John Klein
4 email domains
AeroLeads people directory · profile
John Klein Email & Phone Number
Chief Financial Officer and Treasurer
at
Concurrent Technologies Corporation
1 work email found
@ctc.com
LinkedIn matched
✓ Verified Jun 2026
3 data sources
Profile completeness 86%
Current company
Role
Chief Financial Officer and Treasurer
Location
Johnstown, Pennsylvania, United States
Company size
Who is John Klein? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
John Klein is listed as Chief Financial Officer and Treasurer at Concurrent Technologies Corporation, a company with 1125 employees, based in Johnstown, Pennsylvania, United States. AeroLeads shows a work email signal at ctc.com and a matched LinkedIn profile for John Klein.
Company email context
Email format at Concurrent Technologies Corporation
This section adds company-level context without repeating John Klein's masked contact details.
{last}{first_initial}@ctc.com
89% confidence
AeroLeads found 1 current-domain work email signal for John Klein. Compare company email patterns before reaching out.
Profile bio
About John Klein
John Klein is a Chief Financial Officer and Treasurer at Concurrent Technologies Corporation. He possess expertise in government contracting, dod, proposal writing, defense, program management and 12 more skills.
Listed skills include Government Contracting, Dod, Proposal Writing, Defense, and 13 others.
Current workplace
John Klein's current company
Company context helps verify the profile and gives searchers a useful next step.
Concurrent Technologies Corporation
1 role
John Klein work experience
A career timeline built from the work history available for this profile.
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Chief Financial Officer And Treasurer
Team & coworkers
Colleagues at Concurrent Technologies Corporation
Other employees you can reach at ctc.com. View company contacts for 1125 employees →
RA
Roxani Alexandrou
Colleague at Concurrent Technologies CorporationCyprus, Cyprus
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LC
Len Cheng
Colleague at Concurrent Technologies CorporationTainan City, Tainan City, Taiwan, Taiwan, Province Of China
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BC
Bailey Carl
Colleague at Concurrent Technologies CorporationUnited States, United States
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KF
Katrina Froehlich
Colleague at Concurrent Technologies CorporationJohnstown, Pennsylvania, United States, United States
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SK
Saida Kaizra
Colleague at Concurrent Technologies CorporationAlgeria, Algeria
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MC
Mike Cherry
Colleague at Concurrent Technologies CorporationKingston, Washington, United States, United States
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MM
Mark Moore
Colleague at Concurrent Technologies CorporationSan Diego Metropolitan Area, United States
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PH
Pete Herold
Colleague at Concurrent Technologies CorporationBoiling Springs, Pennsylvania, United States, United States
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RH
Rachida Hamrouni
Colleague at Concurrent Technologies CorporationTunisia, Tunisia
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CF
Claire Favro
Colleague at Concurrent Technologies CorporationPoulsbo, Washington, United States, United States
View →
Roxani Alexandrou
Colleague at Concurrent Technologies CorporationCyprus, Cyprus
View →
LC
Len Cheng
Colleague at Concurrent Technologies CorporationTainan City, Tainan City, Taiwan, Taiwan, Province Of China
View →
BC
Bailey Carl
Colleague at Concurrent Technologies CorporationUnited States, United States
View →
KF
Katrina Froehlich
Colleague at Concurrent Technologies CorporationJohnstown, Pennsylvania, United States, United States
View →
SK
Saida Kaizra
Colleague at Concurrent Technologies CorporationAlgeria, Algeria
View →
MC
Mike Cherry
Colleague at Concurrent Technologies CorporationKingston, Washington, United States, United States
View →
MM
Mark Moore
Colleague at Concurrent Technologies CorporationSan Diego Metropolitan Area, United States
View →
PH
Pete Herold
Colleague at Concurrent Technologies CorporationBoiling Springs, Pennsylvania, United States, United States
View →
RH
Rachida Hamrouni
Colleague at Concurrent Technologies CorporationTunisia, Tunisia
View →
CF
Claire Favro
Colleague at Concurrent Technologies CorporationPoulsbo, Washington, United States, United States
View →
FAQ
Frequently asked questions about John Klein
Quick answers generated from the profile data available on this page.
What company does John Klein work for?
John Klein works for Concurrent Technologies Corporation.
What is John Klein's role at Concurrent Technologies Corporation?
John Klein is listed as Chief Financial Officer and Treasurer at Concurrent Technologies Corporation.
What is John Klein's email address?
AeroLeads has found 1 work email signal at @ctc.com for John Klein at Concurrent Technologies Corporation.
Where is John Klein based?
John Klein is based in Johnstown, Pennsylvania, United States while working with Concurrent Technologies Corporation.
What companies has John Klein worked for?
John Klein has worked for Concurrent Technologies Corporation.
Who are John Klein's colleagues at Concurrent Technologies Corporation?
John Klein's colleagues at Concurrent Technologies Corporation include Roxani Alexandrou, Len Cheng, Bailey Carl, Katrina Froehlich, and Saida Kaizra.
How can I contact John Klein?
You can use AeroLeads to view verified contact signals for John Klein at Concurrent Technologies Corporation, including work email, phone, and LinkedIn data when available.
What skills is John Klein known for?
John Klein is listed with skills including Government Contracting, Dod, Proposal Writing, Defense, Program Management, Security Clearance, Information Assurance, and Systems Engineering.
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