ClearSign Technologies Corp., a developer of emission-control technology, announced David Maley, chief investment officer and chief compliance officer of family office 1102 Partners, was appointed to its board of directors.

Earlier, Maley served as a senior vice president at Ariel Investments, where he was lead portfolio manager for the Ariel micro-cap value product fund and the Ariel small-cap deep value product fund.

Prior to that, he founded and ran Maple Hill Capital Management and served as a vice president and senior portfolio manager for high-net-worth clients at Harris Bank.