About Us

St. Martin Holdings Co. is a privately held holding company that makes controlling interest investments in small to middle market privately held companies, typically family-owned businesses, across a number of industries: manufacturing, distribution, business services, and technology. Geographic preference includes the Midwest within the radius of Chicago, Minneapolis, Kansas City, and St. Louis and southern Louisiana in the radius of New Orleans, Alexandria, and Lake Charles. 

We seek businesses in which the owner is seeking to exit/retire but lacks a logical succession plan and needs a controlling interest partner to step in and continue the legacy of the business.

St. Martin Landing Page sticky notes


It started with a simple act: twenty-two men and seven women contributed capital of $74,000 in 1905 to form St. Martin Land Company to buy land in Louisiana. Today, the Company continues to own and operate most of its initial land purchased and through the decades, the original investment has allowed the Company to diversify into other investments and what is now known as St. Martin Holdings Co., a diversified privately held holding company.

Working With Us

To ensure that we have the maximum ability to help and provide optimum succession benefits to a company, St. Martin Holdings Co. has determined a few qualifiers to partnering with us. If your company does not necessarily meet all of these needs, we would still love to discuss your options moving forward. 

  • Controlling interest (51%-100%).
  • Prefer businesses with $1 – 5 million of EBITDA (earnings before interest taxes and depreciation). 
  • Midwest within the radius of Chicago, Minneapolis, Kansas City, and St. Louis.
  • Southern Louisiana in the radius of New Orleans, Alexandria, and Lake Charles. 
  • Manufacturing, distribution, business services, and technology.
  • Prefer management team to remain in whole or in part.
  • Profitable.

Are you interested in learning more about succession planning with us?
Let’s start the conversation.


Susan Corrigan

Susan J. Corrigan

Ms. Corrigan is President and Treasurer of the Company. Before joining the Company in April 2012, Ms. Corrigan was a controller for Transamerica. Her prior work experience includes Amoco Oil Company, McGladrey & Pullen, and Alliant Energy. She possesses skills in business valuations, merger and acquisition analysis, business and performance planning and leading organizations through significant change. Ms. Corrigan graduated with highest distinction from the University of Iowa with a B.B.A. in accounting. Her M.B.A., also from the University of Iowa, emphasized finance and management and organizations. She is an inactive status certified public accountant (CPA). 

Board of Directors

James Trewin

James H. Trewin

Mr. Trewin is a director and Chairman of the Board of the Company. Mr. Trewin is a retired licensed professional mechanical engineer. Mr. Trewin was a principal in Practical Building Solutions 2000, Inc., a mechanical, electrical and plumbing engineering design firm and served as the electrical contractor for the rebuilding of downtown Wylie, Texas. He was a founder and manager of Trewin & Smith, Inc., an air pollution control systems design and manufacturing firm and was a Major Subcontract Manager with Texas Instruments Incorporated. Mr. Trewin has been a director of the Company since 1986 and served as President of the company from 1995 to September, 2012. Mr. Trewin holds a B.S. in Mechanical Engineering from Iowa State University.


Cammie C. Greif

Ms. Greif joined as a director of the Company in 2015. Ms. Greif co-founded TaxACT, Inc., an online tax software company based in Cedar Rapids, Iowa, in 1998 and acted as Chief Marketing Officer until 2012 when the company was sold to Blucora. Ms. Greif currently manages the finances of the family’s 3,000 acre farming operation, investment securities, commercial real estate and other alternative investments. She also dedicates her time to enriching the entrepreneurial community through mentoring startups at the Iowa Startup Accelerator and other entrepreneur-related events. Ms. Greif serves on the Mount Mercy University Board of Trustees and the Board of Directors of Timberline Manufacturing in Marion, Iowa. She received a B.B.A. in accounting and business administration from Mount Mercy College in 1988, and is an inactive status certified public accountant (CPA). 

Charles F. Kreiner, Jr.

Charles F. Kreiner, Jr

Mr. Kreiner joined the company as a director of the Company in 1989. Mr. Kreiner is a senior vice-president-investments and member of The Kreiner Financial Group associated with UBS Financial Services, Inc. in Buffalo, NY. Mr. Kreiner has been involved in brokerage and management of investment securities and portfolio management of stocks, bonds and mutual funds since June 1972. Mr. Kreiner served in the United States Navy with combat experience aboard a destroyer in Southeast Asia. Following active duty, Mr. Kreiner served in the United States Naval Reserve retiring with the rank of Captain. Mr. Kreiner graduated with a B.A. in Economics from Hamilton College in 1967 and with an M.B.A. in Finance from the University of Southern California, Graduate School of Business Administration in 1972. 

Roy Poché

Roy Poché

Mr. Poché became a director of the Company in 2007. Mr. Poché is majority owner of Superior Derrick Services, LLC. The company fabricates derricks, substructures, and drilling rigs (new and refurbished) and is one of the leading fabricating companies along the Gulf Coast. Mr. Poché is also 50% owner of Champion Resources, LLC. The company has a one million square foot office/warehouse facility that sits on sixty acres. They buy, sell and rent drilling equipment. Mr. Poché has been self-employed since 1980. He graduated from St. Martinville High School in 1961 and attended the University of Southwestern Louisiana in Lafayette, Louisiana.

Thomas Slattery

Thomas C. Slattery

Mr. Slattery joined as a director of the Company in 2003. Mr. Slattery is the principal shareholder and Chairman of the Board of Heritage Associates Corporation, a commercial real estate services firm. In addition, Mr. Slattery owns Hawkeye Escrow Company, a third party escrow firm, and Centurion Properties Partnership LLP, a real estate investment entity. Mr. Slattery has been involved in the commercial real estate industry since 1979. He is on the Board of Directors of NXTBank (formerly City State Bank). Mr. Slattery is a graduate of the Eastman School of the University of Rochester (New York) and holds M.A. and Ph.D. degrees from the University of Iowa.

Arlo Sorenson

Arlo G. Sorensen

Mr. Sorensen has been a director of the Company since 1998. Mr. Sorensen retired from the M.H. Whittier Corporation, where he last served as President and a Director. Since his retirement, Mr. Sorensen continues to serve as Chairman of the Board of Directors of the Whittier Trust Company and as a Board Member of various Whittier corporations and charitable foundations. Mr. Sorensen is a 1964 graduate of Brigham Young University with a B.A. in Accounting.