ProMetic Announces the Exercise of the Over-Allotment Option Under Its Bought Deal Offering of Common Shares

LAVAL, QUEBEC--(Marketwired - May 26, 2015) - ProMetic Life Sciences Inc. (PLI.TO)(PFSCF), ("ProMetic" or the "Corporation") is pleased to announce that it has received a notice of exercise of the over-allotment option (the "Over-Allotment Option") to acquire an additional 2,887,500 common shares (the "Over-Allotment Shares") at a price of $2.60 per Over-Allotment Share, for gross proceeds of $7,507,500 from the syndicate of underwriters led by Canaccord Genuity Corp., and which included RBC Dominion Securities Inc., Beacon Securities Limited, TD Securities Inc. and Paradigm Capital Inc. (collectively, the "Underwriters"). The Underwriters were granted the Over-Allotment Option in connection with the previously announced bought deal offering of common shares of the Corporation, which closed on May 6, 2015. Closing of the Over-Allotment Option is expected to occur on or about May 28, 2015.

About ProMetic Life Sciences Inc.

ProMetic Life Sciences Inc. (www.prometic.com) is a long established biopharmaceutical company with globally recognized expertise in bioseparations, plasma-derived therapeutics and small-molecule drug development. ProMetic offers its state of the art technologies for large-scale purification of biologics, drug development, proteomics and the elimination of pathogens to a growing base of industry leaders and uses its own affinity technology that provides for highly efficient extraction and purification of therapeutic proteins from human plasma in order to develop best-in-class therapeutics and orphan drugs. ProMetic is also active in developing its own novel small-molecule therapeutic products targeting unmet medical needs in the field of fibrosis, anemia, neutropenia, cancer and autoimmune diseases/inflammation as well as certain nephropathies. Headquartered in Laval (Canada), ProMetic has R&D facilities in the UK, the U.S. and Canada, manufacturing facilities in the UK and business development activities in the U.S., Europe and Asia.

Forward Looking Statements

This press release contains forward-looking statements about ProMetic's objectives, strategies and businesses that involve risks and uncertainties. These statements are "forward-looking" because they are based on our current expectations about the markets we operate in and on various estimates and assumptions. Actual events or results may differ materially from those anticipated in these forward-looking statements if known or unknown risks affect our business, or if our estimates or assumptions turn out to be inaccurate. Such risks and assumptions include, but are not limited to, ProMetic's ability to develop, manufacture, and successfully commercialize value-added pharmaceutical products, the availability of funds and resources to pursue R&D projects, the successful and timely completion of clinical studies, the ability of ProMetic to take advantage of business opportunities in the pharmaceutical industry, uncertainties related to the regulatory process and general changes in economic conditions. You will find a more detailed assessment of the risks that could cause actual events or results to materially differ from our current expectations in ProMetic's Annual Information Form for the year ended December 31, 2014, under the heading "Risk and Uncertainties related to ProMetic's business". As a result, we cannot guarantee that any forward-looking statement will materialize. We assume no obligation to update any forward-looking statement even if new information becomes available, as a result of future events or for any other reason, unless required by applicable securities laws and regulations. All amounts are in Canadian dollars unless indicated otherwise.