Nancy Ambrossi
Assurance Director
Lucas Horsfall
Nancy Ambrossi is a distinguished audit and accounting director at Lucas Horsfall, where she has built an exceptional career spanning more than two decades in public accounting. Since joining the firm in 2006, Ambrossi has demonstrated an unwavering commitment to excellence, earning the trust and respect of clients, colleagues, and the broader professional community alike.
At the heart of Ambrossi’s success is her ability to deliver outstanding client service across a remarkably diverse portfolio. She serves both closely held corporations and not-for-profit entities with equal dedication, bringing a rare combination of technical depth and genuine personal investment to every engagement. Clients appreciate her guidance with the audit process.

