Regeneron Pharmaceuticals, Inc. (REGN) Insider Trading

Over the last 3 months, REGN insiders made 0 open-market buys and 3 sales, a net sale of -$1.1M (SEC Form 4). Over the last 6 months, 1053 institutions increased and 1026 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
3
Net (3m)
-$1.1M
Insider trades by month Buys Sells
Jan
Feb
Apr
May
Jul
Aug
Context3-month price +28.6%Institutions mixed (13F)
DateInsiderTypeSharesPrice
Aug 21, 2026LAROSA JOSEPH Jofficer: EVP General Counsel and SecretTax9,019$830.15
Aug 21, 2026LAROSA JOSEPH Jofficer: EVP General Counsel and SecretOption12,282$381.92
Aug 20, 2026Fenimore Christopher R.officer: EVP Finance CFOTax4,599$813.47
Aug 20, 2026Fenimore Christopher R.officer: EVP Finance CFOOption6,283$381.92
Aug 12, 2026Zoghbi Huda YdirectorSell800$800.00
Aug 12, 2026Guarini KathryndirectorOption400$719.37
Aug 12, 2026Guarini KathryndirectorSell400$800.00
Aug 12, 2026Zoghbi Huda YdirectorOption800$376.69
Jul 7, 2026RYAN ARTHUR FdirectorSell200$650.15
May 4, 2026RYAN ARTHUR FdirectorSell4$707.40
May 4, 2026RYAN ARTHUR FdirectorSell7$706.74
May 4, 2026RYAN ARTHUR FdirectorSell1$712.09
May 4, 2026RYAN ARTHUR FdirectorSell15$702.46
May 4, 2026RYAN ARTHUR FdirectorSell14$705.56
May 4, 2026RYAN ARTHUR FdirectorSell2$710.87
May 4, 2026RYAN ARTHUR FdirectorSell6$709.45
May 4, 2026RYAN ARTHUR FdirectorSell5$701.76
May 4, 2026RYAN ARTHUR FdirectorSell24$703.46
Apr 3, 2026RYAN ARTHUR FdirectorSell13$776.62
Apr 3, 2026RYAN ARTHUR FdirectorSell1$771.32
Apr 3, 2026RYAN ARTHUR FdirectorSell9$777.42
Apr 3, 2026RYAN ARTHUR FdirectorSell14$775.58
Apr 3, 2026RYAN ARTHUR FdirectorSell8$773.59
Apr 3, 2026RYAN ARTHUR FdirectorSell4$778.24
Apr 3, 2026RYAN ARTHUR FdirectorSell40$779.71
Apr 3, 2026RYAN ARTHUR FdirectorSell3$772.76
Feb 23, 2026Zoghbi Huda YdirectorSell331$780.45
Feb 23, 2026Zoghbi Huda YdirectorSell298$782.10
Feb 23, 2026Zoghbi Huda YdirectorSell160$784.45
Feb 23, 2026Zoghbi Huda YdirectorSell209$781.28

Source: REGN SEC Form 4 filings, latest Aug 21, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their REGN positions over the last 6 months (SEC Form 13F).

Increased
1053
New positions
265
Reduced
1026
Sold out
177
Largest moves
InstitutionActionSharesFiled
BlackRock, Inc.Increased9.1MAug 7, 2026
BLACKROCK, INC.Increased8.9MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position6.7MMay 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCReduced6.6MAug 13, 2026
DODGE & COXIncreased4.9MAug 13, 2026
STATE STREET CORPIncreased4.8MAug 7, 2026
STATE STREET CORPIncreased4.7MMay 15, 2026
DODGE & COXReduced4.5MMay 14, 2026
JPMORGAN CHASE & COIncreased4.3MMay 13, 2026
Invesco Ltd.Increased3.9MAug 14, 2026
JPMORGAN CHASE & COReduced3.8MAug 12, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCIncreased3.2MAug 13, 2026
FRANKLIN RESOURCES INCIncreased2.8MAug 13, 2026
FRANKLIN RESOURCES INCIncreased2.7MMay 13, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased2.6MAug 12, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.