Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionUs Bancorp \de\
Latest Disclosed Ownership5,628 shares
Latest Disclosed Value $ 4,348,795
Us Bancorp \de\ reports 1.46% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 14, 2026 - Us Bancorp \de\ filed a 13F-HR form disclosing ownership of 5,628 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $4,348,795 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 5,547 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 1.46% 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)
2026-05-14 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,628 81 1.46 4,349 1.57 0.0016
2026-01-30 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,547 -155 -2.72 4,282 33.53 0.0050
2025-11-12 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,702 215 3.92 3,206 11.32 0.0038
2025-07-24 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,487 -858 -13.52 2,881 -28.43 0.0036
2025-05-08 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 6,345 279 4.60 4,024 -6.85 0.0054
2025-02-05 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 6,066 1,078 21.61 4,321 -17.60 0.0057
2024-10-28 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,988 -175 -3.39 5,244 -3.37 0.0067
2024-08-07 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,163 153 3.05 5,426 12.53 0.0074
2024-05-08 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5,010 69 1.40 4,822 11.13 0.0067
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 4,941 310 6.69 4,340 13.85 0.0064
2023-11-03 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,631 59 1.29 3,811 16.01 0.0062
2023-08-10 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4,572 -536 -10.49 3,285 -21.73 0.0053
2023-05-09 2023-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 5,108 168 3.40 4,197 17.76 0.0071
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 4,940 -843 -14.58 3,564 -10.54 0.0063
2022-10-27 2022-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 5,783 74 1.30 3,984 18.01 0.0082
2022-08-01 2022-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 5,709 -289 -4.82 3,376 -19.43 0.0065
2022-05-11 2022-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 5,998 37 0.62 4,190 11.29 0.0070
2022-02-11 2021-12-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 5,961 37 0.62 3,765 5.02 0.0059
2021-11-10 2021-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 5,924 -187 -3.06 3,585 5.04 0.0067
2021-08-05 2021-06-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 6,111 93 1.55 3,413 19.88 0.0064
2021-04-28 2021-03-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 6,018 626 11.61 2,847 9.29 0.0058
2021-02-04 2020-12-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 5,392 831 18.22 2,605 2.04 0.0056
2020-11-10 2020-09-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 4,561 1,302 39.95 2,553 25.64 0.0062
2020-08-07 2020-06-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 3,259 -252 -7.18 2,032 18.62 0.0053
2020-05-13 2020-03-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 3,511 -239 -6.37 1,713 21.75 0.0053
2020-02-04 2019-12-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 3,750 94 2.57 1,407 38.89 0.0036
2019-11-08 2019-09-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 3,656 -64 -1.72 1,013 -12.97 0.0028
2019-08-13 2019-06-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 3,720 -1,719 -31.61 1,164 -47.87 0.0032
2019-05-08 2019-03-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 5,439 13 0.24 2,233 10.11 0.0064
2019-02-13 2018-12-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 5,426 -617 -10.21 2,028 -16.92 0.0065
2018-10-31 2018-09-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 6,043 66 1.10 2,441 18.38 0.0071
2018-08-08 2018-06-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 5,977 -320 -5.08 2,062 -4.93 0.0063
2018-05-08 2018-03-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 6,297 133 2.16 2,169 -6.39 0.0067
2018-02-02 2017-12-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 6,164 599 10.76 2,317 -6.87 0.0071
2017-11-13 2017-09-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 5,565 420 8.16 2,488 -1.50 0.0080
2017-07-19 2017-06-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 5,145 862 20.13 2,526 52.26 0.0084
2017-05-03 2017-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 4,283 -152 -3.43 1,659 1.90 0.0057
2017-02-08 2016-12-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 4,435 231 5.49 1,628 -3.67 0.0059
2016-11-04 2016-09-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 4,204 -203 -4.61 1,690 9.81 0.0063
2016-08-10 2016-06-30 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 4,407 431 10.84 1,539 7.47 0.0059
2016-05-13 2016-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 3,976 1 0.03 1,432 -33.64 0.0056
2016-02-10 2015-12-31 13F REGENRON PHARMACEUTICALS COMMON STOCK 75886F107 3,975 340 9.35 2,158 27.62 0.0087
2015-11-16 2015-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 3,635 429 13.38 1,691 3.36 0.0071
2015-08-10 2015-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 3,206 -1,713 -34.82 1,636 -26.34 0.0063
2015-05-08 2015-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 4,919 1,346 37.67 2,221 51.50 0.0085
2015-02-13 2014-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 3,573 45 1.28 1,466 15.25 0.0057
2014-11-14 2014-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 3,528 32 0.92 1,272 28.88 0.0052
2014-08-14 2014-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 3,496 230 7.04 987 0.71 0.0039
2014-05-14 2014-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 3,266 991 43.56 980 56.55 0.0040
2014-02-13 2013-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 2,275 722 46.49 626 29.07 0.0025
2013-11-07 2013-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 1,553 747 92.68 485 167.96 0.0021
2013-08-09 2013-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 806 806 181 0.0008
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.