PRAX / Praxis Precision Medicines, Inc. - Pemfailan SEC, Laporan Tahunan, Penyata Proksi

Praxis Precision Medicines, Inc.
US ˙ NasdaqGS ˙ US74006W2070

Statistik Asas
CIK 1689548
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Praxis Precision Medicines, Inc.
SEC Filings (Chronological Order)
Halaman ini menyediakan senarai kronologi lengkap bagi Pemfailan SEC, tidak termasuk pemfailan pemilikan yang kami sediakan di tempat lain.
September 5, 2025 EX-1.1

SALES AGREEMENT

Exhibit 1.1 SALES AGREEMENT September 5, 2025 TD Securities (USA) LLC 1 Vanderbilt Avenue New York, New York 10017 Ladies and Gentlemen: Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time through TD Securities (USA) LLC, as sales agent and/or principal (the “Agent”), shares of th

September 5, 2025 424B5

Up to $250,000,000 Common Stock

TABLE OF CONTENTS  Filed Pursuant to 424(b)(5)  Registration No. 333-284016 PROSPECTUS SUPPLEMENT (To Prospectus Dated December 23, 2024) Up to $250,000,000 Common Stock We have entered into a Sales Agreement, dated September 5, 2025, or the sales agreement, with TD Securities (USA) LLC, or TD Cowen, as sales agent, relating to the sale of shares of our common stock, par value $0.0001 per share, f

September 5, 2025 8-K

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): September 2, 2025 PRAXIS PRECISIO

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): September 2, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

September 5, 2025 EX-FILING FEES

Security Type

Calculation of Filing Fee Tables S-3 Praxis Precision Medicines, Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Fo

August 4, 2025 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2025 Financial Results RADIANT study with vormatrigine in focal onset seizure (FOS) patients over eight weeks demonstrated 56.3% median reduction in seizure frequency fro

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2025 Financial Results RADIANT study with vormatrigine in focal onset seizure (FOS) patients over eight weeks demonstrated 56.

August 4, 2025 EX-99.2

RADIANT topline August 4, 2025 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial cond

radianttoplinefinal RADIANT topline August 4, 2025 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions reg

August 4, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

August 4, 2025 8-K

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): August 4, 2025 PRAXIS PRECISION M

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): August 4, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

July 17, 2025 8-K

Regulation FD Disclosure, Other Events

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): July 17, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

June 27, 2025 8-K

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 26, 2025 PRAXIS PRECISION ME

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 26, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

May 2, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

May 2, 2025 EX-99.1

CORPORATE OVERVIEW May, 2025 ® 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial cond

CORPORATE OVERVIEW May, 2025 ® 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of

May 2, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): May 2, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Commi

May 2, 2025 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

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): May 2, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Commi

May 2, 2025 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2025 Financial Results On track for six major study readouts across four programs over the next 12 months Ready to initiate pivotal studies in two developmental and epilep

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2025 Financial Results On track for six major study readouts across four programs over the next 12 months Ready to initiate pivotal studies in two developmental and epileptic encephalopathy (DEE) programs in mid-year 2025: EMERALD for broad DEEs with relutrigine and EMBRAVE3 for SCN2A GoF with elsunersen Vormatrigine co

April 30, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

April 30, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

February 28, 2025 EX-21.1

Subsidiaries of the Registrant

Exhibit 21.1 SUBSIDIARIES OF PRAXIS PRECISION MEDICINES, INC. Name Jurisdiction of Formation / Incorporation Praxis Security Corporation Massachusetts

February 28, 2025 EX-19

Praxis Precision Medicines, Inc. Insider Trading Policy

Exhibit 19 Praxis Precision Medicines, Inc. Insider Trading Policy In order to mitigate the risk of insider trading violations by officers, directors, employees and other related individuals of Praxis Precision Medicines, Inc. (the “Company”) and its subsidiaries, the Company has adopted this Insider Trading Policy (the “Policy”). Statement of Intent The Company opposes the misuse of material nonp

February 28, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

February 28, 2025 EX-FILING FEES

Filing Fee Table.

Calculation of Filing Fee Tables S-8 Praxis Precision Medicines, Inc. Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Common Stock, $0.0001 par value per share Other 1,165,340 $ 67.25 $ 78,369,115.00 0.0001531 $ 11,998

February 28, 2025 8-K

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): February 28, 2025 PRAXIS PRECISIO

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): February 28, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

February 28, 2025 S-8

As filed with the Securities and Exchange Commission on February 28, 2025

As filed with the Securities and Exchange Commission on February 28, 2025 Registration No.

February 28, 2025 EX-99.1

Praxis Precision Medicines Provides Update on Essential3 and Corporate Update

Praxis Precision Medicines Provides Update on Essential3 and Corporate Update BOSTON, February 28, 2025 (GLOBE NEWSWIRE) — Praxis Precision Medicines, Inc.

February 28, 2025 EX-FILING FEES

Filing Fee Table

Calculation of Filing Fee Tables S-8 Praxis Precision Medicines, Inc. Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee 1 Equity Common Stock, $0.0001 par value per share Other 870,000 $ 67.25 $ 58,507,500.00 0.0001531 $ 8,957.50

February 28, 2025 S-8

As filed with the Securities and Exchange Commission on February 28, 2025

As filed with the Securities and Exchange Commission on February 28, 2025 Registration No.

February 14, 2025 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 ex-99-02142025110241.htm JOINT FILING AGREEMENT EXHIBIT 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the undersigned agree to the joint filing on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Common Stock of Praxis Precision Medicines, Inc. and further agree t

January 29, 2025 8-K

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): January 12, 2025 PRAXIS PRECISION

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): January 12, 2025 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

January 29, 2025 EX-99.1

Praxis Precision Medicines Highlights 2025 Corporate Strategy and Business Priorities Three blockbuster-potential assets in late-stage clinical trials and four pivotal readouts expected in 2025; anticipate four commercial assets by 2028 Study 1 of Es

Praxis Precision Medicines Highlights 2025 Corporate Strategy and Business Priorities Three blockbuster-potential assets in late-stage clinical trials and four pivotal readouts expected in 2025; anticipate four commercial assets by 2028 Study 1 of Essential3 program for ulixacaltamide in essential tremor (ET) on track for Q1 2025 interim analysis; NDA filing for ulixacaltamide expected in 2025 Enr

December 23, 2024 S-3ASR

As filed with the Securities and Exchange Commission on December 23, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on December 23, 2024 Registration No.

December 23, 2024 EX-1.3

Amendment No. 1 to Open Market Sale Agreement, dated December 23, 2024, by and between Praxis Precision Medicines, Inc. and Jefferies LLC.

Exhibit 1.3 AMENDMENT NO. 1 TO OPEN MARKET SALE AGREEMENT December 23, 2024 This Amendment No. 1 (“Amendment No. 1”) amends that certain Open Market Sale AgreementSM, dated as of March 5, 2024 (the “Agreement”), by and between Praxis Precision Medicines, Inc. (the “Company”) and Jefferies LLC, as sales agent and/or principal (the “Agent”). Defined terms used herein and not otherwise defined shall

December 23, 2024 EX-4.4

Form of Indenture.

Exhibit 4.4 PRAXIS PRECISION MEDICINES, INC. INDENTURE Dated as of , 20 [] Trustee TABLE OF CONTENTS Page ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.1. Definitions 1 Section 1.2. Other Definitions 4 Section 1.3. Incorporation by Reference of Trust Indenture Act 4 Section 1.4. Rules of Construction 5 ARTICLE II. THE SECURITIES 5 Section 2.1. Issuable in Series 5 Section 2.2.

December 23, 2024 EX-1.2

, dated as of March 5, 2024, by and between Praxis Precision Medicines, Inc. and Jefferies LLC.

Exhibit 1.2 OPEN MARKET SALE AGREEMENTSM March 5, 2024 JEFFERIES LLC 520 Madison Avenue New York, New York 10022 Ladies and Gentlemen: Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time through Jefferies LLC, as sales agent and/or principal (the “Agent”), shares of the Company’s

December 23, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Praxis Precision Medicines, Inc.

