NeuroBo Pharmaceuticals Reports Third Quarter 2023 Financial Results and Provides Corporate Update DA-1726 Phase 1 IND Filing Expected by Year End 2023 Board Strengthened with Recent Appointment of Industry Veteran, Jame

NeuroBo Pharmaceuticals Reports Third Quarter 2023 Financial Results and Provides Corporate Update

DA-1726 Phase 1 IND Filing Expected by Year End 2023

Board Strengthened with Recent Appointment of Industry Veteran, James P. Tursi, M.D.

Cash and Cash Equivalents of $25.8 Million, Expected to Fund the Company Into the Fourth Quarter of 2024, Through Multiple Potential Value Creating Milestones

BOSTON, November 13, 2023 - NeuroBo Pharmaceuticals, Inc. (Nasdaq: NRBO), a clinical-stage biotechnology company on a quest to transform cardiometabolic diseases, today announced financial results for the third quarter ended September 30, 2023 and provided a corporate strategic update.

"During the third quarter, we continued to advance the clinical development of our two, next generation cardiometabolic assets, which address the significant nonalcoholic steatohepatitis (NASH) and obesity markets," stated Hyung Heon Kim, President and Chief Executive Officer of NeuroBo. "Of note, we received first site Institutional Review Board (IRB) approval and subsequently dosed the first patient in our Phase 2a clinical trial of DA-1241, a novel G-Protein-Coupled Receptor 119 (GPR119) agonist, for the treatment of NASH, marking the achievement of a significant milestone for our most advanced asset and reflecting our strong commitment to the timely development of our pipeline programs. The two-part design of this study provides us with the option for an interim analysis, expected in the first half of next year and we anticipate the full data readout in the second half of 2024. Based on strength of the data from our Phase 1a/1b studies in healthy volunteers and patients with Type 2 diabetes (T2D), in which DA-1241 demonstrated a beneficial effect on liver inflammation and fibrosis, lipid metabolism and glucose metabolism, and was shown to be safe and well tolerated, we believe that the mechanism of action of this promising cardiometabolic asset will translate into a safe and effective treatment for NASH, a disease with no current treatment options.

"As it relates to our second asset, DA-1726, a novel oxyntomodulin (OXM) analogue which acts as a glucagon-like peptide-1 receptor (GLP1R) and glucagon receptor (GCGR) dual agonist, DA-1726 has shown highly encouraging results in preclinical testing including reduced food intake via activation of the GLP-1 receptor as well as increased energy expenditure via glucagon activation. Specifically, in obese mouse models, DA-1241 elicits similar weight loss efficacy compared to Tirzepatide, even while consuming more food, and has exhibited superior weight loss compared to Semaglutide, while also showing further improvements in hepatic steatosis, inflammation, and fibrosis. As a result, we believe DA-1726 will be an effective therapy to address the growing obesity market. We intend to continue to advance DA-1726 through the Investigational New Drug (IND) process during the fourth quarter of this year. If the IND is accepted by the U.S. Food and Drug Administration (FDA), we plan to initiate a Phase 1a safety study in the first half of 2024, with a data readout expected in the second half of 2024."

Mr. Kim continued, "Operationally, we are in a strong position, with $25.8 million in cash and cash equivalents at September 30, 2023, which is expected to fund operations at least into the fourth quarter of next year, through multiple potential value creating milestones. As previously reported, in August, we signed a term sheet with MThera Pharma Co., Ltd. (MTHERA) to out-license the worldwide rights, outside of Korea, for

NB-01, for the treatment of painful diabetic neuropathy and we continue to consider strategies to monetize our remaining legacy assets, ANA001, NB-02 and Gemcabene, including potential out-licensing and acquisition opportunities."

