---

•	Phase 3 Metastatic Breast Cancer Study. The pivotal SOPHIA study is evaluating the efficacy of margetuximab plus chemotherapy compared to trastuzumab plus chemotherapy in approximately 530 relapsed/refractory HER2-positive metastatic breast cancer patients. MacroGenics remains on track for completing enrollment of this study by late 2018.

•	Phase 2 Gastric Cancer Study. The Company continues to enroll advanced HER2-positive gastric and gastroesophageal junction cancer patients in its combination study of margetuximab with an anti-PD-1 antibody. MacroGenics expects to complete enrollment of this study in 2017.

•	Enoblituzumab: The Company continues to recruit patients in multiple ongoing studies of enoblituzumab, an Fc-optimized monoclonal antibody that targets B7-H3. These studies include a monotherapy study that includes patients with bladder or prostate cancer and a combination study with an anti-PD-1 antibody.

•	MGD009: This DART molecule targeting B7-H3 and CD3 is being evaluated in a Phase 1 study across multiple solid tumor types. The Company expects to establish the dose and schedule for MGD009 administration as well as initiate expansion cohorts in multiple tumor types in 2017.

•	MGC018: The Company is conducting activities to support the submission of an Investigational New Drug (IND) application for this anti-B7-H3 antibody drug conjugate in 2018.

---

•

MGA012. The Company’s proprietary anti-PD-1 monoclonal antibody is enrolling patients in the dose escalation segment of its Phase 1 clinical study and expects to define a target dose and schedule soon. To date, the antibody has been well tolerated up to 10 mg/kg. With anti-PD-1 therapy becoming a mainstay of cancer treatment across multiple tumor types, MacroGenics believes MGA012 will be the basis for potential combination therapy with several of the molecules in its pipeline. The Company plans to initiate the first such study of MGA012 in combination with another internal program by year end 2017, subject to regulatory feedback.

•	MGD013. MacroGenics is developing MGD013, a DART molecule, to provide co-blockade of two immune checkpoint molecules expressed on T cells, PD-1 and LAG-3, for the potential treatment of a range of malignancies. The Company’s IND submitted for MGD013 was cleared by FDA in May and commencement of enrollment is expected imminently.

•

PD-1 x CTLA-4. MacroGenics continues to advance its preclinical bispecific DART and trispecific TRIDENT™ molecules that bind to and inhibit ligand interaction with PD-1 and CTLA-4, resulting in enhanced T-cell activation. By targeting these clinically validated checkpoint molecules simultaneously, MacroGenics’ DART and TRIDENT proteins hold the promise of enhanced anti-tumor activity together with a simplified development path.

•

Flotetuzumab. In July, MacroGenics was notified that its abstract titled “Interim Results from a Phase 1 First-in-Human study of flotetuzumab, a CD123 x CD3 bispecific DART molecule, in AML/MDS” had been accepted for oral presentation at the European Society for Medical Oncology Annual Congress, ESMO 2017. The Company continues to recruit patients with acute myeloid leukemia or myelodysplastic syndrome in the U.S. and Europe and has established a recommended dose and schedule and has initiated expansion cohorts for this study.

•	MGD007. MacroGenics continues to recruit patients with colorectal cancer in a Phase 1 study. The Company has initiated various expansion cohorts to define a recommended dose and schedule.

•	MGD010. In June, MacroGenics presented updated data from its Phase 1 study of MGD010 at the EULAR Annual European Congress of Rheumatology. The Company highlighted data demonstrating that a single dose administration of MGD010 at either 3 or 10 mg/kg delivers an immunomodulatory effect that counters B-cell function.

•	Cash Position: Cash, cash equivalents and marketable securities as of June 30, 2017, were $243.7 million, compared to $285.0 million as of December 31, 2016.

---

•

Revenue: Total revenue, consisting primarily of revenue from collaborative agreements, was $1.7 million for the quarter ended June 30, 2017, compared to $80.7 million for the quarter ended June 30, 2016. This decrease was primarily due to the receipt of $75.0 million in 2016 as an upfront payment under a collaboration and license agreement with Janssen for MGD015. Revenue from collaborative agreements includes the recognition of deferred revenue from payments received in previous periods as well as payments received during the period.

•	R&D Expenses: Research and development expenses were $34.5 million for the quarter ended June 30, 2017, compared to $33.3 million for the quarter ended June 30, 2016.

•	G&A Expenses: General and administrative expenses were $8.4 million for the quarter ended June 30, 2017, compared to $7.2 million for the quarter ended June 30, 2016. This increase was primarily due to increased professional fees, including consulting expenses, and increased employee compensation and benefit expense to support our overall growth.

•	Net Loss: Net loss was $40.7 million for the quarter ended June 30, 2017, compared to net income of $40.5 million for the quarter ended June 30, 2016.

•	Shares Outstanding: Shares outstanding as of June 30, 2017 were 36,680,522.

---

---