Newest
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

Company / CIK 0001689548

Praxis Precision Medicines, Inc.

Ticker
PRAX
Size, estimated from filings
Mid cap ($2B – $10B)
Insiders on file
14
Members of Congress who traded it
1
Federal contracts on record
none matched
Lobbying filings on record
7
SEC filings
EDGAR ↗
Latest trade on record
September 29, 2026

Praxis Precision Medicines, Inc. (PRAX) has 14 insiders on file who disclosed 100 transactions in the last 12 months (0 open-market buys, 31 sales, about $18.0M at reported prices), and 2 congressional trades in its stock are on record. No federal contract award that started in the last 180 days was found for a recipient with exactly this name, and 5 lobbying filings naming it as client report $240K in 2026.

Last updated October 19, 2026 · Sources: SEC EDGAR; USAspending; Senate LDA

Praxis Precision Medicines, Inc. 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 Praxis Precision Medicines, Inc. over the last 12 months; the most active is Nemiroff Alex with $5.4M.

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

NameRoleRowsBoughtSoldLast filed
Souza MarcioChief Executive Officer802July 8, 2026
DeSimone JillDirector18012June 26, 2026
KINDLER JEFFREY BDirector500June 12, 2026
Arbuckle Stuart ADirector500June 12, 2026
Norden GregoryDirector200June 12, 2026
MITCHELL DEAN JDirector200June 12, 2026
Cudkowicz Merit EsterDirector200June 12, 2026
YOUNG WILLIAM DDirector200June 12, 2026
Chodakewitz JeffreyDirector200June 12, 2026
Mastrocola LaurenPrincipal Accounting Officer2205May 19, 2026
Nemiroff AlexGeneral Counsel and Secretary2007May 19, 2026
Kelly Timothy EdwinChief Financial Officer703May 19, 2026
Sniecinski MeganChief Operating Officer502May 19, 2026
Adage Capital Management, L.P.Insider10010October 17, 2025

Rows are this company's Form 4 rows for each person. "Bought" and "sold" count open-market purchases (code P) and sales only. More in insider buying and insider selling.

Members of Congress who traded PRAX

From periodic transaction reports that name the company's stock. Amounts are the sums of the ranges as filed. Every row is on the PRAX page.

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

Insider transactions

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

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

Federal contracts (USAspending, awards started in the last 180 days)

No contract award starting in the last 180 days was found for a recipient named exactly "Praxis Precision Medicines, Inc.". Subsidiaries and differently-spelled recipients are not matched — search contracts.

Lobbying (Senate LDA, as client)

PeriodRegistrantPrimary issueAmountSource
2026 Q3BALLARD PARTNERSHealth Issues$120,000LDA ↗
2026 Q3THE KPM GROUP DC LLCPharmacy$40,000LDA ↗
2026 Q3BALLARD PARTNERSHealth Issues—LDA ↗
2026 Q2THE KPM GROUP DC LLCPharmacy$40,000LDA ↗
2026 Q1THE KPM GROUP DC LLCPharmacy$40,000LDA ↗
2025 Q4THE KPM GROUP DC LLCPharmacy$40,000LDA ↗
2025 Q3THE KPM GROUP DC LLCPharmacy$40,000LDA ↗

Companies whose stock was traded by the same people who traded PRAX, by number of filers in common. It shows overlap in public filings and nothing else.

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
Lobbying disclosure filings7 filings———LDA.gov search

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.

Insiders and their transactions come from SEC EDGAR Form 4 filings for this issuer. Contracts and lobbying are matched by exact normalized name (suffixes like Inc./Corp. ignored) to USAspending recipients and LDA clients — a conservative match that misses subsidiaries on purpose. See methodology and corrections.

Not investment advice. Public records shown as filed; no recommendation is made or implied.