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 63.1%. Over the past 90 days, insiders made 5 sales worth $26.8M.

Shares Outstanding

103.448M

Shares Float

97.809M

Insider Shares Owned

1.318M

Insider % Owned

1.3%

Institutional Shares Held

65.227M

Institutional % Held

63.1%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$26.8M total

Net Activity

Net Selling

Net Value (90d)

-$26.8M

Regeneron Pharmaceuticals Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Nov 4, 2026	Jason Pitofsky	SVP CONTROLLER	SELL	179.000	$791.42	$1.3M
Nov 3, 2026	Huda Y Zoghbi	DIRECTOR	SELL-OPTIONS	—	$675.71	$4.4M
Nov 2, 2026	George L Sing	DIRECTOR	SELL	5.860K	$671.57	$14.6M
Nov 2, 2026	Christine A Poon	DIRECTOR	SELL-OPTIONS	—	$672.89	$4.6M
Nov 2, 2026	Joseph LaRosa	EVP GENERAL COUNSEL AND SECRET	SELL	869.000	$668.76	$7.9M
Oct 30, 2026	Kathryn Guarini	DIRECTOR	SELL-OPTIONS	—	$809.68	$72K
Oct 30, 2026	Michael S Brown	DIRECTOR	SELL-OPTIONS	—	$800.44	$288K
Oct 30, 2026	Marion McCourt	EVP COMMERCIAL	SELL	1.132K	$869.43	$984K
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

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