Regeneron Pharmaceuticals Ownership & Insider Activity

Regeneron Pharmaceuticals (REGN) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 1.3% of shares outstanding. Institutional investors hold 63.6%. Over the past 90 days, insiders made 1 sale worth $2.0M.

Shares Outstanding

102.955M

Shares Float

97.316M

Insider Shares Owned

1.318M

Insider % Owned

1.3%

Institutional Shares Held

65.449M

Institutional % Held

63.6%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$2.0M total

Net Activity

Net Selling

Net Value (90d)

-$2.0M

Regeneron Pharmaceuticals Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 13, 2026	Andrew Murphy	CO-CHIEF SCIENTIFIC OFFICER	SELL-OPTIONS	—	$570.46	$6.4M
Sep 2, 2026	Marion McCourt	EVP COMMERCIAL	SELL	2.346K	$853.56	$2.0M
Sep 2, 2026	Kathryn Guarini	DIRECTOR	SELL-OPTIONS	—	$784.68	$52K
Aug 10, 2026	Kathryn Guarini	DIRECTOR	SELL-OPTIONS	—	$759.68	$32K
Aug 10, 2026	Huda Y Zoghbi	DIRECTOR	SELL-OPTIONS	—	$588.35	$339K
Jul 2, 2026	Arthur F Ryan	DIRECTOR	SELL	200.000	$650.15	$130K
May 1, 2026	Arthur F Ryan	DIRECTOR	SELL	100.000	$705.24	$71K

Date	Member	Party	Chamber	Action	Amount
May 15, 2026	Gilbert Ray Cisneros	D	House	Sale	$1,001 - $15,000
Mar 27, 2026	Alan Armstrong	R	Senate	Purchase	$1,001 - $15,000
Feb 12, 2026	Julia Letlow	R	House	Purchase	$1,001 - $15,000
Nov 18, 2025	Gilbert Ray Cisneros	D	House	Purchase	$1,001 - $15,000
May 15, 2025	Robert Bresnahan	R	House	Purchase	$1,001 - $15,000
Apr 10, 2025	Byron Donalds	R	House	Sale	$1,001 - $15,000
Apr 10, 2025	Byron Donalds	R	House	Sale	$1,001 - $15,000
Apr 8, 2025	Robert Bresnahan	R	House	Sale	$1,001 - $15,000
Apr 7, 2025	Jefferson Shreve	R	House	Sale	$15,001 - $50,000
Apr 1, 2025	Julie Johnson	D	House	Sale	$1,001 - $15,000
Feb 25, 2025	Robert Bresnahan	R	House	Sale	$1,001 - $15,000
Feb 12, 2025	Julie Johnson	D	House	Sale (Partial)	$1,001 - $15,000
Jan 24, 2025	Josh Gottheimer	D	House	Sale	$1,001 - $15,000
Jan 15, 2025	Julie Johnson	D	House	Purchase	$1,001 - $15,000
Nov 29, 2024	Josh Gottheimer	D	House	Sale	$1,001 - $15,000
Nov 19, 2024	Josh Gottheimer	D	House	Sale	$1,001 - $15,000
Nov 13, 2024	Jonathan Jackson	D	House	Sale	$15,001 - $50,000
Nov 1, 2024	Jonathan Jackson	D	House	Sale (Partial)	$1,001 - $15,000
Oct 23, 2024	Josh Gottheimer	D	House	Sale (Partial)	$1,001 - $15,000
Oct 15, 2024	Greg Landsman	D	House	Sale	$1,001 - $15,000