Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionUtah Retirement Systems
Latest Disclosed Ownership16,492 shares
Latest Disclosed Value $ 12,742,379
Utah Retirement Systems reports 3.40% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 16,492 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $12,742,379 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 17,072 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -3.40% 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)
2026-05-15 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 16,492 -580 -3.40 12,742 -3.30 0.1302
2026-02-17 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,072 -153 -0.89 13,177 36.06 0.1254
2025-11-14 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,225 23 0.13 9,685 7.24 0.0941
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,202 -120 -0.69 9,031 -17.80 0.0943
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,322 0 0.00 10,986 -10.96 0.1267
2025-02-14 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,322 30 0.17 12,339 -32.13 0.1359
2024-11-14 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,292 64 0.37 18,178 0.39 0.2051
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,228 -527 -2.97 18,107 5.96 0.2150
2024-05-15 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,755 -14 -0.08 17,089 9.50 0.1998
2024-02-14 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 17,769 -61 -0.34 15,606 6.36 0.1988
2023-11-14 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,830 42 0.24 14,673 14.80 0.2097
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 17,788 -668 -3.62 12,781 -15.71 0.1772
2023-05-16 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,456 45 0.24 15,165 14.16 0.2193
2023-02-15 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,411 -175 -0.94 13,283 3.75 0.2106
2022-11-14 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,586 91 0.49 12,803 17.10 0.2135
2022-08-16 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,495 247 1.35 10,933 -14.22 0.1750
2022-05-13 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,248 100 0.55 12,745 11.20 0.1696
2022-02-14 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,148 41 0.23 11,461 4.59 0.1416
2021-11-16 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,107 -953 -5.00 10,958 2.93 0.1482
2021-08-16 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 19,060 558 3.02 10,646 21.61 0.1370
2021-05-17 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 18,502 -800 -4.14 8,754 -6.12 0.1220
2021-02-16 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 19,302 800 4.32 9,325 -9.96 0.1324
2020-11-16 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,502 100 0.54 10,357 -9.75 0.1719
2020-08-13 2020-06-30 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 18,402 2,850 18.33 11,476 51.12 0.2106
2020-08-13 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 18,402 2,850 11,476 210,631.0305
2020-05-15 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,552 0 0.00 7,594 30.03 0.1643
2020-02-12 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,552 0 0.00 5,840 35.37 0.1027
2019-11-14 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 15,552 100 0.65 4,314 -10.79 0.0821
2019-08-14 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 15,452 194 1.27 4,836 -22.81 0.0926
2019-05-15 2019-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 15,258 484 3.28 6,265 13.54 0.1242
2019-02-08 2018-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,774 0 0.00 5,518 -7.56 0.1248
2018-11-13 2018-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,774 0 0.00 5,969 17.11 0.1156
2018-08-10 2018-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,774 0 0.00 5,097 0.18 0.1055
2018-05-15 2018-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,774 0 0.00 5,088 -8.39 0.1082
2018-02-14 2017-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,774 400 2.78 5,554 -13.58 0.1167
2017-11-13 2017-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,374 0 0.00 6,427 -8.95 0.1445
2017-08-08 2017-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,374 122 0.86 7,059 27.81 0.1645
2017-05-11 2017-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,252 0 0.00 5,523 5.56 0.1321
2017-02-10 2016-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,252 0 0.00 5,232 -8.68 0.1316
2016-11-07 2016-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,252 0 0.00 5,729 15.09 0.1483
2016-08-03 2016-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,252 100 0.71 4,978 -2.41 0.1327
2016-05-10 2016-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,152 0 0.00 5,101 -33.61 0.1383
2016-02-11 2015-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,152 100 0.71 7,683 17.55 0.2083
2015-11-03 2015-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,052 0 0.00 6,536 -8.82 0.1872
2015-08-11 2015-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,052 -100 -0.71 7,168 12.18 0.1905
2015-05-14 2015-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,152 500 3.66 6,390 14.09 0.1679
2015-02-11 2014-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 13,652 0 0.00 5,601 13.82 0.1540
2014-11-06 2014-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,652 -100 -0.73 4,921 26.67 0.1411
2014-08-08 2014-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 13,752 -700 -4.84 3,885 -10.48 0.1113
2014-05-08 2014-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,452 100 0.70 4,340 9.87 0.1252
2014-02-05 2013-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 14,352 0 0.00 3,950 -12.03 0.1169
2013-11-06 2013-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,352 -100 -0.69 4,490 38.15 0.1453
2013-08-02 2013-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 14,452 14,452 3,250 0.1098
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.