MacroGenics Announces Closing of Public Offering of Common Stock and Full Exercise of Underwriters’ Option to Purchase Additional Shares

ROCKVILLE, MD, April 02, 2018 --

MacroGenics, Inc. (Nasdaq: MGNX), a clinical-stage biopharmaceutical company focused on discovering and developing innovative monoclonal antibody-based therapeutics for the treatment of cancer, today announced the closing of its previously announced underwritten public offering of shares of its common stock, including the full exercise of the underwriters’ option to purchase an additional 675,000 shares. The exercise of the underwriters’ option to purchase additional shares brought the total number of shares of common stock sold by MacroGenics in the offering to 5,175,000 and increased the gross proceeds from the offering (before deducting underwriting discounts and commissions and estimated offering expenses) to approximately $110.0 million.

Leerink Partners, Deutsche Bank Securities and Evercore Group L.L.C. acted as joint book-running managers of the offering. Stifel, Nomura and SunTrust Robinson Humphrey acted as lead managers and H.C. Wainwright & Co. acted as co-manager.

The shares were offered by MacroGenics pursuant to an effective shelf registration statement that was previously filed with the Securities and Exchange Commission (SEC). A final prospectus supplement relating to and describing the terms of the offering was filed with the SEC and is available on the SEC’s website at www.sec.gov. Copies of the final prospectus supplement and the accompanying prospectus relating to these securities may also be obtained by contacting one of the following: Leerink Partners LLC, Attention: Syndicate Department, One Federal Street, 37th Floor, Boston, MA 02110, by telephone at 800-808-7525, ext. 6132 or by email at [email protected]; Deutsche Bank Securities Inc., 60 Wall Street, New York, New York 10005-2836, Attention: Prospectus Group, Telephone: (800) 503-4611, E-mail: [email protected]; or from Evercore Group L.L.C. at Attention: Equity Capital Markets, 55 East 52nd Street, 36th Floor, New York, NY 10055, by telephone at (888) 474-0200, or by email at [email protected].

This press release shall not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such jurisdiction.

Cautionary Note on Forward-Looking Statements

Any statements in this press release about prospective financings, future expectations, plans and prospects for the Company, including statements about the Company's strategy, future operations, clinical development of the Company's therapeutic candidates, milestone or opt-in payments from the Company's collaborators, the Company's anticipated milestones and future expectations and plans and prospects for the Company and other statements containing the words "subject to", "believe", "anticipate", "plan", "expect", "intend", "estimate", "project", "may", "will", "should", "would", "could", "can", the negatives thereof, variations thereon and similar expressions, or by discussions of strategy constitute forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Actual results may differ materially from those indicated by such forward-looking statements as a result of various important factors, including: the uncertainties inherent in the initiation and enrollment of future clinical trials, expectations of expanding ongoing clinical trials, availability and timing of data from ongoing clinical trials, expectations for regulatory approvals, market and other financing conditions, other matters that could affect the availability or commercial potential of the Company's product candidates and other risks described in the Company's filings with the Securities and Exchange Commission. In addition, the forward-looking statements included in this press release represent the Company's views only as of the date hereof. The Company anticipates that subsequent events and developments will cause the Company's views to change. However, while the Company may elect to update these forward-looking statements at some point in the future, the Company specifically disclaims any obligation to do so, except as may be required by law. These forward-looking statements should not be relied upon as representing the Company's views as of any date subsequent to the date hereof.

About MacroGenics, Inc.

MacroGenics is a clinical-stage biopharmaceutical company focused on discovering and developing innovative monoclonal antibody-based therapeutics for the treatment of cancer. The Company generates its pipeline of product candidates primarily from its proprietary suite of next-generation antibody-based technology platforms, which have applicability across broad therapeutic domains. MacroGenics, the MacroGenics logo and DART are trademarks or registered trademarks of MacroGenics, Inc.

CONTACT:
Jim Karrels, Senior Vice President, CFO
MacroGenics, Inc.
1-301-251-5172, [email protected]

Karen Sharma, Vice President
MacDougall Biomedical Communications
1-781-235-3060, [email protected]