Spencer Mullee

Chief Executive Officer at CYXTERA TECHNOLOGIES, INC.

Net worth: 15 M $ as of 2026-06-29

64 year

1 connections

Technology Services

Consumer Services

Commercial Services

Profile

Spencer E.
Mullee is the founder of Ninezero DC Management.
I Pty Ltd. (Australia), founded in 2001, where the titles held included CEO, CFO, COO & Director.
Mr. Mullee is also the founder of DCI Technology Holdings LLC, founded in 2003.
Current jobs include Chief Executive Officer at Cyxtera Technologies, Inc. since 2023, Chief Executive Officer at Phoenix Infrastructure LLC since 2023, and Chief Executive Officer & Director at Csquare, Inc. starting in 2026.
Former jobs include Chief Executive Officer at Ninezero DC Management I Pty Ltd. (Australia) and Chief Executive Officer at Dawn Acquisitions LLC.
Education includes undergraduate studies at the University of California, Davis.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
0.46%	2026-07-15	714,285 ( 0.46% )	15 M $	2026-06-29

Spencer Mullee active positions

Companies	Position	Start
CYXTERA TECHNOLOGIES, INC.	Chief Executive Officer	2023-03-31

All active positions of Spencer Mullee

Former positions of Spencer Mullee

Companies	Position	End
Ninezero DC Management I Pty Ltd. (Australia) Ninezero DC Management I Pty Ltd. (Australia) Data Processing ServicesTechnology Services Provides data centre services	Chief Executive Officer	2023-05-16
Ninezero DC Management I Pty Ltd. (Australia) Ninezero DC Management I Pty Ltd. (Australia) Data Processing ServicesTechnology Services Provides data centre services	Chief Executive Officer	2019-08-31
Dawn Acquisitions LLC Dawn Acquisitions LLC Data Processing ServicesTechnology Services Provides hosting and data processing services	Chief Executive Officer	-
DCI Technology Holdings LLC DCI Technology Holdings LLC Miscellaneous Commercial ServicesCommercial Services Owns and operates business centers	Founder	-

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Experiences
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Linked companies

Private companies	5
University of California, Davis University of California, Davis Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
DCI Technology Holdings LLC DCI Technology Holdings LLC Miscellaneous Commercial ServicesCommercial Services Owns and operates business centers	Commercial Services
Ninezero DC Management I Pty Ltd. (Australia) Ninezero DC Management I Pty Ltd. (Australia) Data Processing ServicesTechnology Services Provides data centre services	Technology Services
Dawn Acquisitions LLC Dawn Acquisitions LLC Data Processing ServicesTechnology Services Provides hosting and data processing services	Technology Services
Cyxtera Technologies, Inc. Cyxtera Technologies, Inc. Data Processing ServicesTechnology Services Provides data center colocation and interconnection services	Technology Services