New York attorney · Reg. #5417605

Matthew Warren O'Neil

Registered — renewal due (registry: Due to reregister within 30 days of birthday)

Current employer

Costello Cooney & Fearon PLLC · Syracuse, NY · since at least September 2026

Admission

Admitted 2016, Third Department · Cornell Law School

Employment history

• Costello Cooney & Fearon PLLC · Syracuse, NY · current

Compiled from NYS Office of Court Administration registration records, published NY Appellate Division decisions, and SEC orders against attorneys; current as of October 2026. Not an official record; verify with the NY Courts Attorney Search.