SCHLEIFER LEONARD S

PrivateCIK: 1218629
Location

TARRYTOWN, NY

SCHLEIFER LEONARD S (President & CEO) exercised options at REGENERON PHARMACEUTICALS, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderSCHLEIFER LEONARD SCIK 1218629
DirectorOfficer· President & CEO
Since Dec 2018
-155.15K
Net shares
Net seller
$108.84M
Total sold
0
Open market trades
0B · 0S
3
Total transactions
172.72K acquired · 327.87K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+172.72K

Price / share

$555.67

Trade value

$95.98M

% of position

87.7%
12/9/2025
196.94K369.67K

Common Stock

Direct
F · Tax Withholding

Shares

155.15K

Price / share

$701.51

Trade value

$108.84M

% of position

42.0%
12/9/2025
369.67K214.52K
Total

Net shares

+17.58K

Net value

-$12.86M

Derivative Transactions1

Non-Qualified Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

172.72K shares

Shares

172.72K

Strike price

555.67

Held after

0.00

Exercisable

12/9/2025
Non-Derivative Holdings (Post-Transaction)4

Common Stock

Indirect
Shares owned127.48K

Common Stock

Indirect
Shares owned39.98K

Common Stock

Indirect
Shares owned300K

Common Stock

Indirect
Shares owned5.99K
Total
473.46K indirect473.46K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
SCHLEIFER LEONARD S — Insider Transaction (Form 4) Filed Dec 11, 2025 | Finecho