Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionGlenview Trust Co
Latest Disclosed Ownership3,968 shares
Latest Disclosed Value $ 3,065,835
Glenview Trust Co reports 0.08% decrease in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On May 8, 2026 - Glenview Trust Co filed a 13F-HR form disclosing ownership of 3,968 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $3,065,835 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 3,971 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of -0.08% 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)
2026-05-08 2026-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,968 -3 -0.08 3,066 0.00 0.0250
2026-02-09 2025-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,971 3 0.08 3,065 37.38 0.0473
2025-11-07 2025-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,968 -10 -0.25 2,231 6.85 0.0354
2025-08-14 2025-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,978 463 13.17 2,088 -6.33 0.0361
2025-05-20 2025-03-31 13F/A-1 REGENERON PHARMACEUTICALS COM 75886F107 3,515 444 14.46 2,229 1.92 0.0433
2025-05-15 2025-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,071 0 2,188 0.0213
2025-02-10 2024-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,071 25 0.82 2,188 -31.70 0.0410
2024-11-12 2024-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,046 0 0.00 3,202 0.03 0.0616
2024-08-14 2024-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,046 -3 -0.10 3,201 9.10 0.0644
2024-05-14 2024-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,049 0 0.00 2,935 9.60 0.0630
2024-02-12 2023-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,049 -38 -1.23 2,678 5.39 0.0658
2023-11-13 2023-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,087 29 0.95 2,540 15.61 0.0701
2023-08-14 2023-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,058 -31 -1.00 2,197 -13.44 0.0600
2023-05-09 2023-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,089 0 0.00 2,538 13.91 0.0760
2023-02-08 2022-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,089 205 7.11 2,229 12.13 0.0738
2022-11-04 2022-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,884 333 13.05 1,987 31.76 0.0753
2022-08-10 2022-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,551 23 0.91 1,508 -14.61 0.0554
2022-05-11 2022-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,528 -1 -0.04 1,766 10.58 0.0573
2022-02-10 2021-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,529 -105 -3.99 1,597 0.19 0.0528
2021-11-12 2021-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,634 25 0.96 1,594 9.40 0.0616
2021-08-11 2021-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,609 150 6.10 1,457 25.28 0.0563
2021-05-12 2021-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,459 -24 -0.97 1,163 -3.08 0.0501
2021-02-02 2020-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 2,483 -12 -0.48 1,200 -14.10 0.0558
2020-11-12 2020-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,495 -775 -23.70 1,397 -31.49 0.0724
2020-08-12 2020-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 3,270 10 0.31 2,039 28.08 0.1162
2020-04-28 2020-03-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,260 45 1.40 1,592 31.90 0.1104
2020-02-06 2019-12-31 13F REGENERON PHARMACEUTICALS COM 75886F107 3,215 820 34.24 1,207 81.78 0.0675
2019-11-14 2019-09-30 13F REGENERON PHARMACEUTICALS COM 75886F107 2,395 1,165 94.72 664 72.47 0.0402
2019-08-08 2019-06-30 13F REGENERON PHARMACEUTICALS COM 75886F107 1,230 1,230 385 0.0239
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.