Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionColdstream Capital Management Inc
Latest Disclosed Ownership1,874 shares
Latest Disclosed Value $ 1,448,215
Coldstream Capital Management Inc reports 1.46% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 8, 2026 - Coldstream Capital Management Inc filed a 13F-HR form disclosing ownership of 1,874 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $1,448,215 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 1,847 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 1.46% 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)
2026-05-08 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,874 27 1.46 1,448 1.61 0.0155
2026-02-09 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,847 -180 -8.88 1,426 25.11 0.0184
2025-11-19 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,027 933 85.28 1,140 98.43 0.0153
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,094 -244 -18.24 574 -32.31 0.0094
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,338 27 2.06 849 -9.21 0.0181
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,311 2 0.15 934 -31.22 0.0199
2024-11-18 2024-09-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 1,309 60 4.80 1,359 3.51 0.0294
2024-11-18 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,309 1,359
2024-08-07 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,249 65 5.49 1,313 15.19 0.0320
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,184 1 0.08 1,140 9.62 0.0289
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,183 4 0.34 1,039 7.11 0.0291
2023-11-02 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,179 8 0.68 970 15.34 0.0317
2023-08-03 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,171 -33 -2.74 841 -14.96 0.0267
2023-05-15 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,204 36 3.08 989 17.46 0.0332
2023-01-10 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,168 223 23.60 843 50.63 0.0309
2022-08-08 2022-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 945 -3 -0.32 559 -15.56 0.0218
2022-08-08 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 560 -388 331 0.0141
2022-05-11 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 948 61 6.88 662 18.21 0.0228
2022-02-11 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 887 475 115.29 560 142.42 0.0176
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 412 -87 -17.43 231 -17.20 0.0112
2021-08-16 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 499 499 279 0.0112
2021-06-16 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -460 -100.00 0 -100.00
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 460 460 222 0.0134
2020-11-16 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -341 -100.00 0 -100.00
2020-08-12 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 341 341 213 0.0191
2016-02-04 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -540 -100.00 0 -100.00
2015-11-09 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 540 -5 -0.92 251 -9.71 0.0671
2015-07-31 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 545 545 0.93 278 10.76 0.0727
2015-05-11 2015-03-31 13F Regeneron Pharmaceuticals COM 75886F107 0 -545 -100.00 0 -100.00
2015-02-11 2014-12-31 13F Regeneron Pharmaceuticals COM 75886F107 545 545 224 0.0623
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.