Exhibit 99.1

Cocrystal Pharma Reports 2023 Financial Results and Provides Updates on its Antiviral Drug-Development Programs

BOTHELL, Wash. (March 28, 2024) – Cocrystal Pharma, Inc. (Nasdaq: COCP) (Cocrystal or the Company) reports financial results for the 12 months ended December 31, 2023, and provides updates on its antiviral product pipeline, upcoming milestones and business activities.

“We are highly encouraged by the FDA’s feedback to our Pre-Investigational New Drug (Pre-IND) package, which provides greater clarity on the regulatory requirements for a planned Phase 2b clinical trial with our novel broad-spectrum oral PB2 inhibitor CC-42344 for pandemic and seasonal influenza A,” said Sam Lee, Ph.D., President and co-CEO of Cocrystal. “This is a major step in the clinical and regulatory process for this program. We plan to file an IND for late-stage clinical development of oral CC-42344 that includes data from our ongoing Phase 2a human challenge study, which are expected later this year.

“During 2024 we also expect to initiate a Phase 1 study in healthy volunteers with inhaled CC-42344 as a potential prophylactic and therapeutic for influenza A. Our inhaled formulation of CC-42344 has shown the ability to directly target influenza-infected respiratory epithelial cells in lung, allowing for higher accumulation of drug in the pulmonary system and potentially producing a rapid clinical response while reducing potential systemic side effects,” he added. “Also during the coming year we expect topline data from the ongoing first-in-human study with our pan-coronavirus and pan-norovirus oral protease inhibitor CDI-988, which is expected to serve as a Phase 1 study for both indications.”

“All our programs target high-value unmet indications with novel, broad-spectrum, best-in-class antiviral candidates whose design and development uses our proprietary structure-based drug discovery platform technology,” said James Martin, CFO and co-CEO. “I’m pleased to report that under our cost-efficient business model, we believe our cash position is sufficient to fund current operations including planned clinical studies beyond the next 12 months.”

Antiviral Product Pipeline Overview

We are developing therapeutics that inhibit the viral replication function of RNA viruses that cause acute and chronic diseases. Our drug-discovery process focuses on the highly conserved regions of the viral enzymes and inhibitor-enzyme interactions at the atomic level. By designing and selecting antiviral drug candidates that interrupt the viral replication process and have specific binding characteristics, we seek to develop drugs that are effective against the virus and mutations of the virus, and also have reduced off-target interactions that may cause undesirable side effects. Our drug discovery process differs from traditional, empirical medicinal chemistry approaches that often require iterative high-throughput compound screening and lengthy hit-to-lead processes.

Influenza Programs

Influenza is a severe respiratory illness that is caused by the influenza A or B virus and results in disease outbreaks mainly during the winter months. Influenza is a major global health threat that may become more challenging to treat in the future due to the emergence of highly pathogenic avian influenza viruses and resistance to approved influenza antivirals.

Each year there are approximately 1 billion cases of seasonal influenza worldwide, 3-5 million severe illnesses and up to 650,000 deaths, according to the World Health Organization. On average, about 8% of the U.S. population contracts influenza each season. In addition to the health risk, influenza is responsible for approximately $10.4 billion in direct costs for hospitalizations and outpatient visits for adults in the U.S. annually.

COVID-19 and Other Coronavirus Programs

By targeting viral replication enzymes and protease, we believe it is possible to develop effective treatments for all diseases caused by coronaviruses including COVID-19, Severe Acute Respiratory Syndrome (SARS) and Middle East Respiratory Syndrome (MERS). Our main SARS-CoV-2 protease inhibitors showed potent in vitro pan-viral activity against common human coronaviruses, rhinoviruses and respiratory enteroviruses that cause the common cold, as well as against noroviruses that can cause symptoms of acute gastroenteritis. Driven by the anticipated emergence of new COVID-19 variants, the global COVID-19 therapeutics market is estimated to exceed $16 billion by the end of 2031.

Norovirus Program

Norovirus is a highly contagious infection and is the most common cause of acute gastroenteritis, accounting for nearly one in five cases. According to the Centers for Disease Control and Prevention (CDC), an estimated 685 million cases and an estimated 200,000 deaths are attributed to norovirus each year worldwide, with an estimated societal cost of $60 billion.

3CL inhibitor CDI-988 has shown pan-viral activity against multiple norovirus strains, including the genogroup II, genotype 4 (GII.4) norovirus strain that is responsible for major norovirus outbreaks. By targeting viral replication, we believe it is possible to develop an effective treatment or short-term prophylactic for closed environments for all genogroups of norovirus.

