[SCHEDULE 13G/A] Praxis Precision Medicines, Inc. SEC Filing

Adage Capital Management and two principals report beneficial ownership of 2,374,085 shares of Praxis Precision Medicines, Inc. (PRAX), representing 11.28% of the 21,045,781 shares outstanding as of July 31, 2025.

Rhea-AI Filing Summary

Adage Capital Management and two principals report beneficial ownership of 2,374,085 shares of Praxis Precision Medicines, Inc. (PRAX), representing 11.28% of the 21,045,781 shares outstanding as of July 31, 2025. The filing is a Schedule 13G/A indicating the stake is held in the ordinary course of business and not to influence control. The reported holdings are held directly by Adage Capital Partners, L.P. and are disclosed by Adage Capital Management, L.P., Robert Atchinson and Phillip Gross, each showing shared voting and dispositive power over 2,374,085 shares and no sole voting or dispositive power. The filing cites the issuers principal executive office in Boston and uses the CUSIP 74006W207.

Insights

Securities Analyst

TL;DR: A prominent investment manager reports an 11.28% passive stake in PRAX, a sizable minority position that must be monitored by holders.

Adages disclosure shows a 2.37 million-share position held through affiliated partnerships with shared voting and dispositive power, consistent with institutional accumulation disclosed on a Schedule 13G/A for passive investors. The filing references 21,045,781 shares outstanding, providing a clear percentage basis. This level of ownership exceeds 5% and is material to shareholders because it represents a significant minority stake without stated intent to change control, as per the certification language. The structure identifies the reporting entities and individual principals, clarifying attribution of voting and disposition rights.

Corporate Governance Expert

TL;DR: Adage and two named principals hold an 11.28% position with shared control indicators; filing signals passive intent under Schedule 13G/A.

The Schedule 13G/A classifies the position as held in the ordinary course of business and not for the purpose of influencing control, which is important for governance expectations. The disclosure names Adage Capital Management, L.P., and principals Robert Atchinson and Phillip Gross, and documents shared voting and dispositive power only. For boards and investors, a reported >10% stake is material for monitoring potential engagement but the form asserts passive intent, limiting immediate governance implications disclosed in this filing.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Praxis (PRAX) shares does Adage Capital report owning?

The filing reports 2,374,085 shares beneficially owned.

What percentage of PRAX does the reported holding represent?

The reported position represents 11.28% of the class based on 21,045,781 shares outstanding as of July 31, 2025.

Which entities and individuals filed the Schedule 13G/A for PRAX?

The filing was made by Adage Capital Management, L.P. and disclosed by Robert Atchinson and Phillip Gross.

Does the Schedule 13G/A indicate intent to influence control of Praxis?

No. The certification states the shares were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.

Who has voting and dispositive power over the reported PRAX shares?

The filing shows 0 sole voting/dispositive power and 2,374,085 shared voting and shared dispositive power for each reporting person.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 09/02/2025 - 04:06 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

Praxis Precision Medicines, Inc.

(Name of Issuer)

Common Stock, par value $0.0001 per share

(Title of Class of Securities)

74006W207

(CUSIP Number)

08/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 74006W207

1

Names of Reporting Persons

Adage Capital Management, L.P.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,374,085.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,374,085.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,374,085.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.28 %

12

Type of Reporting Person (See Instructions)

IA, PN

SCHEDULE 13G

CUSIP No. 74006W207

1

Names of Reporting Persons

Robert Atchinson

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,374,085.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,374,085.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,374,085.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.28 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

CUSIP No. 74006W207

1

Names of Reporting Persons

Phillip Gross

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 2,374,085.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 2,374,085.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

2,374,085.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

11.28 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Praxis Precision Medicines, Inc.
(b)	Address of issuer's principal executive offices: 99 High Street, 30th Floor Boston, MA 02110
Item 2.
(a)	Name of person filing: This statement is filed by: (i) Adage Capital Management, L.P., a Delaware limited partnership ("ACM"), as the investment manager of Adage Capital Partners, L.P., a Delaware limited partnership ("ACP"), with respect to the shares of common stock, par value $0.0001 per share ("Common Stock") of Praxis Precision Medicines, Inc., a Delaware corporation (the "Company") directly held by ACP; (ii) Robert Atchinson ("Mr. Atchinson"), as (1) managing member of Adage Capital Advisors, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACA"), managing member of Adage Capital Partners GP, L.L.C., a limited liability company organized under the laws of the State of Delaware ("ACPGP"), general partner of ACP and (2) managing member of Adage Capital Partners LLC, a Delaware limited liability company ("ACPLLC"), general partner of ACM, with respect to the shares of Common Stock directly held by ACP; and (iii) Phillip Gross ("Mr. Gross"), as (1) managing member of ACA, managing member of ACPGP and (2) managing member of ACPLLC, general partner of ACM, with respect to the shares of Common Stock directly held by ACP. The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." Any disclosures herein with respect to persons other than the Reporting Persons are made on information and belief after making inquiry to the appropriate party. The filing of this statement should not be construed in and of itself as an admission by any Reporting Person as to beneficial ownership of the securities reported herein.
(b)	Address or principal business office or, if none, residence: The address of the business office of each of the Reporting Persons is 200 Clarendon Street, 52nd Floor, Boston, Massachusetts 02116.
(c)	Citizenship: ACM is a limited partnership organized under the laws of the State of Delaware. Messrs. Gross and Atchinson are citizens of the United States.
(d)	Title of class of securities: Common Stock, par value $0.0001 per share
(e)	CUSIP No.: 74006W207
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 21,045,781 shares of Common Stock outstanding as of July 31, 2025, as reported in the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2025, filed with the Securities and Exchange Commission on August 4, 2025.
(b)	Percent of class: 11.28%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. See Item 2(a).
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Adage Capital Management, L.P.

Signature:	/s/ Robert Atchinson
Name/Title:	By: Adage Capital Partners LLC, its General Partner, By: Robert Atchinson, its Managing Member
Date:	09/02/2025

Robert Atchinson

Signature:	/s/ Robert Atchinson
Name/Title:	Robert Atchinson, individually
Date:	09/02/2025

Phillip Gross

Signature:	/s/ Phillip Gross
Name/Title:	Phillip Gross, individually
Date:	09/02/2025