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Josh Kushner’s New York-based Thrive Capital, with participation from GGV, Comcast Ventures and existing investors Accel, Index Ventures and Social Capital. Slack is a team communication application providing services such as real-time messaging, archiving, and search for modern teams. The app offers one-on-one messaging, private groups, persistent chat rooms, and direct messaging as well as group chats organized by topic. All content inside Slack is searchable from one search box and it integrates with a number of third-party services, including Google Docs, Dropbox, Heroku, Crashlytics, GitHub, and Zendesk. Slack was launched in 2013 by Serguei Mourachov, Eric Costello, Cal Henderson, and Stewart Butterfield. The app is available for Mac, PC, iOS, and Android. “We are taking this opportunity to further secure our leadership position as we continue to execute on our ambitious growth plans,” said Slack co-founder and CEO Stewart Butterfield. “This capital adds to our existing reserves and increases our ability to focus on an uncompromising long-term, strategic view.” “We are excited to partner with Slack as it continues to re-imagine how teams work together,” said Josh Kushner, managing partner at Thrive Capital. “We believe Slack will define the future of seamless communication in an increasingly complex world across platforms, teams and applications.” Kushner is also the co-founder of New York-based Oscar Health Insurance, a startup that employs technology, design, and data to humanize health care, which is said to have raised last month a $400 million private equity investment led by mutual fund giant Fidelity Investments, valuing Oscar at $2.7 billion. He is one of the sons of real estate magnate Charles Kushner, a native of Livingston, New Jersey. His brother, Jared Kushner, heads the family’s real estate empire, and is married to Ivanka Trump, daughter of presidential candidate Donald Trump. After graduating from Harvard University and Harvard Business School a few years ago, Josh Kushner started his career in the Private Equity Group at Goldman Sachs, Merchant Banking Division, but left after a short stint to found Thrive Capital in 2009. Thrive Capital is a venture capital investment firm focused on media and internet investments. Thrive has raised $600 million in four funds, from institutional investors including Princeton University, Wellcome Trust, Hall Capital and numerous other endowments. The firm has made investments in more than 70 companies. According to a profile in Forbes, Thrive was one of three firms, joining Sequoia Capital and Greylock Partners, to invest in Instagram’s $50 million Series B round at a valuation of $500 million. Forbes wrote that after Instagram sold to Facebook, “Thrive had doubled its money in 72 hours.” Photo: (L-R) Instagram CEO Kevin Systrom, with Thrive Capital Managing Partner Josh Kushner.]]>