Regeneron Pharmaceuticals, Inc.
MX ˙ BMV ˙ US75886F1075
SecurityMX:REGN / Regeneron Pharmaceuticals, Inc.
InstitutionPrivate Trust Co Na
Latest Disclosed Ownership247 shares
Latest Disclosed Value $ 190,842
Private Trust Co Na reports 24.75% increase in ownership of REGN / Regeneron Pharmaceuticals, Inc.

On April 30, 2026 - Private Trust Co Na filed a 13F-HR form disclosing ownership of 247 shares of Regeneron Pharmaceuticals, Inc. (MX:REGN) valued at $190,842 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 198 shares of Regeneron Pharmaceuticals, Inc.. This represents a change in shares of 24.75% 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)
2026-04-30 2026-03-31 13F Regeneron Pharmaceuticals Com 75886F107 247 49 24.75 191 25.00 0.0170
2026-01-26 2025-12-31 13F Regeneron Pharmaceuticals Com 75886F107 198 5 2.59 153 40.74 0.0134
2025-10-15 2025-09-30 13F Regeneron Pharmaceuticals Com 75886F107 193 2 1.05 109 8.00 0.0096
2025-07-29 2025-06-30 13F Regeneron Pharmaceuticals Com 75886F107 191 27 16.46 100 -3.85 0.0095
2025-04-28 2025-03-31 13F Regeneron Pharmaceuticals Com 75886F107 164 19 13.10 104 0.97 0.0107
2025-02-05 2024-12-31 13F Regeneron Pharmaceuticals Com 75886F107 145 -77 -34.68 103 -55.79 0.0106
2024-11-13 2024-09-30 13F Regeneron Pharmaceuticals Com 75886F107 222 -50 -18.38 233 -18.25 0.0235
2024-07-23 2024-06-30 13F Regeneron Pharmaceuticals Com 75886F107 272 -14 -4.90 286 3.64 0.0308
2024-04-24 2024-03-31 13F Regeneron Pharmaceuticals Com 75886F107 286 36 14.40 275 25.57 0.0297
2024-01-24 2023-12-31 13F Regeneron Pharmaceuticals Com 75886F107 250 -153 -37.97 220 -33.84 0.0258
2023-10-18 2023-09-30 13F Regeneron Pharmaceuticals Com 75886F107 403 94 30.42 332 49.10 0.0438
2023-07-28 2023-06-30 13F Regeneron Pharmaceuticals Com 75886F107 309 154 99.35 222 74.80 0.0280
2023-04-12 2023-03-31 13F Regeneron Pharmaceuticals Com 75886F107 155 44 39.64 127 0.0174
2023-01-18 2022-12-31 13F Regeneron Pharmaceuticals Com 75886F107 111 -4 -3.48 0 -100.00 0.0119
2022-10-17 2022-09-30 13F Regeneron Pharmaceuticals Com 75886F107 115 -3 -2.54 79 12.86 0.0128
2022-09-16 2022-06-30 13F/A-1 Regeneron Pharmaceuticals Com 75886F107 118 -1,595 -93.11 70 -94.15 0.0109
2022-07-13 2022-06-30 13F Regeneron Pharmaceuticals Equities 75886F107 1,713 0 1,196 0.1868
2022-04-12 2022-03-31 13F Regeneron Pharmaceuticals Equities 75886F107 1,713 -303 -15.03 1,196 -6.05 0.1868
2022-01-10 2021-12-31 13F Regeneron Pharmaceuticals Equities 75886F107 2,016 -132 -6.15 1,273 -2.08 0.1757
2021-10-06 2021-09-30 13F Regeneron Pharmaceuticals Equities 75886F107 2,148 96 4.68 1,300 13.44 0.1892
2021-07-07 2021-06-30 13F Regeneron Pharmaceuticals Equities 75886F107 2,052 231 12.69 1,146 33.10 0.1736
2021-04-06 2021-03-31 13F Regeneron Pharmaceuticals Equities 75886F107 1,821 1,002 122.34 861 117.97 0.1398
2021-01-05 2020-12-31 13F Regeneron Pharmaceuticals Equities 75886F107 819 269 48.91 395 28.66 0.0665
2020-10-01 2020-09-30 13F Regeneron Pharmaceuticals Equities 75886F107 550 -12 -2.14 307 -12.03 0.0592
2020-07-07 2020-06-30 13F Regeneron Pharmaceuticals Equities 75886F107 562 562 349 0.0732
2015-01-28 2014-12-31 13F Regeneron Pharmaceuticals Com 75886F107 0 -405 -100.00 0 -100.00
2014-10-09 2014-09-30 13F Regeneron Pharmaceuticals Com 75886F107 405 15 3.85 146 32.73 0.0496
2014-07-22 2014-06-30 13F Regeneron Pharmaceuticals Com 75886F107 390 0 0.00 110 -5.98 0.0358
2014-04-07 2014-03-31 13F Regeneron Pharmaceuticals Com 75886F107 390 200 105.26 117 125.00 0.0441
2014-01-08 2013-12-31 13F Regeneron Pharmaceuticals Com 75886F107 190 184 3,066.67 52 2,500.00 0.0209
2013-10-07 2013-09-30 13F Regeneron Pharmaceuticals Com 75886F107 6 -84 -93.33 2 -90.00 0.0009
2013-08-01 2013-06-30 13F Regeneron Pharmaceuticals Com 75886F107 90 0 0.00 20 0.00 0.0092
2013-07-26 2013-03-31 13F Regeneron Pharmaceuticals Com 75886F107 90 90 20 0.0092
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.