This Checklist provides an overview of the steps to take when negotiating the scope of a Second Request issued by the Federal Trade Commission (FTC) or Antitrust Division of the Department of Justice (DOJ) in response to a Hart-Scott-Rodino (HSR) Act premerger notification filing. The Checklist discusses negotiating timing and deadlines for responding to the Second Request, the custodians with documents that must be searched, and substantive modifications to the Second Request's specifications.