Yet another iAd executive has departed Apple. Mike Owen, senior manager of the iAd New York office, is leaving. He is headed to mobile video advertising network AdColony as its chief revenue officer. The iAd service has now seen three key departures in less than a year. Former head Andy Miller left last year for Highland Capital and was replaced by Todd Teresi. Lars Albright, iAd co-creator and former Quattro founder, left to form SessionM, a mobile advertising startup.