The Company	9 Months Ended
Jan. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
The Company	1. The Company Company Background KalVista Pharmaceuticals, Inc. (“KalVista” or the “Company”) is a clinical stage pharmaceutical company focused on the discovery, development, and commercialization of small molecule protease inhibitors for diseases with significant unmet need. The Company applies its insights into the chemistry and biology of proteases to develop orally delivered, small molecule inhibitors with high selectivity, potency, and bioavailability that it believes will make them successful treatments for disease. The Company has used these capabilities to develop a proprietary portfolio of novel, small molecule plasma kallikrein inhibitors initially targeting hereditary angioedema (HAE). The Company is currently enrolling the Phase 3 KONFIDENT clinical trial to evaluate the safety and efficacy of sebetralstat as the first potential oral, on-demand therapy for HAE attacks. This worldwide, double-blind, placebo-controlled crossover trial will evaluate the response of adolescents and adults experiencing acute HAE attacks with two different doses of sebetralstat and placebo. Sebetralstat is the most advanced potential oral therapy for acute HAE attacks in clinical development, and is intended to provide a substantial improvement over the current on-demand standard of care for HAE attacks, which currently are only treated with injectable or infused therapies. The Company currently expects data from KONFIDENT to be available in the second half of 2023. The Company’s next anticipated program is an oral inhibitor of Factor XIIa, which plays a significant role in HAE and also has the potential to be developed in additional indications over time. The Company’s headquarters is located in Cambridge, Massachusetts, with additional offices located in Porton Down, United Kingdom, and Salt Lake City, Utah. Liquidity The Company has devoted substantially all of its efforts to research and development, including preclinical and clinical trials of its product candidates. The Company has not completed the development of any product candidates or commenced commercial operations. Pharmaceutical drug product candidates, like those being developed by the Company, require approvals from the FDA or foreign regulatory agencies prior to commercial sales. There can be no assurance that any product candidates will receive the necessary approvals and any failure to receive approval or delay in approval may have a material adverse impact on the Company’s business and financial results. The Company is subject to a number of risks and uncertainties similar to those of other life science companies developing new products, including, among others, the risks related to the necessity to obtain adequate additional financing, to successfully develop product candidates, to obtain regulatory approval of product candidates, to comply with government regulations, to successfully commercialize its potential products, to the protection of proprietary technology and to the dependence on key individuals. To date, the Company has not generated any product sales revenues and does not have any products that have been approved for commercialization. In December 2022, the Company completed a registered direct offering of common shares and pre-funded warrants that generated net proceeds of $57.7 million. As of January 31, 2023, the Company had an accumulated deficit of $316.8 million and $171.7 million of cash, cash equivalents and marketable securities. The Company does not expect to generate significant revenue unless and until it obtains regulatory approval for, and commercializes, one of its current or future product candidates. The Company anticipates that it will continue to incur losses for the foreseeable future, and it expects those losses to increase as it continues the development of, and seeks regulatory approvals for, product candidates, and begins to commercialize any approved products. The Company is subject to all of the risks inherent in the development of new therapeutic products, and it may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect its business. The Company currently anticipates that, based upon its operating plans and existing capital resources, it has sufficient funding to operate for at least the next twelve months. Until such time, if ever, as the Company can generate substantial revenues, it expects to finance its cash needs through a combination of equity or debt financings, collaborations, strategic partnerships and licensing arrangements. To the extent that additional capital is raised through the sale of stock, pre-funded warrants, or convertible debt securities, the ownership interest of existing stockholders may be diluted, and the terms of these newly issued securities may include liquidation or other preferences that adversely affect the rights of common stockholders. Debt financing, if available, may involve agreements that include increased fixed payment obligations and covenants limiting or restricting the Company’s ability to take specific actions, such as incurring additional debt, making capital expenditures, declaring dividends, selling or licensing intellectual property rights and other operating restrictions that could adversely impact its ability to conduct business. Additional fundraising through collaborations, strategic partnerships or licensing arrangements with third parties may require the Company to relinquish valuable rights to product candidates, including other technologies, future revenue streams or research programs, or grant licenses on terms that may not be favorable. If the Company is unable to raise additional funds when needed, it may be required to delay, limit, reduce or terminate product development or future commercialization efforts or grant rights to develop and commercialize other product candidates even if it would otherwise prefer to develop and commercialize such product candidates internally.

