Praxis Precision Medicines, Inc. (PRAX)
Nasdaq: PRAX · Pharmaceutical Preparations · Boston, MA · filing with the SEC since 2016
Who runs Praxis Precision Medicines, Inc.
Officers and directors as they report to the SEC on Forms 3, 4 and 5, named as filedChief executive, as filed
Souza Marcio
Chief Executive Officer. First filing Oct 2020, latest Jul 8, 2026, 5 filings in all.
Officers reporting now
5
of 13 people with a filing in the last fifteen months
Directors reporting now
8
19 people on the record since 2020
Officerssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Title as filed | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Souza Marcio | Chief Executive Officer | Oct 2020 | Jul 8, 2026 | none |
| Kelly Timothy Edwin | Chief Financial Officer | May 2021 | May 19, 2026 | none |
| Sniecinski Megan | Chief Operating Officer | Jan 2026 | May 19, 2026 | none |
| Mastrocola Lauren | Principal Accounting Officer | Oct 2020 | May 19, 2026 | 2 · $2.6M |
| Nemiroff Alex | General Counsel and Secretary | Oct 2020 | May 19, 2026 | 4 · $4.9M |
Directorssales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Desimone Jill | director | May 2022 | Jun 26, 2026 | 12 · $3.6M |
| Arbuckle Stuart A | director | Jan 2026 | Jun 12, 2026 | none |
| Chodakewitz Jeffrey | director | Apr 2021 | Jun 12, 2026 | none |
| Cudkowicz Merit Ester | director | Apr 2021 | Jun 12, 2026 | none |
| Kindler Jeffrey B | director | Jan 2026 | Jun 12, 2026 | none |
| Mitchell Dean J | director | Oct 2020 | Jun 12, 2026 | none |
| Norden Gregory | director | Oct 2020 | Jun 12, 2026 | none |
| Young William D | director | Oct 2020 | Jun 12, 2026 | none |
Owners of more than 10% of a classsales are open-market, Sep 30, 2025 to Sep 30, 2026
| Name | Role | First filing | Latest filing | Sales, 12 months |
|---|---|---|---|---|
| Adage Capital Management, L.P. | 10% owner | Aug 2025 | Oct 17, 2025 | none |
| Atchinson Robert | 10% owner | Aug 2025 | Oct 17, 2025 | none |
| Gross Phillip | 10% owner | Aug 2025 | Oct 17, 2025 | 10 · $33.2M |
Earlier names on the record19, newest filing first
Sweeny Nicole · officer · last filing Feb 2023Ravina Bernard · officer · last filing Jun 2022Vitorovic Stefan · director · last filing May 2022Blackstone Alternative Solutions L.L.C. · 10% owner · last filing Oct 2021Blackstone Group Inc · 10% owner · last filing Oct 2021Blackstone Group Management L.L.C. · 10% owner · last filing Oct 2021Blackstone Holdings I L.P. · 10% owner · last filing Oct 2021Blackstone Holdings I/ii Gp L.L.C. · 10% owner · last filing Oct 2021Blackstone Holdings II L.P. · 10% owner · last filing Oct 2021Blackstone Strategic Opportunity Associates L.L.C. · 10% owner · last filing Oct 2021Bsof Parallel Master Fund L.P. · 10% owner · last filing Oct 2021Schwarzman Stephen A · 10% owner · last filing Oct 2021Clarus Lifesciences III, L.P. · 10% owner · last filing May 2021Clarus Ventures III Gp, L.P. · 10% owner · last filing May 2021Blackstone Clarus III L.L.C. · 10% owner · last filing Oct 2020Novo Holdings A/s · 10% owner · last filing Oct 2020Chaffee Stuart · officer · last filing Oct 2020Galakatos Nicholas · director · last filing Oct 2020Reddy Kiran · director · last filing Oct 2020
A person is listed as reporting now after a filing in the last fifteen months. The record shows when someone last filed; it does not say why they stopped. Each name links to the filings on sec.gov.