Shuichi Takanashi

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.

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.

SPiRE, Inc. (Japan) engages in mobile advertising, media, and electronic commerce businesses. It operates through the Mobile Advertising and Media segments. The Mobile Advertising segment offers mobile media representative and mobile advertising agency services. The Media segment provides mail and content, marketing promotion, internet research, and smartphone application development services. The company was founded on October 6, 1997 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.