Stealth BioTherapeutics Reports Third Quarter 2019 Financial Results And Recent Business Highlights – P&T Community

BOSTON, Nov. 14, 2019 /PRNewswire/ --Stealth BioTherapeuticsCorp(NASDAQ: MITO), a clinical-stage biotechnology company focused on the discovery, development and commercialization of novel therapies for diseases involving mitochondrial dysfunction, today reported financial results for the third quarter ended September 30, 2019 and provided a corporate update.

"We're approaching a transformational stage in our company's development, with our recently announced partnership with Alexion and our anticipated pivotal data in primary mitochondrial myopathy in January bringing us even closer toward our goal of delivering transformative therapies to patients with rare, mitochondrial diseases," said Reenie McCarthy, Stealth's Chief Executive Officer. "On the clinical front, the long-term data from our Barth open-label extension, now showing improvement across multiple parameters of cardiac function suggestive of cardiac remodeling, increases our optimism in elamipretide as a potential therapy for this devastating disease. We're also excited to usher our new investigational candidate, SBT-272, into the clinic, following recently announced data in an ALS model highlighting its neuro-protective potential."

Recent Highlights

Key Upcoming Milestones

Financial Results for the Quarter Ended September 30, 2019

Cash Position: Cash and cash equivalents were $37.2 million at September 30, 2019. In October 2019, we received a $30 million payment associated with the Alexion option and share purchase agreements announced on October 10, 2019.

Research and Development (R&D) Expenses:

R&D expenses were $9.8 million for the three months ended September 30, 2019, compared to $16.2 million for the same period in 2018. The decrease was primarily due to a $3.4 million net decrease in clinical trial costs due to timing of trials that ended in 2018, a $0.4 million decrease in discovery related expenses due to timing of activities and a $3.4 million decrease in contract manufacturing, offset in part by an increase of $0.8 million in employee and consultant related costs.

General and Administrative (G&A) Expenses:

G&A expenses were $6.3 million for the three months ended September 30, 2019, compared to $4.8 million for the same period in 2018. The increase in administrative expenses was primarily attributed to an increase of $0.6 million in employee and consultant related costs, associated in part with build-out of the pre-commercialization and compliance functions, $0.5 million in professional services for activities attributable to operating as a public company and $0.4 million in pre-commercial activities including building disease awareness.

Other Expense, Net:

Other expense was $0.4 million for the three months ended September 30, 2019, compared to $1.7 million for the same period in 2018. The decrease in other expense is primarily attributed to a $5.5 million decrease in interest expense related to convertible debt which was converted into ordinary shares in conjunction with our initial public offering, an increase in interest income of $0.1 million, offset in part by a $4.3 million change in period over period fair value adjustments of the derivative liability associated with the convertible debt.

Net Loss:

Net loss was $16.5 million, or $0.04 basic and diluted net loss per ordinary share for the three months ended September 30, 2019, as compared to $22.7 million, or $0.33 basic and diluted net loss per ordinary share for the same period in 2018.

Conference Call

Management will host a conference call today at 8:30 am ET to discuss the financial results and provide a general business update. The call can be accessed by dialing (866) 451-7964 or (847) 944-7134 (international) and referencing conference ID 49191404. A live audio webcast of the event can be accessed by visiting the Investors & News section of Stealth's Investor website, https://investor.stealthbt.com/. A replay of the webcast will be archived on Stealth's website for 30 days following the event.

About Stealth

We are a clinical-stage biotechnology company focused on the discovery, development and commercialization of novel therapies for diseases involving mitochondrial dysfunction. Mitochondria, found in nearly every cell in the body, are the body's main source of energy production and are critical for normal organ function. Dysfunctional mitochondria characterize a number of rare genetic diseases, collectively known as primary mitochondrial diseases, and are also involved in many common age-related diseases. We believe our lead product candidate, elamipretide, as well as pipeline candidates including SBT-272, have the potential to treat both rare genetic and common age-related mitochondrial diseases. We are studying elamipretide in primary mitochondrial myopathy, Barth syndrome and Leber's hereditary optic neuropathy, which are rare genetic diseases. We are also studying elamipretide in geographic atrophy associated with dry age-related macular degeneration. Our pipeline candidates include SBT-272, which we are evaluating for rare neurodegenerative disease indications, and SBT-20 and SBT-259, which we are evaluating for rare peripheral neuropathies. We have optimized our discovery platform to identify novel mitochondrial-targeted compounds, which may be nominated as therapeutic product candidates or utilized as scaffolds to deliver other compounds to mitochondria. We have assembled a highly experienced management team, board of directors and group of scientific advisors to help us achieve our mission of leading mitochondrial medicine.

