Julius Genachowski announced on Friday that he will be stepping down as Chairman of the Federal Communications Commission, a position he has held since 2009. During his tenure, Genachowski supervised the regulation of radio, television, broadband, wired and wireless communications within the United States. He also attempted to free up additional spectrum for wireless carriers and oversaw the proposed merger between AT&T and T-Mobile.

“Over the past four years, we’ve focused the F.C.C. on broadband, wired and wireless, working to drive economic growth and improve the lives of all Americans,” he said. “Today, America’s broadband economy is thriving, with record-setting private investment; unparalleled innovation in networks, devices and apps; and renewed U.S. leadership around the world.”

The Chairman said he will step down from his current position “in the coming weeks.”