Regeneron Pharmaceuticals, Inc.
US ˙ NasdaqGS ˙ US75886F1075

SecurityREGN / Regeneron Pharmaceuticals, Inc.
InstitutionStrs Ohio
Latest Disclosed Ownership31,656 shares
Latest Disclosed Value $ 24,458,692
Strs Ohio reports 4.06% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On April 24, 2026 - Strs Ohio filed a 13F-HR form disclosing ownership of 31,656 shares of Regeneron Pharmaceuticals, Inc. (US:REGN) valued at $24,458,692 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 32,996 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -4.06% during the quarter. The current value of the position is $19,593,481 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)
2026-04-24 2026-03-31 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 31,656 -1,340 -4.06 24,459 -3.97 0.0970
2026-02-02 2025-12-31 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 32,996 -2,589 -7.28 25,469 27.29 0.0950
2025-10-30 2025-09-30 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 35,585 -865 -2.37 20,008 4.56 0.0733
2025-08-04 2025-06-30 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 36,450 2,069 6.02 19,136 -12.24 0.0714
2025-05-28 2025-03-31 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 34,381 725 2.15 21,805 -9.05 0.0913
2025-05-28 2024-12-31 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 33,656 -3,964 -10.54 23,974 -39.38 0.0951
2024-11-01 2024-09-30 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 37,620 -200 -0.53 39,548 -0.51 0.1522
2024-08-05 2024-06-30 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 37,820 24 0.06 39,750 110,313.89 0.1571
2024-05-13 2024-03-31 13F REGENERON PHARMACEUTICALS COM_STK 75886F107 37,796 3,704 10.86 36 24.14 0.1449
2024-01-30 2023-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 34,092 2,837 9.08 30 16.00 0.1246
2023-10-26 2023-09-30 13F/A-1 REGENERON PHARMACEUTICAL COM 75886F107 31,255 -977 -3.03 26 8.70 0.1145
2023-10-26 2023-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 31,255 -977 26 0.1145
2023-07-31 2023-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 32,232 -1,473 -4.37 23 -14.81 0.0978
2023-08-02 2023-03-31 13F/A-2 REGENERON PHARMACEUTICAL COM 75886F107 33,705 -333 -0.98 28 12.50 0.1200
2023-08-02 2023-03-31 13F/A-1 REGENERON PHARMACEUTICAL COM 75886F107 33,705 -333 28 0.1200
2023-04-27 2023-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 33,705 -333 28 0.1429
2023-01-26 2022-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 34,038 -809 -2.32 25 -99.90 0.1109
2022-10-27 2022-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 34,847 -1,163 -3.23 24,005 12.77 0.1144
2022-07-25 2022-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 36,010 -4,639 -11.41 21,286 -25.02 0.0959
2022-04-21 2022-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 40,649 4,439 12.26 28,390 24.15 0.1039
2022-01-24 2021-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 36,210 -9,194 -20.25 22,867 -16.78 0.0794
2021-10-22 2021-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 45,404 -3,069 -6.33 27,477 1.49 0.1034
2021-07-26 2021-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 48,473 533 1.11 27,074 19.36 0.0974
2021-04-23 2021-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 47,940 -6,894 -12.57 22,682 -14.38 0.0854
2021-01-25 2020-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 54,834 5,003 10.04 26,490 -5.03 0.1022
2020-12-14 2020-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 49,831 -2,525 -4.82 27,894 -14.57 0.1168
2020-07-23 2020-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 52,356 9,434 21.98 32,651 55.79 0.1427
2020-04-23 2020-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 42,922 1,569 3.79 20,958 34.98 0.1103
2020-01-24 2019-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 41,353 -3,082 -6.94 15,527 25.97 0.0650
2019-10-21 2019-09-30 13F/A-1 REGENERON PHARMACEUTICAL COM 75886F107 44,435 -1,546 -3.36 12,326 -14.36 0.0540
2019-10-21 2019-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 44,435 3,082 12,326 54,555.5596
2019-07-25 2019-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 45,981 264 0.58 14,392 -23.33 0.0640
2019-04-19 2019-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 45,717 893 1.99 18,772 12.13 0.0851
2019-01-23 2018-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 44,824 1,110 2.54 16,741 -5.21 0.0850
2018-10-19 2018-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 43,714 -3,486 -7.39 17,662 8.47 0.0775
2018-08-06 2018-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 47,200 -1,332 -2.74 16,283 -2.57 0.0701
2018-04-20 2018-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 48,532 -840 -1.70 16,712 -9.96 0.0739
2018-01-23 2017-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 49,372 -722 -1.44 18,561 -17.13 0.0793
2017-10-23 2017-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 50,094 0 0.00 22,398 -8.96 0.0962
2017-07-26 2017-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 50,094 -1,589 -3.07 24,603 22.85 0.1096
2017-04-26 2017-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 51,683 -8,159 -13.63 20,027 -8.83 0.0868
2017-01-24 2016-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 59,842 13,589 29.38 21,967 18.14 0.0968
2016-10-27 2016-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 46,253 -1,435 -3.01 18,594 11.65 0.0831
2016-07-26 2016-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 47,688 -9,839 -17.10 16,654 -19.68 0.0740
2016-04-25 2016-03-31 13F/A-1 REGENERON PHARMACEUTICAL COM 75886F107 57,527 -9,888 -14.67 20,735 -43.34 0.0931
2016-01-28 2015-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 67,415 106 0.16 36,597 16.89 0.1637
2015-10-21 2015-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 67,309 246 0.37 31,308 -8.48 0.1490
2015-08-04 2015-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 67,063 -130 -0.19 34,210 12.77 0.1502
2015-04-27 2015-03-31 13F/A-1 REGENERON PHARMACEUTICAL COM 75886F107 67,193 -1,211 -1.77 30,336 8.10 0.1338
2015-04-21 2015-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 30,336,296 29,717
2015-01-23 2014-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 68,404 828 1.23 28,063 15.19 0.1217
2014-10-29 2014-09-30 13F/A-1 REGENERON PHARMACEUTICAL COM 75886F107 67,576 0 0.00 24,362 27.63 0.1076
2014-10-20 2014-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 67,576 24,362
2014-07-24 2014-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 67,576 -3,785 -5.30 19,088 -10.92 0.0851
2014-04-28 2014-03-31 13F REGENERON PHARMACEUTICAL COM 75886F107 71,361 -1,300 -1.79 21,428 7.15 0.0964
2014-01-30 2013-12-31 13F REGENERON PHARMACEUTICAL COM 75886F107 72,661 2,200 3.12 19,999 -9.28 0.0899
2013-10-24 2013-09-30 13F REGENERON PHARMACEUTICAL COM 75886F107 70,461 10,825 18.15 22,045 64.38 0.0972
2013-08-12 2013-06-30 13F REGENERON PHARMACEUTICAL COM 75886F107 59,636 59,636 13,411 0.0577
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.