Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionNeuberger Berman Group LLC
Latest Disclosed Ownership427,129 shares
Latest Disclosed Value $ 330,067,844
Neuberger Berman Group LLC reports 1.18% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 14, 2026 - Neuberger Berman Group LLC filed a 13F-HR form disclosing ownership of 427,129 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $330,067,844 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 422,127 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 1.18% 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)
2026-05-14 2026-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 427,129 5,002 1.18 330,068 1.30 0.1284
2026-02-13 2025-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 422,127 6,413 1.54 325,827 39.40 0.2425
2025-11-12 2025-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 415,714 10,520 2.60 233,743 9.88 0.1708
2025-08-25 2025-06-30 13F/A-1 REGENERON PHARMACEUTICALS Common 75886F107 405,194 -31,314 -7.17 212,727 -23.16 0.1637
2025-08-13 2025-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 405,194 -31,314 212,727 0.0847
2025-05-13 2025-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 436,508 -26,021 -5.63 276,846 -15.97 0.2319
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 462,529 12,939 2.88 329,474 -30.29 0.2616
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 449,590 -6,210 -1.36 472,627 -1.34 0.3688
2024-11-14 2024-06-30 13F/A-1 REGENERON PHARMACEUTICALS Common 75886F107 455,800 4,116 0.91 479,060 10.19 0.3932
2024-08-13 2024-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 455,800 4,116 479,060 0.3932
2024-11-14 2024-03-31 13F/A-1 REGENERON PHARMACEUTICALS Common 75886F107 451,684 -14,205 -3.05 434,742 6.24 0.3593
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 451,684 -14,205 434,742 0.3593
2024-11-14 2023-12-31 13F/A-2 REGENERON PHARMACEUTICALS Common 75886F107 465,889 -241,922 -34.18 409,222 -29.76 0.3568
2024-02-09 2023-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 465,889 -241,922 409,222 0.3568
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 707,811 -852 -0.12 582,620 14.44 0.5309
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 708,663 19,784 2.87 509,122 -10.04 0.4552
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 688,879 39,229 6.04 565,952 20.75 0.5248
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 649,650 58,411 9.88 468,716 15.08 0.4595
2022-11-15 2022-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 591,239 -50,160 -7.82 407,292 7.42 0.4253
2022-08-15 2022-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 641,399 44,875 7.52 379,152 -8.99 0.3810
2022-05-23 2022-03-31 13F/A-1 REGENERON PHARMACEUTICALS Common 75886F107 596,524 -3,308 -0.55 416,627 10.22 0.3530
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 596,524 -3,308 415,451 0.1853
2022-02-11 2021-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 599,832 40,234 7.19 377,979 11.73 0.2965
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 559,598 -174,484 -23.77 338,284 -17.41 0.2957
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 734,082 -21,707 -2.87 409,598 14.60 0.3575
2021-05-13 2021-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 755,789 190,230 33.64 357,414 30.85 0.3414
2021-02-10 2020-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 565,559 33,295 6.26 273,158 -8.33 0.2832
2020-11-12 2020-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 532,264 -13,899 -2.54 297,983 -12.48 0.3534
2020-08-13 2020-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 546,163 53,421 10.84 340,491 41.73 0.4233
2020-05-14 2020-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 492,742 174,305 54.74 240,232 100.92 0.3662
2020-02-12 2019-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 318,437 7,441 2.39 119,566 38.60 0.1395
2019-11-13 2019-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 310,996 -3,011 -0.96 86,270 -12.22 0.1054
2019-08-13 2019-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 314,007 -212 -0.07 98,284 -23.83 0.1176
2019-05-13 2019-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 314,219 1,118 0.36 129,025 10.33 0.1581
2019-02-12 2018-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 313,101 -3,217 -1.02 116,943 -8.50 0.1630
2018-11-16 2018-09-30 13F/A-1 REGENERON PHARMACEUTICALS Common 75886F107 316,318 18,246 6.12 127,805 24.29 0.1448
2018-11-13 2018-09-30 13F REGENERON PHARMACEUTICALS Common 75886F107 316,318 18,246 127,805
2018-08-13 2018-06-30 13F REGENERON PHARMACEUTICALS Common 75886F107 298,072 3,261 1.11 102,832 1.29 0.1135
2018-05-08 2018-03-31 13F REGENERON PHARMACEUTICALS Common 75886F107 294,811 6,053 2.10 101,521 -6.49 0.1160
2018-02-14 2017-12-31 13F REGENERON PHARMACEUTICALS Common 75886F107 288,758 -3,120 -1.07 108,562 -16.81 0.1248
2017-11-15 2017-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 291,878 -804 -0.27 130,504 -9.21 0.1633
2017-08-08 2017-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 292,682 -5 -0.00 143,748 26.74 0.1846
2017-05-10 2017-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 292,687 -8,415 -2.79 113,419 2.61 0.1464
2017-02-06 2016-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 301,102 -2,079 -0.69 110,532 -9.31 0.1484
2016-11-02 2016-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 303,181 -2,227 -0.73 121,885 14.28 0.1654
2016-08-05 2016-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 305,408 -222 -0.07 106,658 -3.18 0.1470
2016-05-06 2016-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 305,630 -4,865 -1.57 110,161 -34.65 0.1514
2016-01-28 2015-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 310,495 -4,099 -1.30 168,558 15.19 0.2207
2015-11-10 2015-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 314,594 -17,767 -5.35 146,330 -13.69 0.1885
2015-07-31 2015-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 332,361 -14,912 -4.29 169,547 8.14 0.1885
2015-05-06 2015-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 347,273 347,273 0.00 156,787 0.1674
2015-02-05 2014-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 0 -393,610 -100.00 0 -100.00
2014-11-04 2014-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 393,610 -32,683 -7.67 141,903 17.84 0.1456
2014-08-05 2014-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 426,293 -16,908 -3.81 120,415 -9.52 0.1176
2014-05-05 2014-03-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 443,201 -13,124 -2.88 133,084 5.96 0.1354
2014-02-11 2013-12-31 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 456,325 2,770 0.61 125,599 -11.49 0.1291
2013-10-29 2013-09-30 13F/A-1 REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 453,555 -12,445 -2.67 141,904 35.41 0.1576
2013-10-29 2013-09-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 686,942 80,111
2013-08-13 2013-06-30 13F REGENERON PHARMACEUTICALS COMMON STOCK 75886F107 466,000 466,000 104,794 0.1246
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.