New York attorney · Reg. #4139572
Thomas Trettnak
Registered (registry: Currently registered)
Current employer
Cerha Hempel · Vienna 01010 · since at least September 2026
Admission
Admitted 2003, Third Department · Northwestern University School of Law Chicago
Employment history
- Cerha Hempel · Vienna 01010 · 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.