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Proteostasis and Yumanity to merge

Proteostasis Therapeutics Inc and Yumanity Therapeutics, a provider of treatments for neurodegenerative diseases, have agreed to merge.

Proteostasis Therapeutics Inc and Yumanity Therapeutics, a provider of treatments for neurodegenerative diseases, have agreed to merge. No financial terms were disclosed. The combined company is expected to trade on the NASDAQ under the ticker symbol “YMTX.” Yumanity’s backers include Alexandria Venture Investments, Biogen, Fidelity, Merck, Pfizer, Redmile Group and Sanofi Ventures.

PRESS RELEASE

BOSTON, Aug. 24, 2020 /PRNewswire/ — Yumanity Therapeutics and Proteostasis Therapeutics, Inc. (Nasdaq: PTI) today announced that the companies have entered into a definitive merger agreement. The combined company, operating under the name Yumanity Therapeutics, Inc., will leverage a common scientific expertise in the area of protein misfolding to advance Yumanity’s pipeline of innovative, disease-modifying programs for neurodegenerative diseases.

Yumanity’s first clinical-stage product candidate, YTX-7739, is currently in Phase 1 clinical development for the treatment and disease modification of Parkinson’s disease. Yumanity is also advancing several additional candidates for other neurodegenerative disorders, including dementia with Lewy bodies, multi-system atrophy, amyotrophic lateral sclerosis (ALS or Lou Gehrig’s disease), and frontotemporal lobar dementia (FTLD).

“The combination of PTI and Yumanity brings together two technologies rooted in a shared scientific legacy of protein misfolding as the basis of disease, as well as capabilities and resources that offer shareholders a broad platform for value creation,” commented Meenu Chhabra, President and Chief Executive Officer of PTI. “We believe the combined company is well-positioned to advance multiple programs into and through the clinic, including Yumanity’s lead candidate YTX-7739, currently in Phase 1 trials for the treatment of Parkinson’s disease. We are excited to be working with Yumanity’s management team and leading investors to complete the merger.”

Yumanity has raised more than $100 million from leading investors that include Alexandria Venture Investments, Biogen, Fidelity, Merck, Pfizer, Redmile Group, and Sanofi Ventures. The Company also recently entered into a strategic research collaboration with Merck (known as MSD outside the United States and Canada) for the discovery and development of novel agents for the treatment of ALS and FTLD with Yumanity eligible to receive future payments totaling approximately $500 million in addition to royalties on the net sales of any marketed products. Upon the anticipated closing of the merger between PTI and Yumanity, Richard Peters, M.D., Ph.D., President, Chief Executive Officer and Director of Yumanity, will become President, Chief Executive Officer and Director of the combined company.

“Yumanity’s state-of-the-art R&D efforts and deep insights into new potential targets to treat neurodegenerative diseases places us on a rapid trajectory toward our goal of revolutionizing the treatment of these disorders. Our merger with PTI should enable the combined company to grow faster, deliver potential therapies to patients more quickly and create sustainable shareholder value well beyond what either of us would achieve separately,” said Dr. Peters. “We have made significant clinical and business progress over the past several months, including our recent strategic research collaboration with Merck and our Series C financing. This merger also ensures that we have access to the additional capital we will need to advance our pipeline of disease-modifying therapies.”

“Today’s announcement brings together two organizations that share a common scientific heritage in the science of protein misfolding and brings that science one step closer to novel solutions for patients suffering from the debilitation of neurodegenerative diseases,” said Tony Coles, M.D., Chairman and Co-founder of Yumanity Therapeutics. “We look forward to continuing this important clinical work on behalf of patients as we make this transition to becoming a public company.”

