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About Me

Jason Yeh is an early-stage technology company investor based in Berlin, Germany, where he invests via the investment entity he founded called Leaf Ventures.

Previously, Jason worked at LA-based video game company Riot Games for over 8 years, serving most recently as the Head of Esports and Managing Director for Riot's Berlin office, and previously as Head of International Publishingat  Riot's Los Angeles HQ.

Prior to joining Riot Games, Jason worked as a venture capital investor at FirstMark Capital, a $2bn venture capital firm based in New York City. He primarily focused on making investments in the digital media and consumer internet space, and supported investments in online gaming companies Riot Games and Lumos Labs.

Jason completed his undergraduate studies at the University of Pennsylvania, where he was part of the Huntsman Program in International Studies and Business dual-degree program with Wharton concentrations in Finance and Entrepreneurial Management.

Work experience

Aug 2017Present

Founder & Managing Director

Leaf Ventures, LLC
  • Establish and serve as Managing Director for this investment management company overseeing and supporting direct private company investments made by the Yeh/Le Revocable Trust
  • Source and evaluate new investment opportunities and make investment decisions for the entity
  • Provide post-investment support in areas focused on leadership recruiting, product strategy and international launch/expansion planning
  • Select investments include:
    • Deliveroo - Food delivery service (Series B, Dec 2014)
    • Edenworks - Indoor agriculture technology (Seed, Dec 2016)
    • Glo - Social virtual reality content and venues (Series A, Jul 2017)
Jul 2009Oct 2017

Head of EU Esports

Riot Games

Nov 2013 - Oct 2017: Head of EU Esports 

  • Establish and serve as Managing Director of Riot Games' German entity Riot Games Services GmbH
  • Oversee Riot Games' European Esports operations, responsible for building and managing the team, owning and driving strategic direction, and collaborating and supporting other Riot teams and leadership in the European region
  • Serve as the Product Owner for the EU LCS professional League of Legends league, managing an investment into Esports operations of over €50mm over a 4 year span

Jul 2010 - Oct 2013: Head of International Publishing

  • Support the launch of League of Legends in international markets, with a strong focus on expansion into China, Taiwan, Southeast Asia, Brazil, Turkey and Russia
  • Manage Riot's external publishing partnerships with Tencent (China) and Garena (Taiwan & Southeast Asia)
  • Hire and manage LA-based team responsible for serving as the primary connection and support between Riot's regional publishing offices and RIot's Central publishing team based in LA
  • Support the setup of the Central-Local decentralized publishing model which is critical to the launch and operation of League of Legends worldswide.
  • Evaluate opportunities to launch League of Legends into new markets, with a focus on the Japanese and Indian markets

Jul 2009 - Jun 2010: Product Marketing Manager

  • Support the creation and execution of the initial launch plan for League of Legends in the North American and European markets
  • Manage Riot's European publishing partnership with GOA/France Telecom
  • Manage Riot's China publishing partnership with Tencent and supporting planning for the initial League of Legends launch in China
  • Own and operate Riot's online customer acquisition campaigns through channels such as Google AdWords, Facebook and performance ad networks
  • Serve as key team member on Riot's monetization team, to inform and determine decisions made relating to virtual goods pricing and promotions and overall business model approach
  • Oversee creative content production including projects such as the first CG trailer, the first iPhone game
Oct 2007Jun 2009


FirstMark Capital
  • Find new investment opportunities in the emerging media and Internet space, specifically social media, online gaming and online advertising
  • Perform industry and company due diligence on investments made in online gaming companies Riot Games and Lumos Labs
  • Work with portfolio companies in a variety of business development and strategy rolls
  • Live Gamer: Identify potential distribution partners and strategic acquisition candidates; evaluate the financial implication of potential game publisher agreements
  • Lumos Labs: Aid in development of social media strategy; work with developer to build and optimize Lumosity Facebook application
Jul 2006Oct 2007


Oliver Wyman
  • Major Grocery Chain pricing strategy - Worked with pricing team to develop new zone-based pricing scheme to be applied to all stores; built pricing tool that pricing analysts used on a daily basis to check and modify item pricing across all stores
  • Major Software Company product strategy - Worked with internal strategy team to design a survey and analyze survey data to determine video syndication strategy for consumer Internet business
  • Major Software Company product strategy - Worked with internal product team to analyze competitive landscape and develop internal strategy around online productivity tools and services
  • Major Cable Company - Collected and analyzed data around high speed data customer acquisition and churn and designed survey to understand how to optimize customer acquisition and retention through additional product offerings and product bundling
May 2004Sep 2004

Strategy & Planning Analyst

Ogilvy & Mather
  • Worked with strategy & planning team around determining integration strategy for eBay-EachNet after eBay acquired the leading Chinese online auction site EachNet
  • Member of the head creative team within Ogilvy & Mather Shanghai and worked as copywriter to develop ad creative storyboards for clients such as the Shanghai World Expo 2010, eBay, Dannon and Tsingtao Beer
  • Worked with Ogilvy Worldwide PR team to plan and coordinate events clients such asthe BAR (British American Racing) Honda F1 team and Vertu


Sep 2002May 2006


University of Pennsylvania
  • Undergraduate Student in the Huntsman Program in International Studies and Business, a dual-degree undergraduate program between the Wharton School of Business and the College of Arts and Sciences
  • Wharton concentrations in Finance and Entrepreneurial Management
  • College concentration in East Asian Studies and language concentration in Mandarin Chinese
  • Graduated Cum Laude
Aug 2004Jan 2005

Semester Abroad (part of Huntsman Program)

Peking University
  • Direct enrollment in the School of International Relations at Peking University as part of the Huntsman Program curriculem
  • Took courses taught entirely in Mandarin Chinese with local students and faculty
  • Took courses in New Media in China, US-China Trade Relations, China-Taiwan Foreign Relations, History of China-Japan Relations and History of Chinese Art