TURNER & COSTA - Key Persons


Aghavni Gevorgyan

Aghavni Gevorgyan attended Financial and Economic College of Yerevan Department Accounting and Analysis of Economic Activities management and University Agricultural Academy of Armenia - Department: Finances and graduated with a bachelor's degree in Accounting and Finance. Aghavni joined the Turner and Costa team in June 2022. She has been working as a bookkeeper and accountant for many years and enjoys working in a team environment while assisting clients with their businesses. Her past work experience also includes preparation of personal returns, enabling her to assist small business client's full circle. Aghavni currently lives in Billerica, MA with her husband and two boys.

Bob Turner - President

Job Titles:
  • President
  • Senior Partner
  • Member of the American Institute of Certified Public Accountants
Bob Turner is the President and Senior Partner of Turner & Costa, P.C.. He attended school at Northeastern University and received his Bachelor of Science degree in Accounting. With over 40 years of experience, Bob has provided individual financial, tax, estate investment and small business consultation to a diverse client base. Bob is a member of the American Institute of Certified Public Accountants and the Massachusetts Society of Certified Public Accountants. Bob is a past President of the Marlborough Rotary Club, and has served for the past ten years as Assistant Treasurer of the Club. He has served on various community-related boards and fundraising committees, volunteered in the Marlborough School System where his sons attended school, as well as coaching Marlborough Youth Soccer for several years. Bob resides in Marlborough with his wife and two sons.

Brenda J Greenwood

Brenda joined the team in 2012 and is the first point of contact for the Westford office. She has over 25 years' experience as an administrative professional supporting and managing business operations. Her attention to detail and communication with our clients enables us to effectively work in a fast-paced environment and with highly confidential data. Brenda emphasizes the importance of developing client relationships and assisting them, and is vital to our success. She resides with her husband and husky pup, and loves to cook, read, and spend time with her family.

Greg Costa - CEO

Job Titles:
  • Managing Partner
Greg Costa is Managing Partner of Turner & Costa, P.C., and has been with the firm since receiving his B.S. in Accounting from St Anslem's College in 2002. Greg has a vast range of experience in all aspects of individual and corporate accounting matters, and works closely with a diverse client base. His passion for helping small business clients improve operations and mitigate tax liability has been vital to the growth and development of the firm. He resides in Northborough, MA with his wife and two daughters.

Jesse Hancock

Jesse has been with Turner & Costa, P.C. since 2016. After earning a BSBA with an Accounting concentration from the University of Massachusetts Lowell, she began preparing personal and corporate tax returns and providing bookkeeping services for the firm. She enjoys working closely with small business clients to solve problems and hopes to continue to expand her knowledge of taxation. Currently, she is pursuing an MSA from UMass Lowell with plans to sit for the CPA exam upon completion.

Kirsten Tully

Kirsten began working at Turner & Costa in late 2021. Kirsten graduated from Merrimack College with a BS in Business Administration with a concentration in accounting. With a background in personal and estate tax returns, she joined the corporate division. Kirsten enjoys continuing to expand her knowledge while assisting the firm in preparing corporate tax returns, individual returns, trust returns, and providing payroll services. In the future she is looking forward to studying and sitting for the CPA exam to obtain her CPA licensure. In her free time, she likes spending time with her friends and family..