Role
10%+ Owner
Signature
/s/ Adage Capital Management, L.P.; By: its general partner Adage Capital Partners LLC; By its managing member Robert Atchinson
Issuer symbol
PRAX
Transactions as of
16 Oct 2025
Transactions value $
$33,198,124
Form type
4
Filing time
17 Oct 2025, 16:10:45 UTC
Previous filing
19 Aug 2025

Reporting Owners (3)

Name Relationship Address Signature Signature date CIK
Adage Capital Management, L.P. 10%+ Owner 200 CLARENDON STREET, 52ND FLOOR, BOSTON /s/ Adage Capital Management, L.P.; By: its general partner Adage Capital Partners LLC; By its managing member Robert Atchinson 17 Oct 2025 0001535978
Atchinson Robert 10%+ Owner 200 CLARENDON STREET, 52ND FLOOR, BOSTON /s/ Robert Atchinson 17 Oct 2025 0001403404
Gross Phillip 10%+ Owner 200 CLARENDON STREET, 52ND FLOOR, BOSTON /s/ Phillip Gross 17 Oct 2025 0001403413

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction PRAX Common Stock, $0.0001 par value per share ("Common Stock") Sale $1.13M +12.6K +0.54% $90.00 2.36M 16 Oct 2025 See footnotes F1, F2, F3
transaction PRAX Common Stock Sale $40.7K +447 +0.02% $91.04 2.36M 16 Oct 2025 See footnotes F1, F2, F4
transaction PRAX Common Stock Sale $125K +1.36K +0.06% $92.03 2.36M 16 Oct 2025 See footnotes F1, F2, F5
transaction PRAX Common Stock Sale $56K +559 +0.02% $100.11 2.36M 16 Oct 2025 See footnotes F1, F2, F6
transaction PRAX Common Stock Sale $2.76M +27.3K +1.18% $101.00 2.33M 16 Oct 2025 See footnotes F1, F2
transaction PRAX Common Stock Sale $26.1M +250K +13.65% $104.31 2.08M 16 Oct 2025 See footnotes F1, F2, F7
transaction PRAX Common Stock Sale $216K +1.66K +0.08% $130.10 2.08M 16 Oct 2025 See footnotes F1, F2, F8
transaction PRAX Common Stock Sale $64.1K +487 +0.02% $131.64 2.08M 16 Oct 2025 See footnotes F1, F2, F9
transaction PRAX Common Stock Sale $40.7K +308 +0.01% $132.19 2.08M 16 Oct 2025 See footnotes F1, F2, F10
transaction PRAX Common Stock Sale $2.69M +19.2K +0.94% $140.00 2.06M 16 Oct 2025 See footnotes F1, F2, F11
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Adage Capital Management, L.P. is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.

Explanation of Responses:

Id Content
F1 The securities to which this filing relates are held directly by Adage Capital Partners, L.P., a Delaware limited partnership ("ACP"). Adage Capital Management, L.P., a Delaware limited partnership ("ACM"), serves as the investment manager of ACP and as such has discretion over the portfolio securities held by ACP. Robert Atchinson and Phillip Gross are the managing members of (i) Adage Capital Advisors, L.L.C., a Delaware limited liability company, managing member of Adage Capital Partners GP, L.L.C., a Delaware limited liability company, general partner of ACP and (ii) Adage Capital Partners LLC, a Delaware limited liability company, general partner of ACM.
F2 Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Section 16 of the Securities and Exchange Act of 1934, as amended, except as to such extent of such Reporting Person's pecuniary interest in the securities, if any.
F3 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $90.0000 to $90.5000, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $91.000 to $91.9900, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F5 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $92.0000 to $92.2500, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F6 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $100.0400 to $100.6500, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $104.0000 to $104.3869, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F8 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $130.0000 to $130.9700, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F9 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $131.0000 to $131.9800, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F10 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $132.0000 to $132.5100, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.
F11 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $140.0000 to $140.0100, inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.