He enjoys spending his free time on the Lake and cheering on his Alumni, the Clemson Tigers. He and his wife are active members of St. Paul's Episcopal Church in Summerville.

giving back

community outreach

Supporting local schools and Nonprofits is dear to Cornerstone's heart. To see the organizations we are involved with or to request sponsorship, click below.

If you would like your business to join in the Cornerstone partnership for charitable giving, please contact us today!  

April Williamson   Executive Marketing Assistant

Although born and raised in Crawfordville, Florida, April made Summerville, South Carolina her home in 2005 and has never wanted to leave. 

Matthew Gouin        Unit Sales Manager 

Originally from Massachussets Matthew and his family are enjoying southern living in sunny Summerville, South Carolina.

Married to his wife Jaime, the  

couple are parents to their beautiful daughters Marissa and Taylor. Matthew enjoys playing Golf, and spending time with his family at the beach.

Scott Grow                

Assistant Branch Manager 

Scott and his wife Amy live in Charleston, South Carolina and have two children, Sebastian and Makinzie. Originally from Ohio, Scott has 15 years in the Insurance Industry.   

dogs Honey and Houdini. The couple enjoys an active lifestyle, and spends much of their free time boating.  They belong to Christ Our King Catholic Church in Mount Pleasant

James Culbertson  Managing Partner/Branch Manager 

As Branch Manager of the Clinton, South Carolina location, James or, Calvin, as he prefers to be called manages a team of representatives who service 

David Armbruster President of Financial Division/Managing Partner

A 1996 Clemson University Graduate, Dave is a licensed Investment Advisor who resides in Mt. Pleasant, South Carolina with his wife Patti and their 

Michael L. Haskett, Jr. CEO/Managing Partner

Retirement planning you and your family can trust


Cornerstone was founded in 2007 when a small group of determined individuals came together with one big idea: To provide a "One Stop Shop" solution for Mature Americans seeking retirement resources. 

Now, years down the road, the company has expanded into multiple branches across the Southeast and has no intention of turning back. 

Our dozens of agents are focused on finding the very best products available for our clients. In order to do this, we have partnered up with more than 100 different top-rated insurance and investment companies. These relationships make it possible to create retirement portfolios that feature fantastic coverage at affordable rates. 


Our focus

Life Insurance

Life Insurance Can help offset costs related to your final expenses. If you've ever had to make arranagements for a decesased loved one, you know how stressful a time it can be. A whirlwind of activities is set in motion including funeral arrangements and probate and administrative issues, all of which can be very costly. 

The question you may want to ask yourself is: Who will be expected to pay these costs when I pass away? The fact is, expenses expenses don't have to create an unexpected burden for your family or loved ones. 

By purchasing Life Insurance you gain peace of mind knowing you have taken care of these expenses. 

What does the government pay towards final expenses? 

Read more about Life Insurance HERE


With an Annuity, you can receive a steady income for life.

 At this stage in your life, you probably want to avoid uncertainty. That's why annuities have become so popular for retirement-minded people. They represent a safe and secure way to guarantee income for as long as you live. Many people are buying annuities because they like the peace of mind of a retirement safety net. Read more about Annuities HERE. 


Long Term Care

The fact is, nearly six of every ten 65-year-olds will need long term care at some point in their lives at a cost of up to $92,000 a year. How can you cover these high costs? With a long term care insurance policy.

Medicare Supplements

Medicare was never designed to cover every facet of a retiree's health care. The reality is that there are many expenses that Medicare doesn't cover - gaps that you have to pay for
Many seniors have made Medicare Supplement insurance a key part of their financial plan. Sold by private insurance companies, Medicare Supplement insurance helps fill the gaps in Medicare plan coverage.
Fortunately, there's a way to offset these out-of-pocket costs, but with the ever-changing options available, finding the right plan can be extremely confusing. The wrong choice can end up costing you more money than you need to spend, or can put you in a dilemma when you make a claim and find out that your plan doesn't cover what you expected it to. 


A full financial review, conducted annually, can ensure that you don't run in to any of these problems. At Cornerstone, these reviews are completely free, a service we provide all our clients at no charge or obligation. Contact us to schedule one today! 


About Us

She is married to her husband Aaron and they have three daughters, Adeline, Stella and Hazel. 
The family engages in a weekly volunteer bible ministry and enjoys spending time together cooking, traveling and enjoying the great outdoors.

To find a local representative, click below

John Bankowski

Operations Manager

John is originally from Connecticut but has lived in South Carolina since 1998. He graduated from Coastal Carolina University in 2008 and enjoys watching sports and playing with his dog Riley.

the upstate South Carolina area. He lives in Laurens, South Carolina with his wife Vicki and is the father of three children, Roy, Carla and Gritton, and recently a proud grandfather to a little boy Greyson.

After managing a number of top-producing Insurance Agencies he founded Cornerstone with the dream of bringing the best retirement products to clients, while providing a competitive job market for his Agents. 

A South Carolina native with over 15 years in the business, Mike resides in Summerville, SC with his wife Jen and children Max and Mary Tom.