David Y. Ko

Yahoo!, Inc. is a guide to digital information discovery, focused on informing, connecting, and entertaining users through its search, communications, and digital content products. It operates through the following geographical segments: Americas; Europe, Middle East, and Africa (EMEA); and Asia Pacific. The company was founded by Jerry Chih-Yuan Yang and David Filo in January 1994 and is headquartered in Sunnyvale, CA.

Rally Health, Inc. provides a personal health management platform that enables consumers to record fitness goals, research conditions, access health tools and even communicate directly with other members and medical professionals. Its flagship products, Zensey, is a gamified health social network and employee wellness program. Zensey consists of a place for patients to aggregate health data from providers and an anonymous forum to discuss health concerns with other members, as well as connections to various smartphone-enabled health devices. The company was founded by Gran Lovely Verstandig in 2010 and is headquartered in Washington, DC.

Zynga, Inc. provides social game services. It develops, markets and operates social games as live services played on mobile platforms such as Apple's iOS operating system and Google's Android operating system, and social networking sites such as Facebook. It offers Chess with Friends, Crazy Cake Swap, Draw Something, FarmVille, Gems with Friends, Ice Age: Arctic Blast, Looney Tunes Dash, Speed Guess Something, What's The Phrase, Wizard of Oz Magic Match, Yummy Gummy, Free Slots, Black Diamond Casino, Hit It Rich, Zynga Poker and Willy Wonka Slots. The company was founded by Mark Jonathan Pincus on April 19, 2007, and is headquartered in San Mateo, CA.

Calm.com, Inc. operates an online portal which allows busy and information loaded web workers to reduce stress. It also develops the smart phone based application. The company was founded by Alex Tew and Michael Acton Smith in 2012 and is headquartered in San Francisco, CA.

Part of Calm.com, Inc., Ripple Health Group, Inc. provides healthcare technology services. The company is based in San Francisco, CA. The company was founded in 2019 by David Y. Ko, Rhett Woods, Anastasios Kasiolas. David Y. Ko has been the CEO since 2019. Ripple Health Group was acquired by Calm.com, Inc. on February 02, 2022.