Praxis Precision Medicines, Inc. insider trading
Every open-market purchase and sale by Praxis Precision Medicines, Inc.'s officers, directors and largest shareholders since November 4, 2021, and what the share price did next.
| Date | Insider | Trade | Shares | Price | Value | 1M after | 3M after | 6M after |
|---|
Does following Praxis Precision Medicines, Inc.’s insiders pay?
From November 10, 2020 to November 21, 2025, 13 insiders reported 11 open-market purchases and 12 sales not made under a pre-set plan in Praxis Precision Medicines, Inc. Twelve months after each purchase was reported, the shares were −71.9% against the S&P 500 on average (median −74.0%), over 3 purchases with a full year of prices; 0% beat the index. After sales, the shares moved −23.2% against the index over 12 months (a negative figure means selling was the right call). That rests on fewer than 20 purchases, too few to read much into. Buying each purchase the day after it was reported, an equal amount each, held 12 months or until that insider reported a sale, would have turned $10,000 on November 11, 2020 into $1,115 by November 2, 2026, −30.9% a year. It held shares 30% of the time; the S&P 500 on those same days, with Treasury bills otherwise, made $13,591 (+5.3% a year), and held throughout $22,996 (+15.0%).
| Insider | Role | Purchases | 12 months after their purchases | Beat the S&P 500 | Sales | 12 months after their sales | Latest report |
|---|---|---|---|---|---|---|---|
| Souza Marcio | Chief Executive Officer | 5 | −70.8% (2) | 0% | 0 | — | June 27, 2023 |
| Nemiroff Alex | General Counsel and Secretary | 1 | — | — | 2 | +117.2% (1) | November 21, 2025 |
| Blackstone Holdings I L.P. | 10% owner | 0 | — | — | 2 | −68.9% (2) | August 25, 2021 |
| Kelly Timothy Edwin | Chief Financial Officer | 2 | −74.0% (1) | 0% | 0 | — | June 13, 2022 |
| Mastrocola Lauren | Principal Accounting Officer | 0 | — | — | 2 | +117.2% (1) | November 21, 2025 |
| Mitchell Dean J | Director | 2 | — | — | 0 | — | March 27, 2023 |
| Blackstone Group Management L.L.C. | 10% owner | 0 | — | — | 1 | −72.4% (1) | August 3, 2021 |
| Blackstone Inc. | 10% owner | 0 | — | — | 1 | −75.4% (1) | October 5, 2021 |
| Blackstone Strategic Opportunity Associates L.L.C. | 10% owner | 0 | — | — | 1 | −73.2% (1) | August 20, 2021 |
| Bsof Parallel Master Fund L.P. | 10% owner | 0 | — | — | 1 | −73.0% (1) | October 8, 2021 |
| Desimone Jill | Director | 1 | — | — | 0 | — | October 10, 2023 |
| Gross Phillip | 10% owner | 0 | — | — | 1 | +30.1% (1) | October 17, 2025 |
| Schwarzman Stephen A | 10% owner | 0 | — | — | 1 | −65.0% (1) | August 13, 2021 |
When several insiders traded Praxis Precision Medicines, Inc.
Months when 2 or more insiders became net buyers, or 3 or more net sellers, of Praxis Precision Medicines, Inc. in reports dated in the 91 days before the month end, and how the stock did against the S&P 500 from that month end. After 2 selling crowds, −6.1%. One company's history is too short to judge by; the test across every company is the better guide.
| Month | Crowd | 3 months on, vs S&P 500 | 6 months | 12 months |
|---|---|---|---|---|
| November 28, 2025 | 3 selling | +62.1% | +19.6% | not yet |
| August 31, 2021 | 4 selling | −15.1% | −31.9% | −73.1% |
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