Merrimack Reports First Quarter 2022 Financial Results

Merrimack Pharmaceuticals, Inc. (Nasdaq: MACK) [(“Merrimack” or the “Company”)] today announced its first quarter 2022 financial results for the period ended March 31, 2022.

“During the first quarter of 2022 we continued to see reductions in our operating expenses and were able to close the sale of an additional preclinical asset” said Gary Crocker, Chairman of Merrimack's Board of Directors. “We continue to be focused on maintaining cash balances that will allow us to be in a position to receive milestone payments from Ipsen and Elevation if the programs that we have licensed to them continue to progress.”

First Quarter 2022 Financial Results

Merrimack reported a net loss of $132 thousand for the first quarter ended March 31, 2022, or $0.01 per basic and diluted share on a fully diluted basis, compared to a net loss of $696 thousand, or $0.05 per basic and diluted share on a fully diluted basis, for the same period in 2021.

Merrimack reported a gain on the sale of assets for the first quarter ended March 31, 2022, of $445 thousand, attributable to the sale of certain of our preclinical programs, compared to $50 thousand for the same period in 2021.

General and administrative expenses for the first quarter ended March 31, 2022, were $577 thousand, compared to $746 thousand for the same period in 2021.

As of March 31, 2022, Merrimack had cash and cash equivalents and investments of $14.3 million, compared to $14.2 million as of December 31, 2021.

As of March 31, 2022, Merrimack had 13.4 million shares of common stock outstanding.

Updates on Programs Underlying Potential Milestone Payments

Ipsen

- On April 27, 2022, Ipsen released to the public an update on its sales performance for the first quarter of 2022. At the same time, Ipsen publicly indicated that a data readout from its ongoing Phase 3 trial of ONIVYDE® as a treatment of second line small cell lung cancer would be provided in the second half of 2022. In addition, Ipsen reported that it is continuing to study ONIVYDE^® in Phase III clinical trials in first line pancreatic ductal adenocarcinoma, with a data readout expected in 2023.

Elevation Oncology

- On April 27, 2022 Elevation Oncology announced that initial data from its Phase 2 CRESTONE Study of Seribantumab has been selected for oral presentation at the American Society of Clinical Oncology on June 7, 2022.

About Merrimack

Merrimack Pharmaceuticals, Inc. is a biopharmaceutical company based in Cambridge, Massachusetts that is entitled to receive up to $450.0 million in contingent milestone payments related to its sale of ONIVYDE^® to Ipsen S.A. in April 2017. These milestone payments would be payable by Ipsen upon approval by the U.S. Food and Drug Administration (“FDA”) of ONIVYDE for certain additional clinical indications. ONIVYDE® is already approved by the FDA in combination with fluorouracil (5-FU) and leucovorin (LV) for the treatment of patients with metastatic adenocarcinoma of the pancreas after disease progression following gemcitabine-based therapy. This existing approval is unrelated to any future potential milestone payments. Merrimack’s agreement with Ipsen does not require Ipsen to provide Merrimack with any information on the progress of ONIVYDE clinical trials that is not publicly available. Merrimack is also entitled to receive up to $54.5 million in contingent milestone payments related to its sale of anti-HER3 programs to Elevation Oncology (formerly 14ner Oncology, Inc.) in July 2019.

Forward Looking Statements

To the extent that statements contained in this press release are not descriptions of historical facts, 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, as amended. Forward-looking statements include any statements about Merrimack’s strategy, future operations, future financial position, future revenues and future expectations and plans and prospects for Merrimack, and any other statements containing the words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “may,” “plan,” “predict,” “project,” “target,” “potential,” “will,” “would,” “could,” “should,” “continue” and similar expressions. In this press release, Merrimack’s forward-looking statements include, among others, Merrimack’s rights to receive payments related to certain milestone events or whether such milestones will be achieved, if at all, the sufficiency of Merrimack’s cash resources and Merrimack’s strategic plan, including any potential distribution of additional cash. Such forward-looking statements involve substantial risks and uncertainties that could cause Merrimack’s future results, performance or achievements to differ significantly from those expressed or implied by the forward-looking statements. Such risks and uncertainties include, among others: Positive information about pre-clinical and early stage clinical trial results does not ensure that later stage or larger scale clinical trials will be successful. For example, Onivyde® may not demonstrate promising therapeutic effect or appropriate safety profiles in current or later stage or larger scale clinical trials as a result of known or as yet unanticipated side effects. The results achieved in later stage trials may not be sufficient to meet applicable regulatory standards or to justify further development. Problems or delays may arise prior to the initiation of planned clinical trials, during clinical trials or in the course of developing, testing or manufacturing that could lead Ipsen and Elevation Oncology and their partners and collaborators to fail to initiate or to discontinue development. Even if later stage clinical trials are successful, unexpected concerns may arise from subsequent analysis of data or from additional data. Obstacles may arise or issues may be identified in connection with review of clinical data with regulatory authorities. Regulatory authorities may disagree with Ipsen and Elevation Oncology’s view of the data or require additional data or information or additional studies. In addition, the planned timing of initiation and completion of clinical trials based upon Onivyde® and the anti-HER Program are subject to the ability of each of Ipsen and Elevation Oncology, respectively, to enroll patients, enter into agreements with clinical trial sites and investigators, and overcome technical hurdles and other issues related to the conduct of the trials for which each of them is responsible. Additionally, each of Ipsen and Elevation Oncology are subject to the risk that they may not successfully commercialize these development programs. Merrimack is also subject to the risk that it may not have funding sufficient for its foreseeable and unforeseeable operating expenses and capital expenditure requirements. In addition, press releases and other public statements by Ipsen and Elevation Oncology may contain forward-looking statements. Merrimack undertakes no obligation to update or revise any forward-looking statements. Forward-looking statements should not be relied upon as representing Merrimack’s views as of any date subsequent to the date hereof. For a further description of the risks and uncertainties that could cause actual results to differ from those expressed in these forward-looking statements, as well as risks relating to Merrimack’s business in general, see the “Risk Factors” section of Merrimack’s Annual Report on Form 10-K filed with the SEC on March 9, 2022, any subsequent quarterly report on Form 10-Q filed by Merrimack and the other reports Merrimack files with the Securities and Exchange Commission.

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