Marcio Souza
Chief Executive Officer at Praxis Precision Medicines Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Praxis Precision Medicines Inc., 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Praxis Precision Medicines Inc. June 10, 202699.5%
-
Praxis Precision Medicines Inc. June 12, 202382.8%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jul 8, 2026 | Praxis Precision Medicines Inc. | Gift | −20,521 | — | — |
| Jul 8, 2026 | Praxis Precision Medicines Inc. | Gift | −2,600 | — | — |
| May 14, 2026 | Praxis Precision Medicines Inc. | Grant or award | +126 | $167.94 | $21,160 |
| Jan 10, 2026 | Praxis Precision Medicines Inc. | Shares withheld for tax | −4,252 | $288.45 | $1,226,489 |
| Jan 8, 2026 | Praxis Precision Medicines Inc. | Grant or award | +27,640 | — | — |
| Jan 7, 2026 | Praxis Precision Medicines Inc. | Shares withheld for tax | −405 | $292.63 | $118,515 |
| Dec 30, 2025 | Praxis Precision Medicines Inc. | Gift | −400 | — | — |
| May 14, 2025 | Praxis Precision Medicines Inc. | Grant or award | +348 | $31.54 | $10,976 |
| Feb 12, 2025 | Praxis Precision Medicines Inc. | Shares withheld for tax | −401 | $85.40 | $34,245 |
| Jan 10, 2025 | Praxis Precision Medicines Inc. | Grant or award | +37,500 | — | — |
| Jan 7, 2025 | Praxis Precision Medicines Inc. | Shares withheld for tax | −434 | $77.52 | $33,644 |
| May 14, 2024 | Praxis Precision Medicines Inc. | Grant or award | +1,718 | $12.37 | $21,252 |
| Feb 12, 2024 | Praxis Precision Medicines Inc. | Shares withheld for tax | −271 | $44.65 | $12,100 |
| Jan 7, 2024 | Praxis Precision Medicines Inc. | Shares withheld for tax | −418 | $25.19 | $10,529 |
| Jun 27, 2023 | Praxis Precision Medicines Inc. | Open-market purchase | +10,000 | $1.06 | $10,600 |
Questions about Marcio Souza
What boards is Marcio Souza on?
Marcio Souza sits on the board of Praxis Precision Medicines Inc.
What company is Marcio Souza the CEO of?
Marcio Souza is Chief Executive Officer of Praxis Precision Medicines Inc.
How long has Marcio Souza served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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