LIVE FROM THE DATABASETRANSACTIONS 362,430COMPANIES 5,763LATEST TRADE Oct 16UPDATED Oct 17, 12:31 AM
PRAXCIK 0001689548

Praxis Precision Medicines, Inc.

78 transactions by 14 insiders, from October 16, 2025 to July 8, 2026.

Transactions
7814 insiders
Bought · P
Nonenobody bought on the open market
Sold · S
$36.8Mopen market
Net
−$36.8Mnet selling

Officers and directors

People inside the company. What they do with their own shares is the reason this data exists.

InsiderTradesPlannedBoughtSold
Jill DeSimoneDir1816/18—$3.6M
Marcio SouzaCEO7———
Lauren MastrocolaOfficer6———
Alex NemiroffGC6———
Timothy Edwin KellyCFO6———
Stuart A. ArbuckleDir5———
Jeffrey B. KindlerDir5———
Megan SniecinskiCOO5———
Dean J. MitchellDir2———
William D. YoungDir2———
Jeffrey ChodakewitzDir2———
Merit Ester CudkowiczDir2———
Gregory NordenDir2———

Large holders and funds

Holders above 10%, often funds. They file the same form, but they trade for portfolio reasons, not because of what they know.

InsiderTradesPlannedBoughtSold
Adage Capital Management, L.P.10%10——$33.2M

All transactions

78 in total, newest filings first.

InsiderDateCodeSharesPriceValue
Marcio SouzaCEOJul 8G2,600$0.00—
Marcio SouzaCEOJul 8G20,521$0.00—
Jill DeSimoneDirDERIVJun 24MPLAN3,034$0.00—?
Jill DeSimoneDirDERIVJun 24MPLAN8,566$0.00—?
Jill DeSimoneDirJun 24SPLAN837$315.71$264K
Jill DeSimoneDirJun 24SPLAN1,279$314.90$403K
Jill DeSimoneDirJun 24SPLAN504$313.66$158K
Jill DeSimoneDirJun 24SPLAN1,004$312.83$314K
Jill DeSimoneDirJun 24SPLAN2,854$311.91$890K
Jill DeSimoneDirJun 24SPLAN1,750$310.89$544K
Jill DeSimoneDirJun 24SPLAN999$309.38$309K
Jill DeSimoneDirJun 24SPLAN1,240$308.24$382K
Jill DeSimoneDirJun 24SPLAN683$306.77$210K
Jill DeSimoneDirJun 24SPLAN320$305.31$98K
Jill DeSimoneDirJun 24SPLAN120$303.13$36K
Jill DeSimoneDirJun 24SPLAN10$301.44$3K
Jill DeSimoneDirJun 24MPLAN3,034$147.30$447K
Jill DeSimoneDirJun 24MPLAN8,566$44.25$379K
William D. YoungDirDERIVJun 10A648$0.00—?
William D. YoungDirJun 10A1,371$0.00—
Gregory NordenDirDERIVJun 10A648$0.00—?
Gregory NordenDirJun 10A1,371$0.00—
Dean J. MitchellDirDERIVJun 10A648$0.00—?
Dean J. MitchellDirJun 10A1,371$0.00—
Jeffrey B. KindlerDirDERIVJun 10A648$0.00—?
Jeffrey B. KindlerDirJun 10A1,371$0.00—
Jill DeSimoneDirDERIVJun 10A648$0.00—?
Jill DeSimoneDirJun 10A1,371$0.00—
Merit Ester CudkowiczDirDERIVJun 10A648$0.00—?
Merit Ester CudkowiczDirJun 10A1,371$0.00—
Jeffrey ChodakewitzDirDERIVJun 10A648$0.00—?
Jeffrey ChodakewitzDirJun 10A1,371$0.00—
Stuart A. ArbuckleDirDERIVJun 10A648$0.00—?
Stuart A. ArbuckleDirJun 10A1,371$0.00—
Megan SniecinskiCOOMay 14A89$167.94$15K
Marcio SouzaCEOMay 14A126$167.94$21K
Alex NemiroffGCMay 14A78$167.94$13K
Lauren MastrocolaOfficerMay 14A127$167.94$21K
Timothy Edwin KellyCFOMay 14A121$167.94$20K
Jeffrey B. KindlerDirDERIVFeb 6A224$0.00—?
Jeffrey B. KindlerDirFeb 6A478$0.00—
Jeffrey B. KindlerDirFeb 6A688$0.00—
Stuart A. ArbuckleDirDERIVFeb 6A224$0.00—?
Stuart A. ArbuckleDirFeb 6A478$0.00—
Stuart A. ArbuckleDirFeb 6A688$0.00—
Megan SniecinskiCOOJan 12F885$275.74$244K
Alex NemiroffGCJan 12F768$275.74$212K
Lauren MastrocolaOfficerJan 12F344$275.74$95K
Timothy Edwin KellyCFOJan 12F943$275.74$260K
Megan SniecinskiCOODERIVJan 8A7,700$0.00—?
Megan SniecinskiCOOJan 10F1,087$288.45$314K
Megan SniecinskiCOOJan 8A9,625$0.00—
Marcio SouzaCEODERIVJan 8A22,110$0.00—?
Marcio SouzaCEOJan 10F4,252$288.45$1.2M
Marcio SouzaCEOJan 8A27,640$0.00—
Alex NemiroffGCDERIVJan 8A5,500$0.00—?
Alex NemiroffGCJan 10F917$288.45$265K
Alex NemiroffGCJan 8A6,875$0.00—
Lauren MastrocolaOfficerDERIVJan 8A7,500$0.00—?
Lauren MastrocolaOfficerJan 10F367$288.45$106K
Lauren MastrocolaOfficerJan 8A3,750$0.00—
Timothy Edwin KellyCFODERIVJan 8A7,040$0.00—?
Timothy Edwin KellyCFOJan 10F1,335$288.45$385K
Timothy Edwin KellyCFOJan 8A8,800$0.00—
Marcio SouzaCEOJan 7F405$292.63$119K
Alex NemiroffGCJan 7F89$292.63$26K
Lauren MastrocolaOfficerJan 7F35$292.63$10K
Timothy Edwin KellyCFOJan 7F139$292.63$41K
Adage Capital Management, L.P.10%JOINTOct 16S19,198$140.00$2.7M
Adage Capital Management, L.P.10%JOINTOct 16S308$132.19$41K
Adage Capital Management, L.P.10%JOINTOct 16S487$131.64$64K
Adage Capital Management, L.P.10%JOINTOct 16S1,661$130.10$216K
Adage Capital Management, L.P.10%JOINTOct 16S250,000$104.31$26.1M
Adage Capital Management, L.P.10%JOINTOct 16S27,287$101.00$2.8M
Adage Capital Management, L.P.10%JOINTOct 16S559$100.11$56K
Adage Capital Management, L.P.10%JOINTOct 16S1,363$92.03$125K
Adage Capital Management, L.P.10%JOINTOct 16S447$91.04$41K
Adage Capital Management, L.P.10%JOINTOct 16S12,600$90.00$1.1M