Adam Kaiser and John Aerni, two Winston & Strawn litigation partners in New York, moved to Alston & Bird on Thursday, and most of their business from two large insurer clients, CNO Financial Group and AIG, is coming with them, they said.

Kaiser, 49, and Aerni, 60, were among a group of 70 lawyers who moved from Dewey & LeBoeuf to Winston & Strawn in 2012 as Dewey was collapsing. Overall, the Dewey group at Winston & Strawn has seen little attrition.