Spark New Zealand Ltd. added Heather Polglase to the Spark Leadership Squad, naming her the group human resources director, effective Sept. 1.

Polglase, who joined the company in 2013, will succeed Joe McCollum, who is stepping down after seven years in the role.

Andrew Pirie, Spark's corporate relations lead, will also leave the company in December, with a successor to be appointed in due course, according to a news release.