Kohlberg Kravis Roberts & Co. co-founder Henry Kravis sold Edgar Degas’s “Danseuse au repos” for $37m at a Sotheby’s auction last night, a new record. He bought the piece in 1999 for a $28m, also a record at the time. Sotheby's promised Kravis a guaranteed amount regardless of the outcome of the sale. He was on the Sotheby’s board 1997 to 2003.