144Filing Date: Aug 10, 2026

Regeneron (REGN)

Insider Proposed Sale Notice

Zoghbi Huda Y

Director·Regeneron

Proposed

CommonNASDAQ

Shares800

Est. DateAug 10

Market Value$640.0K

BrokerUBS Financial Services, Inc.

AcquisitionExercise of stock options · Issuer

Acquired DateAug 10, 2026

Amount Acquired800

10b5-1 Plan Adoption11/20/2025

% Outstanding0.0008%

10b5-1

Exercise / Payment Details

Paid: Aug 10, 2026Method: Cash

No sales in the past 3 months

Signature & Compliance expand_more

Notice DateAug 10, 2026

10b5-1 Plan Adoption11/20/2025

Signature /s/ UBS Financial Services Inc, as attorney-in-fact for Huda Zoghbi

Issuer Info expand_more

CompanyREGENERON PHARMACEUTICALS, INC.

CIK0000872589

SEC File No.000-19034

Phone9148477000

Address777 OLD SAW MILL RIVER ROAD, TARRYTOWN, NY 10591