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Key Executives

NMLS 290461


John F. Sexton, Managing Partner

Prior to co-founding Sierra Lending Group, LLC, Mr. Sexton was the Founder and Chief Executive Officer of Oasis Bank, SSB.  He is responsible for directing all activities of this Houston, Texas based financial institution.  Oasis was an independent, startup state savings bank created to provide a full line of banking and financial products and services to high net worth, predominately Latino, customers throughout Texas.  The bank was sold to Spirit of Texas Bank.

Prior to Oasis, Mr. Sexton was Founder, President and Chief Executive Officer of Empire Mortgage Corporation (est. 1999) and Oasis Insurance Services, Inc (est. 2002) - financial services companies serving the Latino community (these enterprises were sold to Oasis Bank).

Mr. Sexton has over 25 years of experience in mortgage lending, including investment sales, loan sales, debt placement, equity, structured finance and loan servicing.  He received his Bachelor of Arts degree in Economics from the University of Texas at Austin.


NMLS 316281


Charles T. Ferdin, Managing Partner

Prior to co-founding Sierra, Mr. Ferdin was Chief Operating Officer / Executive Vice President of Oasis Bank, SSB where he was responsible for directing all operational activities of this Houston, Texas based financial institution.

Mr. Ferdin was instrumental in developing and implementing Oasis’ business strategy and was heavily involved in the day to day underwriting and approval process of Oasis’ mortgage loans.

Before joining Oasis, Mr. Ferdin was the Regional Operations Manager responsible for operations for The Laredo National Bank.  Prior to this, he was a senior executive for several community banks where he also served as Secretary to the Board of Directors, Advisory Director, and various internal committees including Loan Review and Compliance.









NMLS 416334


Fernando Vidal, Partner

Mr. Vidal has Focus on the growth of the bank with great skills in International Public Relations Fluent in Spanish and English, continosly travels to Mexico, central and South America bringing new accounts and investments to the bank. Servicing current customers and bringing more.

Specializes in the foreign market in all areas of investments and lending.

Before joining Oasis Bank, he was a Senior Loan Broker at Secure Mortgage Company focused on international clients constantly traveling to Mexico.

Being the Woodlands office Branch Manager he supervises loan officers and processors. Works with Custom Builders in qualifying borrowers for constructions and one-time close loans. Actively Markets to Builders and Real Estate agents for future business.


NMLS 512478


Brad Slepicka, Director Wholesale Operations

Brad Slepicka, Director of Wholesale Operations, has over 35 years of experience in the mortgage banking industry.

He has been involved in all aspects of management of mortgage lending operations including the origination of portfolio and secondary market quality loans for both wholesale and retail, underwriting, buying and selling loans in the secondary market, and warehouse lending.

He has most recently been associated with Preferred Bank as Vice President of Mortgage Loans for both Mortgage Origination and Mortgage Purchase Facility.

He has previously been associated with First Capital Bank (formally Liberty Savings Association), Bank United, Harbor Financial Mortgage, and Home Savings Association.



Catherine A. Morehouse, Regional Manager

NMLS 1106042


Arturo Gutierrez, Regional Manager



Laurie A. Haring, Loan Operations Manager




Laura Spencer, Post Closing Operations Manager