https://investor.ironwoodpharma.com/press-releases/press-release-details/2015/Ironwood-Pharmaceuticals-Announces-Proposed-Offering-of-300-Million-of-Convertible-Senior-Notes/default.aspx
https://investor.ironwoodpharma.com/press-releases/press-release-details/2015/Ironwood-Pharmaceuticals-Announces-Proposed-Offering-of-300-Million-of-Convertible-Senior-Notes/default.aspx