Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionManchester Capital Management LLC
Latest Disclosed Ownership46 shares
Latest Disclosed Value $ 35,542
Manchester Capital Management LLC reports 6.98% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 11, 2026 - Manchester Capital Management LLC filed a 13F-HR form disclosing ownership of 46 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $35,542 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 43 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 6.98% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-11 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 46 3 6.98 36 6.06 0.0051
2026-02-11 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 43 -225 -83.96 33 -78.00 0.0045
2026-02-11 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 43 33
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 268 -16 -5.63 151 0.67 0.0204
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 284 61 27.35 149 5.67 0.0196
2025-05-09 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 223 62 38.51 141 23.68 0.0174
2025-01-30 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 161 18 12.59 115 -24.00 0.0133
2024-11-05 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 143 0 0.00 150 0.00 0.0176
2024-08-08 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 143 69 93.24 150 111.27 0.0180
2024-05-06 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 74 9 13.85 71 24.56 0.0087
2024-02-08 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 65 10 18.18 57 26.67 0.0077
2023-11-09 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 55 0 0.00 45 15.38 0.0067
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 55 13 30.95 40 14.71 0.0053
2023-05-09 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 42 37 740.00 35 1,033.33 0.0045
2023-02-09 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 5 5 4 0.0005
2021-05-13 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -3 -100.00 0 -100.00
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3 3 1 0.0002
2015-05-07 2015-03-31 13F REGENERON PHARMACEUTICALS Equities 75886F107 0 -35 -100.00 0 -100.00
2015-02-13 2014-12-31 13F REGENERON PHARMACEUTICALS Equities 75886F107 35 14 66.67 14 75.00 0.0017
2014-11-03 2014-09-30 13F Regeneron Pharm Equities 75886F107 21 0 0.00 8 33.33 0.0011
2014-07-31 2014-06-30 13F Regeneron Pharm Equities 75886F107 21 0 0.00 6 0.00 0.0008
2014-05-02 2014-03-31 13F Regeneron Pharm Equities 75886F107 21 -11 -34.38 6 -33.33 0.0010
2014-02-10 2013-12-31 13F Regeneron Pharm Equities 75886F107 32 -400 -92.59 9 -93.33 0.0014
2013-11-12 2013-09-30 13F Regeneron Pharm Equities 75886F107 432 -339 -43.97 135 -21.97 0.0232
2013-08-14 2013-06-30 13F Regeneron Pharm Equities 75886F107 771 771 173 0.0322
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.