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Our Firm

S4 is a business strategy group that serves clients operating in highly regulated industries, such as healthcare, education, not-for-profit, gaming, science and technology, transportation, defense contracting, energy and environmental initiatives. 

We cater mostly to companies with annual revenue in excess of $1M seeking to expand their business, enter new markets, or respond to adverse developments in their existing markets.

While many consulting agencies operate at a state or national level, very few are capable of both. S4 Group offers business development, sales and marketing, government affairs, and contracting and grants services. Our clients include regional and national businesses, nonprofits, and associations.

S4 helps clients sustainably grow their business and navigate the unpredictable world of government regulation and legislation.

Our Services Include:

Sales and Marketing
Strategy Consulting
Government Affairs
Government Contracting
Our Competitive Advantage

S4 Group’s unique experience working with companies in highly-regulated industries to succeed and grow. Our staff have decades of combined experience working closely with clients to develop their business strategies, sales and marketing plans, tap into new markets, and manage the risks and opportunities posed by government regulation.

For our clients seeking to grow their businesses, we leverage our insight into the mindsets of healthcare executives and decision makers in the technology, nonprofits, and education industries.

For our clients seeking to refine their business strategy, we provide access to world-class entrepreneurs and their keen eyes for 

S4 Group’s competitive advantage is our unique ability to offer our clients multi-state and federal solutions tailored to their specific needs. We deploy our understanding of state and federal processes to coordinate a company-wide strategy for our government affairs clients.


"I've been working with Mark Kalish and the S4 Group for nearly a year now. He's opened doors for us in Illinois; helping create a more favorable regulatory environment for our industry. Thanks to S4, we've been able to defend against unwanted legislation and have positioned our own bills for success. It's been a real pleasure working with the S4 team.

—  Eli Davis, COO FNA

Our Firm
Our Team
Our Team
Jack Feiler


Jack, a business development specialist, has enabled others to advance their businesses through successful sales and marketing strategies.

Melissa Schakowsky

Director of Operations

Graduating Magna Cum Laude with Honors, Melissa Schakowsky has a Bachelor of Arts in International Studies and Political Science with a minor in Economics from the University of Miami.

Patricia Munoz

Strategic Medicaid Advisor

Ms. Munoz started working as a caseworker for the Illinois Department of Human Services in 1986. In her 30 years at the agency, Ms. Munoz graduated to a senior manager responsible for managing public assistance offices throughout Cook County and beyond.

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Michael Greene

Director of Finance

Looking for more information? Contact us

We are here to assist. Contact us by phone or via email.

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