Forward-Looking Statements  | Corporate Overview   2  This presentation contains forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements reflect management’s current knowledge, assumptions, judgment and expectations regarding future performance or events. Although management believes that the expectations reflected in such statements are reasonable, they give no assurance that such expectations will prove to be correct, and actual results could differ materially from the forward-looking statements.Words such as “will,” “expect,” “intend,” “plan,” “predict,” “potential,” “possible,” and similar expressions identify forward-looking statements, including, without limitation, statements related to the scope, progress, expansion, and costs of developing and commercializing the Company’s product candidates; opportunity to benefit from anticipated regulatory incentives for product candidates; and anticipated expenses related to development activities, clinical trials and the development and potential commercialization of product candidates.Forward-looking statements are subject to risks and uncertainties including, but not limited to, the Company’s lack of revenues, history of operating losses, limited cash reserves and ability to obtain additional capital to develop and commercialize its product candidates, including the additional capital which will be necessary to complete the clinical trials that the Company has initiated or plans to initiate, and continue as a going concern; the Company’s ability to execute its revised strategy and business plan; the ability of the Company to list its common stock on a national securities exchange, whether through a new listing or by completing a reverse merger or other strategic transaction; the availability of a 505(b)(2) development pathway for the potential approval by FDA of the Company’s benznidazole candidate as a treatment for Chagas disease remaining acceptable to FDA in the future; the fact that a 505(b)(2) pathway does not assure a product candidate will be deemed safe or effective, or that FDA approval will be obtained; the requirement that the Company be first to receive FDA approval for benznidazole as a treatment for Chagas disease as a prerequisite to the Company’s ability to apply for or receive a Priority Review Voucher in respect of that candidate; the potential timing and outcomes of clinical studies of benznidazole, lenzilumab, ifabotuzumab or any other product candidates and the uncertainties inherent in clinical testing; the commercial viability of the Company’s proposed drug pricing program; the ability of the Company to timely source adequate supply of its development products from third-party manufacturers on which the Company depends; the potential, if any, for future development of any of its present or future products; the Company's ability to successfully progress, partner or complete further development of its programs; the ability of the Company to identify and develop additional products; the Company's ability to attain market exclusivity or to protect its intellectual property; competition; changes in the regulatory landscape that may prevent the Company from pursuing or realizing any of the expected benefits from the various regulatory incentives at the center of its strategy, or the imposition of regulations that affect the Company's products; and the various risks described in the "Risk Factors" and elsewhere in the Company's periodic and other filings with the Securities and Exchange Commission.You are cautioned not to place undue reliance on any forward-looking statements, which speak only as of the date of this presentation. The company has no obligation, and expressly disclaims any obligation to update, revise or correct any of the forward-looking statements, whether as a result of new information, future events or otherwise.  

 Priority Review Vouchers (PRVs) Create Options For Significant Potential Return   | Corporate Overview   7  Range of disclosed sale prices for PRVs is $67.5MM - $350MM      Rare Pediatric Diseases (RPD)  Neglected Tropical Diseases (NTD)  Holder of PRV can receive priority review for any NDA/BLA PRV can be sold to company seeking a competitive jumpKaloBios open to novel potential PRV transaction structures