Updated Jul 16, 2026 · Last SEC filing 2026-07-08
Praxis Precision Medicines, Inc. (PRAX) has filed 15 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-08. 8 Form 8-K material event filings were reported by PRAX in the last 90 days. 1 Form 144 notices of proposed sale were filed for PRAX stock. InsiderAlpha tracks every PRAX SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Pharmaceutical Preparations (SIC 2834) |
|---|---|
| SEC CIK | 0001689548 |
| Form 4 filings (90d) | 15 |
|---|---|
| Form 8-K filings (90d) | 8 |
| Form 144 notices (90d) | 1 |
| Latest Form 4 filing | 2026-07-08 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Souza Marcio | Chief Executive Officer | G — Bona-fide gift | 20.5K | $0.00 | — | SEC | |
| Souza Marcio | Chief Executive Officer | G — Bona-fide gift | 2.6K | $0.00 | — | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 837 | $315.70 | $264K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 999 | $309.38 | $309K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 2.9K | $311.91 | $890K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 1.3K | $314.90 | $403K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 120 | $303.13 | $36K | SEC | |
| DeSimone Jill | Director | M — Option exercise | 8.6K | $44.25 | $379K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 10 | $301.44 | $3K | SEC | |
| DeSimone Jill | Director | M — Option exercise | 3.0K | $147.30 | $447K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 320 | $305.31 | $98K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 683 | $306.77 | $210K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 1.0K | $312.83 | $314K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 504 | $313.66 | $158K | SEC | |
| DeSimone Jill | Director | S — Open-market sale | 1.2K | $308.24 | $382K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Praxis Precision Medicines, Inc. (PRAX). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| DeSimone Jill | 18 | $4.44M |
| Souza Marcio | 3 | $21K |
| Norden Gregory | 2 | — |
| YOUNG WILLIAM D | 2 | — |
| Arbuckle Stuart A | 2 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in PRAX insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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