UNITED STATES __________________________________________________ __________________________________________________ __________________________________________________ __________________________________ SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 ACT OF 1934 For the tra ...

Neurogene Reports Second Quarter 2024 Financial Results and Highlights Recent Updates NGN-401 gene therapy for Rett syndrome received RMAT designation from FDA based on preliminary clinical evidence indicating the potential to address unmet medical needs NGN-401 selected for FDA START Program, also designed to accelerate development Interim NGN-401 efficacy data from Cohort 1 remains on track for 4Q:24 NEW YORK – August 9, 2024 – Neurogene Inc. (Nasdaq: NGNE), a clinical-stage company founded to bring life- ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 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 ACT OF 1934 For the transition period from ________ to ________ Commission file number: 001-36327 __________ ...

Neurogene Reports First Quarter 2024 Financial Results and Highlights Recent Updates Presented favorable safety data from Phase 1/2 NGN-401 gene therapy trial for Rett syndrome at ASGCT Annual Meeting Received Australian HREC approval for NGN-401 trial Remains on track to provide interim NGN-401 efficacy data from Cohort 1 in 4Q:24 Strong balance sheet with cash runway into 2H:26 NEW YORK – May 10, 2024 – Neurogene Inc. (Nasdaq: NGNE), a clinical-stage company founded to bring life-changing genetic medicine ...

Exhibit 99.1 Neurogene Reports Fourth Quarter and Full Year 2023 Financial Results and Highlights Recent Updates Expanded Phase 1/2 gene therapy trial for Rett syndrome to inform future registrational study design; Company remains on track to share interim clinical data in 4Q:24 Strong financial position with runway into 2H:26 following reverse merger and private financing in December 2023 Additional Corporate Updates Fourth Quarter and Full Year 2023 Financial Results Upcoming Events NEW YORK – March 18, 2 ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K __________________________________ (Mark One) x 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 o 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 001-36327 __________________________________ Neurogene Inc. ________________________ ...

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 ACT OF 1934 For the transition period from ________ to ________ Commission file number: 001-36327 ________ ...

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 ACT OF 1934 For the transition period from ________ to ________ Commission file number: 001-36327 _____________ ...

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 ACT OF 1934 For the transition period from ________ to ________ Commission file number: 001-36327 ____________ ...

Table of Contents OR UNITED STATES SECURITIES AND EXCHANGE COMMISSION ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Washington, D.C. 20549 _________________________ For the transition period from to FORM 10-K _________________________ Commission file number: 001-36327 _________________________ (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 Securities registered pursuant ...