Ironwood Pharmaceuticals, Inc. (NASDAQ: IRWD) today announced it will host its fourth quarter 2012 investor update conference call and webcast at 8:30 a.m. Eastern Time on Tuesday, January 15, 2013. Individuals interested in participating in the call should dial (877) 643-7155 (U.S. and Canada) or (914) 495-8552 (international) using conference ID number 83300312. To access the webcast, please visit the Investors section of Ironwood’s website at www.ironwoodpharma.com at least 15 minutes prior to the start of the call to ensure adequate time for any software downloads that may be required. The call will be available for replay via telephone starting January 15, 2013 at approximately 11:30 a.m. Eastern Time, running through 11:59 p.m. Eastern Time on January 22, 2013. To listen to the replay, dial (855) 859-2056 (U.S. and Canada) or (404) 537-3406 (international) using conference ID number 83300312. The archived webcast will be available on Ironwood’s website for 14 days beginning approximately one hour after the call. About Ironwood Pharmaceuticals Ironwood Pharmaceuticals (NASDAQ: IRWD) is an entrepreneurial pharmaceutical company dedicated to the art and science of great drugmaking. Ironwood is located in Cambridge, Mass. To learn more, visit www.ironwoodpharma.com.