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BETR ▼ sold $13K · Tuffin Paula filed 2d agoBETR ▼ sold $14K · Nicholas J. Calamari filed 2d agoFBK ▲ bought $716K · INGRAM ORRIN H II filed 2d agoFBK ▲ bought $821K · INGRAM ORRIN H II filed 2d agoBEN ▼ sold $5.0M · FRANKLIN TEMPLETON INC filed 2d agoNAD ▼ sold $338K · Robert Young L filed 3d agoWSBC ▼ sold $15K · Rep. Michael A. Rulli filed 4d agoGOOG ▼ sold $100K · Rep. Michael A. Rulli filed 4d agoWMT ▼ sold $100K · Rep. Jonathan L. Jackson filed 4d agoVSAT ▼ sold $100K · Rep. Jonathan L. Jackson filed 4d agoTYG ▼ sold $15K · Rep. Jonathan L. Jackson filed 4d agoGH ▲ bought $50K · Rep. Jonathan L. Jackson filed 4d agoEL ▲ bought $100K · Rep. Jonathan L. Jackson filed 4d agoDDOG ▲ bought $100K · Rep. Jonathan L. Jackson filed 4d agoCPRT ▼ sold $553K · Morefield Diane M filed 4d agoPTON ▼ sold $154K · Kirol Charles Peter filed 4d agoEME ▲ bought $1K · MCEVOY M KEVIN filed 4d agoEME ▲ bought $826 · MCEVOY M KEVIN filed 4d ago

Stock / equity

PRAX Praxis Precision Medicines, Inc.

Company
Praxis Precision Medicines, Inc.
Security
Equity
Size, estimated from filings
Mid cap ($2B – $10B)
Insiders on record
14
Members of Congress
1
Latest trade on record
September 29, 2026

PRAX (Praxis Precision Medicines, Inc.) has 100 disclosed insider transactions from 13 insiders in the last 12 months (0 open-market buys, 31 sales, about $18.0M at reported prices) and 2 congressional trades from 1 member of Congress. The most recent disclosure was filed October 12, 2026.

Last updated October 12, 2026 · Sources: SEC EDGAR Form 4; House Clerk and Senate eFD PTRs

Insider txns (12m)
100
Open-market buys / sales
0 / 31
Congress trades (12m)
2
Distinct filers (12m)
14

Share price

Price and chart by TradingView for Praxis Precision Medicines, Inc.. US share prices here are delayed, not real-time. The trade records on this page come from government filings, not from this chart.

PRAX in charts

Who is trading this stock

Which people account for the buying and selling over the last 12 months?

BoughtSold

7 people account for the disclosed buying and selling in PRAX over the last 12 months; the most active is Nemiroff Alex with $5.4M.

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Prices insiders traded at

What price did insiders buy and sell at? Each marker is one open-market trade at the share price reported on its Form 4.

▲ Bought▼ SoldAverage reported price that day
$0$100$200$300$400Oct 2025Jun 2026
$0$100$200$300$400Oct 2025Jun 2026

Insiders reported 28 open-market trades in PRAX since Oct 16, 2025, at prices from $90.00 to $316; the most recent was a sale at $301 on Jun 24, 2026. These are the prices on the filings, not adjusted for stock splits, and not a market price series.

Insider holdings over time

Is an insider building or unwinding a position? Shares held directly after each filing.

Souza MarcioMastrocola Lauren
039K77K014K2025-11-212026-07-08

Souza Marcio reported 0 shares held after the latest filing, against 2,600 at the first on record.

Lobbying spend by quarter

How much has Praxis Precision Medicines, Inc. reported spending on federal lobbying?

Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26Q4 26
Q1 25Q2 25Q3 25Q4 25Q1 26Q2 26Q3 26Q4 26

Praxis Precision Medicines, Inc. reported $320K in lobbying over the last eight quarters, from filings matched by exact company name.

Insiders trading PRAX

Everyone who filed a Form 4 for this ticker, by number of rows on record. "Bought" and "sold" count open-market purchases (code P) and sales only; awards, option exercises and shares withheld for tax are in the row count but not in those two columns.

InsiderRoleRowsBoughtSoldValue boughtValue soldLatest
Mastrocola LaurenPrincipal Accounting Officer2205—$2.8MMay 14, 2026
Nemiroff AlexGeneral Counsel and Secretary2007—$5.4MMay 14, 2026
DeSimone JillDirector18012—$3.6MJune 24, 2026
Adage Capital Management, L.P.Insider10010—$33.2MOctober 16, 2025
Souza MarcioChief Executive Officer802—$1.3MJuly 8, 2026
Kelly Timothy EdwinChief Financial Officer703—$686KMay 14, 2026
Arbuckle Stuart ADirector500——June 10, 2026
KINDLER JEFFREY BDirector500——June 10, 2026
Sniecinski MeganChief Operating Officer502—$558KMay 14, 2026
Chodakewitz JeffreyDirector200——June 10, 2026
Cudkowicz Merit EsterDirector200——June 10, 2026
MITCHELL DEAN JDirector200——June 10, 2026
Norden GregoryDirector200——June 10, 2026
YOUNG WILLIAM DDirector200——June 10, 2026
What kind of transactions these are 5 Form 4 codes
CodeMeaningRowsSharesValue at reported prices
AGrant or award38126,397$103K
MOption exercise or conversion28100,660$3.5M
SOpen-market sale28364,240$44.3M
FShares withheld for tax1311,566$3.3M
GGift323,521—

What each code means: Form 4 transaction codes.

