Mediamath's Asia vice-president of commercial Zachary King is departing the business.
King, who has been in the role for nearly four years, will depart the adtech firm by the end of today (December 29).
King is well-known in the adtech community in Asia and has been a prominent member of the IAB Southeast Asia and India, previously as co-chair of the trade body's Programmatic Committee.
He joined Mediamath in 2016 from Sydney-based adtech startup Oomph, where he was also VP of commercial.
The commercial boss announced his imminent departure on LinkedIn. He is moving back to his home country of Australia.
Mediamath said in a statement that it "continues to focus on Asia" and that it "will share updates on the regional leadership team as soon as they [sic] are ready".