Anacostia Rail Holdings (ARH) has appointed Aimee Nolan as its new chief legal officer, effective immediately, as current General Counsel and Corporate Secretary Mark Sidman prepares to retire on March 31, 2026, after more than 10 years with the company.
In her new role, Nolan will oversee legal, compliance, governance, and risk functions while supporting ARH's continued growth. She joins the executive leadership team after most recently serving as general counsel at Zoro Tools, Inc., a W.W. Grainger subsidiary.
Nolan's prior experience includes more than 25 years at W.W. Grainger, where she ultimately served as vice president and associate general counsel, advising on areas including technology, data security, mergers and acquisitions, and risk management.
"Mark's steady leadership and counsel have helped shape who we are today, and we are deeply grateful for his many contributions," said Peter Gilbertson, CEO of ARH. "As we look ahead, Aimee brings the strategic mindset, operational discipline, and experience needed to help ARH scale responsibly."
Nolan holds a JD from the University of Detroit Mercy School of Law and has completed executive leadership training at Northwestern University's Kellogg School of Management.
