technologies or potential markets, file for bankruptcy or cease operations altogether. Any of these events could have a material adverse effect on our business, financial condition and results of operations and result in a loss of investment by our stockholders.
Business Update Regarding COVID-19
In March 2020, the World Health Organization (“WHO”) declared COVID-19 a global pandemic and the United States declared a national emergency with respect to COVID-19.
The COVID-19 pandemic has directly and indirectly impacted our business, results of operations and financial condition and is expected to continue to impact our business. For example, the COVID-19 pandemic has resulted in delays in our clinical trials due to the implementation of COVID-19 protocols at investigator sites, which resulted in longer than anticipated site identification and initiation activities. In addition, while we currently do not anticipate any interruptions in our supply chain, it is possible that the COVID-19 pandemic and the continuing response efforts may have a future impact on our third-party suppliers and partners. It is possible that due to the continued development and manufacturing of vaccines for COVID-19, certain basic supply chain materials such as resins, vessels, vials and stoppers may be in high demand by the pharmaceutical companies developing and manufacturing vaccines and our ability to obtain these materials for our development activities could be negatively impacted. Although we have experienced some delays of this nature during 2021, such delays have not had a material adverse impact on our business, results of operations or financial condition.
The full extent of the COVID-19 pandemic impact continues to depend on future developments that remain highly uncertain and cannot be accurately predicted, including new information that may emerge concerning COVID-19, the actions taken to contain it or treat its impact, the identification and spread of COVID-19 variants such as the Delta and the Omicron variants, the distribution of vaccines, the acceptance of vaccines and the implementation of vaccine mandates, and the economic impact on local, regional, national and international markets. Management continues to actively monitor the developments regarding the pandemic and the impact that the pandemic could have on our financial condition, liquidity, ability to enroll patients in our contemplated clinical trials, manufacturing and research and development operations, suppliers to our operations and suppliers to our outside clinical trial organizations, biotech industry overall, and importantly the health and safety of our workforce. Given the continued volatility of the COVID-19 pandemic and the global responses to curb its spread, we are not able to estimate the effects of the COVID-19 pandemic on our results of operations, financial condition, or liquidity for 2022. Any recovery from negative impacts to our business and related economic impact due to the COVID-19 pandemic may also be slowed or reversed by a number of factors, including the recent widespread resurgence in COVID-19 infections attributable to the Omicron variant, combined with the seasonal flu.
Recent Events
NCFB Investigational New Drug (“IND”) Approval
On February 22, 2022, we announced that the FDA has cleared Armata's IND application to initiate a clinical trial of its optimized lead therapeutic candidate, AP-PA02, in a second indication, NCFB. The Company plans to initiate a Phase 2 trial in 2022.
February 2022 Private Placement
On February 9, 2022, we entered into a securities purchase agreement to sell our common stock and warrants to Innoviva Strategic Opportunities LLC, a wholly‐owned subsidiary of Innoviva, Inc. (Nasdaq: INVA) (collectively, "Innoviva"), our largest shareholder.
Pursuant and subject to the terms and conditions of the securities purchase agreement and related agreements, Innoviva agreed to purchase 9,000,000 newly issued shares of our common stock, at a price of $5.00 per share, and warrants to purchase up to 4,500,000 additional shares of our common stock, with an exercise price of $5.00 per share. The stock purchases were completed in two tranches. On February 9, 2022, Innoviva purchased 3,614,792 shares of