Hayato Sozaka

D. A. Consortium, Inc. engages in online media transaction related business. It purchases and sells advertising space; and provides diversified advertising service and content marketing. The company was founded on December 2, 1996 and is headquartered in Tokyo, Japan.

D.A. Consortium Holdings, Inc. operates as a holding company that engages in the management of its subsidiaries operating online advertising and related businesses. It operates through the following business segments: Internet-related and Investment. The Internet-related segment handles the Internet advertising business and solutions business supporting in enterprise marketing. The Investment segment covers venture capital investments. The company was founded on October 3, 2016 and is headquartered in Tokyo, Japan.

Hakuhodo DY Media Partners, Inc. engages in media and digital contents business. It designs media strategies through media planning, producing, buying, traffic, and knowledge services for advertisers, and media and content owners. The firm’s business activities include advertising, sales promotion, and public relations involving newspapers, magazines, television, the Internet, outdoor, and other media; design oversight and construction of outdoor advertising installations, exhibition spaces, interiors, and advertising and public relations structures; advertising research; publication and sale of books and periodicals; planning construction, and staging of events and performances; and planning, creation, production, sale, and rental of sound and visual software. The company was founded on December 1, 2003 and is headquartered in Tokyo, Japan.

IREP Co., Ltd. engages in the digital marketing business. Its services include paid listing, search engine marketing (SEM), mobile SEM, web analytics, and internet advertising. The company was founded by Masayuki Takayama in November 1997 and is headquartered in Tokyo, Japan.