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

9 trades

$342.76M

Net Position

Net Seller

$342.76M

Companies Traded

REGN

Active Period

Aug 2021 – Dec 2025

9 total trades

Most Recent

Sell REGN

Dec 11, 2025 · $108.84M

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

Buys

0 · $0.00

Sells

9 · $342.76M

Total Shares Bought

Total Shares Sold

469,916

REGN Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Dec 11, 2025	Sell	155,145	$701.51	$108.84M	0
Jun 13, 2024	Sell	25,213	$1015.75	$25.61M	56,877
Jun 10, 2024	Sell	787	$1015.02	$798.8K	64,198
May 17, 2024	Sell	22,830	$979.22	$22.36M	467,020
May 15, 2024	Sell	35,941	$979.58	$35.21M	410,502
Apr 7, 2022	Sell	7,114	$710.05	$5.05M	13,831
Apr 4, 2022	Sell	2,886	$710.01	$2.05M	18,292
Aug 20, 2021	Sell	210,000	$650.50	$136.61M	304,746
Aug 17, 2021	Sell	10,000	$624.36	$6.24M	41,007