Lisa Costigan is an experienced auditor attached to the Internal Audit Division of the National Superannuation Fund Limited. She is Certified Practising Accountant PNG and an Associate of the Institute of Internal Auditors Australia.

Mrs. Costigan has experience working in audits, risk and compliance and in assurance. She is currently President of The Badili Club of PNG Inc.; a Council Member of CPA PNG; Chairperson of the Board of Governors of Koroboro International School; and a member of the Board of Governors of Port Moresby International School; She holds a Bachelor of Business (Accounting) from Pacific Adventist University and a Masters in Business Administration from Torrens University, Australia.