ACHN 2017 Annual Report

Incorporated by Reference Exhibit No. Description Form SEC Filing date Exhibit Number Filed with this 10-K # 10.23 Form of Inducement Grant Nonstatutory Stock Option Agreement 10-Q 11/01/17 10.1 23.1 Consent of PricewaterhouseCoopers LLP, Independent Registered Public Accounting Firm. X 31.1 Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/Rule 15d-14(a) of the Securities Exchange Act of 1934 X 31.2 Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/Rule 15d-14(a) of the Securities Exchange Act of 1934 X 32.1 Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. X 32.2 Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. X 101.CAL XBRL Taxonomy Calculation Linkbase Document X 101.INS XBRL Instance Document X 101.SCH XBRL Taxonomy Extension Schema Document X 101.DEF XBRL Taxonomy Extension Definition Linkbase Document X 101.LAB XBRL Taxonomy Label Linkbase Document X 101.PRE XBRL Taxonomy Presentation Linkbase Document X # Management contracts or compensatory plans or arrangement † Indicates confidential treatment requested as to certain portions, which portions were omitted and filed separately with the Securities and Exchange Commission pursuant to a Confidential Treatment Request. Attached as Exhibit 101 to this report are the following formatted in XBRL (Extensible Business Reporting Language): (i) Balance Sheets at December 31, 2017 and December 31, 2016, (ii) Statements of Comprehensive Loss for the years ended December 31, 2017, 2016 and 2015, (iii) Statements of Stockholders’ Equity and Comprehensive Loss for the years ended December 31, 2017, 2016 and 2015, (iv) Statements of Cash Flows for the years ended December 31, 2017, 2016 and 2015 and (v) Notes to Financial Statements. ITEM 16. FORM 10-K SUMMARY None. 100