Mason owns 7.6% and Keywell 6.8%.

梅森拥有7.6%，而基维尔拥有6.8%。

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Then, with a friend he'd met in law school, Brad Keywell, Lefkofsky bought a Wisconsin company called Brandon Apparel Group.

随后，莱夫·科夫斯基同他在法学院结识的朋友布拉德•基威尔一起，买下了一家威斯康辛州的公司，名为布兰顿服装公司(Brandon Apparel Group)。

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Back in 2007, Eric Lefkofsky and Brad Keywell invested in a struggling Internet startup, Groupon.

FORBES: Lightbank: A Talk With Groupon's VC Backer

Last year, the co-founder of Groupon ( NASDAQ:GRPN), Brad Keywell, gave a keynote speech.

FORBES: Groupon's Accounting Mistake, the Media, Quant Funds and Academic Case Studies

According to the filing, cofounder Bradley Keywell owns 6.9% of class A and 16.7% of class B shares.

FORBES: The Groupon IPO: By The Numbers