Real-estate co-working startup Knotel Inc. filed for chapter 11 bankruptcy, agreeing for the company to be taken over by real-estate services firm Newmark Group Inc. Newmark is providing Knotel with $20 million in debtor-in-possession financing. New York-based Knotel, founded in 2016, raised hundreds of millions of dollars from investors and in August 2019, Knotel said it had reached a valuation of more than $1 billion.