Regeneron Pharmaceuticals, Inc.
REGN- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0000872589
In the last 90 days, Regeneron Pharmaceuticals, Inc. insiders filed 0 open-market purchases and 5 sales; 1,341 institutions reported holding it in 13F filings for Q2 2026, worth $57.1B in total; Southeastern Asset Management (Longleaf) is the only superinvestor holding it.
Holders of 5% or more of REGN
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Regeneron Pharmaceuticals, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Vanguard Capital Management LLC | 13G | 7.37%7.66M shares | New | Apr 30, 20261 filing | Apr 30, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
26 Schedule 13D and 13G filings on Regeneron Pharmaceuticals, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Apr 30, 20261:03 PM ET | Vanguard Capital Management LLC | 13G | 7.37%7.66M shares | New | Mar 31, 2026 | SEC |
| Mar 27, 202611:37 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Aug 6, 202512:11 PM ET | FMR LLCand 1 other | 13G/A | 3.20%3.36M shares | −4.40 ppfrom 7.60%Below 5% | Jun 30, 2025 | SEC |
| Jun 5, 202511:11 AM ET | JPMorgan Chase & Co | 13G/A | 4.40%4.74M shares | −0.70 ppfrom 5.10%Below 5% | May 30, 2025 | SEC |
| Apr 22, 202512:01 PM ET | JPMorgan Chase & Co | 13G/A | 5.10%5.55M shares | – | Mar 31, 2025 | SEC |
| Feb 12, 20259:30 AM ET | FMR LLCand 1 other | 13G/A | 7.60%8.19M shares | – | Dec 31, 2024 | SEC |
| Feb 13, 2024 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | Capital World Investors | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2024 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Jan 25, 20244:59 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 25, 2024 | JPMorgan Chase & Co | 13G/AOld format | – | – | – | SEC |
| Jan 25, 2024 | JPMorgan Chase & Co | 13G/AOld format | – | – | – | SEC |
| Feb 13, 2023 | Capital World Investors | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2023 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 3, 20234:27 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Jan 11, 2023 | JPMorgan Chase & Co | 13GOld format | – | New | – | SEC |
| Oct 11, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 11, 2022 | Capital World Investors | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2022 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 9, 2022 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20225:08 PM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
| Feb 16, 2021 | Capital World Investors | 13G/AOld format | – | – | – | SEC |
| Feb 10, 2021 | Vanguard Group Inc | 13G/AOld format | – | – | – | SEC |
| Feb 8, 2021 | FMR LLC | 13G/AOld format | – | – | – | SEC |
| Feb 1, 20218:23 AM ET | BlackRock Inc. | 13G/AOld format | – | – | – | SEC |
Form 144: proposed insider sales
61 notices from officers, directors and other affiliates planning to sell Regeneron Pharmaceuticals, Inc. shares, newest first.
| Filed (ET) | Seller | Shares to sell | Market value | Planned sale | Broker | Filing |
|---|---|---|---|---|---|---|
| Jun 24, 20242:46 PM ET | Bassler Bonnie LDirector | 756 | $802.9K | Jun 24, 202410b5-1 | RBC WEALTH MANAGEMENT | SEC |
| Jun 14, 20244:26 PM ET | Michael S BrownDirector | 1.53K | $1.58M | Jun 14, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Jun 12, 20245:04 PM ET | Schleifer Leonard SOfficer · Director | 1.00K | $1.03M | Jun 12, 202410b5-1 | UBS Financial Services Inc. | SEC |
| Jun 6, 20244:12 PM ET | Schleifer Leonard SOfficer | 25.0K | $25.1M | Jun 6, 202410b5-1 | UBS Financial Services Inc. | SEC |
| Jun 5, 20242:24 PM ET | Bassler Bonnie LDirector | 827 | $836.1K | Jun 5, 202410b5-1 | RBC WEALTH MANAGEMENT | SEC |
| Jun 3, 20244:36 PM ET | Marion E McCourtOfficer | 1.14K | $1.12M | Jun 3, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 28, 20244:29 PM ET | Michael S BrownDirector | 1.17K | $1.15M | May 28, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| May 21, 20244:10 PM ET | Larosa Joseph JOfficer | 3.73K | $470.6K | May 21, 202410b5-1 | UBS Financial Services Inc. | SEC |
| May 15, 20244:16 PM ET | Yancopoulos GeorgeOfficer · Director | 100.0K | $98.8M | May 15, 202410b5-1 | UBS Financial Services Inc. | SEC |
| May 14, 20244:21 PM ET | Schleifer Leonard SOfficer · Director | 58.8K | $57.6M | May 14, 202410b5-1 | UBS Financial Services Inc. | SEC |
| May 1, 20245:33 PM ET | Arthur F. RyanDirector | 300 | $266.7K | May 1, 202410b5-1 | J.P. Morgan Securities LLC | SEC |
| May 1, 20245:04 PM ET | Marion E McCourtOfficer | 250 | $222.4K | May 1, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Apr 1, 20244:28 PM ET | Marion E McCourtOfficer | 250 | $241.2K | Apr 1, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Mar 14, 20244:31 PM ET | Murphy Andrew JOfficer | 5.78K | $5.59M | Mar 14, 202410b5-1 | UBS Financial Services, Inc. | SEC |
| Mar 1, 20244:14 PM ET | Marion E McCourtOfficer | 358 | $346.4K | Mar 1, 202410b5-1 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 26, 20244:34 PM ET | Joseph LaRosaOfficer | 3.00K | $2.97M | Feb 26, 2024 | UBS Financial Services Inc | SEC |
| Feb 26, 20244:07 PM ET | George L. SingOfficer | 1.00K | $992.5K | Feb 26, 2024 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 26, 20243:25 PM ET | Bassler Bonnie LDirector | 854 | $836.3K | Feb 26, 2024 | RBC WEALTH MANAGEMENT | SEC |
| Feb 23, 20244:04 PM ET | George L. SingOfficer | 500 | $492.5K | Feb 23, 2024 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 22, 20245:10 PM ET | Robert LandryFormer CFO | 3.10K | $2.97M | Feb 22, 2024 | UBS Financial Services Inc | SEC |
| Feb 22, 20244:06 PM ET | George L. SingOfficer | 3.00K | $1.93M | Feb 22, 2024 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 14, 20245:08 PM ET | Daniel Van PlewOfficer | 10.4K | $9.95M | Feb 14, 2024 | Goldman Sachs & Co. LLC | SEC |
| Feb 9, 20244:04 PM ET | George L. SingOfficer | 500 | $477.5K | Feb 9, 2024 | Morgan Stanley Smith Barney LLC Executive Financial Services | SEC |
| Feb 9, 202412:22 PM ET | Christopher FenimoreOfficer | 4.92K | $4.69M | Feb 9, 2024 | UBS Financial Services Inc | SEC |
| Feb 8, 20244:56 PM ET | Landry Robert EFormer CFO | 6.31K | $5.90M | Feb 8, 202410b5-1 | UBS Financial Services, Inc. | SEC |
Showing the latest 25. See the REGN notices from the last 12 months