Table of Contents Washington, D.C. 20549 FORM 10-Q (MARK ONE) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter ended June 30, 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 UNITED STATES SECURITIES AND EXCHANGE COMMISSION (Exact Name of Registrant as Specified in Its Charter) Cayman Islands 98 ...

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 ...