Third Quarter 2023 and Subsequent Highlights

Anticipated Clinical Milestones

Third Quarter 2023 Financial and Operating Results

For the nine months ended September 30, 2023, R&D expenses were approximately $5.3 million, as compared to approximately $2.5 million for the nine months ended September 30, 2022. The increase of approximately $2.8 million was primarily due to costs related to the Company's clinical trial of DA-1241 which was initiated in the third quarter of 2023, including increases in clinical trial costs, toxicology studies and related drug manufacturing of $0.9 million, $1.6 million, and $0.5 million,

respectively. The increase was partially offset by a decrease of $0.2 million in general research and development overhead, as the Company was finishing the ANA001 study.

For the nine months ended September 30, 2023, G&A expenses were approximately $4.9 million, as compared to approximately $6.7 million for the nine months ended September 30, 2022. The decrease of approximately $1.8 million was primarily due to a decrease in professional fees of $1.0 million chiefly related to the exploration of business opportunities during the nine months ended September 30, 2022, as well as a decrease in insurance costs of approximately $0.7 million and a decrease in stock-based compensation of $0.5 million, offset partially by increases in payroll and executive consultant fees in the aggregate of $0.4 million.

Net Loss for the nine months ended September 30, 2023 was $7.2 million, or $0.18 per basic and diluted share, based on 40,517,356 weighted average shares of common stock outstanding, compared with a net loss of $9.3 million, or $10.45 per basic and diluted share, based on 888,693 weighted average shares of common stock outstanding for the nine months ended September 30, 2022.

About NeuroBo Pharmaceuticals

NeuroBo Pharmaceuticals, Inc. is a clinical-stage biotechnology company on a quest to transform cardiometabolic diseases. The company is currently developing DA-1241 for the treatment of Non-Alcoholic Steatohepatitis (NASH) and Type 2 Diabetes Mellitus (T2DM), and is developing DA-1726 for the treatment of obesity. DA-1241 is a novel G-Protein-Coupled Receptor 119 (GPR119) agonist, which promotes the release of key gut peptides GLP-1, GIP, and PYY. In preclinical studies, DA-1241 demonstrated positive effect on liver inflammation, lipid metabolism, weight loss, and glucose metabolism, reducing hepatic steatosis, hepatic inflammation, and liver fibrosis, while also improving glucose control. DA-1726 is a novel oxyntomodulin (OXM) analogue that acts as a glucagon-like peptide-1 receptor (GLP1R) and glucagon receptor (GCGR) dual agonist. OXM is a naturally-occurring gut hormone that activates GLP1R and GCGR, thereby decreasing food intake while increasing energy expenditure, thus potentially resulting in superior body weight loss compared to selective GLP1R agonists. For more information, please visit www.neurobopharma.com.

Forward Looking Statements

Certain statements in this release may be considered forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including without limitation, statements about the closing of the offering of securities. Forward-looking statements are predictions, projections and other statements

about future events that are based on current expectations and assumptions and, as a result, are subject to risks and uncertainties. Many factors could cause actual future events to differ materially from the forward-looking statements in this release, including, without limitation, those risks associated with our ability to execute on our commercial strategy, the timeline for regulatory submissions, regulatory steps and potential regulatory approval of our current and future product candidates, the ability to realize the benefits of the license agreement with Dong-A ST Co. Ltd., including the impact on future financial and operating results of NeuroBo; the cooperation of our contract manufacturers, clinical study partners and others involved in the development of our current and future product candidates; our ability to initiate and complete clinical trials on a timely basis; our ability to recruit sites and subjects for our clinical trials; costs related to the license agreement, known and unknown, including costs of any litigation or regulatory actions relating to the license agreement; our ability to out-license or sell assets related to our legacy programs; changes in applicable laws or regulations; effects of changes to NeuroBo's stock price on the terms of the license agreement and any future fundraising; and other risks and uncertainties described in our filings with the SEC. Forward-looking statements speak only as of the date when made. NeuroBo does not assume any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Rx Communications Group

NeuroBo Pharmaceuticals, Inc.

Marshall Woodworth, Acting Chief Financial Officer

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NeuroBo Pharmaceuticals, Inc.

Condensed Consolidated Balance Sheets

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NeuroBo Pharmaceuticals, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss

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