November 14, 2024 EX-99.1

Joint Filing Agreement

EX-99.1 2 tm2427451d17ex1.htm EXHIBIT 1 EXHIBIT 1 AGREEMENT This Joint Filing Agreement, dated as of November 14, 2024 is by and among RA Capital Management, L.P., Peter Kolchinsky, Rajeev Shah, and RA Capital Healthcare Fund, L.P. (the foregoing are collectively referred to herein as the “Filers”). Each of the Filers may be required to file with the United States Securities and Exchange Commissio

November 14, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / Verition Fund Management LLC Passive Investment

SC 13G/A 1 sadaveritionpraxissc13ga1.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 74006W207 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this S

November 14, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / Cormorant Asset Management, LP Passive Investment

SC 13G/A 1 cormorant-prax093024a2.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 2)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74006W207 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate

November 14, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / Point72 Asset Management, L.P. Passive Investment

SC 13G/A 1 p24-3173sc13ga.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A 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) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the app

November 14, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / RA CAPITAL MANAGEMENT, L.P. - SC 13G/A Passive Investment

SC 13G/A 1 tm2427451d17sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W207 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of th

November 14, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / Venrock Healthcare Capital Partners III, L.P. - SC 13G/A Passive Investment

SC 13G/A 1 tm2428137d14sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A 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) September 30, 2024 (Date of Event Which Requires Filing of th

November 12, 2024 SC 13G

PRAX / Praxis Precision Medicines, Inc. / Capital Research Global Investors - SEC SCHEDULE 13G Passive Investment

SC 13G 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74006W207 (CUSIP Number) September 30, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropri

November 12, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / Adage Capital Management, L.P. - PRAXIS PRECISION MEDICINES, INC. Passive Investment

SC 13G/A 1 p24-3022sc13ga.htm PRAXIS PRECISION MEDICINES, INC. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A 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) September 30, 2024** (Date of Event Which Requires Fili

November 6, 2024 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2024 Financial Results Interim analysis for Study 1 of Essential3 Phase 3 program for ulixacaltamide in essential tremor (ET) confirmed for Q1 2025; NDA filing anticipated

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2024 Financial Results Interim analysis for Study 1 of Essential3 Phase 3 program for ulixacaltamide in essential tremor (ET) confirmed for Q1 2025; NDA filing anticipated in 2025 Registrational Cohort 2 of EMBOLD study recruiting following unprecedented seizure freedom seen in positive topline EMBOLD results for Cohort 1 in SCN2A and SCN8A developmental and epileptic encephalopathies (DEEs) Vormatrigine (PRAX-628) on track for topline from POWER1 study in focal epilepsy and RADIANT study in focal and generalized epilepsy in 2025 Maintains runway into 2027 BOSTON, November 6, 2024 — Praxis Precision Medicines, Inc.

November 6, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 6, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

November 6, 2024 EX-99.2

CORPORATE OVERVIEW November 2024 ® 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial

CORPORATE OVERVIEW November 2024 ® 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the futur

November 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

October 15, 2024 EX-10.1

Employment Agreement Amendment Letter, dated October 11, 2024, by and between Marcio Souza and Praxis Precision Medicines, Inc.

Exhibit 10.1 Praxis Precision Medicines, Inc. 99 High Street, 30th Floor Boston, MA 02110 www.praxismedicines.com October 11, 2024 Marcio Souza [***] [***] RE: Employment Agreement Amendment Dear Marcio: Reference is made to the amended and restated employment agreement, executed by you September 30, 2020, between Praxis Precision Medicines, Inc. (the “Company”) and you (the “Employment Agreement”

October 15, 2024 EX-10.3

Employment Agreement Amendment Letter, dated October 11, 2024, by and between Alex Nemiroff and Praxis Precision Medicines, Inc.

Exhibit 10.3 Praxis Precision Medicines, Inc. 99 High Street, 30th Floor Boston, MA 02110 www.praxismedicines.com October 11, 2024 Alex Nemiroff [***] [***] RE: Employment Agreement Amendment Dear Alex: Reference is made to the amended and restated employment agreement, executed by you on October 1, 2020, between Praxis Precision Medicines, Inc. (the “Company”) and you (the “Employment Agreement”)

October 15, 2024 EX-10.2

Employment Agreement Amendment Letter, dated October 11, 2024, by and between Timothy Kelly and Praxis Precision Medicines, Inc.

Exhibit 10.2 Praxis Precision Medicines, Inc. 99 High Street, 30th Floor Boston, MA 02110 www.praxismedicines.com October 11, 2024 Timothy E. Kelly [***] [***] RE: Employment Agreement Amendment Dear Timy: Reference is made to the employment agreement, executed by you May 13, 2021, between Praxis Precision Medicines, Inc. (the “Company”) and you (the “Employment Agreement”). By your signature to t

October 15, 2024 8-K

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): October 11, 2024 PRAXIS PRECISION

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): October 11, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

September 23, 2024 EX-99.1

AGREEMENT

EX-99.1 2 d797047dex991.htm EX-99.1 EXHIBIT 1 AGREEMENT The persons below hereby agree that the Schedule 13G to which this agreement is attached as an exhibit, as well as all future amendments to such Schedule 13G, shall be filed on behalf of each of them. This agreement is intended to satisfy the requirements of Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934. Date: September 23,

September 23, 2024 SC 13G

PRAX / Praxis Precision Medicines, Inc. / PERCEPTIVE ADVISORS LLC - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W207 (CUSIP Number) September 12, 2024 (Date of Event Which Requires Filing of this Statement) Check the appropriate box

September 3, 2024 8-K

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): September 3, 2024 PRAXIS PRECISIO

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): September 3, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

September 3, 2024 EX-99.1

2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limit

Exhibit 99.1 RELUTRIGINE: EMBOLD Phase 2 Study Topline Results September 3, 2024 ® 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs,

August 13, 2024 8-K

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): August 13, 2024 PRAXIS PRECISION

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): August 13, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (C

August 13, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

August 13, 2024 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2024 Financial Results Up to four programs in registrational phase by 2025 Planned interim analysis for ulixacaltamide Essential3 Study 1 to be conducted in Q4 2024 Topli

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2024 Financial Results Up to four programs in registrational phase by 2025 Planned interim analysis for ulixacaltamide Essential3 Study 1 to be conducted in Q4 2024 Topline results for Phase 2 EMBOLD study of relutrigine (PRAX-562) in SCN2A and SCN8A developmental and epileptic encephalopathies (DEEs) expected in Q3 2024 PRAX-628 Phase 2/3 POWER1 study to initiate in Q4 2024 Initiation of additional Phase 2 study (RADIANT) for PRAX-628 in focal and generalized epilepsy in 2H 2024, with topline results expected in 1H 2025 Cash and investments of $434 million as of June 30, 2024 maintains runway into 2027 BOSTON, August 13, 2024 — Praxis Precision Medicines, Inc.

August 13, 2024 EX-99.2

CORPORATE OVERVIEW August 2024 ® 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial co

praxiscorporatedeckaugus CORPORATE OVERVIEW August 2024 ® 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumpti

August 13, 2024 EX-10.1

Non-Employee Director Compensation Policy (incorporated by reference to Exhibit 10.1

PRAXIS PRECISION MEDICINES, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY The purpose of this Non-Employee Director Compensation Policy (the “Policy”) of Praxis Precision Medicines, Inc. (the “Company”) is to provide a total compensation package that enables the Company to attract and retain, on a long-term basis, high-caliber directors who are not employees or officers of the Company or its subs

July 1, 2024 SC 13G

PRAX / Praxis Precision Medicines, Inc. / RA CAPITAL MANAGEMENT, L.P. - SC 13G Passive Investment

SC 13G 1 tm2418698d1sc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W207 (CUSIP Number) June 21, 2024 (Date of Event Which Requires Filing of this Statement)

June 10, 2024 S-8 POS

As filed with the Securities and Exchange Commission on June 10, 2024

As filed with the Securities and Exchange Commission on June 10, 2024 Registration No.