Proteostasis’ Cystic Fibrosis (CF) Program Update
PTI also announced today that it is pursuing a strategic transaction related to its proprietary CFTR modulators. PTI plans to share proceeds from any monetization of its CF assets through contingent value rights (CVR). PTI stockholders of record as of the close of the merger would receive a portion of any upfront payment and CVRs entitling the holders to all net proceeds from any future milestones derived from the grant, sale or transfer of rights by PTI through a transaction completed from now until the closing of the merger. PTI stockholders of record would also be entitled to a portion of any net proceeds from a transaction completed within nine months of the closing of merger. In addition to the merger agreement, a form of the CVR agreement outlining the mechanism for distributing of any such proceeds to legacy PTI holders will be filed with the U.S. Securities and Exchange Commission on Form 8-K.

PTI’s CFTR modulators are currently being studied as part of the CHOICES development program. 502 subjects have completed enrollment in the organoid portion of the study, with data expected in the fourth quarter of 2020.

“We believe that our CF drug candidates have the highest probability of reaching patients in the hands of a pharmaceutical company with global development and commercialization capabilities that shares our vision of empowering the global CF patient community with more treatment options is realized,” said Ms. Chhabra. “It has been an honor to serve the CF community in the fight to bring new treatment options to patients and their families.”

About the Proposed Merger
Under the terms of the merger agreement, PTI will acquire all outstanding shares of Yumanity in exchange for newly-issued shares of PTI common stock. Upon completion of the proposed acquisition, it is anticipated that existing PTI shareholders will own approximately 32.5% of the combined company and Yumanity shareholders will own approximately 67.5% of the combined company. The actual allocation will be subject to adjustment based on each company’s outstanding equity ownership and Proteostasis’ net cash balance at the time of closing of the merger. Following completion of the merger, the Yumanity Board of Directors will be expanded to nine persons to include the appointment of two current Proteostasis directors. The existing Yumanity Directors will continue to serve in their current positions and Dr. Coles will remain as chairperson.

The transaction has been approved by the boards of directors of both companies. The merger is expected to close in the fourth quarter of 2020, subject to customary closing conditions, including approval of the merger by the shareholders of PTI. The combined company is expected to trade on the NASDAQ Global Market under the ticker symbol YMTX.
In conjunction with this merger announcement, PTI has reduced its workforce by 79%. As of today, PTI has five full time employees supporting the proposed merger transaction and strategic efforts related to PTI’s CF assets.

MTS Health Partners, L.P. is serving as the exclusive financial advisor to PTI and Cooley LLP is serving as legal counsel to PTI. Goodwin Procter LLP is serving as legal counsel for Yumanity.

Conference Call and Webcast
PTI and Yumanity will host a conference call and webcast to discuss the proposed transaction as well as Yumanity’s drug discovery platform and development pipeline today, August 24 at 8:00 a.m. ET. The live webcast can be accessed on the Events & Presentations page of Yumanity’s and PTI’s websites or by dialing (844) 534-7315 (U.S.) or (574) 990-3007. The conference ID for the live call is 8351758. The conference call and webcast will include presentation slides that can be viewed through the webcast. An archived replay of the webcast will be available on the Yumanity and PTI websites.

About Proteostasis Therapeutics, Inc.
Proteostasis Therapeutics, Inc. is a clinical stage biopharmaceutical company developing small molecule therapeutics to treat cystic fibrosis and other diseases caused by dysfunctional protein processing. Headquartered in Boston, MA, the Proteostasis Therapeutics team focuses on identifying therapies that restore protein function. For more information, visit www.proteostasis.com.

About Yumanity Therapeutics, Inc.
Yumanity Therapeutics is a clinical-stage biopharmaceutical company that is accelerating the revolution in the treatment of neurodegenerative diseases through its transformative scientific foundation and drug discovery platform. The Company’s most advanced product candidate, YTX-7739, is currently in Phase 1 clinical development for Parkinson’s disease. Yumanity’s drug discovery platform allows the Company to rapidly screen for disease-modifying therapies to overcome toxicity of misfolded proteins in neurogenerative diseases. Yumanity’s growing pipeline consists of additional programs focused on Lewy body dementia, amyotrophic lateral sclerosis (ALS), and Alzheimer’s disease. For more information, please visit www.yumanity.com.