John Calys

Director of Finance/CFO at VERISIGN. INC.

Net worth: 9 M $ as of 2026-05-30

67 year

76 connections

Communications

Commercial Services

Technology Services

Profile

John D.
Calys is Director at Global Registration Services Ltd. since 2011.
Mr. Calys is Chief Financial Officer & Executive Vice President at VeriSign, Inc. since 2010.
Former roles include Auditor at Ernst & Young LLP; Vice President & Assistant Controller at Nextel Communications, Inc. in 2005; Vice President & Assistant Treasurer at Sprint Communications LLC in 2007; Vice President & Controller at XO Communications, Inc. from 2007 to 2010; and Vice President & Controller at XO Holdings, Inc. in 2010.
Education includes undergraduate and graduate degrees from the University of Kansas.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
VERISIGN, INC. 0.03%	2026-05-14	31,842 ( 0.03% )	9 M $	2026-05-30

John Calys active positions

Companies	Position	Start
VERISIGN. INC.	Director of Finance/CFO	-
Global Registration Services Ltd. Global Registration Services Ltd. Miscellaneous Commercial ServicesCommercial Services Provides business support services for revenue delivery, technology operations, sale support and product management sectors	Director/Board Member	2011-06-13

All active positions of John Calys

Former positions of John Calys

Companies	Position	End
XO Holdings, Inc. XO Holdings, Inc. Specialty TelecommunicationsCommunications Provides telecommunications services	Comptroller/Controller/Auditor	2010-11-30
XO Communications, Inc. XO Communications, Inc. Specialty TelecommunicationsCommunications Provides local, long distance, digital subscriber line and Internet access services	Comptroller/Controller/Auditor	2010-11-30
SPRINT NEXTEL CORPORATION	Corporate Officer/Principal	2007-04-30
Nextel Communications, Inc. Nextel Communications, Inc. Wireless TelecommunicationsCommunications Provides wireless telecommunications services	Corporate Officer/Principal	2005-07-31
Ernst & Young LLP Ernst & Young LLP Miscellaneous Commercial ServicesCommercial Services Provides assurance, auditing, tax, legal, technology and consulting & managed services	Corporate Officer/Principal	-

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Training of John Calys

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Linked companies

Private companies	8
VeriSign, Inc. VeriSign, Inc. Internet Software/ServicesTechnology Services Provides internet infrastructure services	Technology Services
Ernst & Young LLP Ernst & Young LLP Miscellaneous Commercial ServicesCommercial Services Provides assurance, auditing, tax, legal, technology and consulting & managed services	Commercial Services
XO Communications, Inc. XO Communications, Inc. Specialty TelecommunicationsCommunications Provides local, long distance, digital subscriber line and Internet access services	Communications
Nextel Communications, Inc. Nextel Communications, Inc. Wireless TelecommunicationsCommunications Provides wireless telecommunications services	Communications
University of Kansas University of Kansas Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
Sprint Communications LLC Sprint Communications LLC Wireless TelecommunicationsCommunications Provides wireless and wireline voice & data transmission services	Communications
XO Holdings, Inc. XO Holdings, Inc. Specialty TelecommunicationsCommunications Provides telecommunications services	Communications
Global Registration Services Ltd. Global Registration Services Ltd. Miscellaneous Commercial ServicesCommercial Services Provides business support services for revenue delivery, technology operations, sale support and product management sectors	Commercial Services