June 10, 2024 EX-99.4

Form of Non-Qualified Stock Option Agreement for Non-Employee Directors under the Registrant’s 2020 Stock Option and Incentive Plan, as amended and restated

Exhibit 99.4 NON-QUALIFIED STOCK OPTION AGREEMENT FOR NON-EMPLOYEE DIRECTORS UNDER THE PRAXIS PRECISION MEDICINES, INC. 2020 STOCK OPTION AND INCENTIVE PLAN Name of Optionee: No. of Option Shares: Option Exercise Price per Share: $ [FMV on Grant Date] Grant Date: Expiration Date: [No more than 10 years] Pursuant to the Praxis Precision Medicines, Inc. 2020 Stock Option and Incentive Plan, as amend

June 6, 2024 EX-10.1

2020 Stock Option and Incentive Plan, as amended and restated (Incorporated by reference to Exhibit 10.1 to the Registrant’s Current Report on Form 8-K (File No. 001-39620) filed with the Securities and Exchange Commission on June 6, 2024).

PRAXIS PRECISION MEDICINES, INC. 2020 STOCK OPTION AND INCENTIVE PLAN (AS AMENDED AND RESTATED EFFECTIVE JUNE 5, 2024) SECTION 1. GENERAL PURPOSE OF THE PLAN; DEFINITIONS The name of the plan is the Praxis Precision Medicines, Inc. 2020 Stock Option and Incentive Plan (as amended and/or restated from time to time, the “Plan”). The purpose of the Plan is to encourage and enable the officers, employ

June 6, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

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 5, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Comm

May 13, 2024 8-K

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): May 13, 2024 PRAXIS PRECISION MED

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): May 13, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Comm

May 13, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

May 13, 2024 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2024 Financial Results Plans to initiate two efficacy studies investigating PRAX-628 in focal onset seizures in the second half of 2024 and first half of 2025, respectivel

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2024 Financial Results Plans to initiate two efficacy studies investigating PRAX-628 in focal onset seizures in the second half of 2024 and first half of 2025, respectively Continued strong recruitment for the pivotal Essential3 trials in Essential Tremor (ET), with over 50,000 pre-screening forms and over 7,000 referra

April 26, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

April 26, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

March 29, 2024 EX-1.1

Underwriting Agreement, dated March 27, 2024, by and among Praxis Precision Medicines, Inc. and Piper Sandler & Co., Guggenheim Securities, LLC and Truist Securities, Inc., as representatives of the several underwriters named therein.

Exhibit 1.1 3,318,585 Shares Pre-Funded Warrants to Purchase 221,238 Shares Praxis Precision Medicines, Inc. UNDERWRITING AGREEMENT March 27, 2024 PIPER SANDLER & CO. GUGGENHEIM SECURITIES, LLC TRUIST SECURITIES, INC. As Representatives of the several Underwriters c/o PIPER SANDLER & CO. 1251 Avenue of the Americas, Floor 7 New York, New York 10020 c/o GUGGENHEIM SECURITIES, LLC 330 Madison Avenue

March 29, 2024 EX-4.1

Form of Pre-funded Warrant (incorporated by reference to Exhibit 4.1 to the Registrant's Current Report on Form 8-K (File No. 001-39620) filed on March 29, 2024

Exhibit 4.1 PRAXIS PRECISION MEDICINES, INC. FORM OF PRE-FUNDED WARRANT TO PURCHASE COMMON STOCK Number of Shares: [ ] (subject to adjustment) Warrant No. [ ] Original Issue Date: April [ ], 2024 Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), hereby certifies that, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, [ ] or i

March 29, 2024 8-K

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): March 27, 2024 PRAXIS PRECISION M

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): March 27, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

March 29, 2024 424B5

PRAXIS PRECISION MEDICINES, INC. 3,318,585 Shares of Common Stock Pre-funded Warrants to Purchase 221,238 Shares of Common Stock

TABLE OF CONTENTS   Filed Pursuant to Rule 424(b)(5)  Registration No. 333-277656 PROSPECTUS SUPPLEMENT (To Prospectus Dated March 12, 2024) PRAXIS PRECISION MEDICINES, INC. 3,318,585 Shares of Common Stock Pre-funded Warrants to Purchase 221,238 Shares of Common Stock We are offering 3,318,585 shares of our common stock at a price of 56.50 per share. Our common stock is listed on The Nasdaq Globa

March 27, 2024 424B5

SUBJECT TO COMPLETION, DATED MARCH 27, 2024

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

March 26, 2024 8-K

Other Events

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): March 26, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

March 8, 2024 CORRESP

PRAXIS PRECISION MEDICINES, INC. 99 High Street, 30th Floor Boston, MA 02110

PRAXIS PRECISION MEDICINES, INC. 99 High Street, 30th Floor Boston, MA 02110 March 8, 2024 Via EDGAR Transmission Securities and Exchange Commission Division of Corporation Finance Office of Life Sciences 100 F Street, N.E. Washington, DC 20549 Attention: Jessica Dickerson Re: Praxis Precision Medicines, Inc. Registration Statement on Form S-3 Filed March 5, 2024 File No. 333-277656 To the address

March 5, 2024 EX-10.17

Non-Employee Director Compensation Policy

PRAXIS PRECISION MEDICINES, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY The purpose of this Non-Employee Director Compensation Policy (the “Policy”) of Praxis Precision Medicines, Inc. (the “Company”) is to provide a total compensation package that enables the Company to attract and retain, on a long-term basis, high-caliber directors who are not employees or officers of the Company or its subs

March 5, 2024 EX-97

recision Medicines, Inc. Policy for Recovery of Erroneously Awarded Compensation

PRAXIS PRECISION MEDICINES, INC. POLICY FOR RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION Praxis Precision Medicines, Inc. (the “Company”) has adopted this Policy for Recovery of Erroneously Awarded Compensation (the “Policy”), effective as of September 19, 2023 (the “Effective Date”). Capitalized terms used in this Policy but not otherwise defined herein are defined in Section 11. 1.Persons Subjec

March 5, 2024 EX-1.2

, dated as of March 5, 2024, by and between Praxis Precision Medicines, Inc. and Jefferies LLC.

Exhibit 1.2 OPEN MARKET SALE AGREEMENTSM March 5, 2024 JEFFERIES LLC 520 Madison Avenue New York, New York 10022 Ladies and Gentlemen: Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time through Jefferies LLC, as sales agent and/or principal (the “Agent”), shares of the Company’s

March 5, 2024 8-K

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): March 5, 2024 PRAXIS PRECISION ME

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): March 5, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

March 5, 2024 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Fourth Quarter and Full-Year 2023 Financial Results Over 3,000 referrals received to date meet pre-qualifying eligibility criteria for ulixacaltamide Phase 3 studies in the Essential3 p

Praxis Precision Medicines Provides Corporate Update and Reports Fourth Quarter and Full-Year 2023 Financial Results Over 3,000 referrals received to date meet pre-qualifying eligibility criteria for ulixacaltamide Phase 3 studies in the Essential3 program for essential tremor (ET); enrollment on track to be completed in 1H 2024 with topline results in 2H 2024 Topline results from the PRAX-628 stu

March 5, 2024 S-3

As filed with the Securities and Exchange Commission on March 5, 2024

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on March 5, 2024 Registration No.

March 5, 2024 S-8

As filed with the Securities and Exchange Commission on March 5, 2024

As filed with the Securities and Exchange Commission on March 5, 2024 Registration No.

March 5, 2024 EX-99.2

CORPORATE OVERVIEW March 2024 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial condi

praxiscorporatedeckmarch CORPORATE OVERVIEW March 2024 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

March 5, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

March 5, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Praxis Precision Medicines, Inc.