Members of Congress trading PRAX

Members whose periodic transaction reports name this ticker. Amounts are the sums of the ranges as filed.

MemberSeatTradesBoughtSoldRange as filedLatest
Gilbert Ray Cisneros, Jr.Representative (CA, District 31), Democrat220$2,002–$30KSeptember 29, 2026

Download CSV112 rows · 42 KB · insider and congressional rows for this ticker · all downloads

Insider transactions

FilerSideTrade dateDisclosedLagSharesPriceValueFlagsSourceShare
Souza MarcioOther GJuly 8, 2026July 8, 20260d2,600——indirectForm 4 ↗
Souza MarcioOther GJuly 8, 2026July 8, 20260d20,521——Form 4 ↗
DeSimone JillOption / conversion MJune 24, 2026June 26, 20262d3,034——10b5-1 planderivativeForm 4 ↗
DeSimone JillOption / conversion MJune 24, 2026June 26, 20262d8,566——10b5-1 planderivativeForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d837$316$264K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d1,279$315$403K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d504$314$158K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d1,004$313$314K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d2,854$312$890K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d1,750$311$544K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d999$309$309K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d1,240$308$382K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d683$307$210K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d320$305$98K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d120$303$36K10b5-1 planForm 4 ↗
DeSimone JillSell SJune 24, 2026June 26, 20262d10$301$3,01410b5-1 planForm 4 ↗
DeSimone JillOption / conversion MJune 24, 2026June 26, 20262d3,034$147$447K10b5-1 planForm 4 ↗
DeSimone JillOption / conversion MJune 24, 2026June 26, 20262d8,566$44$379K10b5-1 planForm 4 ↗
Arbuckle Stuart AOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
Arbuckle Stuart AOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
Chodakewitz JeffreyOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
Chodakewitz JeffreyOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
YOUNG WILLIAM DOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
YOUNG WILLIAM DOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
DeSimone JillOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
DeSimone JillOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
Cudkowicz Merit EsterOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
Cudkowicz Merit EsterOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
MITCHELL DEAN JOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
MITCHELL DEAN JOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
KINDLER JEFFREY BOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
KINDLER JEFFREY BOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
Norden GregoryOther AJune 10, 2026June 12, 20262d648——derivativeForm 4 ↗
Norden GregoryOther AJune 10, 2026June 12, 20262d1,371——Form 4 ↗
Mastrocola LaurenOther AMay 14, 2026May 19, 20265d127$168$21KlateForm 4 ↗
Nemiroff AlexOther AMay 14, 2026May 19, 20265d78$168$13KlateForm 4 ↗
Kelly Timothy EdwinOther AMay 14, 2026May 19, 20265d121$168$20KlateForm 4 ↗
Sniecinski MeganOther AMay 14, 2026May 19, 20265d89$168$15KlateForm 4 ↗
Souza MarcioOther AMay 14, 2026May 19, 20265d126$168$21KlateForm 4 ↗
Arbuckle Stuart AOther AFebruary 6, 2026February 10, 20264d224——derivativeForm 4 ↗
Arbuckle Stuart AOther AFebruary 6, 2026February 10, 20264d478——Form 4 ↗
Arbuckle Stuart AOther AFebruary 6, 2026February 10, 20264d688——Form 4 ↗
KINDLER JEFFREY BOther AFebruary 6, 2026February 10, 20264d224——derivativeForm 4 ↗
KINDLER JEFFREY BOther AFebruary 6, 2026February 10, 20264d478——Form 4 ↗
KINDLER JEFFREY BOther AFebruary 6, 2026February 10, 20264d688——Form 4 ↗
Mastrocola LaurenSell FJanuary 12, 2026January 13, 20261d344$276$95KForm 4 ↗
Sniecinski MeganSell FJanuary 12, 2026January 13, 20261d885$276$244KForm 4 ↗
Nemiroff AlexSell FJanuary 12, 2026January 13, 20261d768$276$212KForm 4 ↗
Kelly Timothy EdwinSell FJanuary 12, 2026January 13, 20261d943$276$260KForm 4 ↗
Mastrocola LaurenOther AJanuary 8, 2026January 12, 20264d7,500——derivativeForm 4 ↗
Mastrocola LaurenSell FJanuary 10, 2026January 12, 20262d367$288$106KForm 4 ↗
Mastrocola LaurenOther AJanuary 8, 2026January 12, 20264d3,750——Form 4 ↗
Sniecinski MeganOther AJanuary 8, 2026January 12, 20264d7,700——derivativeForm 4 ↗
Sniecinski MeganSell FJanuary 10, 2026January 12, 20262d1,087$288$314KForm 4 ↗
Sniecinski MeganOther AJanuary 8, 2026January 12, 20264d9,625——Form 4 ↗
Nemiroff AlexOther AJanuary 8, 2026January 12, 20264d5,500——derivativeForm 4 ↗
Nemiroff AlexSell FJanuary 10, 2026January 12, 20262d917$288$265KForm 4 ↗
Nemiroff AlexOther AJanuary 8, 2026January 12, 20264d6,875——Form 4 ↗
Kelly Timothy EdwinOther AJanuary 8, 2026January 12, 20264d7,040——derivativeForm 4 ↗
