Praxis Precision Medicines, Inc. (PRAX) Insider Ownership

Historic Insider Ownership Trends

PRAX's three largest insider shareholders as of March 23, 2026 are Lifesciences Iii, L.P. Clarus (TenPercentOwner, 4.89Mn shares), Bernard Ravina (Chief Medical Officer, 99.48K shares), Marcio Souza (Chief Executive Officer, 76.89K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Lifesciences Iii, L.P. Clarus 0 4,894,109 14 May, 2021
Bernard Ravina Chief Medical Officer 99,476 0 15 Feb, 2022
Marcio Souza Chief Executive Officer 76,890 0 12 Jan, 2026
Nicole Sweeny Chief Commercial Officer 38,619 0 13 Feb, 2023
Timothy Edwin Kelly Chief Financial Officer 31,046 0 13 Jan, 2026
Megan Sniecinski Chief Operating Officer 28,530 0 13 Jan, 2026
William D Young 28,473 0 07 Jul, 2021
Alex Nemiroff General Counsel And Secretary 25,933 0 13 Jan, 2026
Jill Desimone 14,500 0 10 Oct, 2023
Lauren Mastrocola Principal Accounting Officer 13,446 0 13 Jan, 2026
Marcio Souza Chief Executive Officer 0 2,600 31 Dec, 2025
Jeffrey B Kindler 1,166 0 10 Feb, 2026
Stuart A Arbuckle 1,166 0 10 Feb, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
06 Feb, 2026 Jeffrey B Kindler Common Stock A 688 $0.00 688 D A
06 Feb, 2026 Stuart A Arbuckle Common Stock A 688 $0.00 688 D A
06 Feb, 2026 Stuart A Arbuckle Common Stock A 478 $0.00 1,166 D A
06 Feb, 2026 Jeffrey B Kindler Common Stock A 478 $0.00 1,166 D A
06 Feb, 2026 Stuart A Arbuckle Stock Option (Right to Buy) A 224 $0.00 224 D A
06 Feb, 2026 Jeffrey B Kindler Stock Option (Right to Buy) A 224 $0.00 224 D A
12 Jan, 2026 Megan Sniecinski Common Stock D 885 $275.74 28,530 D F
12 Jan, 2026 Lauren Mastrocola Common Stock D 344 $275.74 13,446 D F
12 Jan, 2026 Alex Nemiroff Common Stock D 768 $275.74 25,933 D F
12 Jan, 2026 Timothy Edwin Kelly Common Stock D 943 $275.74 31,046 D F
08 Jan, 2026 Timothy Edwin Kelly Common Stock A 8,800 $0.00 33,324 D A
08 Jan, 2026 Marcio Souza Common Stock A 27,640 $0.00 81,142 D A
08 Jan, 2026 Lauren Mastrocola Common Stock A 3,750 $0.00 14,157 D A
08 Jan, 2026 Megan Sniecinski Common Stock A 9,625 $0.00 30,502 D A
08 Jan, 2026 Alex Nemiroff Common Stock A 6,875 $0.00 27,618 D A
10 Jan, 2026 Alex Nemiroff Common Stock D 917 $288.45 26,701 D F
10 Jan, 2026 Timothy Edwin Kelly Common Stock D 1,335 $288.45 31,989 D F
10 Jan, 2026 Lauren Mastrocola Common Stock D 367 $288.45 13,790 D F
10 Jan, 2026 Marcio Souza Common Stock D 4,252 $288.45 76,890 D F
10 Jan, 2026 Megan Sniecinski Common Stock D 1,087 $288.45 29,415 D F