Marcio Souza

Marcio Souza serves as Chief Executive Officer at Praxis Precision Medicines, Inc. (PRAX). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

5 trades

$322.0K

Total Sells

2 trades

$1.35M

Net Position

Net Seller

$1.02M

Companies Traded

2

PRAX, SYRE

Active Period

Aug 2021 – Jan 2026

7 total trades

Most Recent

Sell PRAX

Jan 8, 2026 · $1.23M

Marcio Souza's Insider Trading at Praxis Precision Medicines, Inc. (PRAX)

Buys

4 · $271.5K

Sells

2 · $1.35M

Total Shares Bought

116,543

Total Shares Sold

4,657

PRAX Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Jan 8, 2026	Sell	4,252	$288.45	$1.23M	0
Jan 7, 2026	Sell	405	$292.63	$118.5K	0
Jun 27, 2023	Buy	10,000	$1.06	$10.6K	45,002
Mar 27, 2023	Buy	70,001	$0.86	$60.4K	226,299
Jun 9, 2022	Buy	27,000	$1.85	$49.9K	189,184
Aug 19, 2021	Buy	9,542	$15.79	$150.7K	86,792

Marcio Souza's Insider Trading at Spyre Therapeutics, Inc. (SYRE)

Buys

1 · $50.5K

Sells

0 · $0.00

Total Shares Bought

90,000

Total Shares Sold

0

SYRE Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Aug 25, 2022	Buy	90,000	$0.56	$50.5K	90,000

Related Insiders

Scott L Burrows

officer: Chief Financial Officer

SYRESell · Jun 3, 2026

Sheldon Sloan

officer: Chief Medical Officer

SYRESell · Jun 3, 2026

Cameron Turtle

director, officer: Chief Executive Officer

SYRESell · Jun 3, 2026

HENDERSON MICHAEL THOMAS

director

SYRESell · May 8, 2026

Lauren Mastrocola

Principal Accounting Officer

PRAXSell · Jan 12, 2026

Alex Nemiroff

General Counsel and Secretary

PRAXSell · Jan 12, 2026

Megan Sniecinski

Chief Operating Officer

PRAXSell · Jan 12, 2026

Timothy Edwin Kelly

Chief Financial Officer

PRAXSell · Jan 12, 2026

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