In a rare loss for Cravath, Swaine & Moore, a litigation partner is leaving the firm to join a prominent litigation boutique, Levine Lee, founded six years ago by former Cravath attorneys.

Teena-Ann Sankoorikal, 42, will join 12-lawyer Levine Lee on Tuesday, after practicing the last 17 years at Cravath, the last 10 as a partner.