Nathan Fisher, a Managing Director with StoneTurn, brings over a decade of experience investigating national security threats to the U.S. government. As a Special Agent with the Federal Bureau of Investigation (FBI), Nathan conducted a vast array of complex intelligence, counterintelligence, and cyber-focused investigations and operations. Nathan advises clients across the national security, Committee on Foreign Investment in the U.S. (CFIUS) and cyber spectrums.

During his nearly 12 years with the FBI, Nathan worked on sensitive intelligence collection efforts, collaborating with several other United States Intelligence Community (USIC) partners. A Russian speaker, Nathan leveraged his language skills and subject matter expertise to support national security matters and inform policy. He also investigated threats posed by nation-state actors and worked with private sector and academic institutions to inform threat awareness and resolve vulnerabilities.

As a Supervisory Special Agent, Nathan briefed FBI executive management, program-managed sensitive investigative methods, and served on formal USIC task forces to establish best practices and standards in training and delivery. Nathan developed and executed the FBI’s training curriculum for classified methodologies used in intelligence operations. He ended his FBI career as the Acting Unit Chief for the Human Intelligence (HUMINT) Operations Training Unit in the FBI’s Directorate of Intelligence. Nathan’s FBI career spanned assignments in San Francisco, Dallas and Washington, D.C.