Transactions
18
Insider / Praxis Precision Medicines, Inc.
DeSimone Jill
Director at Praxis Precision Medicines, Inc.
DeSimone Jill, Director at Praxis Precision Medicines, Inc., has disclosed 18 transactions in PRAX since June 12, 2026: 0 purchases (0 open-market buys) and 12 sales, worth about $4.4M at the reported prices. The latest was filed June 26, 2026, 2 days after the trade.
Open-market buys
0
Sales
12
Avg. disclosure lag
2.0d
Trading in charts
Trade timeline
When does this person trade, how big, and in which direction? Every trade in the last 12 months.
Bought (above the line)Sold (below the line)Other transaction
In the last 12 months DeSimone Jill made no purchases and 12 sales worth $3.6M, plus 6 other transactions. Dot size is the dollar amount.
Portfolio mix
Which stocks does this person trade most? Tile size is dollars traded, all time on record.
DeSimone Jill has traded 1 stock on record; the largest by dollars is PRAX.
Reporting lag
Does this person report on time? One bar per filing against the Form 4 deadline.
On timeLate
0 of 2 filings on record were reported after the Form 4 deadline (two business days, counted here as 4 calendar days).
What kind of transactions
Most Form 4 rows are pay arriving or tax being withheld, not a decision to buy or sell. Only code P is an open-market purchase and code S an open-market sale. What each code means: Form 4 transaction codes.
| Code | Meaning | Rows | Shares | Value |
|---|---|---|---|---|
| S | Open-market sale | 12 | 11,600 | $3.6M |
| M | Option exercise or conversion | 4 | 23,200 | $826K |
| A | Grant or award | 2 | 2,019 | — |
| Year | Rows | Bought | Sold |
|---|---|---|---|
| 2026 | 18 | 0 | 12 · $3.6M |
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source | Share |
|---|---|---|---|---|---|---|---|---|---|---|
| PRAX | Option / conversion M | June 24, 2026 | June 26, 2026 | 2d | 3,034 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| PRAX | Option / conversion M | June 24, 2026 | June 26, 2026 | 2d | 8,566 | — | — | 10b5-1 planderivative | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 837 | $316 | $264K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 1,279 | $315 | $403K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 504 | $314 | $158K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 1,004 | $313 | $314K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 2,854 | $312 | $890K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 1,750 | $311 | $544K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 999 | $309 | $309K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 1,240 | $308 | $382K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 683 | $307 | $210K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 320 | $305 | $98K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 120 | $303 | $36K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Sell S | June 24, 2026 | June 26, 2026 | 2d | 10 | $301 | $3,014 | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Option / conversion M | June 24, 2026 | June 26, 2026 | 2d | 3,034 | $147 | $447K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Option / conversion M | June 24, 2026 | June 26, 2026 | 2d | 8,566 | $44 | $379K | 10b5-1 plan | Form 4 ↗ | |
| PRAX | Other A | June 10, 2026 | June 12, 2026 | 2d | 648 | — | — | derivative | Form 4 ↗ | |
| PRAX | Other A | June 10, 2026 | June 12, 2026 | 2d | 1,371 | — | — | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| June 26, 2026 | Form 4 | 0001930479-26-000003 | 16 | published | EDGAR ↗ |
| June 12, 2026 | Form 4 | 0001689548-26-000061 | 2 | published | EDGAR ↗ |
Other insiders at Praxis Precision Medicines, Inc.
- Mastrocola Lauren Principal Accounting Officer 22 rows
- Nemiroff Alex General Counsel and Secretary 20 rows
- Adage Capital Management, L.P. Insider 10 rows
- Souza Marcio Chief Executive Officer 8 rows
- Kelly Timothy Edwin Chief Financial Officer 7 rows
- Norden Gregory Director 7 rows
- Arbuckle Stuart A Director 5 rows
- KINDLER JEFFREY B Director 5 rows
- Sniecinski Megan Chief Operating Officer 5 rows
- Chodakewitz Jeffrey Director 2 rows
Everyone on file, with contracts and lobbying under the company's name: Praxis Precision Medicines, Inc..
Guides for this page
- What is SEC Form 4? Who files: officers, directors and owners of more than 10% of a class of the company's shares.
- Form 4 transaction codes P = purchase. S = sale. These are the two market trades.
- Insider buying vs insider selling Selling outweighs buying by a wide margin in normal times.
- Rule 10b5-1 trading plans The plan must be set up when the insider has no important non-public information.
- Options and derivatives on Form 4 Table I = shares. Table II = options and other derivatives.
Sources and method
| Source | Filings | Rows | First filed | Newest filed | Read the originals |
|---|---|---|---|---|---|
| SEC EDGAR, Form 4 | 2 | 18 | June 12, 2026 | June 26, 2026 | Form 4 list on EDGAR |
Site built October 22, 2026. Every row in the tables above links to its own filing. To quote a figure, use the Cite button at the top of the page; see how to cite and reuse.
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.