Logo GBJ
Leslie C. Gosule
Founding Partner

Education and Experience

- B.S. in Accounting, Bentley College

- M.S. in Taxation, Northeastern University

- Passed  Series 6, 7, & 63 exams, FInancial Industry Regulatory Authority (FINRA)

- Licensed for life insurance in multiple states

- Certified Public Accountant, Massachusetts

- Certified Valuation Analyst (CVA), NACVA

- Personal Financial Specialist (PFS), AICPA



Les lives his life with a sense of purpose and pride. He enjoys helping people. In his spare time he likes sailing and riding his bike.



Les oversees business consulting, accounting and auditing services, tax planning, business valuation, and forensic accounting services. Les is also the managing director of Mainsail Advisors, a wealth planning company providing investment management for individuals and retirement plans.


-Real Estate

-Non-profit organization

-Restaurant service

-Professional Services

-Family Business

-Start-up Entities

-Private Foundations

-Fiduciary Support

-High Net Worth Individuals

-Homeowner Associations

Service Areas

-Audits, Reviews and Compilations

-Financial Statements

-Accounting Services

-Financial Forecasts and Projections

-Cash Flow and Budgeting Analysis

-Consulting Services

-Business Succession Planning

-Buying and Selling a Business

-Business Entity Selection

-Business Valuations

-Tax Services

-IRS Representation

-Estate and Trust Tax Preparation

-Mergers and Acquisitions

-Litigation Support

-Expert Witness Services

-Non-Qualified Deferred Compensation



Professional Associations

-National Association of Certified Valuators and Analysts (NACVA)

-American Institute of Certified Public Accountants (AICPA)

-Massachusetts Society of Certified Public Accountants (MSCPA)

-Financial Industry Regulatory Authority (FINRA)

-Foundation for Art and Healing

-Garden of Peace, Treasurer

-The Melissa Gosule Foundation

-Massachusetts Criminal History Systems Board (CHSB)


Securities offered through 1st Global Capital Corp., member FINRA/SIPC;  Investment advisory services including fee-based asset management accounts held through NFS, LLC. are offered through 1st Global Advisors, Inc. All other financial planning services are offered through Mainsail Advisors Services, LLC. Mainsail Advisors Services, LLC - a Registered Investment Adviser; Mainsail Advisors Services, LLC is not affiliated with 1st Global Capital Corp. Insurance services offered through 1st Global Insurance Services, Inc.  We currently have individuals licensed to offer securities in the states of AZ, CA, CT, DC, DE, FL, MA, NH, NV, NY, PA, and RI. This is not an offer to sell securities in any other state or jurisdiction.


Check me out on BrokerCheck