Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionEnsign Peak Advisors, Inc
Latest Disclosed Ownership19,052 shares
Latest Disclosed Value $ 14,720,337
Ensign Peak Advisors, Inc reports 28.30% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 13, 2026 - Ensign Peak Advisors, Inc filed a 13F-HR form disclosing ownership of 19,052 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $14,720,337 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 14,849 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 28.30% 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)
2026-05-13 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 19,052 4,203 28.30 14,720 28.44 0.0274
2026-02-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,849 -16,314 -52.35 11,461 -34.59 0.0202
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 31,163 6,385 25.77 17,522 34.70 0.0287
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 24,778 -18,898 -43.27 13,008 -53.04 0.0223
2025-05-14 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 43,676 2,027 4.87 27,701 -6.63 0.0530
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 41,649 -1,093 -2.56 29,668 -33.97 0.0527
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 42,742 -85,969 -66.79 44,932 -66.79 0.0790
2024-08-13 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 128,711 -4,471 -3.36 135,279 5.53 0.2472
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 133,182 -5,964 -4.29 128,186 4.89 0.2341
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 139,146 11,490 9.00 122,211 16.33 0.2419
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 127,656 3,003 2.41 105,056 17.29 0.2243
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 124,653 76,094 156.70 89,568 124.49 0.1816
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 48,559 -2,298 -4.52 39,899 8.74 0.0863
2023-02-13 2022-12-31 13F Regeneron Pharmaceuticals COM 75886F107 50,857 228 0.45 36,693 5.20 0.0826
2022-11-14 2022-09-30 13F Regeneron Pharmaceuticals COM 75886F107 50,629 -9,475 -15.76 34,877 -1.84 0.0866
2022-08-12 2022-06-30 13F Regeneron Pharmaceuticals COM 75886F107 60,104 14,405 31.52 35,529 11.32 0.0844
2022-05-16 2022-03-31 13F Regeneron Pharmaceuticals COM 75886F107 45,699 -10,524 -18.72 31,917 -10.11 0.0649
2022-02-11 2021-12-31 13F Regeneron Pharmaceuticals COM 75886F107 56,223 -33,665 -37.45 35,507 -34.73 0.0679
2021-11-12 2021-09-30 13F Regeneron Pharmaceuticals COM 75886F107 89,888 -8,190 -8.35 54,399 -0.70 0.1134
2021-08-13 2021-06-30 13F Regeneron Pharmaceuticals COM 75886F107 98,078 -4,258 -4.16 54,780 13.14 0.1105
2021-05-12 2021-03-31 13F Regeneron Pharmaceuticals COM 75886F107 102,336 -35,203 -25.59 48,419 -27.13 0.1041
2021-02-12 2020-12-31 13F Regeneron Pharmaceuticals COM 75886F107 137,539 -13,692 -9.05 66,447 -21.51 0.1507
2020-11-12 2020-09-30 13F Regeneron Pharmaceuticals COM 75886F107 151,231 -4,366 -2.81 84,656 -12.76 0.2139
2020-08-12 2020-06-30 13F Regeneron Pharmaceuticals COM 75886F107 155,597 70,382 82.59 97,037 133.20 0.2637
2020-05-11 2020-03-31 13F Regeneron Pharmaceuticals COM 75886F107 85,215 42,684 100.36 41,611 160.56 0.1393
2020-02-14 2019-12-31 13F Regeneron Pharmaceuticals COM 75886F107 42,531 42,531 15,970 0.0422
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.