The Company

9 Months Ended

Jan. 31, 2023

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Company Background

KalVista Pharmaceuticals, Inc. (“KalVista” or the “Company”) is a clinical stage pharmaceutical company focused on the discovery, development, and commercialization of small molecule protease inhibitors for diseases with significant unmet need. The Company applies its insights into the chemistry and biology of proteases to develop orally delivered, small molecule inhibitors with high selectivity, potency, and bioavailability that it believes will make them successful treatments for disease. The Company has used these capabilities to develop a proprietary portfolio of novel, small molecule plasma kallikrein inhibitors initially targeting hereditary angioedema (HAE).

The Company is currently enrolling the Phase 3 KONFIDENT clinical trial to evaluate the safety and efficacy of sebetralstat as the first potential oral, on-demand therapy for HAE attacks. This worldwide, double-blind, placebo-controlled crossover trial will evaluate the response of adolescents and adults experiencing acute HAE attacks with two different doses of sebetralstat and placebo. Sebetralstat is the most advanced potential oral therapy for acute HAE attacks in clinical development, and is intended to provide a substantial improvement over the current on-demand standard of care for HAE attacks, which currently are only treated with injectable or infused therapies. The Company currently expects data from KONFIDENT to be available in the second half of 2023. The Company’s next anticipated program is an oral inhibitor of Factor XIIa, which plays a significant role in HAE and also has the potential to be developed in additional indications over time.

The Company’s headquarters is located in Cambridge, Massachusetts, with additional offices located in Porton Down, United Kingdom, and Salt Lake City, Utah.

Liquidity

The Company has devoted substantially all of its efforts to research and development, including preclinical and clinical trials of its product candidates. The Company has not completed the development of any product candidates or commenced commercial operations. Pharmaceutical drug product candidates, like those being developed by the Company, require approvals from the FDA or foreign regulatory agencies prior to commercial sales. There can be no assurance that any product candidates will receive the necessary approvals and any failure to receive approval or delay in approval may have a material adverse impact on the Company’s business and financial results. The Company is subject to a number of risks and uncertainties similar to those of other life science companies developing new products, including, among others, the risks related to the necessity to obtain adequate additional financing, to successfully develop product candidates, to obtain regulatory approval of product candidates, to comply with government regulations, to successfully commercialize its potential products, to the protection of proprietary technology and to the dependence on key individuals.

To date, the Company has not generated any product sales revenues and does not have any products that have been approved for commercialization. In December 2022, the Company completed a registered direct offering of common shares and pre-funded warrants that generated net proceeds of $57.7 million. As of January 31, 2023, the Company had an accumulated deficit of $316.8 million and $171.7 million of cash, cash equivalents and marketable securities. The Company does not expect to generate significant revenue unless and until it obtains regulatory approval for, and commercializes, one of its current or future product candidates. The Company anticipates that it will continue to incur losses for the foreseeable future, and it expects those losses to increase as it continues the development of, and seeks regulatory approvals for, product candidates, and begins to commercialize any approved products. The Company is subject to all of the risks inherent in the development of new therapeutic products, and it may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect its business. The Company currently anticipates that, based upon its operating plans and existing capital resources, it has sufficient funding to operate for at least the next twelve months.

Until such time, if ever, as the Company can generate substantial revenues, it expects to finance its cash needs through a combination of equity or debt financings, collaborations, strategic partnerships and licensing arrangements. To the extent that additional capital is raised through the sale of stock, pre-funded warrants, or convertible debt securities, the ownership interest of existing stockholders may be diluted, and the terms of these newly issued securities may include liquidation or other preferences that adversely affect the rights of common stockholders. Debt financing, if available, may involve agreements that include increased fixed payment obligations and covenants limiting or restricting the Company’s ability to take specific actions, such as incurring additional debt, making capital expenditures, declaring dividends, selling or licensing intellectual property rights and other operating restrictions that could adversely impact its ability to conduct business. Additional fundraising through collaborations, strategic partnerships or licensing arrangements with third parties may require the Company to relinquish valuable rights to product candidates, including other technologies, future revenue streams or research programs, or grant licenses on terms that may not be favorable. If the Company is unable to raise additional funds when needed, it may be required to delay, limit, reduce or terminate product development or future

commercialization efforts or grant rights to develop and commercialize other product candidates even if it would otherwise prefer to develop and commercialize such product candidates internally.