The Regional Ports Management Authority (RPMA) was devolved by virtue of an Presidential Executive Order No. 435 issued by then President Fidel V. Ramos and DOTC DO 97-113 to the Autonomous Regional Government (ARG), ARMM on August 28, 1997. The Regional Ports Authority (RPA) in Autonomous Region in Muslim Mindanao (ARMM) is under the Office the Regional Governor of ARMM. Consequently, on September 16, 2002 President Gloria M. Arroyo issued Executive order No. 125 for the enhancement of the devolved powers and functions, programs and projects of National Government Agencies to the Autonomous Region Government.
The Regional Ports Authority (RPA) under the Executive Order No. 11 signed by the Regional Governor Prof. Nur P. Misuari which was organized as an interim body and was reorganized into the Regional Ports Management Authority Strengthening it and for other purposes by amending it through Executive Order No. 2, Series of 2002, signed by then Regional Governor Parouk S. Hussin.
RPMA is one of the locally funded agencies of the ARMM and the only government – owned and controlled corporations (GOCC) of the ARMM. This is the legal basis of the existing REGIONAL PORTS MANAGEMENT AUTHORITY (RPMA).