Finance Corp., TT Investments Corp., TLT Investments Corp., TLT Issue Holdco A Corp., TLT Issue Holdco Corp., 1761173 Ontario Limited, 2677295 Ontario Limited, 1000919995 Ontario Limited, 1754693 Ontario Limited, PJT Investments Corp., 1000920848 Ontario Limited, PGF Investments Corp., PGF Family Corp., LCC Investments Corp., 1000078931 Ontario Limited, 1000421133 Ontario Limited, LLD Investments Corp., 2806335 Ontario Limited, JRD Investments Corp., 2754783 Ontario Limited, GED Investments Corp., SEG Investments Corp, 1000031857 Ontario Limited, SEG Family Corp., TCM Investments Corp., DYM Investments Corp., BG Investments Corp., ACG Investments Corp., 1001404651 Ontario Limited and 2808194 Ontario Limited. See Schedule A for the address of each Reporting Person. See Schedule A for certain information as to the executive officers and directors of each Reporting Person. To the knowledge of each Reporting Person, neither such Reporting Person, nor any executive officer or director of such Reporting Person, has been convicted during the last five years in any criminal proceeding (excluding traffic violations or similar misdemeanors). Further, to the knowledge of each Reporting Person, neither such Reporting Person, nor any executive officer or director of such Reporting Person, has been a party during the last five years to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violation of, or prohibiting or mandating activities subject to, U.S. federal or state securities laws, or finding any violation with respect to such laws. See Schedule A for certain information as to the executive officers and directors of each Reporting Person. For further explanation of the background of the arrangements relating to ownership of Common Shares, see the "Explanatory Note" above. Not applicable. See Item 5(c) for a discussion of certain transactions by the Reporting Persons in the Common Shares. Thomson Investments Limited, Woodbridge and the other Reporting Persons plan to maintain their controlling interest in Thomson Reuters. From time to time, each of the Reporting Persons may acquire or dispose of Common Shares for liquidity and other reasons. Although there are currently no plans or proposals other than with respect to the acquisition or disposition of less than one half of one percent of the outstanding Common Shares for liquidity or other reasons as noted above, the Reporting Persons may consider or develop plans or proposals in the future that relate to items (a) through (j) below. This may include, but not be limited to, increasing or decreasing their investment in Common Shares and/or engagement with Thomson Reuters, other shareholders, advisors or third-parties with respect to Thomson Reuters' strategy, corporate governance including director nominees, capital structure and strategic alternatives. Except as disclosed herein, none of the Reporting Persons nor, to the knowledge of the Reporting Persons, their respective directors and executive officers, has any plans or proposals that relate to or would result in: (a) the acquisition by any person of additional securities of Thomson Reuters, or the disposition of securities of Thomson Reuters; (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving Thomson Reuters; (c) a sale or transfer of a material amount of assets of Thomson Reuters; (d) any change in the present Board or management of Thomson Reuters, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the Board; (e) any material change in the present capitalization or dividend policy of Thomson Reuters; (f) any other material change in Thomson Reuters's business or corporate structure; (g) changes in the charter, bylaws or instruments corresponding thereto of Thomson Reuters or other actions which may impede the acquisition of control of Thomson Reuters by any person; (h) causing a class of securities of Thomson Reuters to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association; (i) a class of equity securities of Thomson Reuters becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Securities Exchange Act of 1934; or (j) any action similar to any of those enumerated above. On April 15, 2026, Woodbridge announced that its new President and CEO, Michael Medline will stand for election to the board of directors of Thomson Reuters (the "Board") at the upcoming annual meeting of shareholders to be held on June 10, 2026 (the "AGM"). Following his election, Mr. Medline will serve on the Board as a representative of Woodbridge. Information regarding Mr. Medline is included in Thomson Reuters' management proxy circular for the AGM. Under a Third Amended and Restated Thomson Reuters Trust Principles Support Agreement, dated as of October 1, 2018, between Woodbridge and Thomson Reuters Founders Share Company Limited (attached as Exhibit 4), Woodbridge has agreed to support the Thomson Reuters Trust Principles (the "Trust Principles") and to exercise its voting rights to give effect to this support and the Thomson Reuters Founders Share Company has irrevocably designated Woodbridge as an approved person for so long as Woodbridge is controlled by members of the Thomson family, companies controlled by them and trusts for their benefit. The Trust Principles read as follows: _ That Reuters shall at no time pass into the hands of any one interest, group or faction; _ That the integrity, independence and freedom from bias of Thomson Reuters shall at all times be fully preserved; _ That Reuters shall supply unbiased and reliable news services to newspapers, news agencies, broadcasters and other media subscribers and to businesses, governments, institutions, individuals and others with whom Reuters has or may have contracts; _ That Thomson Reuters shall pay due regard to the many interests which it serves in addition to those of the media; and _ That no effort shall be spared to expand, develop and adapt the news and other services and products of Thomson Reuters so as to maintain its leading position in the international news and information business. See cover pages of this Amendment for each of the Reporting Persons and Schedule A for each of the directors and executive officers of the Reporting Persons. See cover pages of this Amendment for each of the Reporting Persons and Schedule A for each of the directors and executive officers of the Reporting Persons. None of the Reporting Persons has effected any