Jason Calacanis

In June, 2019, Calacanis partnered with the NSW Government to create the Sydney Launch Festival for startups to give their pitches to global audiences.

Calacanis publicly announced in 2018 that he had sold all of his Facebook stock, expressing sharp criticism of company CEO and co-founder Mark Zuckerberg on the Too Embarrassed to Ask podcast. He called Zuckerberg "completely immoral" in how he runs the business and said, "No founder should ever sell a company to him."

In 2018, Calacanis invested in Calm, a meditation app that is valued at $1 billion.

Calacanis authored a book titled "Angel: How to Invest in Technology Startups—Timeless Advice from an Angel Investor Who Turned $100,000 into $100,000,000" on angel investing published by HarperCollins in 2017.

Calacanis founded ThisWeekIn.com, which shut down in 2012 but is live again and available as a weekly podcast.

He launched the web directory Mahalo ("thank you" in Hawaiian), which raised $20 million in venture capital from investors including Sequoia Capital, News Corp, CBS, Mark Cuban, and Elon Musk. The company hit a peak of 15 million unique visitors a month and achieved profitability in 2011, but suffered a sharp decline in traffic that year from the Google Panda search algorithm update and shut down in 2014.

In 2009, Calacanis founded the Open Angel Forum, an event that connects early-stage startups with angel investors. The forum was the culmination of a series of public comments by Calacanis questioning the ethics of pay-to-pitch angel forums. Calacanis believes startups shouldn't have to pay to pitch angel investors, calling out fees that can range from $1,000 to $8,000 for a single 10- or 15-minute presentation. Calacanis is an angel investor in Robinhood, Wealthfront, Uber, Desktop Metal, Datastax, Thumbtack, Superhuman and Trello.

On November 16, 2006, TechCrunch reported that Calacanis had resigned from his position as CEO of Weblogs, Inc. and general manager of Netscape. Calacanis later confirmed this on his blog and the Gillmor Gang podcast.

Calacanis joined Sequoia Capital, a venture capital firm, as an EIA (entrepreneur in action) in December, 2006,a position which he held until May, 2007. Through this program, Calacanis invested $25K in Travis Kalanick's company, Uber. The deal is now worth about $100 million.

Two years after inception, the Weblogs, Inc. blogs business was generating $1,000 a day just from AdSense. Time Warner's America Online agreed to buy Weblogs, Inc. in October 2005 for $25–30 million.

As a blogger, Calacanis co-founded the blog network Weblogs, Inc. with Brian Alvey. They founded Weblogs, Inc. in September 24, 2003, and the startup was supported by an angel investment from Mark Cuban.

Before forming Weblogs, Inc., Calacanis was founder and CEO of Rising Tide Studios, a media company that published print and online publications. During the dot-com boom, Calacanis was active in New York's Silicon Alley community, and in 1996 began producing the Silicon Alley Reporter. Originally a 16-page photocopied newsletter, it eventually expanded into a 300-page magazine, with a sister publication called the Digital Coast Reporter for the West Coast. Calacanis' socializing earned him a nickname as the "yearbook editor" of the Silicon Alley community. The company also organized conferences in New York, Los Angeles, and San Francisco focused on the Internet, web, and New Media. With the end of the Dot-com bubble, Silicon Alley Reporter failed, and the company was sold out of bankruptcy to a private equity firm.

Calacanis started his career in the 1990s as a reporter covering the internet industry in New York.

He graduated from Xaverian High School in 1988. He then attended Fordham University, where he received a B.A. in psychology.

Jason McCabe Calacanis (born November 28, 1970) is an American Internet entrepreneur, angel investor, author and podcaster.