Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionKing Luther Capital Management Corp
Latest Disclosed Ownership948 shares
Latest Disclosed Value $ 732,463
King Luther Capital Management Corp ownership in REGN / Regeneron Pharmaceuticals, Inc.

On May 8, 2026 - King Luther Capital Management Corp filed a 13F-HR form disclosing ownership of 948 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $732,463 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 948 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 0.00% 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 948 0 0.00 732 0.14 0.0032
2026-02-09 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 948 45 4.98 732 44.18 0.0030
2025-11-07 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 903 74 8.93 508 16.55 0.0021
2025-08-07 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 829 1 0.12 435 -17.14 0.0019
2025-05-12 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 828 0 0.00 525 -10.87 0.0024
2025-02-07 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 828 -14 -1.66 590 -33.45 0.0026
2024-11-08 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 842 11 1.32 885 1.37 0.0038
2024-08-12 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 831 3 0.36 873 9.67 0.0039
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 828 0 0.00 797 9.49 0.0036
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 828 0 0.00 727 6.75 0.0035
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 828 0 0.00 681 14.65 0.0035
2023-08-10 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 828 -28 -3.27 595 -15.50 0.0030
2023-05-11 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 856 -274 -24.25 703 -13.74 0.0037
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,130 -73 -6.07 815 -1.69 0.0045
2022-11-10 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,203 -611 -33.68 829 -22.67 0.0049
2022-08-11 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,814 160 9.67 1,072 -7.19 0.0060
2022-05-11 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,654 0 0.00 1,155 10.53 0.0056
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,654 -210 -11.27 1,045 -7.36 0.0047
2021-11-10 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,864 0 0.00 1,128 8.36 0.0055
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,864 1,436 335.51 1,041 412.81 0.0051
2021-05-12 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 428 0 0.00 203 -1.93 0.0011
2021-02-10 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 428 -102 -19.25 207 -30.30 0.0012
2020-11-12 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 530 32 6.43 297 -4.50 0.0019
2020-08-12 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 498 498 311 0.0022
2018-05-08 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -825 -100.00 0 -100.00
2018-02-12 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 825 0 0.00 310 -15.99 0.0025
2017-11-13 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 825 145 21.32 369 10.48 0.0032
2017-08-10 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 680 -50 -6.85 334 18.02 0.0030
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 730 -295 -28.78 283 -24.73 0.0026
2017-02-10 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,025 -375 -26.79 376 -33.21 0.0036
2016-11-10 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,400 -70 -4.76 563 9.75 0.0055
2016-08-11 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,470 140 10.53 513 7.10 0.0050
2016-05-12 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,330 350 35.71 479 -9.96 0.0048
2016-02-12 2015-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 980 -220 -18.33 532 -4.66 0.0050
2016-02-11 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 980 -220 532 0.0050
2015-11-13 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,200 -160 -11.76 558 -19.60 0.0054
2015-08-11 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,360 25 1.87 694 15.09 0.0060
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,335 -110 -7.61 603 1.69 0.0051
2015-02-11 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,445 0 0.00 593 13.82 0.0048
2014-11-12 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,445 275 23.50 521 57.88 0.0043
2014-08-13 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,170 270 30.00 330 22.22 0.0026
2014-05-14 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 900 900 270 0.0022
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.