transactions in Common Shares during the past 60 days, except as set forth below. On March 10, 2026, 1396164 Ontario Limited acquired 96,913 Common Shares pursuant to the Thomson Reuters Amended and Restated Dividend Reinvestment Plan (the "DRIP"). The following entities (each a "Participating Entity" and collectively the "Participating Entities") sold Common Shares in the open market between March 18, 2026 and March 20, 2026: LCC Investments Corp. sold 190,400 Common Shares; 1000421133 Ontario Limited sold 12,006 Common Shares; GED Investments Corp. sold 53,101 Common Shares; JRD Investments Corp. sold 44,493 Common Shares; SEG Investments Corp. sold 175,000 Common Shares; BG Investments Corp. sold 50,000 Common Shares; DYM Investments Corp. sold 25,000 Common Shares; and 2808194 Ontario Limited. sold 50,000 Common Shares. On each of March 18, 19 and 20, 2026, 200,000 Common Shares were sold by the Participating Entities on a collective basis (with sales allocated among them pro rata). On March 18, 2026, 125,000 Common Shares were sold on a US exchange at an average price of $94.08 and 75,000 Common Shares were sold on a Canadian exchange at an average price of C$128.97. On March 19, 2026, 125,000 Common Shares were sold on a US exchange at an average price of $93.24 and 75,000 Common Shares were sold on a Canadian exchange at an average price of C$128.06. On March 20, 2026, 135,000 Common Shares were sold on a US exchange at an average price of $92.94 and 65,000 Common Shares were sold on a Canadian exchange at an average price of C$127.34. Additionally, on March 20, 2026, the following entities sold Common Shares to an affiliated entity, DKRT Family Corp., in a private transaction: LCC Investments Corp. sold 57,764 Common Shares, LLD Investments Corp. sold 4,513 Common Shares, JRD Investments Corp. sold 16,059 Common Shares, GED Investments Corp. sold 19,166 Common Shares and SEG Investments Corp. sold 97,502 Common Shares. These Common Shares were sold pre-market open at a price of C$128.20 per Common Share, which reflects the closing price of the Common Shares on the Canadian exchange the day prior to the sale. On April 16, 2026, 1000706525 Ontario Limited transferred 13,550,000 Common Shares to 1908720 Ontario Limited for consideration consisting of 690 common shares of 1908720 Ontario Limited. None of the executive officers or directors of the Reporting Persons has effected any transactions in Common Shares during the past 60 days, except as set forth below. On March 12, 2026, Michael Medline, CEO and President of Woodbridge, acquired 3,644 Common Shares in the open market. On March 15, 2026, Peter J. Thomson, Director and Co Chairman of Woodbridge, acquired 134 Common Shares as compensation for serving as director of Thomson Reuters. Not applicable. Not applicable. Item 6 is hereby amended to add the following: As of April 17, 2026, David K. R. Thomson, Peter J. Thomson and Michael Friisdahl hold 135,916, 17,928 and 1,596 deferred share units ("DSUs"), respectively, issued to them by Thomson Reuters for compensation for service as a director of Thomson Reuters. Each DSU has the same value as one Common Share, though DSUs do not have voting rights. DSUs accumulate additional units based on notional equivalents of dividends paid on Common Shares. DSUs are fully vested upon grant, but they are only settled in Common Shares or, at the election of Thomson Reuters, in cash, following termination of the director's board service in respect of Thomson Reuters. Any Common Shares delivered to a director of Thomson Reuters in connection with the settlement of DSUs are purchased in the open market. Exhibit 1 - Joint Filing Agreement. Exhibit 2 - Power of Attorney. Exhibit 3 - Schedule A. Exhibit 4 - Third Amended and Restated Thomson Reuters Trust Principles Support Agreement, dated as of October 1, 2018, between Woodbridge and Thomson Reuters Founders Share Company Limited. THOMSON INVESTMENTS LIMITED /s/ Michael Medline 04/17/2026 THE WOODBRIDGE COMPANY LIMITED /s/ Michael Medline 04/17/2026 1908720 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 1000706525 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 1396164 Ontario Limited /s/ Michael Medline 04/17/2026 1925124 Ontario Limited /s/ Michael Medline 04/17/2026 Woodbridge Investments Corporation /s/ Michael Medline 04/17/2026 KRT INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 DKRT FAMILY CORP. /s/ Michael Medline 04/17/2026 DKRT INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 DKRT FUNDING CORP. /s/ Michael Medline 04/17/2026 1000920847 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 MB FINANCE CORP. /s/ Michael Medline 04/17/2026 TT INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 TLT INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 TLT ISSUE HOLDCO A CORP. /s/ Michael Medline 04/17/2026 TLT ISSUE HOLDCO CORP. /s/ Michael Medline 04/17/2026 1761173 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 2677295 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 1000919995 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 1754693 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 PJT INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 1000920848 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 PGF INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 PGF FAMILY CORP. /s/ Michael Medline 04/17/2026 LCC INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 1000078931 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 1000421133 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 LLD INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 2806335 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 JRD INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 2754783 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 GED INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 SEG INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 1000031857 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 SEG FAMILY CORP. /s/ Michael Medline 04/17/2026 TCM INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 DYM INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 BG INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 ACG INVESTMENTS CORP. /s/ Michael Medline 04/17/2026 1001404651 ONTARIO LIMITED /s/ Michael Medline 04/17/2026 2808194 ONTARIO LIMITED /s/ Michael Medline 04/17/2026