Regeneron Pharmaceuticals, Inc. (REGN) Insider Ownership

Historic Insider Ownership Trends

As of March 23, 2026, Regeneron Pharmaceuticals's top three insider holders are P Roy Vagelos (Director, 312.58K shares), George Yancopoulos (Bd. Co Chair, President Cso, 310.46K shares), Leonard S Schleifer (Bd. Co Chair, President Ceo, 214.52K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
P Roy Vagelos 312,578 0 24 Mar, 2023
George Yancopoulos Bd. Co Chair, President Cso 310,460 0 05 Jan, 2026
Leonard S Schleifer Bd. Co Chair, President Ceo 214,523 0 05 Jan, 2026
P Roy Vagelos 0 125,493 05 Apr, 2023
George Yancopoulos Bd. Co Chair, President Cso 0 56,048 12 Jun, 2024
Neil Stahl Evp Research And Development 48,829 0 18 Dec, 2024
Andrew J Murphy Evp Research 47,833 0 11 Dec, 2025
George L Sing 31,007 0 06 Jan, 2026
Joseph J Larosa Evp General Counsel And Secret 29,517 0 09 Dec, 2025
Robert E Landry Evp Finance Cfo 23,693 0 06 Feb, 2024
Plew Daniel P Van Evp General Mgr, Industrial 21,673 0 11 Dec, 2025
Christopher R. Fenimore Evp Finance Cfo 18,300 0 09 Dec, 2025
Arthur F Ryan 17,703 0 03 Mar, 2026
Marion Mccourt Evp Commercial 14,349 0 11 Dec, 2025
Joseph L Goldstein 6,703 0 06 Jan, 2026
Michael S Brown 0 6,162 08 Feb, 2023
Christine A Poon 5,219 0 06 Jan, 2026
Christine A Poon 5,219 0 06 Jan, 2026
Neil Stahl Evp Research And Development 0 4,605 06 Dec, 2021
Jason Pitofsky Svp Controller 4,272 0 11 Feb, 2026
Marc Tessier-Lavigne 2,434 0 05 Jan, 2023
N Anthony Coles 1,714 0 06 Jan, 2026
Bonnie L Bassler 1,703 0 08 Jan, 2026
Michael S Brown 1,703 0 06 Jan, 2026
Huda Y Zoghbi 1,703 0 23 Feb, 2026
George L Sing 0 1,000 18 Nov, 2021
Craig B. Thompson 775 0 06 Jan, 2026
David P Schenkein 603 0 06 Jan, 2026
Kathryn Guarini 603 0 06 Jan, 2026
Jason Pitofsky Vp Controller 0 179 10 Dec, 2024
Christopher R. Fenimore Svp Finance Cfo 0 25 29 Aug, 2024

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
02 Mar, 2026 Arthur F Ryan Common Stock D 7 $777.46 17,796 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 2 $778.30 17,794 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 5 $779.69 17,789 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 3 $780.69 17,786 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 2 $781.21 17,784 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 2 $782.62 17,782 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 10 $783.62 17,772 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 9 $784.48 17,763 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 11 $785.48 17,752 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 7 $786.61 17,745 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 2 $787.34 17,743 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 20 $788.96 17,723 D S
02 Mar, 2026 Arthur F Ryan Common Stock D 20 $789.28 17,703 D S
19 Feb, 2026 Huda Y Zoghbi Common Stock A 1,638 $376.69 3,341 D M
19 Feb, 2026 Huda Y Zoghbi Common Stock D 49 $774.68 3,292 D S
19 Feb, 2026 Huda Y Zoghbi Common Stock D 50 $775.50 3,242 D S
19 Feb, 2026 Huda Y Zoghbi Common Stock D 53 $778.47 3,189 D S
19 Feb, 2026 Huda Y Zoghbi Common Stock D 208 $779.55 2,981 D S
19 Feb, 2026 Huda Y Zoghbi Common Stock D 331 $780.45 2,650 D S
19 Feb, 2026 Huda Y Zoghbi Common Stock D 209 $781.28 2,441 D S