Simpson Thacher & Bartlett LLP is a law firm headquartered in New York City which employs over 800 attorneys in ten offices worldwide. The firm is highly regarded for its litigation and corporate practices, with special attention focused on its mergers and acquisitions specialty. Simpson Thacher is consistently among the most profitable large law firms in the world on a per-partner basis according to the American Lawyer���s annual AmLaw 100 Survey. For 2011, Simpson Thacher was ranked #6 on The Vault���s Top 100 Most Prestigious Law Firm Rankings, and #1 in Private Equity. The firm is also recognized in various other surveys, including Vault.com���s 2010 review of the 20 Best Law Firms to Work For. The firm has relationships with private equity firms Blackstone Group and Kohlberg Kravis Roberts, and it has longstanding ties to JPMorgan Chase, Bank of America, and the United States Department of the Treasury.