Form 8-K

8-K — Praxis Precision Medicines, Inc.

Accession: 0001689548-26-000053

Filed: 2026-06-01

Period: 2026-06-01

CIK: 0001689548

SIC: 2834 (PHARMACEUTICAL PREPARATIONS)

Item: Other Events

Documents

8-K — prax-20260601.htm (Primary)

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8-K

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 1, 2026

PRAXIS PRECISION MEDICINES, INC.

(Exact name of registrant as specified in its charter)

Delaware

001-39620

47-5195942

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(I.R.S. Employer

Identification No.)

Praxis Precision Medicines, Inc.

99 High Street, 30th Floor

Boston, Massachusetts 02110

(Address of principal executive offices, including zip code)

(617) 300-8460

(Registrant’s telephone number, including area code)

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trade

Symbol(s)

Name of each exchange

on which registered

Common Stock, $0.0001 par value per share PRAX The Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01. Other Events.

On June 1, 2026, Praxis Precision Medicines, Inc. (the “Company”) announced results from the Phase 2/3 POWER1 study evaluating vormatrigine in patients with focal onset seizures (“FOS”). The POWER1 study in highly refractory patients with FOS did not meet its primary success measure. The secondary measure, the 50% response rate, was met and seizure reduction during the second half of the study on higher dose (30 mg) was more pronounced. Vormatrigine was generally well-tolerated and adverse event-related discontinuations were less than 10%. Approximately 90% of patients from the vormatrigine arm transitioned to and remain in the open label extension study.

The Company is pausing enrollment in the POWER2 study to reassess the vormatrigine program and determine potential modifications.

Forward-Looking Statements

This Current Report on Form 8-K contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and other federal securities laws, including statements regarding the clinical development of vormatrigine. The forward-looking statements included in this Current Report on Form 8-K are subject to a number of risks, including, without limitation, uncertainties inherent in clinical trials and other risks as described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025 and other filings with the Securities and Exchange Commission. These statements are based only on facts currently known by the Company and speak only as of the date of this Current Report on Form 8-K. As a result, you are cautioned not to rely on these forward-looking statements and the Company undertakes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future developments or otherwise.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

PRAXIS PRECISION MEDICINES, INC.

Date: June 1, 2026 By: /s/ Marcio Souza

Marcio Souza

Chief Executive Officer

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