Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionCapital International Sarl
Latest Disclosed Ownership24,602 shares
Latest Disclosed Value $ 19,008,489
Capital International Sarl reports 5.72% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 13, 2026 - Capital International Sarl filed a 13F-HR form disclosing ownership of 24,602 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $19,008,489 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 23,271 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 5.72% 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 24,602 1,331 5.72 19,008 5.82 0.3112
2026-02-11 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 23,271 -23,521 -50.27 17,962 -31.73 0.2884
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 46,792 -7,027 -13.06 26,310 -6.88 0.4546
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 53,819 -16,315 -23.26 28,255 -36.48 0.5428
2025-05-12 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 70,134 5,099 7.84 44,481 -3.98 1.0072
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 65,035 10,846 20.02 46,326 -18.68 1.0692
2024-11-13 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 54,189 7,053 14.96 56,966 14.99 1.4636
2024-08-13 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 47,136 6,718 16.62 49,541 27.35 1.5126
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 40,418 9,279 29.80 38,902 42.24 1.2897
2024-02-13 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 31,139 3,071 10.94 27,349 18.40 1.0244
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 28,068 -2,716 -8.82 23,099 4.43 1.0569
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 30,784 3,148 11.39 22,120 -2.59 0.9925
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 27,636 2,969 12.04 22,708 27.60 1.1464
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 24,667 2,815 12.88 17,797 18.22 1.2527
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 21,852 2,218 11.30 15,053 29.70 1.2156
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 19,634 1,601 8.88 11,606 -7.85 0.9303
2022-05-19 2022-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 18,033 5,819 47.64 12,595 63.30 0.6246
2022-05-16 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,033 5,819 12,595 0.6325
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,214 9,748 395.30 7,713 416.96 0.3679
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,466 -137 -5.26 1,492 2.61 0.1319
2021-08-16 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,603 -5 -0.19 1,454 17.83 0.1256
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,608 53 2.07 1,234 0.00 0.1177
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,555 292 12.90 1,234 -2.60 0.1289
2020-11-16 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,263 106 4.91 1,267 -5.80 0.1555
2020-08-14 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,157 611 39.52 1,345 78.15 0.1789
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 1,546 1,546 755 0.1374
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.