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About us

Building Value. Creating Experiences. Strengthening Communities.

Since 2005, GSK Management has combined real estate expertise with a passion for hospitality — developing and managing properties that create long-term value, memorable experiences, and meaningful community impact.

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Brands we work with

About GSK

Our company snapshot

Founded in 2005, GSK Management has built a reputation for strategic real estate investments and exceptional hospitality experiences, combining hands-on management with a commitment to long-term value and community impact.

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30

Team members

Our dedicated team members have played a pivotal role in transforming challenges into success stories, employing their expertise and creativity to craft bespoke solutions that drive real results for our clients.

98%

Satisfaction rate

GSK boasts an impressive client satisfaction rate of 98%, reflecting our commitment to excellence and the effectiveness of our strategies in meeting client objectives.

236+

Happy clients

We've had the privilege of partnering with a diverse range of businesses, from startups to established enterprises, each with their unique challenges and aspirations.

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Who you work with

Our team

Meet our specialists behind Nova.  

George Tselos
Founder & CEO

George’s deep knowledge of real estate and hospitality, paired with his unwavering passion for GSK’s growth and integrity, drives the company’s vision and long-term success.

Stefanie Tselos
CSO

Bringing over 15 years of experience in relationship building and client growth, backed by a B.S. in Psychology, giving her a unique ability to connect with people and drive meaningful, lasting partnerships.

John Ryan
CMO

With 25 years of experience in marketing, advertising, and creative strategy, with a passion for leveraging AI and performance-driven innovation to elevate brand impact and growth.

Katrina Ryan
COO

10 years of leading Fortune 500 operations teams, combining strategic efficiency with a people-first approach to drive organizational excellence and scalable growth.

Our values

Values behind our work

Integrity

We lead every project with honesty, transparency, and accountability in everything we do.

Excellence

We set high standards for quality, ensuring every property and experience reflects our commitment to detail.

Community

We invest in developments that strengthen neighborhoods and bring people together.

Innovation

We embrace new ideas and creative solutions to drive growth and long-term value.

Service

We prioritize people — from tenants to guests — delivering exceptional care and responsiveness at every touchpoint.

Legacy

We build with purpose, creating lasting impact and value for future generations.

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Lets work together

Get in touch with GSK Management — whether you’re interested in our properties, partnerships, or hospitality experiences, we’re here to connect and help bring your vision to life.

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GSK Management
200 E. Evergreen Ave, Suite 102
Mount Prospect, IL 60056
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