Meet Our Team

Oreste J. Mosca

Principal (formerly Managing Director)

As a Principal (formerly Managing Director), Rusty sets the standard when it comes to responsiveness and willingness to help clients solve their business challenges.  His systematic, accurate approach ensures that he exceeds expectations for timely delivery of high quality products. He is a leader in many community endeavors.


Construction (Director of Construction)
Audit & Accounting


Year joined Nathan Wechsler & Company: 


Certified Public Accountant (CPA)


Undergraduate degree:     
Bachelor of Science in Business Administration with a concentration in Accounting, University of New Hampshire’s Peter T. Paul College of Business and Economics


Community service:
2023 Bank of America Neighborhood Champions – Local Market Selection Committee Member
Associated General Contractors of New Hampshire Legislative Committee, Member
Capitol Center for the Arts, Treasurer and Board Trustee
CATCH Neighborhood Housing, Treasurer and Board Member
Franklin Savings Bank – Corporator
Leadership New Hampshire, Chair and Board Trustee (formerly Treasurer)
Amoskeag Health, Board Member
Associated Builders and Contractors, Inc. of NH/VT, former Treasurer and Board Member
Granite United Way – Merrimack County Campaign – former Cabinet Chair
Havenwood-Heritage Heights Retirement Community, former President and Board Member
NH Teen Institute, former Trustee
Granite State Youth Mentors (helped establish federal funding), former Board Member
New Hampshire Humanities, former Board Member and Treasurer


Professional affiliations:
American Institute of Certified Public Accountants
New Hampshire Society of Certified Public Accountants
Graduate of Leadership New Hampshire, class of 2012


“Big four” CPA firm, audit senior


Awards and recognitions:
Jefferson Award for Active Volunteerism
Granite State’s 200 Most Influential Business Leaders, 2019 and 2020
Granite State United Way Campaign Chair Award, 2018


Publications & presentations:
Associated General Contractors of New Hampshire tax seminar
Bank of America Nonprofit Seminar Series
Independent School Association of Northern New England
NH/VT Chapter of Associated Builders and Contractors, Inc. succession planning seminar
NH Governor’s Conference on Volunteerism
NH Society of Certified Public Accountants nonprofit accounting issues


Hobbies, interests and fun stuff:
Avid reader (in 2014 read 54 books)
Passionate New England sports fan and English and Italian “Football” fanatic known to dress up in his favorite total team kits during the Saturday match.
Still collects sports trading cards and a total baseball stats geek, a big fan of Sabermetrics.


Learn more about Rusty Mosca on LinkedIn.