Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionSignaturefd, Llc
Latest Disclosed Ownership1,995 shares
Latest Disclosed Value $ 1,541,479
Signaturefd, Llc reports 10.34% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 1,995 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $1,541,479 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 1,808 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 10.34% 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)
2026-04-07 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,995 187 10.34 1,541 10.47 0.0236
2026-01-20 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,808 148 8.92 1,396 49.52 0.0213
2025-10-21 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,660 -98 -5.57 933 1.19 0.0147
2025-07-16 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,758 -383 -17.89 923 -32.06 0.0157
2025-05-02 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,141 113 5.57 1,358 -6.02 0.0257
2025-02-10 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,028 -337 -14.25 1,445 -41.89 0.0274
2024-10-21 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,365 23 0.98 2,486 0.98 0.0473
2024-07-29 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,342 92 4.09 2,462 13.67 0.0500
2024-05-03 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,250 124 5.83 2,165 15.96 0.0457
2024-02-01 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,126 54 2.61 1,867 9.50 0.0431
2023-11-03 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,072 156 8.14 1,705 23.91 0.0444
2023-08-01 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,916 -71 -3.57 1,377 -15.69 0.0352
2023-04-28 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,987 125 6.71 1,633 21.52 0.0446
2023-01-30 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,862 93 5.26 1,343 10.17 0.0393
2022-11-08 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,769 248 16.31 1,219 35.60 0.0417
2022-08-10 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,521 -163 -9.68 899 -23.55 0.0306
2022-05-02 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,684 149 9.71 1,176 21.36 0.0354
2022-01-25 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,535 214 16.20 969 21.28 0.0298
2021-10-28 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,321 152 13.00 799 22.36 0.0276
2021-07-26 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,169 437 59.70 653 88.73 0.0260
2021-04-30 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 732 -177 -19.47 346 -21.18 0.0153
2021-02-11 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 909 46 5.33 439 -9.11 0.0207
2020-11-03 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 863 46 5.63 483 -5.29 0.0259
2020-07-30 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 817 246 43.08 510 82.80 0.0308
2020-04-23 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 571 282 97.58 279 155.96 0.0241
2020-02-05 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 289 85 41.67 109 91.23 0.0080
2019-10-16 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 204 -80 -28.17 57 -35.96 0.0047
2019-07-31 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 284 -201 -41.44 89 -55.28 0.0077
2019-05-09 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 485 -531 -52.26 199 -47.49 0.0169
2019-02-13 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,016 131 14.80 379 5.87 0.0353
2018-11-14 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 885 527 147.21 358 188.71 0.0364
2018-08-14 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 358 198 123.75 124 125.45 0.0138
2018-05-08 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 160 160 55 0.0065
2017-02-14 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -77 -100.00 0 -100.00
2016-11-14 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 77 5 6.94 31 24.00 0.0045
2016-07-29 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 72 6 9.09 25 4.17 0.0037
2016-05-12 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 66 15 29.41 24 -14.29 0.0041
2016-01-22 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 51 21 70.00 28 100.00 0.0054
2015-10-23 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 30 26 650.00 14 600.00 0.0032
2015-07-15 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 4 4 2 0.0004
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.