ICON Public Limited Company
US ˙ NasdaqGS ˙ IE0005711209

SecurityICLR / ICON Public Limited Company
InstitutionSei Investments Co
Latest Disclosed Ownership785,937 shares
Latest Disclosed Value $ 143,213,292
Sei Investments Co reports 12.39% increase in ownership of ICLR / ICON Public Limited Company

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 785,937 shares of ICON Public Limited Company (US:ICLR) valued at $143,213,440 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 699,274 shares of ICON Public Limited Company. This represents a change in shares of 12.39% during the quarter. The current value of the position is $113,096,334 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)
2026-02-13 2025-12-31 13F ICON SHS G4705A100 785,937 86,663 12.39 143,213 17.02 0.1414
2025-11-13 2025-09-30 13F ICON SHS G4705A100 699,274 93,047 15.35 122,380 38.79 0.1316
2025-08-14 2025-06-30 13F ICON SHS G4705A100 606,227 113,091 22.93 88,176 2.19 0.1022
2025-05-14 2025-03-31 13F/A-1 ICON SHS G4705A100 493,136 199,409 67.89 86,290 40.09 0.1111
2025-05-13 2025-03-31 13F ICON SHS G4705A100 296,592 2,865 61,802 0.0672
2025-02-11 2024-12-31 13F ICON SHS G4705A100 293,727 61,666 26.57 61,599 -7.61 0.0791
2024-11-12 2024-09-30 13F ICON SHS G4705A100 232,061 -9,209 -3.82 66,673 -11.84 0.0866
2024-08-13 2024-06-30 13F ICON SHS G4705A100 241,270 -11,614 -4.59 75,630 -10.98 0.1071
2024-05-07 2024-03-31 13F ICON SHS G4705A100 252,884 -35,666 -12.36 84,957 4.01 0.1245
2024-02-14 2023-12-31 13F ICON SHS G4705A100 288,550 -5,980 -2.03 81,680 12.62 0.1311
2023-11-14 2023-09-30 13F ICON SHS G4705A100 294,530 733 0.25 72,529 -1.33 0.1303
2023-08-11 2023-06-30 13F ICON SHS G4705A100 293,797 -22,242 -7.04 73,507 8.89 0.1282
2023-05-12 2023-03-31 13F ICON SHS G4705A100 316,039 37,530 13.48 67,503 24.77 0.1254
2023-02-10 2022-12-31 13F ICON SHS G4705A100 278,509 -1,520 -0.54 54,101 5.12 0.1202
2022-11-14 2022-09-30 13F ICON SHS G4705A100 280,029 38,798 16.08 51,464 -1.55 0.1148
2022-08-15 2022-06-30 13F ICON SHS G4705A100 241,231 -1,665 -0.69 52,273 -11.48 0.1129
2022-05-13 2022-03-31 13F ICON SHS G4705A100 242,896 -115,290 -32.19 59,051 -46.77 0.1187
2022-02-14 2021-12-31 13F ICON SHS G4705A100 358,186 87,661 32.40 110,934 56.49 0.2081
2021-11-12 2021-09-30 13F ICON SHS G4705A100 270,525 61,745 29.57 70,889 64.27 0.1487
2021-08-06 2021-06-30 13F ICON SHS G4705A100 208,780 -4,898 -2.29 43,153 2.85 0.0957
2021-05-12 2021-03-31 13F ICON SHS G4705A100 213,678 15,886 8.03 41,957 8.79 0.1057
2021-02-08 2020-12-31 13F ICON SHS G4705A100 197,792 -1,942 -0.97 38,567 1.04 0.0997
2020-12-04 2020-09-30 13F/A-1 ICON SHS G4705A100 199,734 15,312 8.30 38,171 22.86 0.1105
2020-11-06 2020-09-30 13F ICON SHS G4705A100 199,925 15,503 38,207 91,993.9611
2020-08-17 2020-06-30 13F/A-1 ICON SHS G4705A100 184,422 -57,809 -23.87 31,068 -5.69 0.0964
2020-08-11 2020-06-30 13F ICON SHS G4705A100 379,382 137,151 65,324 177,194.8272
2020-05-14 2020-03-31 13F ICON SHS G4705A100 242,231 -138,424 -36.36 32,941 -49.75 0.1210
2020-02-06 2019-12-31 13F ICON SHS G4705A100 380,655 24,572 6.90 65,553 24.92 0.1955
2019-11-12 2019-09-30 13F ICON SHS G4705A100 356,083 -10,937 -2.98 52,476 -7.15 0.1342
2019-08-14 2019-06-30 13F ICON SHS G4705A100 367,020 5,736 1.59 56,514 14.51 0.1846
2019-05-15 2019-03-31 13F ICON S3 G4705A100 361,284 -16,361 -4.33 49,351 -14.82 0.1657
2019-02-13 2018-12-31 13F ICON SHS G4705A100 377,645 836 0.22 57,938 0.00 0.2063
2018-11-08 2018-09-30 13F ICON SHS G4705A100 376,809 -17,706 -4.49 57,938 10.81 0.2100
2018-08-03 2018-06-30 13F ICON SHS G4705A100 394,515 -10,498 -2.59 52,285 9.27 0.1777
2018-05-11 2018-03-31 13F ICON SHS G4705A100 405,013 -13,470 -3.22 47,848 1.95 0.1834
2018-02-08 2017-12-31 13F ICON SHS G4705A100 418,483 -47,415 -10.18 46,933 -11.54 0.1630
2017-11-06 2017-09-30 13F ICON SHS G4705A100 465,898 -163 -0.03 53,056 16.41 0.1886
2017-07-31 2017-06-30 13F ICON SHS G4705A100 466,061 -68,754 -12.86 45,576 6.90 0.1817
2017-05-05 2017-03-31 13F ICON SHS G4705A100 534,815 1,369 0.26 42,635 6.28 0.1868
2017-02-02 2016-12-31 13F ICON SHS G4705A100 533,446 -29,421 -5.23 40,115 -7.89 0.1943
2016-11-04 2016-09-30 13F ICON SHS G4705A100 562,867 -3,492 -0.62 43,549 9.83 0.2212
2016-08-11 2016-06-30 13F ICON SHS G4705A100 566,359 -59,947 -9.57 39,651 -15.70 0.2378
2016-05-10 2016-03-31 13F/A-1 ICON SHS G4705A100 626,306 36,551 6.20 47,036 2.64 0.2927
2016-02-03 2015-12-31 13F ICON SHS G4705A100 589,755 34,632 6.24 45,824 16.31 0.2793
2015-11-02 2015-09-30 13F/A-1 ICON SHS G4705A100 555,123 -64,353 -10.39 39,397 -5.50 0.3616
2015-10-30 2015-09-30 13F ICON SHS G4705A100 555,123 39,398
2015-08-07 2015-06-30 13F/A-1 ICON SHS G4705A100 619,476 988 0.16 41,691 -4.42 0.3769
2015-08-04 2015-06-30 13F ICON SHS G4705A100 619,476 988 41,691 0.3769
2015-05-14 2015-03-31 13F/A-1 ICON SHS G4705A100 618,488 3,794 0.62 43,621 39.17 0.3788
2015-05-01 2015-03-31 13F ICON SHS G4705A100 618,488 43,621
2015-02-10 2014-12-31 13F ICON SHS G4705A100 614,694 614,694 31,344 0.2771
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.