Briggs Morrison

SNDX

Briggs Morrison serves as director at Syndax Pharmaceuticals, Inc. (SNDX). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

2 trades

$495.1K

Total Sells

15 trades

$26.44M

Net Position

Net Seller

$25.95M

Companies Traded

ARVN, SNDX

Active Period

Sep 2021 – Mar 2026

17 total trades

Most Recent

Buy ARVN

Mar 9, 2026 · $268.1K

Briggs Morrison's Insider Trading at Syndax Pharmaceuticals, Inc. (SNDX)

Buys

0 · $0.00

Sells

13 · $23.68M

Total Shares Bought

Total Shares Sold

1,095,324

SNDX Price Chart

Loading chart...

Date	Type	Shares	Avg Price	Value	Shares After
Aug 10, 2023	Sell	52,855	$18.27	$965.4K	17,836
Jul 11, 2023	Sell	52,855	$20.40	$1.08M	17,836
Jun 9, 2023	Sell	52,855	$21.18	$1.12M	46,109
May 10, 2023	Sell	52,855	$21.41	$1.13M	17,836
Apr 12, 2023	Sell	52,855	$19.53	$1.03M	17,836
Mar 14, 2023	Sell	52,854	$22.53	$1.19M	17,836
Feb 8, 2023	Sell	52,854	$26.83	$1.42M	17,836
Sep 21, 2022	Sell	173,988	$23.11	$4.02M	17,836
Sep 16, 2022	Sell	279,420	$23.64	$6.60M	17,836
Jul 5, 2022	Sell	62,292	$19.00	$1.18M	17,836
Apr 5, 2022	Sell	104,173	$17.48	$1.82M	42,336
Dec 20, 2021	Sell	35,156	$20.00	$703.1K	48,336
Sep 21, 2021	Sell	70,312	$20.07	$1.41M	48,336