Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionGreenwich Wealth Management LLC
Latest Disclosed Ownership16,102 shares
Latest Disclosed Value $ 12,441
Greenwich Wealth Management LLC reports 0.12% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 12, 2026 - Greenwich Wealth Management LLC filed a 13F-HR form disclosing ownership of 16,102 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $12,441 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 16,121 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -0.12% 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)
2026-05-12 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,102 -19 -0.12 12 0.00 0.5079
2026-02-10 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,121 -40 -0.25 12 33.33 0.5551
2025-11-12 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,161 7 0.04 9 12.50 0.4521
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,154 14 0.09 8 -20.00 0.4116
2025-05-12 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,140 59 0.37 10 -9.09 0.7746
2025-02-10 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,081 14 0.09 11 -31.25 0.8076
2024-10-29 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,067 -12 -0.07 17 0.00 1.1490
2024-08-09 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,079 -1 -0.01 17 6.67 1.2343
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,080 5 0.03 15 7.14 1.2327
2024-02-01 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,075 -20 -0.12 14 7.69 1.3944
2023-11-07 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,095 24 0.15 13 18.18 1.3996
2023-07-31 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,071 -34 -0.21 12 -15.38 1.2134
2023-04-24 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,105 -7 -0.04 13 18.18 1.4436
2023-02-06 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,112 -39 -0.24 12 -99.90 1.2789
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,151 12 0.07 11,126 16.62 1.1861
2022-08-08 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,139 -25 -0.15 9,540 -15.50 1.2638
2022-05-11 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,164 0 0.00 11,290 10.60 1.1528
2022-01-28 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,164 -13 -0.08 10,208 4.27 0.8341
2021-10-19 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,177 -61 -0.38 9,790 7.94 0.8149
2021-07-27 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,238 59 0.36 9,070 18.48 0.7740
2021-05-06 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,179 50 0.31 7,655 -1.76 0.6113
2021-02-12 2020-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 16,129 62 0.39 7,792 -13.36 0.6791
2021-02-11 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,067 0 8,994 1,608,438.1304
2020-10-29 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,067 2 0.01 8,994 -10.23 1.6098
2020-08-11 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 16,065 -100 -0.62 10,019 26.94 1.9150
2020-05-12 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,165 16,165 7,893 1.6862
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.