March 5, 2024 EX-10.15

Amended and Restated Employment Agreement, dated October 20, 2020, by and between Praxis Precision Medicines, Inc. and

Praxis Precision Medicines, Inc. AMENDED AND RESTATED EMPLOYMENT AGREEMENT for Alex Nemiroff This Amended and Restated Executive Employment Agreement (the “Agreement”) is made between Praxis Precision Medicines, Inc. (the “Company”) and Alex Nemiroff (“Executive”) (collectively, the “Parties”) and is effective as of the closing of the Company’s first underwritten public offering of its equity secu

March 5, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Praxis Precision Medicines, Inc.

March 5, 2024 EX-4.4

Form of Indenture.

  Exhibit 4.4     PRAXIS PRECISION MEDICINES, INC.       INDENTURE   Dated as of , 20       [                               ]   Trustee           TABLE OF CONTENTS   Page   ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.1. Definitions 1 Section 1.2. Other Definitions 4 Section 1.3. Incorporation by Reference of Trust Indenture Act 4 Section 1.4. Rules of Construction 5       ART

February 14, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / Cormorant Asset Management, LP - AMENDMENT NO. 1 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74006W207 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to w

February 14, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / Point72 Asset Management, L.P. Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W207 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the r

February 14, 2024 SC 13G

US74006W2070 / PRAXIS PRECISION MEDICINES INC / Verition Fund Management LLC - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 74006W207 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the Appropriate Box to Desi

February 14, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / EVENTIDE ASSET MANAGEMENT, LLC - SC 13G/A Passive Investment

SC 13G/A 1 sc13gapraxis.htm SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* Praxis Precision Medicines, Inc. (Name of Issuer – as specified in its charter) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W207 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filin

February 14, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / PFM Health Sciences, LP - SC 13G/A Passive Investment

SC 13G/A 1 tm245198d1sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Information Statement Pursuant to Rules 13d-1 and 13d-2 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) 74006W108 (CUSIP Nu

February 14, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / Tri Locum Partners LP - SC 13G/A Passive Investment

SC 13G/A 1 tm245297d1sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 74006W207 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this st

February 14, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / Venrock Healthcare Capital Partners III, L.P. - SC 13G/A Passive Investment

SC 13G/A 1 tm246235d15sc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W207 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this

February 14, 2024 EX-24

POWER OF ATTORNEY

EX-24 2 tm245198d1ex24.htm EXHIBIT 24 Exhibit 24 POWER OF ATTORNEY The undersigned hereby constitutes and appoints Darren Mooney as the undersigned’s true and lawful authorized representative and attorney-in-fact to execute for and on behalf of the undersigned and to file with the United States Securities and Exchange Commission and any other authority: (1) any Forms 3, 4 and 5 in accordance with

February 13, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / Huang James - SC 13G/A Passive Investment

SC 13G/A 1 d788337dsc13ga.htm SC 13G/A Securities and Exchange Commission Washington, D.C. 20549 Schedule 13G (Rule 13d-102) Information to be Included in Statements Filed Pursuant to § 240.13d-1(b), (c) and (d) and Amendments Thereto Filed Pursuant to § 240.13d-2 UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock (Title of C

February 13, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / Avidity Partners Management LP Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

February 9, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / Blackstone Holdings I/II GP L.L.C. - SC 13G/A Passive Investment

SC 13G/A 1 d123880dsc13ga.htm SC 13G/A UNITED STATES 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) December 31, 2023 (Date of Event which Requires Filing of this Stat

February 7, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / ADAGE CAPITAL PARTNERS GP, L.L.C. - PRAXIS PRECISION MEDICINES, INC. Passive Investment

SC 13G/A 1 p24-0330sc13ga.htm PRAXIS PRECISION MEDICINES, INC. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W207 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing

February 6, 2024 SC 13G/A

US74006W2070 / PRAXIS PRECISION MEDICINES INC / KINGDON CAPITAL MANAGEMENT, L.L.C. Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.

February 5, 2024 SC 13G/A

PRAX / Praxis Precision Medicines, Inc. / SPHERA FUNDS MANAGEMENT LTD. - SC 13G/A Passive Investment

SC 13G/A 1 zk2430879.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 2 )* Praxis Precision Medicines, Inc. (Name of Issuer) Common stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

January 31, 2024 EX-99.1

Praxis Precision Medicines, Inc. 2024 Inducement Plan and Forms of Award Agreements thereunder (Incorporated by reference to Exhibit 99.1 to the Registrant’s Registration Statement on Form S-8 (File No. 333-276786) filed with the Securities and Exchange Commission on January 31, 2024).

Exhibit 99.1 PRAXIS PRECISION MEDICINES, INC. 2024 INDUCEMENT PLAN SECTION 1. GENERAL PURPOSE OF THE PLAN; DEFINITIONS The name of the plan is the Praxis Precision Medicines, Inc. 2024 Inducement Plan (as amended from time to time, the “Plan”). The purpose of the Plan is to enhance the ability of Praxis Precision Medicines, Inc. (the “Company”) to attract, retain and motivate persons who are expec

January 31, 2024 S-8

As filed with the Securities and Exchange Commission on January 31, 2024

As filed with the Securities and Exchange Commission on January 31, 2024 Registration No.

January 31, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 CALCULATION OF FILING FEE TABLE Form S-8 (Form Type) Praxis Precision Medicines, Inc.

January 12, 2024 EX-1.1

Underwriting Agreement, dated January 11, 2024, by and among Praxis Precision Medicines, Inc. and Piper Sandler & Co. and Truist Securities, Inc., as representatives of the several underwriters named therein.

Exhibit 1.1 Execution Version 3,168,275 Shares Pre-Funded Warrants to Purchase 1,056,725 Shares Praxis Precision Medicines, Inc. UNDERWRITING AGREEMENT January 11, 2024 PIPER SANDLER & CO. TRUIST SECURITIES, INC. As Representatives of the several Underwriters c/o PIPER SANDLER & CO. 1251 Avenue of the Americas, Floor 7 New York, New York 10020 c/o TRUIST SECURITIES, INC. 3333 Peachtree Road NE, 11

January 12, 2024 EX-4.1

Form of Pre-funded Warrant (incorporated by reference to Exhibit 4.1 to the Registrant's Current Report on Form 8-K (File No. 001-39620) filed on January 12, 2024

Exhibit 4.1 PRAXIS PRECISION MEDICINES, INC. FORM OF PRE-FUNDED WARRANT TO PURCHASE COMMON STOCK Number of Shares: [ ] (subject to adjustment) Warrant No. [ ] Original Issue Date: January [ ], 2024 Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), hereby certifies that, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, [ ] or

January 12, 2024 424B5

Per share

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-260726 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 9, 2023) PRAXIS PRECISION MEDICINES, INC. 3,168,275 Shares of Common Stock Pre-funded Warrants to Purchase 1,056,725 Shares of Common Stock We are offering 3,168,275 shares of our common stock at a price of  $35.50 per share. Our common stock is listed on The Nasdaq

January 12, 2024 8-K

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): January 11, 2024 PRAXIS PRECISION

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): January 11, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

January 11, 2024 8-K

Termination of a Material Definitive Agreement

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): January 10, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

January 10, 2024 424B5

SUBJECT TO COMPLETION, DATED JANUARY 10, 2024

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

January 10, 2024 8-K

Unregistered Sales of Equity Securities, Results of Operations and Financial Condition, Other Events

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): January 4, 2024 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (C

December 7, 2023 424B5

Up to $75,000,000 Common Stock

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-260726 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 9, 2023) Up to $75,000,000 Common Stock We have entered into an Open Market Sale AgreementSM, or the sales agreement, with Jefferies LLC, or Jefferies, relating to the sale of shares of our common stock, par value $0.0001 per share, from time to time, offered by this

December 7, 2023 8-K

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): December 7, 2023 PRAXIS PRECISION

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): December 7, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

December 7, 2023 EX-1.1

Open Market Sale AgreementSM, dated as of December 7, 2023, between Praxis Precision Medicines, Inc. and Jefferies LLC.

