Ironwood Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US46333X1081

SecurityIRWD / Ironwood Pharmaceuticals, Inc.
InstitutionShell Asset Management Co
Latest Disclosed Ownership21,021 shares
Latest Disclosed Value $ 28
Shell Asset Management Co reports 21.24% decrease in ownership of IRWD / Ironwood Pharmaceuticals, Inc.

On November 7, 2025 - Shell Asset Management Co filed a 13F-HR form disclosing ownership of 21,021 shares of Ironwood Pharmaceuticals, Inc. (US:IRWD) valued at $27,538 USD as of September 30, 2025. The entity filed a previous 13F-HR on July 23, 2025 disclosing 26,689 shares of Ironwood Pharmaceuticals, Inc.. The current value of the position is $71,471 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2025-11-07 2025-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 21,021 -5,668 -21.24 0 0.0028
2025-07-23 2025-06-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 26,689 0 0.00 0 0.0007
2025-05-14 2025-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 26,689 -1,120 -4.03 0 0.0019
2025-02-14 2024-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 27,809 0 0.00 0 0.0054
2024-11-07 2024-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 27,809 -687 -2.41 0 0.0051
2024-07-25 2024-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 28,496 -2,856 -9.11 0 0.0085
2024-02-14 2023-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 31,352 -9,478 -23.21 0 0.0166
2023-11-08 2023-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 40,830 -633 -1.53 0 0.0162
2023-07-28 2023-06-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 41,463 -234 -0.56 0 0.0174
2023-05-15 2023-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 41,697 -144 -0.34 0 0.0182
2023-02-07 2022-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 41,841 -8,838 -17.44 1 -100.00 0.0227
2022-11-14 2022-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 50,679 -13,280 -20.76 525 -28.77 0.0205
2022-08-09 2022-06-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 63,959 109 0.17 737 -8.22 0.0218
2022-05-04 2022-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 63,850 -9,445 -12.89 803 -6.08 0.0190
2022-02-09 2021-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 73,295 338 0.46 855 -10.28 0.0175
2021-11-04 2021-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 72,957 -3,130 -4.11 953 -2.66 0.0214
2021-08-12 2021-06-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 76,087 21,548 39.51 979 60.49 0.0190
2021-05-10 2021-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 54,539 32,112 143.18 610 139.22 0.0122
2021-02-16 2020-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 22,427 0 0.00 255 26.24 0.0053
2020-11-13 2020-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 22,427 0 0.00 202 -12.55 0.0047
2020-08-10 2020-06-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 22,427 11,157 99.00 231 102.63 0.0058
2020-05-11 2020-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 11,270 -172 -1.50 114 -25.00 0.0032
2020-02-13 2019-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 11,442 -281 -2.40 152 50.50 0.0033
2019-11-12 2019-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 11,723 -101 -0.85 101 -21.71 0.0023
2019-08-12 2019-06-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 11,824 -270 -2.23 129 -21.34 0.0029
2019-05-09 2019-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 12,094 0 0.00 164 31.20 0.0036
2019-02-13 2018-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 12,094 -1,000 -7.64 125 -48.35 0.0031
2018-11-13 2018-09-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 13,094 0 0.00 242 -3.20 0.0048
2018-08-10 2018-06-30 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 13,094 -739 -5.34 250 17.37 0.0051
2018-05-14 2018-03-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 13,833 0 0.00 213 2.90 0.0042
2018-02-09 2017-12-31 13F IRONWOOD PHARMACEUTICALS COM CL A 46333X108 13,833 13,833 207 0.0041
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.