Department of Transport director-general Reece Waldock is set to retire in July.
Mr Waldock was appointed the inaugural chief executive of the Public Transport Authority of WA in 2003.
David Putnam has resigned as interim chief executive officer of Western Mining Network. Mr Putnam has served as interim CEO since the past nine months.
South West Development Commission chief executive officer, Don Punch, has announced his retirement.
Mr Punch will be departing on July 1, 2016, after nearly 18 years with SWDC.
The Youth Affairs Council of Western Australia has appointed Ross Wortham chief executive officer.
Mr Wortham started with YACWA in January as director, policy and advocacy.
Volunteering WA has appointed Tina Williams chief executive officer.
Ms Williams was previously the marketing and development manager for the Women and Infants Research Foundation.
Robert S Middlemas has resigned as non-executive director of Elemental Minerals, after 6 years with board both as a non-executive director and previously as a non-executive chairman.
The South West Development Commission has appointed Sue Daubney as deputy chair to replace former Busselton Mayor Ian Stubbs who left the board after stepping down from his role on the council.
Wellard has appointed Brendan Wade chief operating officer.
Mr Wade left Landmark last year, after serving as its livestock manager in Queensland and northern New South Wales.
Ernest Massawe has resigned as a director of Swala Energy. Mr Massawe has been a non-executive director of the company since its incorporation in early 2013.
Perth-founded stock investing platform Simply Wall St has been ranked as Techboard's top startup for the past fortnight, making it the first ever company to have topped the ranking twice after having previously topped the list in December last year.
The Black Swan State Theatre Company has announced that Clare Watson will succeed outgoing artistic director Kate Cherry when Ms Cherry leaves the company at the end of the year