Forward-looking Statements

This press release contains forward-looking statements within the meaning of The Private Securities Litigation Reform Act of 1995. Such forward-looking statements include those regarding Stealth BioTherapeutics' plans, strategies and expectations for its preclinical and clinical advancement of its drug development programs, including its ongoing clinical trials of elamipretide and planned clinical trial of SBT-272; the potential benefits of Stealth BioTherapeutics' product candidates; its key milestones for 2019 and 2020; and its plans regarding future data presentations and regulatory interactions. Statements that are not historical facts, including statements about Stealth BioTherapeutics' beliefs, plans and expectations, are forward-looking statements. The words "anticipate," "expect," "hope," "plan," "potential," "possible," "will," "believe," "estimate," "intend," "may," "predict," "project," "would" and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Stealth BioTherapeutics may not actually achieve the plans, intentions or expectations disclosed in these forward-looking statements, and you should not place undue reliance on these forward-looking statements. Actual results or events could differ materially from the plans, intentions and expectations disclosed in the forward-looking statements as a result of known and unknown risks, uncertainties and other important factors, including: Stealth BioTherapeutics' ability to obtain additional funding; the ability to successfully demonstrate the efficacy and safety of Stealth BioTherapeutics' product candidates and future product candidates; the preclinical and clinical results for Stealth BioTherapeutics' product candidates, which may not support further development and marketing approval; the potential advantages of Stealth BioTherapeutics' product candidates; the content and timing of decisions made by the U.S. FDA, the EMA or other regulatory authorities, investigational review boards at clinical trial sites and publication review bodies, which may affect the initiation, timing and progress of preclinical studies and clinical trials of Stealth BioTherapeutics' product candidates; Stealth BioTherapeutics' ability to obtain and maintain requisite regulatory approvals and to enroll patients in its planned clinical trials; unplanned cash requirements and expenditures; competitive factors; Stealth BioTherapeutics' ability to obtain, maintain and enforce patent and other intellectual property protection for any product candidates it is developing; and general economic and market conditions. These and other risks are described in greater detail under the caption "Risk Factors" included in Stealth BioTherapeutics' most recent Annual Report on Form 20-F filed with the Securities and Exchange Commission ("SEC"), as well as in any future filings with the SEC. Forward-looking statements represent management's current expectations and are inherently uncertain. Except as required by law, Stealth BioTherapeutics does not undertake any obligation to update forward-looking statements made by us to reflect subsequent events or circumstances.

Media Relationsdna CommunicationsLindsey Colegrove, 212-537-8771Media@StealthBT.com

Investor RelationsStern Investor RelationsLauren Stival, 212-362-1200IR@StealthBT.com

STEALTH BIOTHERAPEUTICS CORP

Condensed Consolidated Statements of Operations

(inthousands,exceptshareandpersharedata)

(unaudited)

Three Months Ended September30,

Nine Months Ended September30,

2019

2018

2019

2018

Operating expenses:

Research and development

$ 9,820

$ 16,222

$ 33,514

$ 41,758

General and administrative

6,269

4,755

16,490

12,541

Total operating expenses

16,089

20,977

50,004

54,299

Loss from operations

(16,089)

(20,977)

(50,004)

(54,299)

Other income (expense):

Loss on extinguishment of debt

(22,700)

Change in fair value of derivative liability

4,331

2,782

(1,669)

Change in fair value of warrant liability

(300)

126

Interest income

223

60

773

141

Interest expense

(664)

(6,139)

(6,009)

(14,422)

Total other expense

(441)

(1,748)

(25,454)

(15,824)

Net loss attributable to ordinary shareholders

$ (16,530)

$ (22,725)

$ (75,458)

$ (70,123)

Net loss per share attributable to ordinary shareholders basic and diluted

$ (0.04)

$ (0.33)

$ (0.21)

$ (1.02)

Weighted average ordinary shares used in net loss per share attributable to ordinary shareholders basic and diluted

420,399,807

68,474,614

355,634,626

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Stealth BioTherapeutics Reports Third Quarter 2019 Financial Results And Recent Business Highlights - P&T Community