Kelly Timothy EdwinSell FJanuary 10, 2026January 12, 20262d1,335$288$385KForm 4 ↗
Kelly Timothy EdwinOther AJanuary 8, 2026January 12, 20264d8,800——Form 4 ↗
Souza MarcioOther AJanuary 8, 2026January 12, 20264d22,110——derivativeForm 4 ↗
Souza MarcioSell FJanuary 10, 2026January 12, 20262d4,252$288$1.2MForm 4 ↗
Souza MarcioOther AJanuary 8, 2026January 12, 20264d27,640——Form 4 ↗
Mastrocola LaurenSell FJanuary 7, 2026January 9, 20262d35$293$10KForm 4 ↗
Nemiroff AlexSell FJanuary 7, 2026January 9, 20262d89$293$26KForm 4 ↗
Kelly Timothy EdwinSell FJanuary 7, 2026January 9, 20262d139$293$41KForm 4 ↗
Souza MarcioSell FJanuary 7, 2026January 9, 20262d405$293$119KForm 4 ↗
Souza MarcioOther GDecember 30, 2025December 31, 20251d400——indirectForm 4 ↗
Kelly Timothy EdwinOther ANovember 14, 2025November 21, 20257d384$32$12KlateForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d9,100——derivativeForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d5,652——derivativeForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d2,434——derivativeForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d6,230——derivativeForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d1,714——derivativeForm 4 ↗
Nemiroff AlexSell SNovember 20, 2025November 21, 20251d9,100$194$1.8MForm 4 ↗
Nemiroff AlexSell SNovember 20, 2025November 21, 20251d977$193$189KForm 4 ↗
Nemiroff AlexSell SNovember 20, 2025November 21, 20251d13,339$193$2.6MForm 4 ↗
Nemiroff AlexSell SNovember 20, 2025November 21, 20251d1,714$191$327KForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d9,100$57$518KForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d5,652$44$251KForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d2,434$44$108KForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d6,230$134$833KForm 4 ↗
Nemiroff AlexOption / conversion MNovember 20, 2025November 21, 20251d1,714$84$144KForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d5,250——derivativeForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d2,351——derivativeForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d207——derivativeForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d2,680——derivativeForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d1,557——derivativeForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d508——derivativeForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d1,047——derivativeForm 4 ↗
Mastrocola LaurenSell SNovember 20, 2025November 21, 20251d2,145$193$413KForm 4 ↗
Mastrocola LaurenSell SNovember 20, 2025November 21, 20251d11,455$192$2.2MForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d5,250$57$299KForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d2,351$44$104KForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d207$44$9,191Form 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d2,680$43$116KForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d1,557$134$208KForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d508$84$43KForm 4 ↗
Mastrocola LaurenOption / conversion MNovember 20, 2025November 21, 20251d1,047$50$52KForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d19,198$140$2.7MindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d308$132$41KindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d487$132$64KindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d1,661$130$216KindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d250,000$104$26.1MindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d27,287$101$2.8MindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d559$100$56KindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d1,363$92$125KindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d447$91$41KindirectForm 4 ↗
Adage Capital Management, L.P.Sell SOctober 16, 2025October 17, 20251d12,600$90$1.1MindirectForm 4 ↗

Congressional trades

FilerSideTrade dateDisclosedLagSharesPriceValueFlagsSourceShare
Gilbert Ray Cisneros, Jr.BuySeptember 29, 2026October 12, 202613d——$1,001–$15KHouse PTR ↗
Gilbert Ray Cisneros, Jr.BuyJuly 30, 2026September 4, 202636d——$1,001–$15KHouse PTR ↗

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Guides for this page

Sources and method

Official sources behind this page
SourceFilingsRowsFirst filedNewest filedRead the originals
House Clerk, periodic transaction reports22September 4, 2026October 12, 2026House Clerk search
SEC EDGAR, Form 435110October 17, 2025July 8, 2026Form 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.

Insider rows are Form 4 filings for this issuer from SEC EDGAR; congressional rows are periodic transaction reports parsed from the House Clerk and the Senate eFD. Values use the reported price for Form 4 and the disclosed range for Congress. See methodology and corrections.

Not investment advice. Disclosures are shown as filed and may lag the trade or be amended. No recommendation is made or implied.