Rail Experience: As assistant general counsel in CSX's law department, Armbrust works at the intersection of law, policy and railroad operations by ensuring strategic initiatives and day-to-day execution are aligned with the complex regulatory framework that governs North American railroads. He consistently frames issues in practical terms and keeps discussions focused on solutions that enable timely, well-informed decisions. The successful acquisitions of Pan Am Systems and Quality Carriers are examples of how his cross-functional perspective helped advance CSX's strategic objectives.

Mentorship Role: Armbrust served as a mentor in CSX's inaugural Employee Mentorship Program, a structured initiative that fosters continuous learning by pairing mentors and mentees across the organization on an eight-month cadence with monthly meetings. As a legal leader in the rail regulatory environment, he continues to help his mentees strengthen judgment, learn how to assess risk, communicate clearly with stakeholders, and move from "issues spotted" to "solutions proposed." That guidance is especially valuable in rail, where careers are built on sound decision-making, calm execution and the ability to collaborate across disciplines and time-sensitive operating realities.

Armbrust helps his mentees better understand how regulatory requirements translate into practical actions and decisions. Moreover, he helps mentees identify career paths across rail functions, connect their current work to long-term growth and pursue opportunities that expand both technical breadth and leadership readiness.