2023 Financial Results

Research and development (R&D) expenses for 2023 were $15.2 million, compared with $12.4 million for 2022. The increase was primarily due to advancing influenza candidate CC-42344 into a Phase 2a study and advancing the dual norovirus-coronavirus candidate CDI-988 into a Phase 1 study. General and administrative (G&A) expenses for 2023 were $6.0 million, compared with $5.7 million for 2022.

During 2023 the Company received $2.6 million related to litigation with an insurer, which included a $1.6 million refund from the registry of the United States Court of Appeals for the Third Circuit, reflecting the recovery of funds following a successful appeal, and $1.0 million in a settlement agreement with the insurer.

Interest income for 2023 was $640,000, compared with interest expense of $2,000 for 2022. The interest income in 2023 was related to interest earned from cash held in banks and deposits with the court registry, and the interest expense in 2022 was related to finance lease agreements.

The net loss for 2023 was $18.0 million, or $1.87 per share, compared with the net loss for 2022 of $38.8 million, or $4.77 per share, which included a $19.1 million non-cash impairment-loss of goodwill.

Cocrystal reported unrestricted cash as of December 31, 2023 of $26.4 million, compared with $37.1 million as of December 31, 2022. Net cash used in operating activities for 2023 was $14.7 million, compared with $21.4 million for 2022. The Company had working capital of $25.0 million and 10.2 million common shares outstanding as of December 31, 2023.

About Cocrystal Pharma, Inc.

Cocrystal Pharma, Inc. is a clinical-stage biotechnology company discovering and developing novel antiviral therapeutics that target the replication process of influenza viruses, coronaviruses (including SARS-CoV-2), noroviruses and hepatitis C viruses. Cocrystal employs unique structure-based technologies and Nobel Prize-winning expertise to create first- and best-in-class antiviral drugs. For further information about Cocrystal, please visit www.cocrystalpharma.com.

Cautionary Note Regarding Forward-Looking Statements

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, including statements regarding our plans for the future development of preclinical and clinical drug candidates, our expectations regarding future characteristics of the product candidates we develop, the expected time of achieving certain value-driving milestones in our programs, including preparation, commencement and advancement of clinical studies for certain product candidates in 2024, the viability and efficacy of potential treatments for diseases our product candidates are designed to treat, expectations for the markets for certain therapeutics, our ability to execute our clinical and regulatory goals and deploy regulatory guidance towards future studies, the expected sufficiency of our cash balance to advance our programs and fund our planned operations, and our liquidity. The words “believe,” “may,” “estimate,” “continue,” “anticipate,” “intend,” “should,” “plan,” “could,” “target,” “potential,” “is likely,” “will,” “expect” and similar expressions, as they relate to us, are intended to identify forward-looking statements. We have based these forward-looking statements largely on our current expectations and projections about future events. Some or all of the events anticipated by these forward-looking statements may not occur. Important factors that could cause actual results to differ from those in the forward-looking statements include, but are not limited to, the risks and uncertainties arising from the high interest rates in response to inflation, uncertainty in the financial markets, the possibility of a recession and geopolitical conflict in Ukraine and Israel on our Company, our collaboration partners, and on the U.S., UK, Australia and global economies, including manufacturing and research delays arising from raw materials and labor shortages, supply chain disruptions and other business interruptions on our ability to proceed with studies as well as similar problems with our vendors and our current and any future clinical research organization (CROs) and contract manufacturing organizations (CMOs), the ability of our CROs to recruit volunteers for, and to proceed with, clinical studies, our and our collaboration partners’ technology and software performing as expected, financial difficulties experienced by certain partners, the results of any current and future preclinical and clinical studies, general risks arising from clinical studies, receipt of regulatory approvals, regulatory changes, and potential development of effective treatments and/or vaccines by competitors, including as part of the programs financed by the U.S. government, potential mutations in a virus we are targeting that may result in variants that are resistant to a product candidate we develop. Further information on our risk factors is contained in our filings with the SEC, including our Annual Report on Form 10-K for the year ended December 31, 2023. Any forward-looking statement made by us herein speaks only as of the date on which it is made. Factors or events that could cause our actual results to differ may emerge from time to time, and it is not possible for us to predict all of them. We undertake no obligation to publicly update any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by law.

Investor Contact:

LHA Investor Relations

Jody Cain

310-691-7100

jcain@lhai.com

Media Contact:

JQA Partners

Jules Abraham

917-885-7378

Jabraham@jqapartners.com

Financial Tables to follow

COCRYSTAL PHARMA, INC.

CONSOLIDATED BALANCE SHEETS

(in thousands)

COCRYSTAL PHARMA, INC.

CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited)

(in thousands, except per share data)

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