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.
Praxis Precision Medicines Inc.
Director · Chief Executive Officer
Chief executive roles
Praxis Precision Medicines Inc.
· Chief Executive Officer
Dates unknown
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 |
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