SYDNEY — WPP’s government and public sector practice has appointed Michael Harris as executive director, Australia and New Zealand. Harris (pictured) will be based in Sydney and replaces Kathryn Cooper who has returned to the US.

PERTH — Citadel-MAGNUS has named Paul Ryan director in the firm’s Perth office. Ryan brings extensive experience in the oil and gas and agriculture sectors, where he developed a strong track record of managing corporate reputations in challenging regulatory and stakeholder environments. He most recently served as external relations manager at Shell Australia, where he was responsible for the management of non-technical risk and reputation of Shell’s upstream assets.

SINGAPORE — APCO Worldwide bolstered its expertise in Southeast Asia by hiring senior experts Stephanie Tan and Ayesha Khan to lead the region’s health care and corporate affairs practices respectively. Tan brings more than 10 years of strategic corporate and health care communications experience to APCO and most recently served as a senior member of Spurwing Communications’ health care practice. Khan joins as a managing consultant from Burson Cohn & Wolfe, where she was a senior member of the firm’s corporate and public affairs team.