Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionAPG Asset Management N.V.
Latest Disclosed Ownership63,436 shares
Latest Disclosed Value $ 42,538,788
APG Asset Management N.V. reports 10.73% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 13, 2026 - APG Asset Management N.V. filed a 13F-HR form disclosing ownership of 63,436 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $42,538,788 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 71,064 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -10.73% 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)
2026-05-13 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 63,436 -7,628 -10.73 42,539 -8.92 0.1348
2026-02-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 71,064 -6,387 -8.25 46,705 26.02 0.1326
2025-11-12 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 77,451 -24 -0.03 37,062 6.96 0.1040
2025-08-12 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 77,475 68 0.09 34,650 -23.76 0.1026
2025-05-14 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 77,407 -4,348 -5.32 45,449 -19.19 0.1410
2025-02-13 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 81,755 59,984 275.52 56,240 174.26 0.1566
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 21,771 -105,653 -82.91 20,507 -83.59 0.1361
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 127,424 -16,343 -11.37 124,961 -2.47 0.2229
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 143,767 -2,807 -1.92 128,124 9.94 0.2245
2024-02-13 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 146,574 3,077 2.14 116,539 -1.32 0.2273
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 143,497 -3,207 -2.19 118,092 22.22 0.2415
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 146,704 -6,205 -4.06 96,620 -16.45 0.1949
2023-05-12 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 152,909 -24,551 -13.83 115,643 90,246.09 0.2454
2023-02-14 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 177,460 18,869 11.90 128 -99.89 0.2434
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 158,591 -92,715 -36.89 111,518 -21.52 0.2877
2022-08-12 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 251,306 -123,289 -32.91 142,096 -39.57 0.3330
2022-05-12 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 374,595 -33,029 -8.10 235,137 3.88 0.4443
2022-02-11 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 407,624 -8,200 -1.97 226,365 4.25 0.3846
2021-11-15 2021-09-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 415,824 -8,200 -1.93 217,135 8.73 0.3859
2021-11-15 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 415,824 -8,200 217,135 0.3902
2021-08-13 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 424,024 -877 -0.21 199,709 16.75 0.3392
2021-05-14 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 424,901 -31,568 -6.92 171,052 -5.09 0.2919
2021-02-12 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 456,469 115,711 33.96 180,234 10.80 0.2940
2020-11-12 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 340,758 24,500 7.75 162,665 -7.37 0.2816
2020-08-14 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 316,258 264,471 510.69 175,608 594.46 0.3201
2020-05-19 2020-03-31 13F/A-2 REGENERON PHARMACEUTICALS COM 75886F107 51,787 21,377 70.30 25,287 148.59 0.0496
2020-05-15 2020-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 51,787 0 25,287 0.0501
2020-05-14 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 149,282 118,872 54,592 102,139.5802
2020-02-13 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 30,410 5,950 24.33 10,172 63.43 0.0165
2019-11-08 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 24,460 -124,922 -83.63 6,224 -84.84 0.0103
2019-08-13 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 149,382 100 0.07 41,058 -24.79 0.0704
2019-05-14 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 149,282 130,900 712.11 54,592 808.96 0.1002
2019-02-19 2018-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 18,382 -200 -1.08 6,006 -7.09 0.0122
2019-02-13 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,382 -200 6,006
2018-11-09 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,582 0 0.00 6,464 17.72 0.0113
2018-08-13 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,582 0 0.00 5,491 5.54 0.0101
2018-05-14 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,582 0 0.00 5,203 -10.57 0.0101
2018-02-21 2017-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 18,582 -2,375 -11.33 5,818 -37.91 0.0106
2018-01-24 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,582 -2,375 5,818
2017-10-19 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 20,957 2,100 11.14 9,370 1.18 0.0154
2017-07-21 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,857 -31,690 -62.69 9,261 -52.72 0.0168
2017-05-01 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 50,547 -32,212 -38.92 19,587 -32.00 0.0359
2017-01-30 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 82,759 -13,600 -14.11 28,803 -25.65 0.0542
2016-10-31 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 96,359 -300 -0.31 38,738 14.76 0.0681
2016-08-11 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 96,659 10,600 12.32 33,756 8.82 0.0635
2016-05-16 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 86,059 11,467 15.37 31,019 -23.40 0.0644
2016-02-17 2015-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 74,592 -12,493 -14.35 40,494 -0.03 0.0933
2016-02-16 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,840,488 40,494
2015-11-12 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 87,085 -6,406 -6.85 40,507 -15.07 0.0928
2015-08-12 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 93,491 1,347 1.46 47,693 14.64 0.0957
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 92,144 -5,908 -6.03 41,601 3.42 0.0860
2015-02-09 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 98,052 4,913 5.27 40,226 19.80 0.0771
2014-11-12 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 93,139 -711 -0.76 33,578 26.66 0.0679
2014-08-11 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 93,850 7,358 8.51 26,510 2.07 0.0566
2014-04-30 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 86,492 12,116 16.29 25,972 26.87 0.0679
2014-02-20 2013-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 74,376 -3,684 -4.72 20,471 -16.18 0.0602
2014-02-12 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 74,376 20,471
2013-11-13 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 78,060 -14,078 -15.28 24,423 17.87 0.0772
2013-08-14 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 92,138 92,138 20,720 0.0647
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.