Transfer Agenda Information

Please contact PTC's Transfer Agent, American Stock Transfer Company(AST), for all shareholder-related questions, including:

  • Stock certificates
  • Change of address
  • Consolidation of accounts
  • Transfer of ownership
  • Other account matters

AST Shareholder Services:
Via Email:
Via Phone: AST's Call Center is open Monday through Friday, 8AM to 8PM ET.
(800) 937-5449 or (718) 921-8124
Teletypewriter for the hearing impaired:
(866) 703-9077
(718) 921-8386