Media House Holdings Corporation (Headquarters: Shinjuku-ku, Tokyo; President and CEO: Keisuke Hatouchi, hereinafter "the Company") is pleased to announce that it has entered into a business transfer agreement on February 13, 2026, to acquire the web advertising operations business conducted by WEBOSS Corporation (Headquarters: Chuo-ku, Sapporo, Hokkaido; Representative Director: Shinji Hayashibara, hereinafter "WEBOSS"). The business acquisition was completed on March 31, 2026. Through this acquisition, the Company will strengthen its marketing support system in the Hokkaido area and expand its business foundation towards realizing its mission of "Energizing small and medium-sized enterprises nationwide." Background and Purpose of Business Acquisition Media House Holdings Corporation, with its mission of "Energizing small and medium-sized enterprises nationwide," operates a wide range of businesses nationwide, including marketing support, web advertising operations support, and human resource recruitment support. Meanwhile, WEBOSS has been developing its web advertising operations business, primarily in the Hokkaido and Sapporo areas, and has an extensive track record in supporting the growth of local companies. Leveraging its expertise in supporting over 300 industries, it has provided highly specialized internet advertising operation services. Furthermore, it has staff with Google Partners certification and strengths in operating Google Ads, Yahoo! Ads, and Meta Ads. Through this business acquisition, by integrating WEBOSS's customer base, sales channels, organization, human resources, and operational know-how with Media House Holdings Corporation's sales capabilities, marketing capabilities, and new business development capabilities, we aim to further strengthen our web marketing support system in the Hokkaido area and enhance the value provided to local companies. Synergies from this Transaction 1. Strengthening of Advertising Operations Business By integrating