About Jennings Kallen Advisors

We understand the perseverance it takes to not only start but also scale a successful business.

Every day presents new challenges and decisions to be made. You struggle to keep up with the demands of bringing your vision to life and wonder what you are missing as you do the best you can to grow quickly.

We get it. We have been in your role and understand how the pressure to be successful can distract you from your mission and the necessary next steps.

You Do Not Have to Do It Alone.

With more than 20 years of experience in business, sales, entrepreneurship, science/engineering, and law, our team offers diverse skill sets to tackle your legal, business development, business advisory, and capitalization challenges and create custom plans to help you drive disruption in your industry.

Meet Jon Kallen, M.S., Esq.

Managing Partner

Jon Kallen is an entrepreneur, attorney, and engineer with extensive experience in the renewable energy, regulated energy, agricultural technology, water/wastewater infrastructure, and environmental services sectors. He has more than 20 years of experience working for large diversified energy companies, engineering consulting firms, and early-stage private equity renewable energy/infrastructure project developers.

Jon possesses degrees in engineering and law, is a graduate of the Greater Des Moines Leadership Institute, and is a member of the Business Record’s 40 under 40 Emerging Business Leaders of Central Iowa. In 2022, Jon was named Entrepreneur of the Year by The Greater Des Moines Partnership.

Jon was appointed in 2020 to serve as the Entrepreneur in Residence at the Iowa State University Business Accelerator at the ISU Startup Factory.

Jon is also a sponsored mountain climber and adventurer and has climbed mountains all around the world, with goals to climb the highest peaks on all seven continents and kayak down the Amazon. Jon has a non-profit climbing team, Dare To Explore, which raises money through their exploits for veterans groups in Iowa.

Jon is a former college lacrosse player and continues to work to grow the sport in the Midwest by coaching high school and youth teams in Waukee, Iowa. He and his family live on an acreage northwest of Des Moines adjacent to the Saylorville natural area where he is frequently out hiking, kayaking, and walking his dog.

Meet Frank Maher


Frank has 20 years of C-Suite level leadership experience in B2B and B2C business models, spanning corporate, entrepreneurial, and marketing organizations. His experiences span business building and strategy development for world-class brands and companies, in both domestic and international settings. Most recently he co-founded and operationalized two start-ups.

The Jennings Kallen Advisors Team

Tom Swartwood

Lead Advisor

Tom is a seasoned business professional with over 30 years’ experience in investment banking, corporate law, and industry. Tom is a graduate of Dartmouth College, Georgetown Law School, and Drake University (MBA). For the past several years Tom has worked as an Assistant Professor and Assistant Director of the Pappajohn Entrepreneurship Center at Drake University and most recently as an Entrepreneurship Fellow and an assistant professor of entrepreneurship and family business at Iowa State University.

He has served as a mentor at the Global Insurance Accelerator, an innovative insurance industry accelerator in Des Moines, for TechStars Iowa, and for the Mandela Washington Fellows program which supports young leaders from sub-Saharan Africa.

David Philips, Esq.

Lead Advisor

David received his juris doctor from Tulane Law School and his BA in French from Tufts University. His career has included private law practice, founder and CEO of a recycled building materials startup and sales VP of a global nutritional ingredient manufacturer. He has 30 years of law practice and business management and advisory service and has worked at notable companies such as Kemin Industries, 4Ocean Public Benefit Corporation, The ReWall Company and City of Des Moines.

For most clients David participates in business and legal strategy, creates policies and procedures that anticipate potential legal issues, manages outside counsel, and is a fan of special projects ranging from implementing business operating systems to hiring business leaders.

Beth Wojton

Management and Human Resources Consultant

Beth Wojton is an expert in executive level strategic planning and implementation, business operations and human resources. Beth can develop and execute comprehensive human resources plans that include hiring and interviewing, administering pay, benefits and leave, enforcing company policies and creation of HR materials.

Matt Fleischer, MBA

Business Advisor

Matt has more than 25 years of experience as a CEO, Executive Director, Consultant, and member of multiple board of directors for both for-profit and NGOs. He has raised tens of millions in private equity and grant funding for his businesses and clients. He excels in business plan modeling, market analysis, operational strategy, and hypergrowth infrastructure planning. He has worked across the consumer products, environmental infrastructure, and technology innovation sectors.

Joseph D. Sweeney, MBA

Business Advisor

Joe has 15 years of award-winning leadership experience as a CEO, CFO, and entrepreneur. Having led several businesses through various life stages, he brings a diverse set of experiences to start-ups and established companies. He received an MBA from the University of North Carolina at Chapel Hill and a BS in Agricultural Business from Iowa State University.

For most clients, he participates in business and finance strategy, operations analysis, process improvement, forecasting/modeling, and organizational architecture. Joe loves to roll up his sleeves and get stuff done with his clients to help create a better future.

Carrie Cox

Administrative & Marketing Coordinator

Carrie Cox is the Administrative and Marketing Coordinator for the Jennings Kallen Advisors.  She has more than 25 years of experience in office administration, advertising and marketing and social media management.  Carrie is a graduate of California State Fullerton and University of California, Los Angeles and holds a degree in Business Administration and a Bachelor of Arts degree minoring in Design Communication Arts. 

Ready to Scale Faster?

Let us get a call scheduled to walk through your goals, challenges, and desired support.

Headquartered in
Des Moines, Iowa

666 Walnut Street, 23rd floor
Des Moines,Iowa 50309

Reach us by phone at