Regeneron Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US75886F1075

SecurityREGN / Regeneron Pharmaceuticals, Inc.
InstitutionChange Path, LLC
Latest Disclosed Ownership659 shares
Latest Disclosed Value $ 509,220
Change Path, LLC reports 15.73% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 15, 2026 - Change Path, LLC filed a 13F-HR form disclosing ownership of 659 shares of Regeneron Pharmaceuticals, Inc. (US:REGN) valued at $509,170 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 782 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -15.73% during the quarter. The current value of the position is $407,888 USD.

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)
2026-05-15 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 659 -123 -15.73 509 -15.59 0.0109
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 782 119 17.95 604 62.10 0.0146
2025-11-13 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 663 -113 -14.56 373 -8.60 0.0091
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 776 256 49.23 407 23.71 0.0107
2025-05-14 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 520 74 16.59 330 3.79 0.0099
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 446 446 318 0.0097
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -208 -100.00 0 0.0000
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 208 208 0 0.0080
2023-08-16 2023-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 0 -321 -100.00 0 0.0000
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -321 0 0.0000
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 321 -7 -2.13 0 -100.00 0.0130
2023-02-15 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 328 37 12.71 237 18.50 0.0131
2022-11-15 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 291 291 200 0.0120
2022-08-11 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -357 -100.00 0 -100.00
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 357 357 249 0.0129
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.