Estimated market cap $799.61MShares outstanding from the company’s latest SEC filing (all share classes, each priced at its own close; ADRs converted to ADS) × last close from Tiingo. Updated daily. This figure: shares as of Oct 31, 2026, last close Nov 13, 2026.165.55M shares, shares as of Oct 31, 2026CIK 1446847The SEC’s Central Index Key, the number it uses to identify every company and person that files.
Insider trades, 12 mo
0 buys · 18 sells
$22.62M sold, open market
Congress trades, 24 mo
—
No disclosed trades
13F holders
…
Lobbying, 12 mo
—
No lobbying filings
Federal contracts, 12 mo
—
None matched
Ask your AI:
Latest 10-Q
What changed in Ironwood Pharmaceuticals, Inc.'s latest quarterly report, compared with the one before.
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Insider trades
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
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13F holders
Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
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Top 10 holders.Premium lists every holder, with CSV downloads.
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
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Lobbying
What Ironwood Pharmaceuticals, Inc. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
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H-1B labor applications at Ironwood Pharmaceuticals, Inc.
0 certified in 12 mo
Labor condition applications decided by the Department of Labor, matched to Ironwood Pharmaceuticals, Inc. by employer name. An application is not a hire.
Median yearly wage offered, full-time certified applications, Jul 2025 to Jun 2026: —The wage the employer offered, as filed, with its unit. The yearly figure restates it per year (hourly x 2,080, weekly x 52, every two weeks x 26, monthly x 12) from the low end of the offered range. It is not what the worker was paid.
H-1B labor applications decided at Ironwood Pharmaceuticals, Inc. by quarter
We match the employer's name to a public company automatically, including a reviewed list of subsidiaries. A subsidiary can be missed and a similar name can be matched wrongly. The files carry no worker names.
Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
13F holders, Q3 2026Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
160
57.8% of shares · 63 added
Latest 10-Q
Q3 2026
What changed in Ironwood Pharmaceuticals, Inc.'s latest quarterly report, compared with the one before.
Filed Nov 5, 2026 · Quarter ended Sep 30, 2026
Summary text goes here once it has loaded. Summary text goes here once it has loaded.
Summary text goes here once it has loaded.
Summary text goes here once it has loaded.
AI summary of changes vs the prior report. Written by AI from the paragraphs that changed, and checked against them. This is information, not investment advice.
Compared with the 10-Q for the quarter ended Jun 30, 2026. Sections compared: management's discussion, risk factors and controls and procedures.
Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.
No open-market insider trades reported since Jul 7, 2026. Insiders have two business days to file.
Recent insider trades
How the stock has done since the trade date, measured against the S&P 500 over the same days. It describes the stock, not the trader's actual gain or loss.
160 funds report IRWD. Values checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.
Funds own 97% of shares (Q2 2026)Fund managers with more than $100 million in US-listed stocks file a 13F each quarter. It lists their long stock positions only (shorts, options and bonds are left out) and can arrive up to 45 days after the quarter ends, so this is a snapshot of the quarter end. We add up the shares every fund reports in this class and divide by the shares outstanding. The total can pass 100%: the same shares are often reported by more than one manager (an adviser and the fund it runs), lent shares can be reported twice, and the share count can be out of date after buybacks. We divided 160.55M reported shares by 165.24M shares, from the company’s SEC filing as of Jul 31, 2026.
211 funds hold the stock.
Q3 2026: 58% · 5,560 of ~8,900 funds reported so farFunds have 45 days after a quarter ends to file. This quarter’s reports are still arriving, so the figure only counts the funds that have filed so far and will usually rise.
Q2 202590%
Q3 202591%
Q4 202595%
Q1 202698%
Q2 202697%
Q3 2026 (so far)58%
Q3 2026. 31 new, 63 added to, 42 trimmed, 84 exited since Q2 2026.
One of these funds reports its values in thousands of dollars; its figures are shown in dollars.
Download CSVEvery fund that holds IRWD, not only these ten. A download holds at most 10,000 rows; narrow the filters to get a smaller slice.
Trades by members of Congress
Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.
No recent congressional trades for this company.
