IRWD (Ironwood Pharmaceuticals) Shares Outstanding (EOP): 165.2 Mil (As of Jun. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

IRWD Ironwood Pharmaceuticals Inc IRWD
65 GF Score
Price $4.06
GF Value $4.55
Valuation Modestly Undervalued
! 6 Warning Signs
View Full Analysis

What is Ironwood Pharmaceuticals Shares Outstanding (EOP)?

Ironwood Pharmaceuticals IRWD -7.21% 65 Shares Outstanding (EOP) is 165.2 Mil as of Jun. 2026. GuruFocus rates IRWD with a GF Score™ of 65/100 and a GF Value™ of $4.55 (Modestly Undervalued). The stock has 6 warning signs investors should review.

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. Ironwood Pharmaceuticals's shares outstanding for the quarter that ended in Jun. 2026 was 165.2 Mil.

Ironwood Pharmaceuticals's quarterly shares outstanding increased from Mar. 2026 (164.6 Mil) to Jun. 2026 (165.2 Mil). It means Ironwood Pharmaceuticals issued new shares from Mar. 2026 to Jun. 2026 .

Ironwood Pharmaceuticals's annual shares outstanding increased from Dec. 2024 (160.2 Mil) to Dec. 2025 (163.1 Mil). It means Ironwood Pharmaceuticals issued new shares from Dec. 2024 to Dec. 2025 .


Ironwood Pharmaceuticals  (NAS:IRWD) Shares Outstanding (EOP) Explanation

A company may buy back shares or issue shares in any fiscal period. If a company buys back shares, we should observe that the total number of shares decline. If the company issues new shares, the number of shares outstanding increases.

Usually the presence of treasury shares and a history of buyback are good indicators that company has competitive advantage. But studies have shown that companies usually buy back at wrong time. Buying back shares below its intrinsic value increases value for remaining shareholders. Buying back overvalued shares destroys value for existing shareholders.


Be Aware

Warren Buffett looks for consistency and upward long term trend. Because of share repurchase it is possible for net earnings trend to differ from EPS trend. He preferred net income over EPS. The companies with durable competitive advantage companies report higher % net earnings to total revenues.

Important: If a company is showing net earnings history greater than 20% on total revenues, it is probably benefiting from a long term competitive advantage.

If net earnings is less than 10%, likely to be in a highly competitive business.


Ironwood Pharmaceuticals Shares Outstanding (EOP) Related Terms


Ironwood Pharmaceuticals Shares Outstanding (EOP) Historical Data

* Premium members only.

The historical data trend for Ironwood Pharmaceuticals's Shares Outstanding (EOP) can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

Ironwood Pharmaceuticals Shares Outstanding (EOP) Chart

Ironwood Pharmaceuticals Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shares Outstanding (EOP)
Get a 7-Day Free Trial Premium Member Only Premium Member Only 162.04 154.03 156.35 160.21 163.06

Ironwood Pharmaceuticals Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shares Outstanding (EOP) Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 162.43 162.68 163.06 164.61 165.24

IRWD vs TLRY, AQST, ELTP: Shares Outstanding (EOP) Comparison

For the Drug Manufacturers - Specialty & Generic subindustry, Ironwood Pharmaceuticals's Shares Outstanding (EOP), along with its competitors' market caps and Shares Outstanding (EOP) data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


Ironwood Pharmaceuticals Shares Outstanding (EOP) vs Drug Manufacturers Industry

For the Drug Manufacturers industry and Healthcare sector, Ironwood Pharmaceuticals's Shares Outstanding (EOP) distribution charts can be found below:

* The bar in red indicates where Ironwood Pharmaceuticals's Shares Outstanding (EOP) falls into.


IRWD
65GF Score
Ironwood Pharmaceuticals Inc IRWD
Shares Outstanding (EOP) is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Ironwood Pharmaceuticals Shares Outstanding (EOP) Calculation

Shares outstanding are shares that have been authorized, issued, and purchased by investors and are held by them. They have voting rights and represent ownership in the corporation by the person that holds the shares. They should be distinguished from treasury shares, which are shares held by the corporation itself, having no exercisable rights.

