SCHLEIFER LEONARD S

REGN

SCHLEIFER LEONARD S serves as Bd. Co-Chair, President & CEO at Regeneron Pharmaceuticals, Inc. (REGN). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

2 trades

$130.89M

Net Position

Net Seller

$130.89M

Companies Traded

REGN

Active Period

Dec 2025 – Jan 2026

2 total trades

Most Recent

Sell REGN

Jan 5, 2026 · $22.06M

SCHLEIFER LEONARD S's Insider Trading at Regeneron Pharmaceuticals, Inc. (REGN)

Buys

0 · $0.00

Sells

2 · $130.89M

Total Shares Bought

Total Shares Sold

183,715

REGN Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Jan 5, 2026↗	Sell	28,570	$772.09	$22.06M	0
Dec 11, 2025↗	Sell	155,145	$701.51	$108.84M	0

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Jason Pitofsky

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REGNSell · Feb 9, 2026

Bonnie L Bassler

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REGNSell · Jan 7, 2026

Bonnie L Bassler

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REGNSell · Jan 7, 2026

YANCOPOULOS GEORGE

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REGNSell · Dec 31, 2025

SING GEORGE L

Director

REGNSell · Dec 30, 2025

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