SECURITIES AND EXCHANGE COMMISSION WASHINGTON,D.C. 20549 FORM 20-F (MarkOne) Commission file number: 000-56830 Brookfield Business Corporation (Exact name of Registrant as specified in its charter) N/A None Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report: As of December31, 2025, there were 87,720,678 Limited Partnership Units of Brookfield Business Partners L.P. outstanding 207,007,465 Class A Subordinate Voting Shares 4 Class B Multiple Voting Shares 4 Special Non-Voting Incentive Shares Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule405 of the SecuritiesAct.YesNo☐ If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section13 or15(d) of the Securities Exchange Actof1934.Yes☐No☒ Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or15(d) of the Securities Exchange Act of 1934 during the preceding12months (orfor such shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past 90days.Yes☒No☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of RegulationS-T (§232.405of this chapter) during the preceding 12months (orfor such shorter period that the registrant was required to submit and post suchfiles).Yes☒No☐ Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See definitions of“accelerated filer”, “large accelerated filer,” and “emerging growth company” in Rule12b-2 of the Exchange Act. (Checkone): If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extendedtransition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification afterApril 5, 2012. If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correctionof an error to previously issued financial statements.☐ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’sexecutive officers during the relevant recovery period pursuant to §240.10D-1(b).☐ Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in thisfiling: If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected tofollow.Item17Item18 If this is an annual report, indicate by check mark whether the registrant is a shell company (asdefined in Rule12b-2 of the Exchange Act).Yes☐No☒ EXPLANATORY NOTEThis Annual Report on Form 20-F is being filed by Brookfield Business Corporation (formerly 1559985 B.C. Ltd.), a corporation existing under the laws of British Columbia (the “Registrant”), on behalf of and as successor to Brookfield Business Partners L.P. (“BBU”). TheRegistrant is deemed to be the successor to BBU and Brookfield Business Holdings Corporation (“BBHC”) pursuant to Rule 12g-3(c) underthe Securities Exchange Act of 1934, as amended (the “Exchange Act”). Following the Arrangement (as defined below) the class A subordinatevoting shares of the Registrant (the “Class A Shares”) are deemed to be registered under Section 12(b) of the Exchange Act. Pursuant to Rule12g-3(g) under the Exchange Act, this Annual Report onForm 20-F includes disclosure in respect of the last full fiscal year of BBU prior to the Arrangement and generally contains information that would be required if filed by BBU, in addition to information regarding the Registrant, as successor to BBU. Unless otherwise indicated or thecontext otherwise requires, historical financial results presented herein are those of BBU. On November 6, 2025, BBU, BBHC and the Registrant entered into an arrangement agreement pursuant to which, among other things, theparties agreed to implement a reorganization under the laws of the Province of British Columbia (the “Arrangement”) to simplify BBU’s andBBHC’s corporate structure by converting BBU and BBHC into a single publicly traded corporate entity. The Arrangement was completed onMarch 27, 2026, following which BBU and BBHC became subsidiaries of the Registrant. It is ex




