X0206 3 2021-07-19 0 0001446847 IRONWOOD PHARMACEUTICALS INC IRWD 0001873731 Silver Ronald 100 SUMMER STREET SUITE 2300 BOSTON MA 02110 0 1 0 0 Principal Accounting Officer Class A Common Stock 43242 D Employee Stock Option (Right to Buy) 17.37 2028-07-02 Class A Common Stock 9663 D The option, granted as a new hire award, vested as to 25% of the shares of Class A Common Stock on June 4, 2019, and 2.08333% of the shares of Class A Common Stock vest each month thereafter for the next 36 months. Exhibit 24: Power of Attorney /s/ Brian Tessler, Attorney-in-Fact 2021-07-22