Marcio Souza

Companies

• Praxis Precision Medicines, Inc.Board member Oct 20, 2020 to now¹
• Praxis Precision Medicines, Inc.Chief executive officer Oct 15, 2020 to now²
• Aeglea BioTherapeuticsBoard member Jun 22, 2021 to Aug 25, 2022³
• Praxis Precision Medicines, Inc.President Jan 11, 2022 to Jan 11, 2022⁴
• PTC TherapeuticsChief operating officer Jun 2, 2017 to Feb 12, 2020⁵
• ClearPoint Neuro, Inc.Board member May 17, 2019 to May 17, 2019⁶

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• PPPraxis Precision Medicines, Inc. PRAX56,495 shares⁷$14.7M at $259.50Jul 8, 2026
• ABAeglea BioTherapeutics SYRE90,000 shares⁸$7.7M at $85.57Aug 25, 2022

As of each latest filing. The line shows shares held over time.

Recent filings

• Jul 8, 2026Gift 2,600 shares of Praxis Precision Medicines, Inc.⁷
• Jul 8, 2026Gift 20,521 shares of Praxis Precision Medicines, Inc.⁷
• May 14, 2026Granted 126 shares at $167.94 of Praxis Precision Medicines, Inc.⁹
• Jan 10, 2026Shares withheld for tax 4,252 shares at $288.45 of Praxis Precision Medicines, Inc.¹⁰
• Jan 8, 2026Granted 27,640 shares of Praxis Precision Medicines, Inc.¹⁰
• Jan 7, 2026Shares withheld for tax 405 shares at $292.63 of Praxis Precision Medicines, Inc.¹¹
• Dec 30, 2025Gift 400 shares of Praxis Precision Medicines, Inc.¹²
• May 14, 2025Granted 348 shares at $31.54 of Praxis Precision Medicines, Inc.¹³
• Feb 12, 2025Shares withheld for tax 401 shares at $85.40 of Praxis Precision Medicines, Inc.¹⁴
• Jan 10, 2025Granted 37,500 shares of Praxis Precision Medicines, Inc.¹⁵
• Jan 7, 2025Shares withheld for tax 434 shares at $77.52 of Praxis Precision Medicines, Inc.¹⁶
• May 14, 2024Granted 1,718 shares at $12.37 of Praxis Precision Medicines, Inc.¹⁷
• Feb 12, 2024Shares withheld for tax 271 shares at $44.65 of Praxis Precision Medicines, Inc.¹⁸
• Jan 7, 2024Shares withheld for tax 418 shares at $25.19 of Praxis Precision Medicines, Inc.¹⁹
• Jun 27, 2023Bought 10,000 shares at $1.06 of Praxis Precision Medicines, Inc.²⁰
• May 12, 2023Granted 11,687 shares at $0.88 of Praxis Precision Medicines, Inc.²¹
• Mar 23, 2023Bought 35,002 shares at $0.86 of Praxis Precision Medicines, Inc.²²
• Mar 23, 2023Bought 35,000 shares at $0.86 of Praxis Precision Medicines, Inc.²²
• Nov 14, 2022Granted 2,115 shares at $1.81 of Praxis Precision Medicines, Inc.²³
• Aug 25, 2022Bought 90,000 shares at $0.56 of Aeglea BioTherapeutics⁸
• Jun 8, 2022Bought 27,000 shares at $1.85 of Praxis Precision Medicines, Inc.²⁴
• May 13, 2022Granted 1,392 shares at $8.80 of Praxis Precision Medicines, Inc.²⁵
• Jan 7, 2022Granted 74,000 shares of Praxis Precision Medicines, Inc.²⁶