Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionLegal & General Group Plc
Latest Disclosed Ownership732,054 shares
Latest Disclosed Value $ 565,614,200
Legal & General Group Plc reports 1.48% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 8, 2026 - Legal & General Group Plc filed a 13F-HR form disclosing ownership of 732,054 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $565,614,200 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 743,027 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -1.48% during the quarter.

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)
2026-05-08 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 732,054 -10,973 -1.48 565,614 -1.38 0.1308
2026-02-09 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 743,027 -27,332 -3.55 573,520 32.41 0.1272
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 770,359 30,778 4.16 433,150 11.56 0.0972
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 739,581 -7,452 -1.00 388,280 -18.05 0.0964
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 747,033 -30,444 -3.92 473,791 -14.45 0.1290
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 777,477 -7,617 -0.97 553,820 -32.90 0.1465
2025-02-28 2024-09-30 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 785,094 1,301 0.17 825,326 0.19 0.2171
2024-11-14 2024-09-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 959,127 -18,982 1,008,277 0.2101
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 959,127 -18,982 1,008,277 0.1061
2025-05-29 2024-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 783,793 -35,489 -4.33 823,792 4.47 0.2327
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 978,109 168 1,028,024 0.2301
2025-05-29 2024-03-31 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 819,282 -7,406 -0.90 788,549 8.60 0.2270
2024-07-01 2024-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 977,941 -7,599 941,257 0.2197
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 977,941 -7,599 941,257 0.1132
2025-05-29 2023-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 826,688 6,480 0.79 726,072 7.57 0.2256
2024-02-15 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 985,540 165,332 865,590 0.2221
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 820,208 -26,921 -3.18 674,998 10.89 0.2355
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 847,129 -1,998 -0.24 608,697 -12.76 0.1980
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 849,127 17,758 2.14 697,701 16.32 0.2495
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 831,369 -41,616 -4.77 599,824 -0.26 0.2302
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 872,985 -10,302 -1.17 601,374 15.18 0.2349
2022-08-22 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 883,287 75,391 9.33 522,138 -7.46 0.1848
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 807,896 57,387 7.65 564,250 19.05 0.1716
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 750,509 -15,609 -2.04 473,963 2.23 0.1433
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 766,118 21,066 2.83 463,637 11.41 0.1507
2021-08-12 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 745,052 36,408 5.14 416,142 24.11 0.1391
2021-05-17 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 708,644 -14,582 -2.02 335,288 -4.04 0.1249
2021-02-12 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 723,226 39,979 5.85 349,397 -8.65 0.1368
2020-11-13 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 683,247 -9,181 -1.33 382,467 -11.43 0.1709
2020-08-14 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 692,428 157,929 29.55 431,815 65.71 0.2087
2020-05-14 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 534,499 12,205 2.34 260,584 32.88 0.1524
2020-02-13 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 522,294 28,427 5.76 196,103 26.86 0.0934
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 493,867 15,410 3.22 154,582 -21.32 0.0832
2019-05-15 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 478,457 93,957 24.44 196,464 36.80 0.1122
2019-02-15 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 384,500 24,498 6.80 143,610 -1.27 0.1113
2018-11-20 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 360,002 8,792 2.50 145,455 20.05 0.1041
2018-08-10 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 351,210 -13,767 -3.77 121,164 -3.58 0.0935
2018-05-17 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 364,977 3,437 0.95 125,667 -7.55 0.0959
2018-02-13 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 361,540 -9,570 -2.58 135,926 -18.08 0.0984
2017-11-09 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 371,110 2,729 0.74 165,929 -8.29 0.1248
2017-08-03 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 368,381 8,060 2.24 180,929 29.58 0.1462
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 360,321 16,117 4.68 139,629 10.51 0.1185
2017-02-13 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 344,204 2,207 0.65 126,354 -8.10 0.1179
2016-10-12 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 341,997 4,324 1.28 137,490 16.59 0.1393
2016-08-16 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 337,673 1,590 0.47 117,925 -2.65 0.1243
2016-05-16 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 336,083 -5,709 -1.67 121,138 -34.71 0.1341
2016-02-16 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 341,792 25,766 8.15 185,549 26.23 0.2097
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 316,026 10,886 3.57 146,996 -5.57 0.1792
2015-07-31 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 305,140 2,062 0.68 155,661 13.76 0.1828
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 303,078 -55 -0.02 136,834 10.03 0.1636
2015-02-20 2014-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 303,133 -2,805 -0.92 124,360 12.75 0.1463
2015-02-17 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 303,133 -2,805 124,360 0.1532
2014-11-14 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 305,938 -15,504 -4.82 110,296 21.48 0.1323
2014-08-13 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 321,442 3,032 0.95 90,797 -5.04 0.1058
2014-05-14 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 318,410 4,713 1.50 95,612 10.74 0.1161
2014-02-07 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 313,697 2,275 0.73 86,342 -11.39 0.1045
2013-11-12 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 311,422 13,718 4.61 97,435 45.54 0.1283
2013-08-01 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 297,704 297,704 66,948 0.0925
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.