Regeneron Pharmaceuticals Inc. (REGN) — Insider Trading

Name: Insider Trading Regeneron Pharmaceuticals Inc. (REGN) — September 2026
Creator: WhaleSentiment

Sector: Healthcare • All Insider Transactions

🔄 Last update: 09/19/2026 at 14:10 UTC

Sales (90d)

$3.4M

6 transactions

Buys (90d)

0 transactions

WhaleSentiment Score ℹ️

⚪ +0

Neutro

Form 144 Filings

Upcoming sale notices

Stock Price REGN 📉

REGN stock price — last 6 months

Last Price

$784.85

18/09/2026 (market close)

Daily Change

-4.60 (-0.58%)

6-Month Performance

+6.7%

$735.49 → $784.85

6M High / 6M Low

$852.03

Min: $599.96

▲ = insider buy (0), ▼ = insider sell (6)

Data from Yahoo Finance, 15-min delay. Last update: 18/09/2026 (market close).

All Insider Transactions REGN — 2026

Insider Transactions

Date	Insider	Role	Type	Shares	Price	Value
09/03/2026	McCourt Marion	EVP Commercial	Sale	1,131	$857.39	$1.0M
09/02/2026	McCourt Marion	EVP Commercial	Sale	1,215	$850.00	$1.0M
09/02/2026	Guarini Kathryn	Director	Exercise	400	$719.37	$0.3M
09/02/2026	Guarini Kathryn	Director	Sale	400	$850.00	$0.3M
09/02/2026	Guarini Kathryn	Director	Exercise	400	—	—
08/19/2026	LAROSA JOSEPH J	EVP General Counsel and Secret	Exercise	12,282	$381.92	$4.7M
08/19/2026	LAROSA JOSEPH J	EVP General Counsel and Secret	Tax	9,019	$830.15	$7.5M
08/19/2026	LAROSA JOSEPH J	EVP General Counsel and Secret	Exercise	12,282	—	—
08/18/2026	Fenimore Christopher R.	EVP Finance CFO	Exercise	6,283	$381.92	$2.4M
08/18/2026	Fenimore Christopher R.	EVP Finance CFO	Tax	4,599	$813.47	$3.7M
08/18/2026	Fenimore Christopher R.	EVP Finance CFO	Exercise	6,283	—	—
08/10/2026	Guarini Kathryn	Director	Exercise	400	$719.37	$0.3M
08/10/2026	Guarini Kathryn	Director	Sale	400	$800.00	$0.3M
08/10/2026	Guarini Kathryn	Director	Exercise	400	—	—
08/10/2026	Zoghbi Huda Y	Director	Exercise	800	$376.69	$0.3M
08/10/2026	Zoghbi Huda Y	Director	Sale	800	$800.00	$0.6M
08/10/2026	Zoghbi Huda Y	Director	Exercise	800	—	—
07/02/2026	RYAN ARTHUR F	Director	Sale	200	$650.15	$0.1M

Holdings Summary

Insider	Role	Shares Held	Last Transaction
LAROSA JOSEPH J	EVP General Counsel and Secret	45,392	08/19/2026
Fenimore Christopher R.	EVP Finance CFO	24,583	08/18/2026
RYAN ARTHUR F	Director	17,303	07/02/2026
McCourt Marion	EVP Commercial	12,003	09/03/2026
Zoghbi Huda Y	Director	2,503	08/10/2026
Guarini Kathryn	Director	1,003	09/02/2026

⚠️ Form 144 — Upcoming Sale Notices

Form 144 is filed BEFORE the actual sale. It is an important leading indicator.

Filing Date	Type	SEC Link
09/03/2026	144	View Filing →
09/02/2026	144	View Filing →
09/02/2026	144	View Filing →
08/10/2026	144	View Filing →
08/10/2026	144	View Filing →

Financial Context

Recent financial data from SEC filings (XBRL) to contextualize insider activity.

Revenue (latest quarter)

$1511M

Period: 2018-03-31

Net Income

$1297M

Profit

Diluted EPS

$12.23

Per share

What is Insider Trading on Regeneron Pharmaceuticals Inc.?

Legal insider trading occurs when executives, directors, and major shareholders (>10%) of a public company buy or sell shares of their own company and report it to the SEC via Form 4.

How to Read the Data

Open market purchases (P) — the strongest signal. The insider uses their own money to buy shares.

Signals to Watch for REGN

Cluster buying: multiple Regeneron Pharmaceuticals Inc. insiders buying in the same week → very bullish signal
Excessive selling: selling volume above historical average → possible concern signal
Form 144: filing of a sale notice → imminent sale in the coming days/weeks
10b5-1 Plan: pre-programmed sales are less significant than discretionary sales

Sources & References

All data on this page comes directly from public SEC filings.

📋 View all Form 4 filings on SEC EDGAR REGN →

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⚠️ Disclaimer: WhaleSentiment provides public SEC data for informational and educational purposes only. It does not provide financial advice, investment recommendations, or solicitation to buy/sell financial instruments. Always consult a qualified financial advisor before making investment decisions.