Information Services Group, Inc.
US ˙ NasdaqGM ˙ US45675Y1047

SecurityIII / Information Services Group, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership271,665 shares
Latest Disclosed Value $ 1,043,193
Northern Trust Corp reports 2.89% increase in ownership of III / Information Services Group, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 271,665 shares of Information Services Group, Inc. (US:III) valued at $1,043,194 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 264,035 shares of Information Services Group, Inc.. This represents a change in shares of 2.89% during the quarter. The current value of the position is $1,179,026 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)
2026-05-14 2026-03-31 13F INFORMATION SVCS GROUP COM 45675Y104 271,665 7,630 2.89 1,043 -31.65 0.0000
2026-02-17 2025-12-31 13F INFORMATION SVCS GROUP COM 45675Y104 264,035 -14,059 -5.06 1,526 -4.57 0.0002
2025-11-14 2025-09-30 13F INFORMATION SVCS GROUP COM 45675Y104 278,094 -1,925 -0.69 1,599 18.97 0.0002
2025-08-13 2025-06-30 13F INFORMATION SVCS GROUP COM 45675Y104 280,019 -8,002 -2.78 1,344 19.36 0.0002
2025-05-13 2025-03-31 13F INFORMATION SVCS GROUP COM 45675Y104 288,021 -15,700 -5.17 1,126 11.05 0.0002
2025-02-14 2024-12-31 13F INFORMATION SVCS GROUP COM 45675Y104 303,721 12,814 4.40 1,014 5.74 0.0001
2024-11-13 2024-09-30 13F INFORMATION SVCS GROUP COM 45675Y104 290,907 6,366 2.24 960 14.71 0.0002
2024-08-14 2024-06-30 13F INFORMATION SVCS GROUP COM 45675Y104 284,541 -42,688 -13.05 837 -36.76 0.0001
2024-05-14 2024-03-31 13F INFORMATION SVCS GROUP COM 45675Y104 327,229 -11,180 -3.30 1,322 -17.01 0.0002
2024-02-13 2023-12-31 13F INFORMATION SVCS GROUP COM 45675Y104 338,409 -26,552 -7.28 1,594 -0.31 0.0003
2023-11-13 2023-09-30 13F INFORMATION SVCS GROUP COM 45675Y104 364,961 -4,486 -1.21 1,599 -19.29 0.0003
2023-08-11 2023-06-30 13F INFORMATION SVCS GROUP COM 45675Y104 369,447 69,788 23.29 1,980 29.84 0.0004
2023-05-15 2023-03-31 13F INFORMATION SVCS GROUP COM 45675Y104 299,659 -6,818 -2.22 1,525 8.23 0.0003
2023-02-13 2022-12-31 13F INFORMATION SVCS GROUP COM 45675Y104 306,477 2,903 0.96 1,410 -2.49 0.0003
2022-11-14 2022-09-30 13F INFORMATION SVCS GROUP COM 45675Y104 303,574 -21,151 -6.51 1,445 -34.17 0.0003
2022-08-12 2022-06-30 13F INFORMATION SVCS GROUP COM 45675Y104 324,725 235,126 262.42 2,195 259.84 0.0005
2022-05-13 2022-03-31 13F INFORMATION SVCS GROUP COM 45675Y104 89,599 -335 -0.37 610 -11.08 0.0001
2022-02-08 2021-12-31 13F INFORMATION SVCS GROUP COM 45675Y104 89,934 -2,277 -2.47 686 3.63 0.0001
2021-11-15 2021-09-30 13F INFORMATION SVCS GROUP COM 45675Y104 92,211 9,402 11.35 662 36.49 0.0001
2021-08-13 2021-06-30 13F INFORMATION SVCS GROUP COM 45675Y104 82,809 -306,913 -78.75 485 -71.72 0.0001
2021-05-12 2021-03-31 13F INFORMATION SVCS GROUP COM 45675Y104 389,722 -4,577 -1.16 1,715 32.53 0.0003
2021-02-11 2020-12-31 13F INFORMATION SVCS GROUP COM 45675Y104 394,299 -13,905 -3.41 1,294 50.12 0.0003
2020-11-16 2020-09-30 13F INFORMATION SVCS GROUP COM 45675Y104 408,204 -11,227 -2.68 862 -0.81 0.0002
2020-08-14 2020-06-30 13F INFORMATION SVCS GROUP COM 45675Y104 419,431 -9,666 -2.25 869 -21.21 0.0002
2020-05-14 2020-03-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 429,097 37,101 9.46 1,103 11.19 0.0003
2020-02-14 2019-12-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 391,996 -5,676 -1.43 992 0.40 0.0002
2019-11-13 2019-09-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 397,672 2,620 0.66 988 -20.90 0.0002
2019-08-13 2019-06-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 395,052 7,959 2.06 1,249 -13.50 0.0003
2019-05-13 2019-03-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 387,093 4,160 1.09 1,444 -11.03 0.0004
2019-02-12 2018-12-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 382,933 -631 -0.16 1,623 -11.50 0.0005
2018-11-14 2018-09-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 383,564 7,738 2.06 1,834 19.01 0.0004
2018-09-18 2018-06-30 13F/A-1 INFORMATION SERVICES GROUP I COM 45675Y104 375,826 194 0.05 1,541 -1.85 0.0004
2018-08-14 2018-06-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 375,826 194 1,541
2018-05-09 2018-03-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 375,632 -1,463 -0.39 1,570 -0.13 0.0004
2018-02-14 2017-12-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 377,095 -4,362 -1.14 1,572 2.48 0.0004
2017-11-13 2017-09-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 381,457 -327 -0.09 1,534 -2.23 0.0004
2017-08-11 2017-06-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 381,784 19,660 5.43 1,569 37.51 0.0004
2017-05-12 2017-03-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 362,124 4,291 1.20 1,141 -12.43 0.0003
2017-02-13 2016-12-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 357,833 2,003 0.56 1,303 -8.24 0.0004
2016-11-09 2016-09-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 355,830 235,683 196.16 1,420 215.56 0.0004
2016-08-12 2016-06-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 120,147 41,725 53.21 450 46.10 0.0001
2016-08-19 2016-03-31 13F/A-1 INFORMATION SERVICES GROUP I COM 45675Y104 78,422 9,864 14.39 308 24.19 0.0001
2016-05-13 2016-03-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 78,422 308
2016-02-12 2015-12-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 68,558 14,400 26.59 248 16.98 0.0001
2015-11-12 2015-09-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 54,158 54,158 0.00 212 0.0001
2015-08-13 2015-06-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 0 -340,530 -100.00 0 -100.00
2015-05-14 2015-03-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 340,530 -1,308 -0.38 1,359 -5.82 0.0004
2015-02-12 2014-12-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 341,838 -3,888 -1.12 1,443 9.82 0.0004
2014-11-13 2014-09-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 345,726 259,466 300.80 1,314 216.63 0.0004
2014-08-14 2014-06-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 86,260 31,562 57.70 415 54.85 0.0001
2014-05-14 2014-03-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 54,698 -1,102 -1.97 268 13.56 0.0001
2014-02-21 2013-12-31 13F/A-1 INFORMATION SERVICES GROUP I COM 45675Y104 55,800 0 0.00 236 2.16 0.0001
2014-02-12 2013-12-31 13F INFORMATION SERVICES GROUP I COM 45675Y104 55,800 236
2013-11-13 2013-09-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 55,800 10,197 22.36 231 162.50 0.0001
2013-08-09 2013-06-30 13F INFORMATION SERVICES GROUP I COM 45675Y104 45,603 45,603 88 0.0000
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.