“When my appearance starts looking rougher that means I am up to something,” Igor Jablokov, sporting a somewhat unkempt beard, said over coffee late last month.

“It’s a telltale sign that we’re in labs and we’re getting crazy.”

To say Jablokov has been “up to something” might be a bit of an understatement.

The serial entrepreneur, who made his name by selling his previous company to Amazon, has made a forceful return to the startup world in the past year.

In June, his company, Pryon, raised $20 million from investors like AOL founder Steve Case, “Hillbilly Elegy” author J.D. Vance, Two Sigma Ventures and the Stanford University Venture Fund. That was on top of an earlier round that brought in $4.5 million.

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