Marcio Souza

CIK 1707657 · Chief Executive Officer · last filed 2026-05-19

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$25.54M

Companies

3

Total Filings

41

Lifetime Open-Market Net

-$5.06M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
PRAX Chief Executive Officer 79,616 $266.58 $21.22M $371.8K 27 2026-05-19
Spyre Therapeutics, Inc. (AGLE) Delisted Director 90,000 $12.01 $1.08M $50.5K 3 2022-08-25
PTCT Chief Operating Officer 57,466 $75.14 $4.32M -$5.48M 11 2020-02-12

Recent Filings · Page 3 of 5

41 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2022-06-24 PRAX Grant (A) $0 EDGAR
2022-06-09 PRAX Buy (P) +27,000 $49.9K EDGAR
2022-06-09 Spyre Therapeutics, Inc. (AGLE) Delisted Grant (A) $0 EDGAR
2022-05-18 PRAX Grant (A) +1,392 $12.2K EDGAR
2022-01-11 PRAX Grant (A) +74,000 $0 EDGAR
2021-08-19 PRAX Buy (P) +9,542 $150.7K EDGAR
2021-06-22 Spyre Therapeutics, Inc. (AGLE) Delisted Grant (A) $0 EDGAR
2021-02-17 PRAX Grant (A) +52,800 $0 EDGAR
2020-11-10 PRAX Buy (P) +3,846 $100.3K EDGAR
2020-10-20 PRAX Conv (C) +20,604 $0 EDGAR
Showing 2130 of 41
Page 3 of 5
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.