Exhibit 1.1 OPEN MARKET SALE AGREEMENTSM December 7, 2023 JEFFERIES LLC 520 Madison Avenue New York, New York 10022 Ladies and Gentlemen: Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time through Jefferies LLC, as sales agent and/or principal (the “Agent”), shares of the Company

December 1, 2023 EX-3.1

Certificate of Amendment to the Amended and Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to the Registrant’s Current Report on Form 8-K (File No. 001-39620) filed with the Securities and Exchange Commission on December 1, 2023)

CERTIFICATE OF AMENDMENT TO AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF PRAXIS PRECISION MEDICINES, INC.

December 1, 2023 8-K

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): November 28, 2023 PRAXIS PRECISIO

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): November 28, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

December 1, 2023 EX-99.1

UNAUDITED SELECTED FINANCIAL DATA (Amounts in thousands, except share and per share data)

UNAUDITED SELECTED FINANCIAL DATA (Amounts in thousands, except share and per share data) Reverse Stock Split On November 28, 2023, at 5:00 p.

November 22, 2023 8-K

Other Events

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): November 20, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

November 7, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 7, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

November 7, 2023 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2023 Financial Results Essential3 study initiated, with over 600 patients engaged in pre-recruitment observational study Elsunersen EMBRAVE study final dose completed, Pra

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2023 Financial Results Essential3 study initiated, with over 600 patients engaged in pre-recruitment observational study Elsunersen EMBRAVE study final dose completed, Praxis seeking FDA advice on advancing development Cash of $101.

November 7, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

November 6, 2023 8-K

Submission of Matters to a Vote of Security Holders

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): November 6, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

October 16, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (RULE 14A-101) Schedule 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (RULE 14A-101) Schedule 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (a

October 4, 2023 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (RULE 14A-101) Schedule 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (RULE 14A-101) Schedule 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (a

October 2, 2023 8-K

Other Events

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): October 2, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (C

August 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

August 9, 2023 EX-99.2

CORPORATE OVERVIEW August 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not l

praxisaugust2023corporat CORPORATE OVERVIEW August 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

August 9, 2023 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2023 Financial Results On track to initiate Phase 3 studies for ulixacaltamide in Q4 2023 after favorable End-of-Phase 2 meeting with FDA PRAX-628 Phase 1 study showed co

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2023 Financial Results On track to initiate Phase 3 studies for ulixacaltamide in Q4 2023 after favorable End-of-Phase 2 meeting with FDA PRAX-628 Phase 1 study showed consistent safety profile and target engagement in measures of qEEG activity at all doses with first administration Praxis will hold an R&D Portfolio Day on October 2 Cash of $124.

August 9, 2023 8-K

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): August 7, 2023 PRAXIS PRECISION M

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): August 7, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

July 3, 2023 SC 13G/A

PRAX / Praxis Precision Medicines Inc / Cormorant Global Healthcare Master Fund, LP Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock (Title of Class of Securities) 74006W108 (CUSIP Number) June 21, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

July 3, 2023 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT This Joint Filing Agreement, dated as of July 3, 2023, is by and among Cormorant Global Healthcare Master Fund, LP, Cormorant Global Healthcare GP, LLC, Cormorant Asset Management, LP and Bihua Chen (collectively, the “Filers”). Each of the Filers may be required to file with the United States Securities and Exchange Commission a statement on Schedule 13D and/or

June 30, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / ADAGE CAPITAL PARTNERS GP, L.L.C. - PRAXIS PRECISION MEDICINES, INC. Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) June 21, 2023 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pur

June 30, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / Venrock Healthcare Capital Partners III, L.P. - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) June 21, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designat

June 28, 2023 SC 13D/A

PRAX / Praxis Precision Medicines Inc / Velan Capital Investment Management LP - AMENDMENT NO. 1 TO THE SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) (Amendment No. 1)1 Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) Ada

June 27, 2023 SC 13G/A

PRAX / Praxis Precision Medicines Inc / SPHERA FUNDS MANAGEMENT LTD. - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. 1 )* Praxis Precision Medicines, Inc. (Name of Issuer) Common stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) June 16, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedu

June 26, 2023 EX-99.1

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)

EXHIBIT 99.1 JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k) The undersigned acknowledge and agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned and that all subsequent amendments to this statement on Schedule 13G shall be filed on behalf of each of the undersigned without the necessity of filing additional joint filing agreements. The undersigned ackn

June 26, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / Point72 Asset Management, L.P. - PRAXIS PRECISION MEDICINES, INC. Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) June 21, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pur

June 22, 2023 EX-99

Joint Filing Agreement by and among the Reporting Persons.

Exhibit 1 Joint Filing Agreement Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of shares of Praxis Precision Medicines, Inc.

June 22, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / SPHERA FUNDS MANAGEMENT LTD. - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) June 16, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule

June 20, 2023 424B5

Per share

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(5)  Registration No. 333-260726 PROSPECTUS SUPPLEMENT (To Prospectus Dated February 9, 2023) PRAXIS PRECISION MEDICINES, INC. 55,150,000 Shares of Common Stock Pre-funded Warrants to Purchase 7,050,000 Shares of Common Stock We are offering 55,150,000 shares of our common stock. Our common stock is listed on The Nasdaq Global Select Market, or Nasda

June 20, 2023 EX-4.1

Form of Pre-funded Warrant.

Exhibit 4.1 Form of Pre-Funded Warrant Praxis Precision Medicines, Inc. PRAXIS PRECISION MEDICINES, INC. WARRANT TO PURCHASE SHARES OF COMMON STOCK Number of Shares: [ · ] (subject to adjustment) Warrant No. PFW – [ · ] Original Issue Date: June [ · ], 2023 Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), hereby certifies that, for good and valuable consideration, the rece

June 20, 2023 8-K

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 15, 2023 PRAXIS PRECISION ME

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 15, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

June 20, 2023 EX-1.1

Underwriting Agreement, dated June 15, 2023, by and among Praxis Precision Medicines, Inc. and Piper Sandler & Co. and Truist Securities, Inc., as representatives of the several underwriters named therein.

Exhibit 1.1 Execution Version 55,150,000 Shares Pre-Funded Warrants to Purchase 7,050,000 Shares Praxis Precision Medicines, Inc. UNDERWRITING AGREEMENT June 15, 2023 PIPER SANDLER & CO. TRUIST SECURITIES, INC. As Representatives of the several Underwriters c/o PIPER SANDLER & CO. 1251 Avenue of the Americas, Floor 7 New York, New York 10020 c/o TRUIST SECURITIES, INC. 10 Hudson Yards, 37th Floor

June 16, 2023 8-K

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 15, 2023 PRAXIS PRECISION ME

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 15, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

June 16, 2023 FWP

Issuer Free Writing Prospectus

Issuer Free Writing Prospectus Filed Pursuant to Rule 433 Dated June 15, 2023 Relating to Preliminary Prospectus Supplement Dated June 15, 2023 Registration Statement No.

June 15, 2023 424B5

SUBJECT TO COMPLETION, DATED JUNE 15, 2023

TABLE OF CONTENTS The information in this preliminary prospectus supplement is not complete and may be changed.

June 14, 2023 8-K

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 12, 2023 PRAXIS PRECISION ME

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 12, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

June 9, 2023 8-K

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 9, 2023 PRAXIS PRECISION MED

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 9, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Comm

June 5, 2023 DEFA14A

United States Securities and Exchange Commission Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

United States Securities and Exchange Commission Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ¨ Check the appropriate box: ¨ Preliminary Proxy Statement ¨ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ¨ Definitive Proxy State

May 11, 2023 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2023 Financial Results Ulixacaltamide essential tremor End-of-Phase 2 meeting with FDA scheduled for June 2023 PRAX-628 Phase 1 study results support preclinical profile i

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2023 Financial Results Ulixacaltamide essential tremor End-of-Phase 2 meeting with FDA scheduled for June 2023 PRAX-628 Phase 1 study results support preclinical profile indicating potential for best-in-class-efficacy for focal epilepsy Cash and investments of $85.

