Immuneering Reports Third Quarter 2024 Financial Results and Provides Business Updates

- Announced Positive Initial Data, Including Complete and Partial Responses, with IMM-1-104 in Combination with Chemotherapy in First-Line Pancreatic Cancer Patients -

- Granted FDA Orphan Drug Designation for IMM-1-104 in the Treatment of Pancreatic Cancer and Fast Track Designation in First-line Pancreatic Cancer -

- Initial Data From At Least One Additional Arm of the Phase 2a Portion of the IMM-1-104 Phase 1/2a Trial Expected by Year End -

- Cash Runway into Fourth Quarter 2025 -

CAMBRIDGE, Mass., Nov. 13, 2024 (GLOBE NEWSWIRE) -- Immuneering Corporation (Nasdaq: IMRX), a clinical-stage oncology company seeking to develop and commercialize universal-RAS/RAF medicines for broad populations of cancer patients, today reported financial results for the third quarter ended September 30, 2024, and provided business updates.

"We were extremely pleased to share positive initial response data in September for IMM-1-104 in combination with modified gemcitabine/nab-paclitaxel in pancreatic cancer as part of the ongoing Phase 2a clinical trial,” said Ben Zeskind, Ph.D., Co-founder and Chief Executive Officer of Immuneering. "While still early, it is highly encouraging to already see responses - including a complete response - as well as impressive disease control, both at levels that would represent a meaningful improvement over the existing standard of care. If these results continue, we believe we will have a clear path forward for clinical development of IMM-1-104 in combination with gemcitabine/nab-paclitaxel for pancreatic cancer. Importantly, our recent Fast Track and Orphan Drug designations from the FDA may help advance development of this potentially important new therapy for the treatment of pancreatic cancer. With enrollment progressing well in our Phase 2a arms, we expect to share further data by year end and we look forward to providing updates on our progress at that time.”

Corporate Highlights

• FDA Orphan Drug Designation for IMM-1-104 in the Treatment of Pancreatic Cancer: In October 2024, the U.S. Food and Drug Administration (FDA) granted Orphan Drug designation to IMM-1-104 in the treatment of pancreatic cancer.

• Positive Initial Phase 2a Data Including Complete and Partial Responses with IMM-1-104 in Combination with Chemotherapy in First-Line Pancreatic Cancer Patients: In September 2024, Immuneering announced positive initial response data from the first five patients treated with IMM-1-104 in combination with modified gemcitabine/nab-paclitaxel in first line pancreatic cancer as part of its ongoing Phase 2a clinical trial. If the early trends with IMM-1-104 in combination with modified gemcitabine/nab-paclitaxel continue, management believes there is a clear path forward for clinical development of IMM-1-104 in pancreatic cancer, which has the potential to improve the prognosis for a drastically underserved patient population.

• FDA Fast Track Designation for IMM-1-104 in First-line Pancreatic Cancer: In July 2024, the FDA granted Fast Track designation for IMM-1-104, as a first-line treatment for patients with pancreatic ductal adenocarcinoma (PDAC).
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IMM-1-104

• Initial data from at least one additional arm of the Phase 2a portion of the Company's Phase 1/2a trial is expected by year end.

• Initial PK, PD and safety data from the Phase 1 portion of the Company's Phase 1/2a trial is expected by year end.

Cash Position: Cash, cash equivalents and marketable securities as of September 30, 2024 were $50.7 million, compared with $85.7 million as of December 31, 2023. The September 30, 2024 figure includes $4.2 million of net proceeds from the Company's ATM facility.

Research and Development (R&D) Expenses: R&D expenses for the third quarter of 2024 were $11.3 million, compared with $10.1 million for the third quarter of 2023. The increase in R&D expenses was primarily attributable to higher clinical costs related to the Company's lead program and increased personnel to support ongoing research and development activities.

General and Administrative (G&A) Expenses: G&A expenses for the third quarter of 2024 were $4.0 million, compared with $3.9 million for the third quarter of 2023. The increase in G&A expenses was primarily attributable to an increase in the Company's stock-based compensation costs and employee-related costs in connection with general and administrative functions.

Net Loss: Net loss attributable to common stockholders was $14.6 million, or $0.49 per share, for the third quarter ended September 30, 2024, compared to $12.6 million, or $0.43 per share, for the third quarter ended September 30, 2023.

2024 Financial Guidance

Based on cash, cash equivalents and marketable securities as of September 30, 2024, and current operating plans, the Company expects its cash runway to be sufficient to fund operations into the fourth quarter of 2025.

About Immuneering Corporation

Immuneering is a clinical-stage oncology company seeking to develop and commercialize universal-RAS/RAF medicines for broad populations of cancer patients with an initial aim to develop a universal-RAS therapy. The Company aims to achieve universal activity through Deep Cyclic Inhibition of the MAPK pathway, impacting cancer cells while sparing healthy cells. Immuneering's lead product candidate, IMM-1-104, is an oral, once-daily Deep Cyclic Inhibitor currently in a Phase 2a trial in patients with advanced solid tumors including those harboring RAS mutations. IMM-6-415 is an oral, twice-daily Deep Cyclic Inhibitor currently in a Phase 1/2a trial in patients with advanced solid tumors harboring RAS or RAF mutations. The Company's development pipeline also includes several early-stage programs. For more information, please visit www.immuneering.com.

Forward-Looking Statements

This press release contains forward-looking statements, including within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this press release that do not relate to matters of historical fact should be considered forward-looking statements, including, without limitation, statements regarding: Immuneering's plans to develop, manufacture and commercialize its product candidates; the treatment potential of IMM-1-104, alone or in combination with other agents, including chemotherapy; the design, enrollment and conduct of the Phase 1/2a IMM-1-104 clinical trial; the possible incentives and other benefits that could result from fast track and / or orphan drug designation of IMM-1-104; and the timing of additional results from the Phase 2a portion of the trial for IMM-1-104 and the Phase 1 portion of the trial for IMM-6-415.

These forward-looking statements are based on management's current expectations. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including, but not limited to, the following: the risks inherent in oncology drug research and development, including target discovery, target validation, lead compound identification, and lead compound optimization; we have incurred significant losses, are not currently profitable and may never become profitable; our projected cash runway; our need for additional funding; our unproven approach to therapeutic intervention; our ability to address regulatory questions and the uncertainties relating to regulatory filings, reviews and approvals; the lengthy, expensive, and uncertain process of clinical drug development, including potential delays in or failure to obtain regulatory approvals; our reliance on third parties and collaborators to conduct our clinical trials, manufacture our product candidates, and develop and commercialize our product candidates, if approved; failure to compete successfully against other drug companies; protection of our proprietary technology and the confidentiality of our trade secrets; potential lawsuits for, or claims of, infringement of third-party intellectual property or challenges to the ownership of our intellectual property; our patents being found invalid or unenforceable; costs and resources of operating as a public company; and unfavorable or no analyst research or reports.

These and other important factors discussed under the caption "Risk Factors” in our Quarterly Report on Form 10-Q for the period ended September 30, 2024, and our other reports filed with the U.S. Securities and Exchange Commission, could cause actual results to differ materially from those indicated by the forward-looking statements made in this press release. Any such forward-looking statements represent management's estimates as of the date of this press release. While we may elect to update such forward-looking statements at some point in the future, except as required by law, we disclaim any obligation to do so, even if subsequent events cause our views to change. These forward-looking statements should not be relied upon as representing our views as of any date subsequent to the date of this press release.

Media Contact:

Gina Nugent

[email protected]

Investor Contact:

Laurence Watts

619-916-7620

[email protected]