Sirena G. Johnson, CPA
sgj@tgccpa.com

Download VCard

Sirena Johnson is a principal at Thompson, Greenspon & Co., P.C. She joined the firm in 1999 and is a member of the Government Contracting, Construction and Employee Benefit Plans groups.

Sirena provides accounting, auditing and tax services to clients and possesses a working knowledge of Federal regulations and cost principles for Federal government contractors and construction contracting accounting policies.

Sirena has worked with various general contractors and subcontractors in the Metropolitan area. In addition to providing accounting, auditing and tax services, Sirena also provides management consulting services. These services include assisting client management in the implementation of cost accounting systems and overhead allocation methods; preparing overhead incurred cost submissions for the Defense Contract Audit Agency (“DCAA”) and assisting with DCAA accounting system reviews.

Sirena's experience with employee benefit plans entails financial statement audits and tax return preparation for these plans. She is knowledgeable of Internal Revenue Code and Department of Labor regulations promulgated for employee benefit plans. She has also provided consultation with calculations and other matters relating to self correction submissions with the Internal Revenue Service.

Prior to joining the firm, Sirena had accounting experience in the private industry sectors of Federal government contracting and legal practices.

Sirena is the Treasurer of the George Mason University School of Management Alumni Association and a member of the Women in Business Leadership Committee of the George Mason University School of Management. She was named a Super CPA by the Virginia Society of Certified Public Accountants in 2011 in the category of Small Business Consulting.

Expertise

• Accounting
• Auditing
• Tax Advising
• Management consulting

Industries

• Federal government contracting
• Employee benefit plan industries
• Construction

Affiliations

• American Institute of Certified Public Accountants
• Virginia Society of Certified Public Accountants
• Fairfax County Chamber of Commerce

Education

• BS, Accounting, George Mason University