Aptose Biosciences Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Note 16 - Subsequent Events (Details Textual)

Note 16 - Subsequent Events (Details Textual) - $ / shares		12 Months Ended
	Jan. 01, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		4,659,000	6,362,000	6,362,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)		$ 3.84		$ 6.81
Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		3,429,000	5,200,000
Options with Three Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)		430,000	862,000
Share-based Payment Arrangement, Tranche One [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50.00%	50.00%
Share-based Payment Arrangement, Tranche One [Member] \| Options with Three Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		50.00%	50.00%
Share-based Payment Arrangement, Tranche Two [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		16.67%	16.67%
Share-based Payment Arrangement, Tranche Two [Member] \| Options with Three Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		25.00%	25.00%
Share-based Payment Arrangement, Tranche Three [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		16.67%	16.67%
Share-based Payment Arrangement, Tranche Three [Member] \| Options with Three Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		25.00%	25.00%
Share-based Payment Arrangement, Tranche Four [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage		16.67%	16.67%
Subsequent Event [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	3,870,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)	$ 1.34
Subsequent Event [Member] \| Options with Three Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	425,000
Subsequent Event [Member] \| Share-based Payment Arrangement, Tranche One [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%
Subsequent Event [Member] \| Share-based Payment Arrangement, Tranche Two [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	16.67%
Subsequent Event [Member] \| Share-based Payment Arrangement, Tranche Two [Member] \| Options with Three Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	50.00%
Subsequent Event [Member] \| Share-based Payment Arrangement, Tranche Three [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	16.67%
Subsequent Event [Member] \| Share-based Payment Arrangement, Tranche Three [Member] \| Options with Three Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Subsequent Event [Member] \| Share-based Payment Arrangement, Tranche Four [Member] \| Options with Four Year Vesting [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	16.67%