Washington, D.C. 20549 FORM 10-Q (MARK ONE) UNITED STATES SECURITIES AND EXCHANGE COMMISSION Table of Contents ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 001-42383 OAKTREE ACQUISITION CORP. III LIFE SCIENCES (Exact Name of Registrant as Specified in Its Charter) Cayman Islands 9 ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ______________ to ______________ Commission file number 001-42383 Oaktree Acquisition Corp. III Life Sciences (Exact Name of Registrant as Specified in Its Charter) Cayman Islands 98-1799512 State or other jurisdiction of incorporation or organization FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 ...