Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionCIBC Asset Management Inc
Latest Disclosed Ownership42,517 shares
Latest Disclosed Value $ 32,850,335
CIBC Asset Management Inc reports 0.35% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 12, 2026 - CIBC Asset Management Inc filed a 13F-HR form disclosing ownership of 42,517 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $32,850,335 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 42,667 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -0.35% 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)
2026-05-12 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 42,517 -150 -0.35 32,850 -0.25 0.0803
2026-02-10 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 42,667 10,329 31.94 32,933 81.13 0.0795
2025-10-31 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 32,338 -585 -1.78 18,183 5.20 0.0526
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 32,923 -1,573 -4.56 17,285 -21.00 0.0535
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 34,496 110 0.32 21,878 -10.68 0.0726
2025-01-31 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 34,386 1,034 3.10 24,494 -30.14 0.0803
2024-11-06 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 33,352 1,843 5.85 35,061 5.87 0.1137
2024-08-01 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 31,509 4 0.01 33,117 9.21 0.1178
2024-05-09 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 31,505 1,692 5.68 30,323 15.81 0.1052
2024-02-13 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 29,813 142 0.48 26,184 7.23 0.0978
2023-10-30 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 29,671 2,809 10.46 24,418 26.51 0.1012
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 26,862 -148 -0.55 19,301 -13.03 0.0740
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 27,010 336 1.26 22,193 15.32 0.0880
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 26,674 -11 -0.04 19,245 4.69 0.0808
2022-11-03 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 26,685 1,611 6.42 18,382 24.02 0.0807
2022-08-09 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 25,074 -256 -1.01 14,822 -16.22 0.0601
2022-05-06 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 25,330 -747 -2.86 17,691 7.43 0.0621
2022-02-08 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 26,077 2,046 8.51 16,468 13.24 0.0603
2021-11-09 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 24,031 156 0.65 14,543 9.06 0.0586
2021-08-16 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 23,875 1,292 5.72 13,335 24.80 0.0539
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 22,583 3,049 15.61 10,685 13.22 0.0454
2021-02-03 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 19,534 1,277 6.99 9,437 -7.66 0.0444
2020-11-05 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,257 2,892 18.82 10,220 6.66 0.0521
2020-07-28 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 15,365 1,054 7.36 9,582 37.12 0.0562
2020-04-30 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,311 24 0.17 6,988 30.28 0.0494
2020-02-14 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,287 737 5.44 5,364 42.70 0.0303
2019-10-30 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,550 -164 -1.20 3,759 -12.42 0.0221
2019-08-05 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,714 369 2.77 4,292 -21.68 0.0257
2019-05-06 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 13,345 -83 -0.62 5,480 9.27 0.0340
2019-02-12 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 13,428 272 2.07 5,015 -5.66 0.0369
2018-11-02 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,156 266 2.06 5,316 19.54 0.0329
2018-08-09 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,890 605 4.92 4,447 5.13 0.0278
2018-04-30 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,285 -33 -0.27 4,230 -8.66 0.0275
2018-02-02 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,318 634 5.43 4,631 -11.35 0.0283
2017-11-06 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,684 264 2.31 5,224 -6.86 0.0327
2017-07-27 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,420 422 3.84 5,609 31.60 0.0387
2017-05-12 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,998 293 2.74 4,262 8.45 0.0293
2017-02-08 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,705 -78 -0.72 3,930 -9.34 0.0283
2016-10-19 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 10,783 -605 -5.31 4,335 9.00 0.0319
2016-08-02 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,388 175 1.56 3,977 -1.61 0.0299
2016-05-09 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 11,213 302 2.77 4,042 -31.76 0.0303
2016-02-02 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,911 -394 -3.49 5,923 12.65 0.0488
2015-11-03 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,305 122 1.09 5,258 -7.84 0.0420
2015-08-06 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 11,183 276 2.53 5,705 15.86 0.0397
2015-05-08 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,907 568 5.49 4,924 16.08 0.0349
2015-02-10 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 10,339 -2,352 -18.53 4,242 -7.28 0.0283
2014-11-05 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,691 -207 -1.60 4,575 25.58 0.0273
2014-08-01 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,898 -414 -3.11 3,643 -8.86 0.0206
2014-05-09 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 13,312 547 4.29 3,997 13.78 0.0236
2014-02-04 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 12,765 81 0.64 3,513 -11.47 0.0215
2013-10-29 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,684 107 0.85 3,968 40.31 0.0253
2013-10-02 2013-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 12,577 12,577 2,828 0.0193
2013-08-09 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 12,577 2,828 0.0193
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.