ACHN 2018 Proxy Statement

Section 16(a) Beneficial Ownership Reporting Compliance Section 16(a) of the Exchange Act requires our directors, executive officers and holders of more than 10% of our common stock to file with the SEC initial reports of ownership and reports of changes in ownership of common stock and other of our equity securities. Based solely on our review of copies of Section 16(a) reports furnished to us and representations made to us, we believe that during 2017 all our officers, directors and holders of more than 10% of our common stock complied with all Section 16(a) filing requirements. 59