Aptose Biosciences Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Cover
- Document And Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Note 2 - Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Note 16 - Income Taxes (Tables)

v3.25.1

Note 16 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2024

Notes To Financial Statements [Abstract]

Schedule of Income before Income Tax, Domestic and Foreign

For the years ended December 31, 2024 and 2023, the total comprehensive loss is as follows:


	December 31, 2024			December 31, 2023
Loss attributed to U.S. foreign operations	$	(21,564	)	$	(45,652	)
Loss attributed to Canadian operations		(3,866	)		(5,555	)
Loss before income taxes	$	(25,430	)	$	(51,207	)

Schedule of Effective Income Tax Rate Reconciliation

Major items causing the Company’s income tax rate to differ from the statutory rate of approximately 26.5% (December 31, 2023 – 26.5%) are as follows:


	Year ended December 31, 2024			Year ended December 31, 2023
Net loss	$	(25,430	)	$	(51,207	)
Statutory Canadian corporate tax rate		26.5	%		26.5	%
Computed expected tax recovery	$	(6,739	)	$	(13,570	)
Non-deductible permanent differences		(765	)		873
Change in valuation allowance		6,740			13,059
Foreign tax rate differential		(4	)		(677	)
Prior year true-up adjustments		734			355
Other		34			(40	)
	$	—		$	—

Schedule of Deferred Tax Assets and Liabilities

The tax effects of temporary differences that give rise to significant portions of the unrecognized deferred tax assets are presented below:


	December 31, 2024			December 31, 2023
Net operating losses carried forward	$	79,951		$	73,552
Research and development expenditures		5,016			5,025
Property, equipment, and other intangible assets		7,265			7,321
Research and development tax credits		4,864			4,930
Financing costs		909			431
Right-of-use assets		13			19
Total deferred tax assets		98,018			91,278
Valuation allowance		(98,018	)		(91,278	)
Net deferred tax asset	$	—		$	—

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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