Exhibit 99.1

Goldman Sachs BDC, Inc. Appoints Janet F. Clark to the Board of Directors

Company Release – May 14, 2015

NEW YORK—(BUSINESS WIRE) — Goldman Sachs BDC, Inc. (“GS BDC” or the “Company”) (NYSE: GSBD) announced today that its Board of Directors increased the size of the Board of Directors by one director and filled the vacancy created by such increase by appointing Janet F. Clark, age 60, as a director, effective May 13, 2015. Ms. Clark’s appointment brings the total size of the Board of Directors to five, four of whom are independent. Ms. Clark is an independent director under New York Stock Exchange standards because she is not an “interested person” of GS BDC, as defined in Section 2(a)(19) of the Investment Company Act of 1940. Ms. Clark will hold office until the date of the Company’s 2015 Annual Meeting of Stockholders and until her successor shall be elected and qualified or until her earlier death, resignation, retirement, disqualification or removal. Ms. Clark will also serve on the audit, compliance, compensation, contract review and governance and nominating committees.

Ms. Clark is retired. Ms. Clark currently serves as a Director and Chair of the Audit Committee, and member of the Compensation, and Nominating and Governance Committees at EOG Resources, Inc., an independent oil and gas company. Ms. Clark was formerly a Director for Dell, Inc., a computer technology company, Exterran Holdings, Inc., an oil and gas equipment and services company, and Universal Compression Holdings, Inc., predecessor to Exterran Holdings, Inc. Previously, Ms. Clark served as Executive Vice President and Chief Financial Officer of Marathon Oil Corporation, an independent international energy company. Before joining Marathon Oil Corporation, Ms. Clark held several senior management positions with independent oil and gas exploration and production companies including Nuevo Energy Company and Santa Fe Energy Resources, among others, where she led different functional groups within each company, including finance, accounting, internal audit and investor relations. Ms. Clark also serves as a Director on the nonprofit boards of Houston Symphony Orchestra, Teach for America, Inc. – Houston Region, Greater Houston Community Foundation and YES Prep Public Schools. Ms. Clark also serves on the Rice University - Jones Graduate School of Management Council of Overseers and is a member of the Federal Reserve Bank of Dallas’ Business and Community Advisory Council. Based on the foregoing, Ms. Clark is experienced with accounting, financial and investment matters.

ABOUT GOLDMAN SACHS BDC, INC.

Goldman Sachs BDC, Inc. is an externally managed specialty finance company that is a non-diversified, closed-end management investment company that has elected to be regulated as a business development company under the Investment Company Act of 1940 and the rules and regulations promulgated thereunder. The Company was formed by The Goldman Sachs Group, Inc. (“Goldman Sachs”) to invest primarily in middle-market companies in the United States. The Company is externally managed by Goldman Sachs Asset Management, L.P., an SEC-registered investment adviser and a wholly-owned subsidiary of Goldman Sachs. Since it was formed in 2012 through March 31, 2015, the Company has originated more than $1.27 billion in aggregate principal amount of debt and equity investments prior to any subsequent exits or repayments. The Company seeks to generate current income and, to a lesser extent, capital appreciation primarily through direct originations of secured debt, including first lien, first lien/last-out unitranche and second lien debt, and unsecured debt, including mezzanine debt, as well as through select equity investments. For more information, visit www.goldmansachsbdc.com.

FORWARD-LOOKING STATEMENTS

This press release may contain forward-looking statements that involve substantial risks and uncertainties. You can identify these statements by the use of forward-looking terminology such as “may,” “will,” “should,” “expect,” “anticipate,” “project,” “estimate,” “intend,” “continue” or “believe” or the negatives thereof or other variations thereon or comparable terminology. You should read statements that contain these words carefully because they discuss our plans, strategies, prospects and expectations concerning our business, operating results, financial condition and other similar matters. We believe that it is important to communicate our future expectations to our investors. There may be events in the future, however, that we are not able to predict accurately or control. Any forward-looking statement made by us in this press release speaks only as of the date on which we make it. Factors or events that could cause our actual results to differ may emerge from time to time, and it is not possible for us to predict all of them. We undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Goldman Sachs BDC, Inc.

Investor Contact: Katherine Schneider, 203-983-2529

Media Contact: Andrew Williams, 212-902-5400

Source: Goldman Sachs BDC, Inc.