1. Interim Consolidated Financial Statements

The accompanying unaudited interim condensed consolidated financial statements of Pieris Pharmaceuticals, Inc. (“Pieris” or the “Company”) were prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information. All significant intercompany balances and transactions have been eliminated in the consolidation. Certain information and footnotes normally included in financial statement prepared in accordance with U.S. GAAP have been omitted pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Accordingly, the statements do not include all of the information and notes required by U.S. GAAP for complete annual consolidated financial statements. It is recommended that these financial statements be read in conjunction with the consolidated financial statements and related footnotes that appear in the Annual Report on Form 10-K of the Company for the year ended December 31, 2016 filed with the SEC on March 30, 2017 (the “2016 Annual Report”).

In the opinion of management, the unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited condensed consolidated financial statements for the year ending December 31, 2016, and all adjustments, including normal recurring adjustments, considered necessary for the fair presentation of the Company’s unaudited interim consolidated financial statements have been included. The results of operations, for the three and six months ended June 30, 2017, are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 or any future period.

Use of estimates

The preparation of the condensed consolidated financial statements in accordance with U.S. GAAP requires management to make estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities, the reported amounts of revenues, and expenses in the financial statements and disclosures in the accompanying notes. Significant estimates are used for, but are not limited to, revenue recognition, deferred tax assets, liabilities and valuation allowances, fair value of stock options and various accruals. Management evaluates its estimates on an ongoing basis. Actual results and outcomes could differ materially from management’s estimates, judgments and assumptions.