May 11, 2023 EX-99.2

CORPORATE OVERVIEW May 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limi

praxismay2023corporatepr CORPORATE OVERVIEW May 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

May 11, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

May 11, 2023 8-K

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): May 11, 2023 PRAXIS PRECISION MED

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): May 11, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Comm

April 28, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

April 28, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

April 27, 2023 EX-99.1

JOINT FILING AGREEMENT

Exhibit 1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the Common Stock, $0.

April 27, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / Tri Locum Partners LP - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 74006W108 (CUSIP Number) April 17, 2023 (Date of Event Which Requires Filing of this statement) Check the appropriate box to designa

April 17, 2023 EX-99.1

CORPORATE OVERVIEW April 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not li

praxisapril2023corporate CORPORATE OVERVIEW April 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

April 17, 2023 8-K

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): April 17, 2023 PRAXIS PRECISION M

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): April 17, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

March 21, 2023 EX-10.1

, dated as of March 21, 2023, by and between the Registrant and Nicole Sweeny (incorporated by reference to Exhibit 10.1 to the Registrant's Current Report on Form 8-K (File No. 001-39620) filed on March 21, 2023)

Exhibit 10.1 Praxis Precision Medicines, Inc. 99 High Street, 30th Floor Boston, MA 02110 www.praxismedicines.com Privileged and Confidential March 21, 2023 Nicole Sweeny Re: Separation Letter Agreement Dear Nicole, This letter confirms (1) the termination of your employment relationship with Praxis Precision Medicines, Inc. (“Praxis”), and (2) your separation from Praxis (the “Agreement”). This A

March 21, 2023 8-K

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): March 17, 2023 PRAXIS PRECISION M

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): March 17, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

March 20, 2023 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D (including additional amendments thereto) with respect to the common stock, par value $0.0001 per share, of Praxis Precision Medicines, Inc., a Delaware corporat

March 20, 2023 SC 13D

PRAX / Praxis Precision Medicines Inc / Velan Capital Investment Management LP - SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D (Rule 13d-101) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO § 240.13d-2(a) (Amendment No. )1 Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) Adam

March 10, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / Huang James - SC 13G Passive Investment

SC 13G 1 d476773dsc13g.htm SC 13G Securities and Exchange Commission Washington, D.C. 20549 Schedule 13G (Rule 13d-102) Information to be Included in Statements Filed Pursuant to § 240.13d-1(b), (c) and (d) and Amendments Thereto Filed Pursuant to § 240.13d-2 UNDER THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock (Title of Class o

March 10, 2023 8-K

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): March 10, 2023 PRAXIS PRECISION M

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): March 10, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

March 10, 2023 EX-99

JOINT FILING AGREEMENT

EX-99 Exhibit 99 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that they are jointly filing this statement on Schedule 13G.

March 3, 2023 EX-99.2

Communications between the U.S. Food and Drug Administration and Praxis Precision Medicines, Inc., dated March 12, 2021

March 3, 2023 8-K

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): March 3, 2023 PRAXIS PRECISION ME

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): March 3, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

March 3, 2023 EX-99.1

ULIXACALTAMIDE (PRAX-944) ESSENTIAL1 ESSENTIAL TREMOR TOPLINE RESULTS March 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operati

essential1toplineslides ULIXACALTAMIDE (PRAX-944) ESSENTIAL1 ESSENTIAL TREMOR TOPLINE RESULTS March 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

February 14, 2023 SC 13G/A

PRAX / Praxis Precision Medicines Inc / Point72 Asset Management, L.P. - SCHEDULE 13G/A, AMENDMENT #2 Passive Investment

SC 13G/A 1 pt7213gaa.htm SCHEDULE 13G/A, AMENDMENT #2 240.13d-102 Schedule 13G - Information to be included in statements filed pursuant to 240.13d-1(b), (c), and (d) and amendments thereto filed pursuant to 240.13d-2. Securities and Exchange Commission, Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* (Name of Issuer) Praxis Precision Medicines, Inc

February 14, 2023 SC 13G/A

PRAX / Praxis Precision Medicines Inc / PFM Health Sciences, LP - SC 13G/A Passive Investment

SC 13G/A 1 tm235475d10sc13g.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Information Statement Pursuant to Rules 13d-1 and 13d-2 Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer) Common stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Nu

February 14, 2023 SC 13G/A

PRAX / Praxis Precision Medicines Inc / EVENTIDE ASSET MANAGEMENT, LLC - SC 13G/A Passive Investment

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 – as specified in its charter) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the approp

February 14, 2023 EX-99.1

JOINT FILING AGREEMENT

EX-99.1 2 pt7213gab.htm JOINT FILING AGREEMENT Exhibit 99.1 JOINT FILING AGREEMENT The undersigned hereby agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and that all subsequent amendments to this statement on Schedule 13G may be filed on behalf

February 10, 2023 SC 13G/A

PRAX / Praxis Precision Medicines Inc / Vida Ventures, LLC - SC 13G/A Passive Investment

SC 13G/A 1 d460858dsc13ga.htm SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* PRAXIS PRECISION MEDICINES, INC. (Name of Issuer) Common Stock, $0.0001 par value per share (Title of Class of Securities) 74006W108 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Stat

February 9, 2023 SC 13G/A

PRAX / Praxis Precision Medicines Inc / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv01700-praxisprecisionmedic.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 1)* Name of issuer: Praxis Precision Medicines Inc. Title of Class of Securities: Common Stock CUSIP Number: 74006W108 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriat

February 7, 2023 POS AM

As filed with the Securities and Exchange Commission on February 7, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 7, 2023 Registration No.

February 7, 2023 8-K

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): February 7, 2023 PRAXIS PRECISION

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): February 7, 2023 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

February 7, 2023 EX-99.2

CORPORATE OVERVIEW February 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not

praxisfebruary2023corpor CORPORATE OVERVIEW February 2023 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

February 7, 2023 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) Praxis Precision Medicines, Inc.

February 7, 2023 EX-1.2

Open Market Sale Agreement, dated as of November 3, 2021 between Praxis Precision Medicines, Inc. and Jefferies LLC, as amended.

Exhibit 1.2 OPEN MARKET SALE AGREEMENTSM November 3, 2021 JEFFERIES LLC 520 Madison Avenue New York, New York 10022 Ladies and Gentlemen: Praxis Precision Medicines, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time through Jefferies LLC, as sales agent and/or principal (the “Agent”), shares of the Company

February 7, 2023 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Fourth Quarter and Full Year 2022 Financial Results Ulixacaltamide (PRAX-944) Phase 2b Essential1 study topline results for essential tremor expected in 1Q23; Praxis to enter quiet peri

Praxis Precision Medicines Provides Corporate Update and Reports Fourth Quarter and Full Year 2022 Financial Results Ulixacaltamide (PRAX-944) Phase 2b Essential1 study topline results for essential tremor expected in 1Q23; Praxis to enter quiet period following market close on Thursday, February 9 Topline results expected for each of three clinical-stage epilepsy programs in 2023 – PRAX-222 first-in-patient EMBRAVE Study safety data mid-2023, PRAX-628 first-in-human Phase 1 data mid-2023, PRAX-562 Phase 2 EMBOLD Study results in 2H23 Cash and investments of $100.

February 7, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

February 7, 2023 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Praxis Precision Medicines, Inc.

February 7, 2023 EX-10.13

Amended and Restated Employment Agreement, dated May 13, 2021, by and between Praxis Precision Medicines, Inc. and Timothy Kelly

Praxis Precision Medicines, Inc. EMPLOYMENT AGREEMENT for Chief Financial Officer This Executive Employment Agreement (the “Agreement”) is made between Praxis Precision Medicines, Inc. (the “Company”) and Timothy E. Kelly (“Executive”) (collectively, the “Parties”) and is effective upon the Executive’s first date of employment with the Company, on May 25, 2021 (the “Effective Date”). Whereas, the

February 7, 2023 S-8

As filed with the Securities and Exchange Commission on February 7, 2023

As filed with the Securities and Exchange Commission on February 7, 2023 Registration No.

February 7, 2023 POSASR

As filed with the Securities and Exchange Commission on February 7, 2023

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on February 7, 2023 Registration No.

