Regeneron Pharmaceuticals, Inc.
IT ˙ ETLX ˙ US75886F1075
DETTE SYMBOL ER IKKE LÆNGERE AKTIVT
SecurityIT:4REGN / Regeneron Pharmaceuticals, Inc.
InstitutionCatalyst Capital Advisors LLC
Latest Disclosed Ownership40 shares
Latest Disclosed Value $ 30,906
Catalyst Capital Advisors LLC ownership in 4REGN / Regeneron Pharmaceuticals, Inc.

On May 6, 2026 - Catalyst Capital Advisors LLC filed a 13F-HR form disclosing ownership of 40 shares of Regeneron Pharmaceuticals, Inc. (IT:4REGN) valued at $30,906 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 40 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 0.00% 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)
2026-05-06 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 40 0 0.00 31 0.00 0.0006
2026-02-10 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 40 -13 -24.53 31 3.45 0.0006
2025-11-12 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 53 -12 -18.46 30 -14.71 0.0006
2025-07-31 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 65 -20 -23.53 34 -35.85 0.0007
2025-04-29 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 85 1 1.19 54 -10.17 0.0011
2025-01-31 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 84 0 0.00 60 -32.95 0.0013
2024-10-30 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 84 -20 -19.23 88 -19.27 0.0020
2024-07-25 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 104 3 2.97 109 12.37 0.0025
2024-04-24 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 101 1 1.00 97 11.49 0.0023
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 100 20 25.00 88 33.85 0.0024
2023-11-09 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 80 21 35.59 66 54.76 0.0018
2023-08-08 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 59 1 1.72 42 -10.64 0.0012
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 58 -26 -30.95 48 -21.67 0.0015
2023-02-13 2022-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 84 -1 -1.18 61 1.69 0.0020
2023-02-07 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 84 -1 0 0.0019
2022-11-08 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 85 0 0.00 59 18.00 0.0022
2022-08-09 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 85 12 16.44 50 -1.96 0.0021
2022-05-10 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 73 15 25.86 51 37.84 0.0021
2022-05-10 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 142 99
2022-02-10 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 58 -31 -34.83 37 -31.48 0.0017
2021-11-09 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 89 24 36.92 54 50.00 0.0027
2021-08-06 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 65 3 4.84 36 24.14 0.0018
2021-05-10 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 62 -12 -16.22 29 -19.44 0.0016
2021-02-05 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 74 74 36 0.0020
2019-08-08 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -100 -100.00 0 -100.00
2019-05-08 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 100 100 41 0.0014
2016-08-10 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -10,300 -100.00 0 -100.00
2016-05-11 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,300 0 0.00 3,712 -33.62 0.6248
2016-02-10 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,300 4,500 77.59 5,592 107.26 0.8102
2015-11-12 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 5,800 -9,200 -61.33 2,698 -64.74 0.3621
2015-08-12 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 15,000 15,000 7,652 0.8928
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.