Pyxis Oncology Reports Financial Results for the Fiscal Year Ended December 31, 2022, and Provides Corporate Update

Preliminary data from two Phase 1 trials anticipated late 2023 to early 2024

First subject dosed in Phase 1 trial of PYX-201; clinical sites being activated and patient screening underway in Phase 1 trial of PYX-106

Strong balance sheet with $180.7 million in cash (including restricted cash) and no debt as of year-end 2022 supports operations into 1H 2025

CAMBRIDGE, Mass., March 22, 2023 (GLOBE NEWSWIRE) — Pyxis Oncology, Inc. (Nasdaq: PYXS), a clinical-stage company focused on developing next-generation therapeutics to target difficult-to-treat cancers, today reported financial results for the full year ended December 31, 2022, and provided a corporate update.

“Over the past year, our team has made significant progress in advancing PYX-201, our antibody-drug conjugate (ADC) product candidate, and PYX-106, our immunotherapy product candidate, into Phase 1 clinical trials,” said Lara S. Sullivan, M.D., President and Chief Executive Officer of Pyxis Oncology. “Our strong balance sheet gives us a cash runway into the first half of 2025 as we continue to advance these programs for patients. We anticipate preliminary data from both trials, including biomarker results and potential early signs of clinical activity, in late 2023 to early 2024.”

Recent Corporate Updates

• Two Phase 1 trials initiated: Clinical sites are being activated and patient screening is ongoing in the Phase 1 trial of PYX-106, referred to as PYX-106-101, and dosing is expected to begin early in the second quarter of 2023. Subject dosing is underway in the Phase 1 trial of PYX-201, known as PYX-201-101. Preliminary data are anticipated from both trials in the late-2023 to early-2024 timeframe.
• PYX-201 nonclinical data published: A peer-reviewed article titled “Quantification of antibody-drug conjugate PYX-201 in rat and monkey plasma via ELISA and its application in preclinical studies” was published online in Bioanalysis. This publication described the ELISA assay that was successfully validated for the measurement of PYX-201 concentrations in rat and monkey plasma in support of the Company’s successful IND application.
• Abstracts submitted to ASCO: Abstracts for trial in progress (TIP) posters describing the PYX-106-101 and PYX-201-101 Phase 1 clinical trials were submitted to the American Society of Clinical Oncology (ASCO) Annual Meeting, to be held June 2-6, 2023, in Chicago.
• Two INDs cleared by FDA: In November 2022, clearance for the PYX-106 and PYX-201 Investigational New Drug (IND) applications was received from the U.S. Food and Drug Administration (FDA).

Full-Year 2022 Financial Results

• As of December 31, 2022, Pyxis Oncology had cash and cash equivalents (including restricted cash) of $180.7 million, which is expected to fund operations into the first half of 2025.
• Research and development expenses were $86.1 million for the year ended December 31, 2022, compared to $51.0 million for the year ended December 31, 2021. The increase was primarily due to increased expenses associated with contract manufacturing of drug products and drug substance, preclinical costs related to toxicity studies and preclinical work in support of IND filings, clinical trial costs, and an increase in employee headcount to support research and development activities.
• General and administrative expenses were $37.4 million for the year ended December 31, 2022, compared to $18.7 million for the year ended December 31, 2021. The increase was primarily due to higher personnel-related expenses, including stock-based compensation, and increases in legal and professional fees, rent and directors and officers insurance expenses to support our growth and operations.
• Net loss was $120.7 million, or ($3.65) per common share, for the year ended December 31, 2022, compared to $76.0 million, or ($8.95) per common share, for the year ended December 31, 2021. Net losses for the years ended December 31, 2022 and 2021 included $15.8 million and $6.4 million, respectively, related to non-cash stock-based compensation expense.
• As of March 21, 2023, the outstanding number of shares of Common Stock of Pyxis Oncology was 36,980,621.

Pam Connealy, Chief Financial Officer of Pyxis Oncology, added, “As our clinical programs have advanced, our team has established a strong financial foundation with no debt and a cash runway into the first half of 2025. We expect our balance sheet will enable us to evaluate early signs of clinical activity in our two clinical programs and initiate tumor-specific expansion cohorts following dose selection.”

About Pyxis Oncology, Inc.
Pyxis Oncology, Inc. is a clinical stage company focused on defeating difficult-to-treat cancers. The company is efficiently building next-generation therapeutics that hold the potential for mono and combination therapies. Pyxis Oncology’s therapeutic candidates are designed to directly kill tumor cells and to address the underlying pathologies created by cancer that enable its uncontrollable proliferation and immune evasion. Pyxis Oncology’s antibody-drug conjugates (ADCs) and immuno-oncology (IO) programs employ novel and emerging strategies to target a broad range of solid tumors resistant to current standards of care. To learn more, visit www.pyxisoncology.com or follow us on Twitter and LinkedIn.

Forward-Looking Statements
This press release contains forward-looking statements for the purposes of the safe harbor provisions under The Private Securities Litigation Reform Act of 1995 and other federal securities laws. These statements are often identified by the use of words such as “anticipate,” “believe,” “can,” “continue,” “could,” “estimate,” “expect,” “intend,” “likely,” “may,” “might,” “objective,” “ongoing,” “plan,” “potential,” “predict,” “project,” “should,” “to be,” “will,” “would,” or the negative or plural of these words, or similar expressions or variations, although not all forward-looking statements contain these words. We cannot assure you that the events and circumstances reflected in the forward-looking statements will be achieved or occur and actual results could differ materially from those expressed or implied by these forward-looking statements. Factors that could cause or contribute to such differences include, but are not limited to, those identified herein, and those discussed in the section titled “Risk Factors” set forth in Part II, Item 1A. of the Company’s Annual Report on Form 10-K filed with SEC on March 22, 2023, and in our other filings with the SEC. These risks are not exhaustive. New risk factors emerge from time to time, and it is not possible for our management to predict all risk factors, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date hereof and while we believe such information forms a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain, and investors are cautioned not to unduly rely upon these statements. Except as required by law, we undertake no obligation to update any forward-looking statements to reflect events or circumstances after the date of such statements.

Pyxis Oncology Contact
Jennifer Davis Ruff
VP, Investor Relations
jdavisruff@pyxisoncology.com

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