PUMA BIOTECHNOLOGY, INC.

This Proxy Statement contains forward-looking statements within the meaning of Section 21E of the Securities Exchange Act of 1934, as amended, including, but not limited to, statements related to risks associated with our compensation programs. All forward-looking statements included in this Proxy Statement involve risks and uncertainties that could cause the Company’s actual results to differ materially from the anticipated results and expectations expressed in these forward-looking statements. These statements are based on current expectations, forecasts and assumptions, and actual outcomes and results could differ materially from these statements due to a number of factors, which include, but are not limited to, the Company’s dependence on the commercial success of its product candidates, the Company’s history of operating losses and its expectation that it will continue to incur losses for the foreseeable future; risks and uncertainties related to the Company’s ability to achieve or sustain profitability; the Company’s ability to predict its future prospects and forecast its financial performance and growth; failure to obtain sufficient capital to fund the Company’s operations; the effectiveness of sales and marketing efforts; the Company’s ability to obtain regulatory approval of NERLYNX outside the United States; the Company’s licensees’ ability to obtain FDA approval or other regulatory approvals in the United States or elsewhere for other indications for neratinib or other product candidates; the challenges associated with conducting and enrolling clinical trials; the risk that the results of clinical trials may not support the Company’s drug candidate claims; the Company’s ability to compete against other companies and research institutions; the risk that physicians and patients may not accept or use the Company’s products; the Company’s reliance on third parties to conduct its clinical trials and to formulate and manufacture its drug candidates; risks pertaining to litigation, including the Company’s estimates for damages that it may be required to pay; the protection for its intellectual property; the Company’s ability to attract and retain key personnel; the Company’s dependence on licensed intellectual property; any adverse impact on the Company’s business or the global economy and financial markets, generally; and the other risk factors disclosed in the periodic and current reports filed by the Company with the Securities and Exchange Commission from time to time, including the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024. Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date hereof. The Company assumes no obligation to update these forward-looking statements, except as required by law.