Oroco Resource Corp. — Board/Management Information 2026

Apr 1, 2026

FORM 51-102F3 - MATERIAL CHANGE REPORT

1. NAME AND ADDRESS OF COMPANY
   Oroco Resource Corp.

1201 – 1166 Alberni Street

Vancouver, British Columbia
V6E 3Z3

1. DATE OF MATERIAL CHANGE
   March 27, 2026

2. NEWS RELEASE
   News release dated March 30, 2026 was disseminated via GlobeNewswire and filed on SEDAR+

3. SUMMARY OF MATERIAL CHANGE
   The Company announced the resignation of Richard Lock as Chief Executive Officer and director of the Company effective April 30, 2026.

4. FULL DESCRIPTION OF MATERIAL CHANGE
   The Company announced the resignation of Richard Lock as Chief Executive Officer and director of the Company effective April 30, 2026.

5. RELIANCE ON SUBSECTION 7.1(2) OF NATIONAL INSTRUMENT 51-102
   Not applicable.

6. OMITTED INFORMATION
   Not applicable.

7. EXECUTIVE OFFICER
   Craig Dalziel, Chairman
   Tel: 604-688-6200

8. DATE OF REPORT
   March 31, 2026