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 29, 2026

PRAXIS PRECISION MEDICINES, INC.

(Exact name of registrant as specified in its charter)

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:

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

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 4.01 Changes in Registrant's Certifying Accountant.

Dismissal of Independent Registered Public Accounting Firm

On June 29, 2026, the Audit Committee of the Board of Directors (the "Audit Committee") of Praxis Precision Medicines, Inc. (the "Company") approved the dismissal of Ernst & Young LLP ("EY") as the Company's independent registered public accounting firm, effective as of that date.

The reports of EY on the Company's financial statements for the fiscal years ended December 31, 2025 and December 31, 2024 did not contain an adverse opinion or a disclaimer of opinion, and were not qualified or modified as to uncertainty, audit scope or accounting principles.

During the fiscal years ended December 31, 2025 and December 31, 2024 and through June 29, 2026, there were no: (i) disagreements (as defined in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) with EY on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which disagreements, if not resolved to the satisfaction of EY, would have caused it to make reference to the subject matter of the disagreements in connection with its reports; or (ii) reportable events (as defined in Item 304(a)(1)(v) of Regulation S-K).

The Company has provided EY with a copy of the disclosures it is making in this Current Report on Form 8-K and has requested that EY furnish a letter addressed to the Securities and Exchange Commission stating whether it agrees with the statements made by the Company in this Current Report on Form 8-K and, if not, stating the respects in which it does not agree. A copy of the letter from EY is attached as Exhibit 16.1 to this Current Report on Form 8-K.

Engagement of New Independent Registered Public Accounting Firm

On June 29, 2026, the Audit Committee approved the engagement of KPMG LLP ("KPMG") as the Company's new independent registered public accounting firm, effective as of that date.

During the fiscal years ended December 31, 2025 and December 31, 2024 and through June 29, 2026, neither the Company nor anyone on its behalf has consulted with KPMG regarding: (i) the application of accounting principles to a specified transaction, either completed or proposed, or the type of audit opinion that might be rendered on the Company's financial statements, and neither a written report nor oral advice was provided to the Company by KPMG that was an important factor considered by the Company in reaching a decision as to any accounting, auditing or financial reporting issue; or (ii) any matter that was either the subject of a disagreement (as defined in Item 304(a)(1)(iv) of Regulation S-K and the related instructions) or a reportable event (as defined in Item 304(a)(1)(v) of Regulation S-K).

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

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.