Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionJohnson Financial Group, Inc.
Latest Disclosed Ownership3,418 shares
Latest Disclosed Value $ 2,640,884
Johnson Financial Group, Inc. reports 6.25% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 7, 2026 - Johnson Financial Group, Inc. filed a 13F-HR form disclosing ownership of 3,418 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $2,640,884 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 3,217 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 6.25% 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)
2026-05-07 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,418 201 6.25 2,641 6.32 0.0685
2026-02-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,217 71 2.26 2,483 40.44 0.0929
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,146 -132 -4.03 1,769 2.79 0.0664
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,278 327 11.08 1,721 -8.07 0.0774
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,951 298 11.23 1,872 4.82 0.0916
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,653 -160 -5.69 1,785 -39.63 0.0844
2024-11-13 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,813 56 2.03 2,957 2.07 0.1351
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,757 1,844 201.97 2,898 229.95 0.1404
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 913 46 5.31 879 15.37 0.0473
2024-02-09 2023-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 867 -256 -22.80 761 -17.64 0.0417
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 867 -256 761 0.0251
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,123 -206 -15.50 924 -3.14 0.0642
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,329 -169 -11.28 955 -22.44 0.0660
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,498 329 28.14 1,231 45.91 0.0877
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,169 20 1.74 843 -1.52 0.0669
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,149 -209 -15.39 856 6.60 0.0789
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,358 36 2.72 803 -13.00 0.0575
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,322 54 4.26 923 15.23 0.0652
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,268 113 9.78 801 14.59 0.0508
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,155 -91 -7.30 699 0.43 0.0475
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,246 130 11.65 696 31.82 0.0455
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,116 -48 -4.12 528 -6.05 0.0355
2021-02-12 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,164 -36 -3.00 562 -16.37 0.0481
2020-11-12 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,200 219 22.32 672 9.80 0.0687
2020-08-11 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 981 -104 -9.59 612 15.47 0.0657
2020-05-14 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,085 -26 -2.34 530 27.10 0.0633
2020-02-14 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,111 -2,110 -65.51 417 -53.30 0.0377
2019-11-12 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,221 270 9.15 893 -3.25 0.0819
2019-08-09 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,951 682 30.06 923 -0.86 0.0821
2019-05-13 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,269 351 18.30 931 30.03 0.0826
2019-02-11 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,918 1,868 3,736.00 716 3,480.00 0.0737
2018-11-09 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 50 0 0.00 20 17.65 0.0020
2018-08-07 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 50 0 0.00 17 0.00 0.0019
2018-05-07 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 50 0 0.00 17 -10.53 0.0020
2018-02-12 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 50 0 0.00 19 -13.64 0.0023
2017-11-09 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 50 0 0.00 22 -12.00 0.0029
2017-08-10 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 50 -59 -54.13 25 -40.48 0.0036
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 109 15 15.96 42 23.53 0.0053
2017-02-07 2016-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 94 -100 -51.55 34 -56.41 0.0047
2017-02-02 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 94 34
2016-11-14 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 194 9 4.86 78 21.88 0.0104
2016-08-12 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 185 -60 -24.49 64 -27.27 0.0089
2016-05-09 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 245 -25 -9.26 88 -40.14 0.0176
2016-02-08 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 270 100 58.82 147 86.08 0.0305
2015-11-02 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 170 0 0.00 79 -9.20 0.0173
2015-08-11 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 170 -10 -5.56 87 7.41 0.0180
2015-05-12 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 180 0 0.00 81 9.46 0.0174
2015-02-10 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 180 10 5.88 74 21.31 0.0172
2014-11-14 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 170 0 0.00 61 27.08 0.0159
2014-08-06 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 170 -175 -50.72 48 -53.85 0.0127
2014-05-14 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 345 0 0.00 104 9.47 0.0304
2014-02-11 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 345 0 0.00 95 -12.04 0.0275
2013-11-14 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 345 0 0.00 108 38.46 0.0328
2013-08-14 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 345 345 78 0.0217
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.