Committed to You

Our experienced team is here to serve you



We are an advisory focused firm

The word partnership best reflects how we approach serving our clients.  First and foremost we want to partner with our clients and focus on being part of  the solution they need  to achieve their ultimate goals.  Part of our approach often involves serving as an advisor to our clients.  Some other frameworks create conflicts of interest or are very narrow in the scope of activities others will undertake to help you succeed.  We want to bring all of our experience, creativity and relationships to bear in helping you.  As a result we have found an advisory relationship generally is an effective way of engaging to work very broadly on your behalf and to achieve your goals.


Founder- Managing Director

John L. Langston, CAIA

-Founder, Managing Director-

John L. Langston, CAIA is the Founder and Managing Director of Republic Capital Group.  Mr. Langston previously served as Managing Director of Partner Solutions at Avalon Advisors, an RIA overseeing approximately $6 billion dollars in assets and a portfolio company of The Carlyle Group. John previously served as Director of Global Platform Distribution for SkyBridge Capital. Prior to joining SkyBridge, John was a Director for Salient Partners, an RIA overseeing approximately $16 billion dollars in assets and a portfolio company of Summit Partners.  John completed his first financial services merger in 2007, helping to lead one of the largest independent real estate lending and brokerage firms in the Southeast.  John has utilized his experience and training as a Chartered Alternative Investment Analyst (CAIA) to advise the nations leading asset managers, RIA’s, and family offices on the development and application of alternative investments.  John began his career at Northwestern Mutual Financial Network in 1997. EDUCATION- Rollins College, M.B.A., Master’s Commission

Jayro Yoo

Nathan Mazzapica

- Director -

Nathan Mazzapica has worked with some of the leading RIA’s and Family Offices regarding their allocations to several categories of alternative and private investments.  Mr. Mazzapica was previously with Salient Partners a boutique alternative asset manager raising capital for private equity, hedge funds, fund of funds, mutual funds and managed accounts.  He managed internally the top producing region three of the last four years, raising over $800M in assets.  Mr. Mazzapica has deep relationships with RIA’s and multifamily offices throughout the east coast.  Previous to Salient Partners Mr. Mazzapica was with Chevron Natural Gas as a contract administrator where he administrated and negotiated new NAESB (North American Energy Standard Board Contracts) for Chevron Natural Gas and supported natural gas equity traders.

University of Houston, BA in Political Science (2007)


Blake Cargill

- Vice President -

Previous to joining Republic Capital Group Mr. Cargill was an Investment Banking Analyst with Canaccord Genuity the global capital markets division of Canaccord Genuity Group Inc. offering institutional and corporate clients idea-driven investment banking, advisory, research, sales and trading services from offices in 10 countries worldwide.  Mr. Cargill also served as a Credit Analyst in the Officer Development Program of Amegy Bank of Texas where he applied finance and accounting skills to assess business and credit risk while working with high-level bank leadership.  

Mr. Cargill graduated from Baylor University with a Bachelor of Business Administration.



Extending our reach, experience and wisdom.


Reid Hyde

- Senior Director - 

Reid Hyde has been involved in the capital markets since 1992, beginning his career as a corporate fixed-income trader with Rauscher Pierce (now Royal Bank of Canada). Since that time, he has been involved in high yield sales and trading, institutional equity sales, and ultra high net worth advisory to family offices in Texas. Mr Hyde was a member of the team to establish the Dallas office of Montgomery Securities (now Bank of America), as well as the co-founder of the Dallas office of Friedman Billings & Ramsey.

Mr. Hyde has also worked independently as a generalist in investment banking, assisting in capital raises in industries including life sciences and oil and gas. Most recently, Mr. Hyde assisted in securing $20m of debt and equity capital on behalf of a Texas based energy service company.

Mr. Hyde received his B.A. from the University of Texas, Austin, and his M.B.A. from Southern Methodist University.

Our Platform of Operating Partners and Broker Dealer Representatives provides us access to:

  • Over 150 years of investment banking experience
  • A nationwide footprint of over 50 registered representatives
  • Assistance with capital raise
  • Assistance with sourcing buy-side and sell-side opportunities