Brian Bereck

Co-Founding Partner


One-half of the driving force behind Abacus Group’s inception, Brian is an entrepreneurial professional whose prior experience includes working in the Controller’s Group at Goldman Sachs and as a Manager of Finance at Alliance Capital. Brian develops Abacus Group’s vision, growth, and strategy. He holds a Bachelor’s Degree in Accounting from Skidmore College, where he played basketball, and an MBA in Finance from St. John’s University.

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Len Frankel, CPA

Co-Founding Partner


Len is the other individual behind Abacus Group’s history. He is chiefly responsible for the firm’s financial management. Before launching Abacus Group with Brian, Len worked for several years as an Audit Manager at EY and held Controllership positions in the Manufacturing and Retail industries. Len is a CPA in the State of New York and holds a Bachelor’s Degree in Accounting from Franklin & Marshall College. In his spare time, golf and skiing are Len’s favorite pastimes.

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Chris Cook

Partner, Accounting & Finance Division


Chris leads Abacus Group’s Los Angeles office. Before joining the firm in 2006 and working for 10 years in the NYC Headquarters, Chris spent six years in the Financial Advisory Services practice at PricewaterhouseCoopers in New York. An avid traveler—most of his family live overseas—Chris’ interests include film, literature, live music, and yoga. Chris graduated from Penn State University with a Bachelor’s Degree in Finance.

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Jason Fleischer

Partner, Accounting & Finance Division


Jason began his career with a combination of Public Accounting and Corporate Finance before joining Abacus Group in 2007. Outside of work, Jason is usually running around Central Park training for his next endurance event. Jason is also an active fundraiser for the Leukemia and Lymphoma Society (LLS), as well as one of the marathon coaches for Team in Training. In 2015, LLS recognized Jason as Man of the Year for his outstanding fundraising achievements in support of cancer research. Jason holds a Bachelor’s Degree in Accounting from the University of Scranton.

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Marty Fredo

Partner, Information Technology Division


Marty oversees the permanent and temporary placement of IT professionals with over a decade of experience in the Information Technology industry. Combining 12 years of systems support with a passion for building long-lasting relationships between candidates and clients, recruiting was a natural progression for Marty. The successful amalgamation of these two sectors is evidenced in Marty’s IT resume of professional IT positions as well as the placement of executive level technologists. Marty enjoys spending his free time with his wife and two sons at their home in New Jersey.

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Adam Haworth, CPA

Partner, Accounting & Finance Division


Adam came to Abacus Group in 2004 with expertise in the financial landscape of the Telecommunications and Media industries. He began his career in Public Accounting at Deloitte and Touche before transitioning to Corporate Finance in both Fortune 500 companies and start-up environments. Adam’s educational credentials include a Bachelor’s Degree in Accounting from Binghamton University and a MBA in Finance from New York University. Adam is a CPA in the State of New York. Outside of work, Adam enjoys spending time with his wife and two daughters, exercising, traveling, and cooking.

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Laurie F. Kotton, CPA

Partner, Accounting & Finance Division


Laurie, a CPA, has been with Abacus Group since October 2000, after working in the financial services industry in Controller/Controls leadership positions at Merrill Lynch and MetLife. Laurie started her career in the Audit practice of PWC after graduating summa cum laude from the University of Bridgeport. She sits on various committees within the Financial Women’s Association and is a member of The Connecticut Society of Certified Public Accountants and the American Institute of Certified Public Accountants. Laurie was made Partner in 2004 and has been an integral part of the management team since. She represents some of the firm’s top clients across a variety of industries, forming long-standing relationships with their financial and human resource leaders. Laurie resides in NYC with her husband. In her spare time, she enjoys skiing, theater, dining, and traveling.

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Brian Ruina

Partner, Accounting & Finance Temporary Division


Brian has been with Abacus Group for 17 years. He began as a recruiter for permanent Accounting & Finance positions and was later selected to establish the firm’s Temporary Staffing practice, which has proved a successful venture under his leadership. Prior to entering recruitment, Brian held various Corporate Finance roles at Bluestone Capital. He holds a Bachelor’s Degree from Kutztown University, where he was the Center Midfielder for the school’s Division II Soccer team. Brian remains an avid sports fan and athlete.

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Gennaro Vitale

Partner, Accounting & Finance Division


Gennaro has been with Abacus Group’s Accounting & Finance team since 1999. His previous experience includes several years in a large regional Public Accounting firm. He holds a Bachelor’s Degree in Accounting from Seton Hall University. Outside of Gennaro’s success in recruitment, he is a self-declared cooking aficionado and derives the most fulfillment from coaching his sons’ sports teams and gardening.

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Dianne Perlman, CPA

Director, Accounting & Finance Division


Dianne graduated from Indiana University and started her career at PricewaterhouseCoopers in New York City where she earned her CPA. From there, she moved on to Morgan Stanley as a Business Unit Controller, and then to Bear Stearns in their Treasurer’s group as a Managing Director, where she spent 16 years of her career. She started at Abacus in 2005 and works with clients in a variety of industries and sizes, from startups to Fortune 50 companies. In her spare time, Dianne enjoys traveling, theater and exercising, and spending time with her two grown children.

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Robert B. Pickus, CPA

Director, Accounting & Finance Division


Robert is a CPA in the State of New York and is an active member of the New York State Society of Certified Public Accountants and the American Institute of Certified Public Accountants. He was instrumental in the development of the Nassau Chapter’s Young CPAs Committee, where he served as Chairperson for two years. His work experience prior to recruitment includes several years as an Auditor with McGladrey. Robert earned a Bachelor’s Degree in Accounting from the University of Albany.

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J.B. Tringone

Director, Administrative Support Division


J.B. Tringone oversees the permanent, temporary, and temporary-to-permanent placement of Administrative Support professionals, including Executive Assistants, Administrative Assistants, Receptionists, Legal Secretaries, Paralegals, Human Resources Assistants, and Customer Service Representatives. J.B. joined Abacus Group’s newly established Administrative Support Division in 2011 with more than a decade of relevant staffing experience under his belt. In only a few years with the firm, J.B. has excelled in his role, prompting his promotions to Manager and, most recently, Director. J.B. holds a Bachelor’s Degree in Business Management from SUNY Fredonia.

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Melissa Perez

Assistant Director, Temporary Accounting & Finance Division


Melissa joined Abacus Group in 2010. After completing law school in the Dominican Republic in 2004, she relocated to New York City. She began her career in sales and then transitioned into recruiting once she joined Abacus Group’s Temporary Staffing Division. In her spare time, Melissa loves to travel, read, and work out, and is a foodie at heart.

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