Bonnie L Bassler

REGN

Bonnie L Bassler serves as Director 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

21 trades

$19.18M

Net Position

Net Seller

$19.18M

Companies Traded

REGN

Active Period

Jul 2021 – Jan 2026

21 total trades

Most Recent

Sell REGN

Jan 8, 2026 · $1.20M

Bonnie L Bassler's Insider Trading at Regeneron Pharmaceuticals, Inc. (REGN)

Buys

0 · $0.00

Sells

21 · $19.18M

Total Shares Bought

Total Shares Sold

24,640

REGN Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Jan 8, 2026	Sell	1,500	$800.00	$1.20M	0
Nov 24, 2025	Sell	760	$750.00	$570.0K	0
Aug 19, 2024	Sell	756	$1170.00	$884.5K	1,382
Aug 5, 2024	Sell	756	$1115.00	$842.9K	1,382
Jun 25, 2024	Sell	756	$1062.00	$802.9K	1,382
Jun 7, 2024	Sell	827	$1011.00	$836.1K	1,382
Feb 26, 2024	Sell	854	$979.25	$836.3K	1,382
Jan 31, 2024	Sell	827	$959.00	$793.1K	1,382
Jan 4, 2024	Sell	826	$914.00	$755.0K	1,382
Dec 14, 2023	Sell	610	$870.00	$530.7K	1,247
Aug 23, 2023	Sell	853	$829.00	$707.1K	1,247
Aug 11, 2023	Sell	853	$789.00	$673.0K	1,247
Mar 27, 2023	Sell	1,240	$818.00	$1.01M	1,247
Feb 7, 2023	Sell	1,021	$779.00	$795.4K	1,247
Dec 12, 2022	Sell	218	$779.00	$169.8K	1,082
Sep 12, 2022	Sell	3,167	$704.65	$2.23M	1,082
Apr 11, 2022	Sell	1,240	$725.00	$899.0K	1,082
Apr 1, 2022	Sell	1,240	$700.00	$868.0K	1,082
Aug 17, 2021	Sell	1,219	$630.00	$768.0K	891
Aug 6, 2021	Sell	2,559	$600.00	$1.54M	891
Jul 2, 2021	Sell	2,558	$575.00	$1.47M	891