Ironwood(IRWD) - 2020 Q4 - Annual Report

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION (Registrant's telephone number, including area code) Securities registered pursuant to Section 12(b) of the Act: | Title of each class | Trading Symbol(s) | Name of each exchange on which registered | | --- | --- | --- | | Class A Common Stock, $0.001 par value | IRWD | Nasdaq Global Select Market | Securities registered pursuant to Section 12(g) of the Act: None Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION ...