Composition and Naming of Region IV-A (CALABARZON)
- Named CALABARZON, Region IV-A comprises the following provinces: Batangas, Cavite, Laguna, Quezon, and Rizal.
- The cities included in Region IV-A are Antipolo City, Batangas City, Calamba City, Cavite City, Lipa City, Lucena City, San Pablo City, Tagaytay City, Tanauan City, and Trece Martires City.
Composition and Naming of Region IV-B (MIMAROPA)
- Named MIMAROPA, Region IV-B consists of the provinces of Marinduque, Mindoro Occidental, Mindoro Oriental, Palawan, and Romblon.
- The cities included in Region IV-B are Calapan City and Puerto Princesa City.
Transfer of the Province of Aurora to Region III
- The Province of Aurora is officially transferred from Region IV and becomes part of Region III.
Supervisory Role of the Department of the Interior and Local Government (DILG)
- The DILG is tasked with overseeing and supervising the implementation of the division of Region IV into Regions IV-A and IV-B.
- The DILG also supervises the transfer of the Province of Aurora to Region III.
Repeal and Modification of Inconsistent Orders
- All existing orders, rules, regulations, and issuances that conflict with this Executive Order are repealed or modified as necessary.
Effectivity Clause
- This Executive Order becomes effective immediately upon its approval.