Regeneron Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US75886F1075

SecurityREGN / Regeneron Pharmaceuticals, Inc.
InstitutionPitcairn Co
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Pitcairn Co closes position in REGN / Regeneron Pharmaceuticals, Inc.

On February 12, 2026 - Pitcairn Co filed a 13F-HR form disclosing ownership of 0 shares of Regeneron Pharmaceuticals, Inc. (US:REGN) valued at $0 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 12, 2025 disclosing 968 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

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)
2026-02-12 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -968 -100.00 0 -100.00
2025-11-12 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 968 491 102.94 544 117.60 0.0430
2025-08-19 2025-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 477 -207 -30.26 250 -42.26 0.0164
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 35,293 34,609 2,312 0.1356
2025-05-09 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 684 -206 -23.15 434 -31.60 0.0262
2025-02-12 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 890 -72 -7.48 634 -37.39 0.0374
2024-11-12 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 962 44 4.79 1,011 4.88 0.0598
2024-08-13 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 918 80 9.55 965 19.60 0.0589
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 838 51 6.48 807 16.64 0.0523
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 787 -5 -0.63 691 6.14 0.0530
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 792 64 8.79 652 24.47 0.0556
2023-08-11 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 728 -13 -1.75 523 -13.98 0.0453
2023-05-05 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 741 22 3.06 609 17.37 0.0560
2023-02-13 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 719 30 4.35 519 9.05 0.0517
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 689 31 4.71 475 22.11 0.0514
2022-08-12 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 658 31 4.94 389 -11.19 0.0411
2022-05-12 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 627 15 2.45 438 13.47 0.0382
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 612 -3 -0.49 386 3.49 0.0248
2021-11-10 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 615 -10 -1.60 373 6.88 0.0258
2021-08-11 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 625 6 0.97 349 19.11 0.0234
2021-05-10 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 619 14 2.31 293 0.34 0.0208
2021-02-05 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 605 -10 -1.63 292 -15.12 0.0223
2020-11-03 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 615 -57 -8.48 344 -17.90 0.0292
2020-07-28 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 672 31 4.84 419 33.87 0.0403
2020-05-13 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 641 -65 -9.21 313 18.11 0.0371
2020-02-12 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 706 706 265 0.0245
2019-11-12 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 0 -873 -100.00 0 -100.00
2019-08-12 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 873 -760 -46.54 274 -59.10 0.0274
2019-05-07 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,633 120 7.93 670 18.58 0.0728
2019-02-12 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,513 2 0.13 565 -7.38 0.0626
2018-11-02 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,511 -74 -4.67 610 11.72 0.0633
2018-08-02 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,585 -40 -2.46 546 -2.33 0.0580
2018-05-11 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,625 -119 -6.82 559 -14.66 0.0593
2018-02-13 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,744 -67 -3.70 655 -19.14 0.0654
2017-11-03 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,811 -155 -7.88 810 -16.15 0.0917
2017-08-02 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,966 -126 -6.02 966 19.11 0.1160
2017-05-08 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,092 112 5.66 811 11.55 0.0982
2017-02-06 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 1,980 -219 -9.96 727 -17.76 0.0899
2016-11-09 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,199 -60 -2.66 884 12.04 0.1100
2016-07-25 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,259 -14 -0.62 789 -3.66 0.1012
2016-04-29 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,273 -160 -6.58 819 -38.00 0.1034
2016-02-10 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,433 -235 -8.81 1,321 6.45 0.1468
2015-11-02 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,668 185 7.45 1,241 -2.05 0.1646
2015-08-06 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,483 -296 -10.65 1,267 0.96 0.1464
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,779 -468 -14.41 1,255 -5.78 0.1386
2015-02-10 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,247 24 0.74 1,332 14.53 0.1434
2014-11-12 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,223 86 2.74 1,163 31.26 0.1302
2014-07-29 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,137 391 14.24 886 7.39 0.0981
2014-05-13 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,746 -192 -6.54 825 2.10 0.0922
2014-05-13 2013-12-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 2,938 -359 -10.89 808 -21.71 0.0893
2014-02-12 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,139 589
2013-11-05 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,297 135 4.27 1,032 45.15 0.1265
2013-08-14 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,162 3,162 711 0.0951
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.