SCHLEIFER LEONARD S
SEC insider (Form 3/4/5 filer). CIK 0001218629. Bd. Co-Chair, President & CEO at REGENERON PHARMACEUTICALS, INC. (REGN). 4 reported Form 4/5 transactions since Sep 2024; latest on Dec 31, 2025. Located in TARRYTOWN, NY.
Companies SCHLEIFER LEONARD S has filed insider reports for
- REGENERON PHARMACEUTICALS, INC. (REGN): Director, Officer, Bd. Co-Chair, President & CEO
SCHLEIFER LEONARD S
CIK: 0001218629
Transaction Breakdown
Open Market Buys (P)0 (0.0%)
High conviction signal
Open Market Sales (S)0 (0.0%)
Position reduction
Option Exercises (M)2 (50.0%)
Derivative conversions
Awards (A)0 (0.0%)
Compensation grants
Other (G, F, J, C, D, …)2 (50.0%)
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
REGN
REGENERON PHARMACEUTICALS, INC.
DirectorOfficer
Discretionary Trading P&L
Holdings
Transaction History (4 total)
- Dec 31, 2025REGN
REGENERON PHARMACEUTICALS, INC.
ExerciseDirect28.6K shares- - Dec 31, 2025REGN
REGENERON PHARMACEUTICALS, INC.
Tax PaymentDirect28.6K shares at avg. $772.09$22.1M - Dec 9, 2025REGN
REGENERON PHARMACEUTICALS, INC.
ExerciseDirect172.7K shares at avg. $555.67$96.0M - Dec 9, 2025REGN
REGENERON PHARMACEUTICALS, INC.
Tax PaymentDirect155.1K shares at avg. $701.51$108.8M
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Dec 31, 2025 | REGN REGENERON PHARMACEUTICALS, INC. | Exercise | 28,570 | - | $0 | Direct |
| Dec 31, 2025 | REGN REGENERON PHARMACEUTICALS, INC. | Tax Payment | 28,570 | $772.09 | $22,058,611 | Direct |
| Dec 9, 2025 | REGN REGENERON PHARMACEUTICALS, INC. | Exercise | 172,723 | $555.67 | $95,976,989 | Direct |
| Dec 9, 2025 | REGN REGENERON PHARMACEUTICALS, INC. | Tax Payment | 155,145 | $701.51 | $108,835,769 | Direct |
1-4 of 4 transactions