February 2, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / Avidity Partners Management LP Passive Investment

SC 13G 1 d993111513g.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) January 25, 2023 (Date of Event Which Requires Filing of this Statement) Check the ap

January 25, 2023 SC 13G

PRAX / Praxis Precision Medicines Inc / KINGDON CAPITAL MANAGEMENT, L.L.C. Passive Investment

SC 13G 1 d992903713g.htm UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No.)* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) December 14, 2022 (Date of Event Which Requires Filing of this Statement) Check the a

November 28, 2022 EX-99.1

CORPORATE OVERVIEW November 2022 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not

CORPORATE OVERVIEW November 2022 2 This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

November 28, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

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): November 28, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

November 9, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

November 9, 2022 EX-99.2

CORPORATE OVERVIEW November 2022 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not

CORPORATE OVERVIEW November 2022 2 This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

November 9, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): November 9, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

November 9, 2022 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2022 Financial Results PRAX-944 Phase 2b Essential1 study topline results for essential tremor expected in 1Q23 PRAX-222 EMBRAVE study for SCN2A-DEE to initiate in 4Q22; t

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2022 Financial Results PRAX-944 Phase 2b Essential1 study topline results for essential tremor expected in 1Q23 PRAX-222 EMBRAVE study for SCN2A-DEE to initiate in 4Q22; topline results for initial dose cohort expected in 2023 PRAX-628 Phase 1 healthy volunteer study to initiate in 4Q22; focal epilepsy study planned for 2023 Cash and investments of $123.

September 7, 2022 8-K

Other Events

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): September 2, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

August 12, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): August 10, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (C

August 12, 2022 EX-99.1

August 10, 2022

August 10, 2022 Dear Dean and Marcio, I hereby tender my resignation from the board of directors of Praxis Precision Medicines, effective as of August 12, 2022.

August 8, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

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): August 8, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

August 8, 2022 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2022 Financial Results PRAX-944 Phase 2b Essential1 Study topline results expected in 4Q22; primary endpoint updated to efficacy PRAX-562 Phase 1 study completed, confirm

Praxis Precision Medicines Provides Corporate Update and Reports Second Quarter 2022 Financial Results PRAX-944 Phase 2b Essential1 Study topline results expected in 4Q22; primary endpoint updated to efficacy PRAX-562 Phase 1 study completed, confirming biomarker change and potential for wide therapeutic window Cash and investments of $165.

August 8, 2022 EX-99.2

CORPORATE OVERVIEW August 2022 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not l

CORPORATE OVERVIEW August 2022 2 This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

August 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

July 26, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

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): July 21, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Com

July 26, 2022 EX-10.1

Transition Agreement dated July 26, 2022, by and between Praxis Precision Medicines, Inc. and Bernard Ravina

Praxis Precision Medicines Incorporated One Broadway, 16th Floor, Cambridge, MA 02142 www.

July 11, 2022 8-K/A

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

June 17, 2022 EX-99.1

JOINT FILING AGREEMENT

EXHIBIT 99.1 JOINT FILING AGREEMENT The undersigned hereby agree that the Statement on Schedule 13G filed herewith (and any amendments thereto), relating to the common stock of Praxis Precision Medicines, Inc., a Delaware corporation, is being filed jointly with the Securities and Exchange Commission pursuant to Rule 13d-1(c) under the Securities Exchange Act of 1934, as amended, on behalf of each

June 17, 2022 SC 13G

PRAX / Praxis Precision Medicines Inc / PFM Health Sciences, LP - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G (Rule 13d-102) Information Statement Pursuant to Rules 13d-1 and 13d-2 Under the Securities Exchange Act of 1934 (Amendment No. )* Praxis Precision Medicines, Inc. (Name of Issuer) Common stock, $0.0001 par value per share (Title of Class of Securities) 74006W108 (CUSIP Number) June 7, 2022 (Date of Event Which Re

June 6, 2022 8-K

Other Events

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 6, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Comm

June 1, 2022 8-K

Submission of Matters to a Vote of Security Holders

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): May 26, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Comm

May 23, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

May 23, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

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): May 21, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Comm

May 9, 2022 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2022 Financial Results PRAX-944 demonstrated clinically meaningful functional improvement in essential tremor patients in Part B of Phase 2a study PRAX-114 Phase 2/3 monot

Praxis Precision Medicines Provides Corporate Update and Reports First Quarter 2022 Financial Results PRAX-944 demonstrated clinically meaningful functional improvement in essential tremor patients in Part B of Phase 2a study PRAX-114 Phase 2/3 monotherapy MDD Aria Study completed; topline results expected in June 2022 Epilepsy Day showcases largest targeted epilepsy portfolio in industry Cash and investments of $222.

May 9, 2022 EX-99.2

CORPORATE OVERVIEW May 2022 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limi

CORPORATE OVERVIEW May 2022 2 This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

May 9, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

May 9, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

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): May 9, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Commi

May 9, 2022 EX-99.3

PRAX-944 ESSENTIAL TREMOR Phase 2a Part B Topline Results May 9, 2022 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our b

PRAX-944 ESSENTIAL TREMOR Phase 2a Part B Topline Results May 9, 2022 2 Forward-looking statements This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

April 29, 2022 8-K

Other Events

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): April 28, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

April 27, 2022 EX-99.1

EPILEPSY DAY APRIL 27, 2022 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditi

EPILEPSY DAY APRIL 27, 2022 2 Forward-looking statements This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

April 27, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

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): April 27, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (Co

April 14, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

April 14, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy State

February 28, 2022 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Fourth Quarter and Full Year 2021 Financial Results PRAX-114 Phase 2/3 monotherapy MDD Aria Study topline results expected in June 2022 PRAX-944 Phase 2a ET topline results expected in

Praxis Precision Medicines Provides Corporate Update and Reports Fourth Quarter and Full Year 2021 Financial Results PRAX-114 Phase 2/3 monotherapy MDD Aria Study topline results expected in June 2022 PRAX-944 Phase 2a ET topline results expected in May 2022; to include open-label and placebo-controlled withdrawal data PRAX-222 seamless study in SCN2A-DEE expected to initiate in 2Q22 Cash and investments of $275.

February 28, 2022 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Praxis Precision Medicines, Inc.

February 28, 2022 EX-4.3

Description of Securities of Praxis Precision Medicines, Inc. (incorporated by reference to Exhibit 4.3 to the Registrant's Annual Report on Form 10-K (File No. 001-39620) filed on February 28, 2022)

Exhibit 4.3 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934, AS AMENDED The common stock, par value $0.0001 per share (?common stock?), of Praxis Precision Medicines, Inc. (?Praxis,? ?we,? or ?our?) is registered under Section 12 of the Securities Exchange Act of 1934, as amended. The following description sets forth certain gener

February 28, 2022 EX-10.13

Amended and Restated Employment Agreement, dated October 20, 2020, by and between Praxis Precision Medicines, Inc. and Bernard Ravina

PRAXIS PRECISION MEDICINES, INC. AMENDED AND RESTATED EMPLOYMENT AGREEMENT for Bernard Ravina This Amended and Restated Executive Employment Agreement (the ?Agreement?) is made between Praxis Precision Medicines, Inc. (the ?Company?) and Bernard Ravina (?Executive?) (collectively, the ?Parties?) and is effective as of the closing of the Company?s first underwritten public offering of its equity se

February 28, 2022 EX-10.14

Amended and Restated Employment Agreement, dated October 20, 2020, by and between Praxis Precision Medicines, Inc. and Nicole Sweeny

PRAXIS PRECISION MEDICINES, INC. AMENDED AND RESTATED EMPLOYMENT AGREEMENT for Nicole Sweeny This Amended and Restated Executive Employment Agreement (the ?Agreement?) is made between Praxis Precision Medicines, Inc. (the ?Company?) and Nicole Sweeny (?Executive?) (collectively, the ?Parties?) and is effective as of the closing of the Company?s first underwritten public offering of its equity secu

February 28, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

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): February 28, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

February 28, 2022 S-8

As filed with the Securities and Exchange Commission on February 28, 2022

As filed with the Securities and Exchange Commission on February 28, 2022 Registration No.

