Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 ☐ 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 001-36576 Marinus Pharmaceuticals, Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction ...

Exhibit 99.1 "We are thrilled to announce we have exceeded the enrollment threshold required to conduct an interim analysis in the Phase 3 RAISE trial in refractory status epilepticus, a life-threatening condition," said Scott Braunstein, M.D., Chairman and Chief Executive Officer of Marinus. "With over 90 patients now randomized following several months of increasingly strong enrollment trends, we are on track to announce topline data in the second quarter, assuming efficacy criteria for the interim analys ...

Marinus Pharmaceuticals, Inc. (NASDAQ:MRNS) Q3 2023 Earnings Conference Call November 7, 2023 8:30 AM ET Company Participants Sonya Weigle - SVP, IR Scott Braunstein - CEO, President & Chairman Christina Shafer - Chief Commercial Officer Joseph Hulihan - Chief Medical Officer Steven Pfanstiel - COO, CFO & Treasurer Thomas Lyons - Chief Business Officer Conference Call Participants Brian Abrahams - RBC Capital Markets Joseph Thome - TD Cowen Joon Lee - Truist Securities Andrew Tsai - Jefferies Marc Goodman - ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ 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 001-36576 Registrant's telephone number, including area code: (484) 801-4670 Securities registered pursuant to Section 12 ...

Marinus Pharmaceuticals, Inc. (NASDAQ:MRNS) Q2 2023 Earnings Conference Call August 10, 2023 8:30 AM ET Company Participants Sonia Weigle - SVP, IR, HR, and Corporate Affairs Scott Braunstein - Chairman and CEO Christy Shafer - CCO Joseph Hulihan - CMO Steven E. Pfanstiel - CFO and COO Conference Call Participants Brian Abrahams - RBC Capital Markets Joseph Thome - TD Cowen Andrew Tsai - Jefferies Charles Duncan - Cantor Fitzgerald Joon Lee - Truist Securities Marc Goodman - Leerink Partners Douglas Tsao - ...

Corporate Presentation August 2023 Safe Harbor Statement To the extent that statements contained in this presentation are not descriptions of historical facts regarding Marinus, they are forward-looking statements reflecting the current beliefs and expectations of management made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Words such as "may", "will", "expect", "anticipate", "estimate", "intend", "believe", and similar expressions (as well as other words o ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ 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 001-36576 MARINUS PHARMACEUTICALS, INC. (Exact name of registrant as specified in its charter) Delaware 20-0198082 (State or o ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q ☒ 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 001-36576 MARINUS PHARMACEUTICALS, INC. (Exact name of registrant as specified in its charter) Delaware 20-0198082 (State or ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 ☐ 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 001-36576 Marinus Pharmaceuticals, Inc. (Exact name of registrant as specified in its charter) Delaware 20-0198082 (State or other ju ...