Shares outstanding can be calculated as either basic or fully diluted. The fully diluted shares outstanding count includes diluting securities, such as options, warrants or convertibles.

Please note: GuruFocus named Shares Outstanding (EOP) is the shares for that end of period. It is usually used to calculate balance sheet related items, such as Book Value per Share, etc. While Shares Outstanding (Diluted Average) and Shares Outstanding (Basic Average) are the weighted average shares over a period of time (a year, a quarter, or so). They are usually used to calculate income statement or cashflow statement related items, such as Earnings per Share (Diluted), etc.

What does a Shares Outstanding (EOP) of 165.2 Mil mean?
Ironwood Pharmaceuticals (IRWD) has a Shares Outstanding (EOP) of 165.2 Mil as of Jun. 2026. The total shares a company has outstanding, at period-end. View historical data on Ironwood Pharmaceuticals and its competitors.
Is Ironwood Pharmaceuticals' Shares Outstanding (EOP) too high?
Ironwood Pharmaceuticals' current Shares Outstanding (EOP) is 165.2 Mil. Overall, Ironwood Pharmaceuticals has a GF Score™ of 65/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Ironwood Pharmaceuticals' Shares Outstanding (EOP) compare to TLRY and AQST?
Ironwood Pharmaceuticals' Shares Outstanding (EOP) of 165.2 Mil can be compared against companies in the Drug Manufacturers industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shares Outstanding (EOP) for a Drug Manufacturers company?
A good Shares Outstanding (EOP) depends on the Drug Manufacturers industry context. However, Shares Outstanding (EOP) should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shares Outstanding (EOP) mean?
A high Shares Outstanding (EOP) can signal that a stock is expensive relative to its fundamentals. The total shares a company has outstanding, at period-end. View historical data on Ironwood Pharmaceuticals and its competitors. Ironwood Pharmaceuticals's current Shares Outstanding (EOP) is 165.2 Mil. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ironwood Pharmaceuticals stock overvalued right now?
Based on GuruFocus' analysis, Ironwood Pharmaceuticals (IRWD) is currently considered Modestly Undervalued. The stock's GF Value™ is $4.55, compared to a current price of $4.06 — trading 10.9% below its estimated fair value. The current Shares Outstanding (EOP) is 165.2 Mil. Ironwood Pharmaceuticals' overall GF Score™ is 65/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shares Outstanding (EOP) calculated?
Shares Outstanding (EOP) is calculated from a company's financial statements. For Ironwood Pharmaceuticals (IRWD), the current Shares Outstanding (EOP) is 165.2 Mil as of Jun. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is Ironwood Pharmaceuticals (IRWD) Overvalued in 2026?

Based on GuruFocus' analysis, Ironwood Pharmaceuticals stock appears to be undervalued. The current stock price of $4.06 is trading 10.9% below its estimated GF Value™ of $4.55. GuruFocus considers Ironwood Pharmaceuticals to be Modestly Undervalued.

Key valuation signals for IRWD:

  • Shares Outstanding (EOP): 165.2 Mil
  • GF Value™: $4.55 vs. price of $4.06 (10.9% below fair value)
  • GF Score™: 65/100 with 6 warning signs

No single metric tells the full story. See the IRWD stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Ironwood Pharmaceuticals Business Description

Other Exchanges I76:Germany
Address 100 Summer Street, Suite 2300, Boston, MA, USA, 02110
Ironwood Pharmaceuticals Inc is a biotechnology company developing and commercializing life-changing therapies for people living with gastrointestinal, or GI, and rare diseases. It is focused on the development and commercialization of inventive product opportunities in areas of unmet need, leveraging its demonstrated expertise and capabilities in GI and rare diseases. LINZESS is its commercial product. LINZESS is also available for the treatment of adults with IBS-C or CIC in Mexico, adults with IBS-C or chronic constipation in Japan, and adults with IBS-C in China. Linaclotide is available under the trademarked name CONSTELLA for the treatment of adults with IBS-C or CIC and pediatric patients ages 6-17 years old with FC in Canada, and to adults with IBS-C in certain European countries.
65GF Score

Get the complete analysis for IRWD

Shares Outstanding (EOP) is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

$4.06
Price
$4.55
GF Value