IRONWOOD PHARMACEUTICALS INC
IRWDIronwood Pharmaceuticals, Inc. is a publicly traded pharmaceutical company. It was originally called Microbia, Inc. Microbia was founded by postdocs from the lab of Gerald Fink at the Whitehead Institute to commercialize approaches that had been developed in the lab to improve industrial fermentation of fungi, to genetically engineer them to produce secondary metabolites more efficiently or to produce new ones as leads for drug discovery or as products for use in industry, and to identify drug targets in fungi for antifungal drug discovery. In 2002 the company hired John Talley to lead their antifungal drug discovery efforts, which at the time were focused on identifying small molecules that could inhibit fungal invasins, along with Mark Currie who had also worked at Searle division of Monsanto with Talley, and then had gone to Sepracor, and also Richard Bailey, who had run Monsanto's nutritional business. Currie directed the efforts that led to the discovery of linaclotide, which was based on an enterotoxin produced by some strains of Escherichia coli that cause traveler’s diarrhea.
Drugs in Pipeline
9
Phase 3 Programs
2
Upcoming Catalysts
1
Next Catalyst
Aug 6, 2026
22dMarket Overview
Stock performance and key metrics
1 upcoming, 0 past
How IRWD's past catalysts played out
Linaclotide
Irritable Bowel Syndrome With Constipation
IW-3718
Gastroesophageal Reflux Disease (GERD)
Linaclotide Acetate
Irritable Bowel Syndrome With Constipation
PPI
Gastroesophageal Reflux Disease
MD-7246
Irritable Bowel Syndrome With Diarrhea (IBS-D)
MD-0727
Hypercholesterolemia
MD-1100 Acetate
Constipation
IW-9179
Diabetic Gastroparesis
IW-6118
Healthy
| Drug Name | Phase | Indication | Designations | Patent |
|---|---|---|---|---|
Linaclotide | Phase 3 | Irritable Bowel Syndrome With Constipation | - | - |
IW-3718 | Phase 3 | Gastroesophageal Reflux Disease (GERD) | - | - |
Linaclotide Acetate | Phase 2 | Irritable Bowel Syndrome With Constipation | - | - |
PPI | Phase 2 | Gastroesophageal Reflux Disease | - | - |
MD-7246 | Phase 2 | Irritable Bowel Syndrome With Diarrhea (IBS-D) | - | - |
MD-0727 | Phase 2 | Hypercholesterolemia | - | - |
MD-1100 Acetate | Phase 2 | Constipation | - | - |
IW-9179 | Phase 2 | Diabetic Gastroparesis | - | - |
IW-6118 | Phase 2 | Healthy | - | - |
Full breakdown — the signals behind the verdict
Frequently asked questions
What is in IRONWOOD PHARMACEUTICALS INC's drug pipeline?→
CatalystAlert tracks 9 drug candidates in IRONWOOD PHARMACEUTICALS INC's (IRWD) pipeline across Phase 3, Phase 2. Its lead program is Linaclotide (Phase 3). Each drug's phase, indication and upcoming catalysts are listed on this page.
When is IRONWOOD PHARMACEUTICALS INC's next FDA catalyst?→
IRONWOOD PHARMACEUTICALS INC's (IRWD) next tracked catalyst is a Earnings expected August 6, 2026. See the catalyst timeline on this page for the full schedule of PDUFA dates, trial readouts and FDA events.
How do I track IRWD biotech catalysts?→
Add IRWD to your CatalystAlert watchlist for alerts ahead of each catalyst, and follow IRONWOOD PHARMACEUTICALS INC's live catalyst calendar, drug pipeline and clinical-trial timeline on this page — sourced from ClinicalTrials.gov, FDA and SEC filings.
