Ironwood Pharmaceuticals IRWD
NASDAQ IRWD
$4.87 +0.06 (+1.25%)
At close: Nov 11, 2026 · 4:00 PM EST

Ironwood Pharmaceuticals (IRWD) Shares Outstanding (Diluted) (2009 - 2026)

Updated

Ironwood Pharmaceuticals (IRWD) reported Weighted Average Shares Outstanding (Diluted) of 167.18 million for Q2 2026, down 5.5% from 176.84 million a year earlier but up 0.3% from the prior quarter.

Analysis

Ironwood Pharmaceuticals (IRWD) Shares Outstanding (Diluted) (2009 - 2026) Analysis & Trends

For FY2025, Ironwood Pharmaceuticals posted Weighted Average Shares Outstanding (Diluted) of 162.98 million, up 1.8% from FY2024.

  • Weighted Average Shares Outstanding (Diluted) has a five-year compound annual growth rate of 0.3% (FY2020 to FY2025).
  • By year, Weighted Average Shares Outstanding (Diluted) came in at 160.08 million in FY2024 (+3.0%), 155.44 million in FY2023 (-16.6%), 186.31 million in FY2022 (+13.3%) and 164.42 million in FY2021 (+2.3%).
  • Five-year quarterly Weighted Average Shares Outstanding (Diluted) spans a low of 155.37 million in Q2 2023 and a high of 189.54 million in Q1 2022.
  • Year over year, Weighted Average Shares Outstanding (Diluted) gained in six of the last eight quarters, with growth averaging 1.6%.
  • The high point for year-over-year Weighted Average Shares Outstanding (Diluted) in five years was Q1 2022 (growth of 16.7%); the low point was Q4 2023 (a decline of 16.6%).
  • Per Business Quant data, the three quarters before Q2 2026 came in at 166.69 million (Q1 2026), 162.98 million (Q4 2025) and 177.76 million (Q3 2025).
Peer Set

Peer Comparison

# Company Market Cap Enterprise Value Gross Profit (Qtr) Shares Outstanding (Dil.) (Qtr)
1 Eli Lilly 1,348.13 Bn 1,321.74 Bn 20.46 Bn 893.40 Mn
2 Johnson & Johnson 675.90 Bn 595.76 Bn 17.30 Bn 2.45 Bn
3 AbbVie 519.45 Bn 487.50 Bn 13.12 Bn 1.77 Bn
4 Merck 364.95 Bn 327.95 Bn 13.19 Bn 2.48 Bn
5 Novartis Ag 311.58 Bn 285.16 Bn - 1.96 Bn
6 Astrazeneca 289.34 Bn 262.94 Bn 13.26 Bn 1.56 Bn
7 Amgen 251.64 Bn 203.30 Bn 7.58 Bn 546.00 Mn
8 Gilead Sciences 212.05 Bn 187.07 Bn 6.73 Bn 1.25 Bn
9 Pfizer 167.35 Bn 115.00 Bn 12.56 Bn 5.75 Bn
10 Ironwood Pharmaceuticals 796.30 Mn 194.87 Mn - 168.18 Mn
Historic Data

Historic Data

Download Data
DateValue
Sep 30, 2026 168.18 Mn
Jun 30, 2026 167.18 Mn
Mar 31, 2026 166.69 Mn
Dec 31, 2025 162.98 Mn
Sep 30, 2025 177.76 Mn
Jun 30, 2025 176.84 Mn
Mar 31, 2025 160.97 Mn
Dec 31, 2024 160.08 Mn
Sep 30, 2024 160.23 Mn
Jun 30, 2024 159.01 Mn
Mar 31, 2024 157.70 Mn
Dec 31, 2023 155.44 Mn
Sep 30, 2023 186.89 Mn
Jun 30, 2023 155.37 Mn
Mar 31, 2023 186.68 Mn
Dec 31, 2022 186.31 Mn
Sep 30, 2022 184.47 Mn
Jun 30, 2022 184.88 Mn
Mar 31, 2022 189.54 Mn
Dec 31, 2021 164.42 Mn
API Access

Ironwood Pharmaceuticals Shares Outstanding (Diluted) API

Pull this series into your own models, spreadsheets and apps with the Business Quant Historical Metrics API. The request below matches the chart above — change the frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.

https://data.businessquant.com/historic?slug=shares-outstanding-diluted&ticker=IRWD&period=max&api_key=YOUR_API_KEY