February 28, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K (Mark One) ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

February 28, 2022 EX-10.12

Amended and Restated Employment Agreement, dated October 20, 2020, by and between Praxis Precision Medicines, Inc. and Marcio Souza (incorporated by reference to Exhibit 10.12 to the Registrant's Annual Report on Form 10-K (File No. 001-39620) filed on February 28, 2022)

PRAXIS PRECISION MEDICINES, INC. AMENDED AND RESTATED EMPLOYMENT AGREEMENT for Marcio Souza This Amended and Restated Executive Employment Agreement (the ?Agreement?) is made between Praxis Precision Medicines, Inc. (the ?Company?) and Marcio Souza (?Executive?) (collectively, the ?Parties?) and is effective as of the closing of the Company?s first underwritten public offering of its equity securi

February 28, 2022 EX-10.16

Non-Employee Director Compensation Policy

PRAXIS PRECISION MEDICINES, INC. NON-EMPLOYEE DIRECTOR COMPENSATION POLICY The purpose of this Non-Employee Director Compensation Policy (the ?Policy?) of Praxis Precision Medicines, Inc. (the ?Company?) is to provide a total compensation package that enables the Company to attract and retain, on a long-term basis, high-caliber directors who are not employees or officers of the Company or its subs

February 28, 2022 EX-99.2

PAGE 1CONFIDENTIAL C O R P O R A T E OVERVIEW F E B R U A R Y 2 0 2 2 PAGE 2CONFIDENTIAL Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995

PAGE 1CONFIDENTIAL C O R P O R A T E OVERVIEW F E B R U A R Y 2 0 2 2 PAGE 2CONFIDENTIAL Forward-looking statements This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

February 14, 2022 EX-99.1

JOINT FILING AGREEMENT

Exhibit 99.1 JOINT FILING AGREEMENT The undersigned hereby agree that the foregoing statement on Schedule 13G is filed on behalf of each of the undersigned in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, and that all subsequent amendments to this statement on Schedule 13G may be filed on behalf of each of the undersigned without the necessi

February 14, 2022 SC 13G/A

PRAX / Praxis Precision Medicines Inc / Point72 Asset Management, L.P. - SCHEDULE 13G (AMENDMENT NO. 1) Passive Investment

240.13d-102 Schedule 13G - Information to be included in statements filed pursuant to 240.13d-1(b), (c), and (d) and amendments thereto filed pursuant to 240.13d-2. Securities and Exchange Commission, Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* (Name of Issuer) Praxis Precision Medicines, Inc. (Title of Class of Securities) Common Stock, Par Val

February 14, 2022 SC 13G/A

PRAX / Praxis Precision Medicines Inc / EVENTIDE ASSET MANAGEMENT, LLC - SC 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Praxis Precision Medicines, Inc. (Name of Issuer ? as specified in its charter) Common Stock, $0.0001 par value (Title of Class of Securities) 74006W108 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Statement) Check the appropriate box

February 11, 2022 SC 13G/A

PRAX / Praxis Precision Medicines Inc / Blackstone Holdings I/II GP L.L.C. - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* Praxis Precision Medicines, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 74006W108 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Statement) Check the appropriate

February 10, 2022 SC 13G

PRAX / Praxis Precision Medicines Inc / VANGUARD GROUP INC - SCHEDULE 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 Name of issuer: Praxis Precision Medicines Inc. Title of Class of Securities: Common Stock CUSIP Number: 74006W108 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is filed: ??Rule 13

January 10, 2022 EX-99.1

PAGE 1 CONFIDENTIAL CORPORATE OVERVIEW JANUARY 2 0 2 2 PAGE 1 PAGE 2 CONFIDENTIAL Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relatin

Exhibit 99.1 PAGE 1 CONFIDENTIAL CORPORATE OVERVIEW JANUARY 2 0 2 2 PAGE 1 PAGE 2 CONFIDENTIAL Forward-looking statements This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current

January 10, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

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): January 10, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (

January 7, 2022 EX-3.1

Amended and Restated Bylaws of Praxis Precision Medicines, Inc. (incorporated by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K (File No. 001-39620) filed on January 7, 2022).

Exhibit 3.1 AMENDED AND RESTATED BYLAWS OF PRAXIS PRECISION MEDICINES, INC. (the ?Corporation?) ARTICLE I Stockholders SECTION 1. Annual Meeting. The annual meeting of stockholders (any such meeting being referred to in these Bylaws as an ?Annual Meeting?) shall be held at the hour, date and place within or without the United States which is fixed by the Board of Directors, which time, date and pl

January 7, 2022 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

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): January 5, 2022 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation) (C

December 17, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Other Events

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): December 17, 2021 PRAXIS PRECISION MEDICINES, INC. (Exact name of registrant as specified in its charter) Delaware 001-39620 47-5195942 (State or other jurisdiction of incorporation)

December 17, 2021 EX-99.1

Movement Disorder Day FRIDAY, DECEMBER 17, 2021 2 This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, in

Movement Disorder Day FRIDAY, DECEMBER 17, 2021 2 This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

November 3, 2021 S-3ASR

As filed with the Securities and Exchange Commission on November 3, 2021

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on November 3, 2021 Registration No.

November 3, 2021 EX-1.2

Open Market Sale Agreement, dated as of November 3, 2021 between Praxis Precision Medicines, Inc. and Jefferies LLC

Exhibit 1.2 OPEN MARKET SALE AGREEMENTSM November 3, 2021 JEFFERIES LLC 520 Madison Avenue New York, New York 10022 Ladies and Gentlemen: Praxis Precision Medicines, Inc., a Delaware corporation (the ?Company?), proposes, subject to the terms and conditions stated herein, to issue and sell from time to time through Jefferies LLC, as sales agent and/or principal (the ?Agent?), shares of the Company

November 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-39620 PRAXIS PRECISION MEDICINES, INC.

November 3, 2021 EX-99.1

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2021 Financial Results Enrollment on track for 1H22 topline results for PRAX-114 Phase 2/3 monotherapy MDD Aria Study and for PRAX-114 Phase 2 dose-ranging MDD Acapella St

Praxis Precision Medicines Provides Corporate Update and Reports Third Quarter 2021 Financial Results Enrollment on track for 1H22 topline results for PRAX-114 Phase 2/3 monotherapy MDD Aria Study and for PRAX-114 Phase 2 dose-ranging MDD Acapella Study PRAX-114 Phase 2 studies in post-traumatic stress disorder and essential tremor (ET), PRAX-562 Phase 2 study in rare adult cephalgias expected to initiate in 4Q21 Preliminary results for PRAX-944 Phase 2a study for treatment of ET expected in 4Q21 First patient enrolled in PRAX-944 Phase 2b Essential1 Study for treatment of ET; topline results expected in 2H22 Cash and investments of $314.

November 3, 2021 EX-4.3

Form of Indenture.

Exhibit 4.3 PRAXIS PRECISION MEDICINES, INC. INDENTURE Dated as of , 20 [] Trustee TABLE OF CONTENTS Page ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.1. Definitions 1 Section 1.2. Other Definitions 4 Section 1.3. Incorporation by Reference of Trust Indenture Act 4 Section 1.4. Rules of Construction 5 ARTICLE II. THE SECURITIES 5 Section 2.1. Issuable in Series 5 Section 2.2.

November 3, 2021 EX-99.2

PAGE 1 3 Q 2 0 2 1 CORPORATE UPDATE N o v e m b e r 2 0 2 1 PAGE 2 Forward-looking statements This presentation may contain “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our busine

PAGE 1 3 Q 2 0 2 1 CORPORATE UPDATE N o v e m b e r 2 0 2 1 PAGE 2 Forward-looking statements This presentation may contain ?forward-looking statements? within the meaning of the Private Securities Litigation Reform Act of 1995 relating to our business, operations, and financial conditions, including but not limited to express or implied statements regarding the current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, our development plans, our preclinical and clinical results and other future conditions.

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