Lobbying
What Ironwood Pharmaceuticals, Inc. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.
No recent lobbying filings for this company.
Institutional ownership over time
How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.
Funds holding the stock
Shares they report
Funds holding the stock by quarter
Q2 2013
128
—
103.47M
$1.0B
Q3 2013
122
-6
111.75M
$1.3B
Q4 2013
122
0
115.68M
$1.3B
Q1 2014
138
+16
131.86M
$1.6B
Q2 2014
138
0
126.85M
$1.9B
Q3 2014
140
+2
131.91M
$1.7B
Q4 2014
129
-11
133.62M
$2.0B
Q1 2015
142
+13
133.64M
$2.1B
Q2 2015
137
-5
143.58M
$1.7B
Q3 2015
130
-7
157.07M
$1.6B
Q4 2015
137
+7
140.02M
$1.6B
Q1 2016
136
-1
141.09M
$1.5B
Q2 2016
145
+9
137.23M
$1.8B
Q3 2016
153
+8
138.06M
$2.2B
Q4 2016
164
+11
140.73M
$2.2B
Q1 2017
162
-2
146.61M
$2.5B
Q2 2017
167
+5
147.59M
$2.8B
Q3 2017
149
-18
157.19M
$2.5B
Q4 2017
158
+9
152.84M
$2.3B
Q1 2018
149
-9
152.31M
$2.4B
Q2 2018
148
-1
149.26M
$2.9B
Q3 2018
151
+3
146.28M
$2.7B
Q4 2018
145
-6
151.18M
$1.6B
Q1 2019
156
+11
155.20M
$2.1B
Q2 2019
152
-4
161.71M
$1.8B
Q3 2019
164
+12
173.77M
$1.5B
Q4 2019
195
+31
179.65M
$2.4B
Q1 2020
193
-2
178.63M
$1.8B
Q2 2020
202
+9
178.15M
$1.8B
Q3 2020
190
-12
171.91M
$1.5B
Q4 2020
199
+9
171.92M
$2.0B
Q1 2021
210
+11
171.15M
$1.9B
Q2 2021
209
-1
174.96M
$2.3B
Q3 2021
229
+20
177.43M
$2.3B
Q4 2021
214
-15
172.60M
$2.0B
Q1 2022
220
+6
166.44M
$2.1B
Q2 2022
239
+19
175.02M
$2.1B
Q3 2022
245
+6
169.75M
$1.8B
Q4 2022
250
+5
167.83M
$2.1B
Q1 2023
254
+4
164.89M
$1.7B
Q2 2023
252
-2
166.10M
$1.8B
Q3 2023
248
-4
159.67M
$1.5B
Q4 2023
251
+3
168.70M
$1.9B
Q1 2024
261
+10
178.91M
$1.6B
Q2 2024
227
-34
173.26M
$1.1B
Q3 2024
221
-6
163.78M
$675.0M
Q4 2024
223
+2
164.24M
$727.6M
Q1 2025
200
-23
155.51M
$228.6M
Q2 2025
155
-45
146.22M
$104.9M
Q3 2025
166
+11
148.77M
$195.0M
Q4 2025
199
+33
154.67M
$520.3M
Q1 2026
227
+28
161.50M
$566.8M
Q2 2026
212
-15
160.56M
$675.8M
Q3 2026
160
-52
95.64M
$379.2M
Each point is a quarter-end, from Q2 2013 to Q3 2026. A fund's 13F lists its long positions in US-listed securities as of the last day of the quarter and arrives up to 45 days later, so each point shows holdings at quarter-end, not on the day they were reported.
Common shares only; options and bonds are left out. When a fund amends a report, the amended version is the one counted.
The history follows the company's current CUSIP number (46333X108). If the company's shares were ever re-issued under a different CUSIP, the quarters before the change are not part of this series, so the first point (Q2 2013) can be later than the stock's first appearance in 13F reports.
Share counts are adjusted for stock splits; none took place between these quarters. Values are in dollars as reported at the time and are not adjusted.
A quarter appears once our daily update has built its summary. If a summary cannot be built, older reports are kept and the chart shows the quarters it has until the next update repairs it.