Aptose Biosciences Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Note 10 - Share Capital (Details Textual)

Note 10 - Share Capital (Details Textual) - USD ($)					3 Months Ended		6 Months Ended		11 Months Ended	12 Months Ended	18 Months Ended
Note 10 - Share Capital (Details Textual) - USD ($)	Jun. 03, 2024	Jan. 31, 2024	Sep. 06, 2023	May 25, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Apr. 30, 2024	Dec. 31, 2023	May 30, 2024	Apr. 01, 2024	Feb. 29, 2024	Aug. 10, 2023	Dec. 31, 2022	Dec. 09, 2022	Nov. 04, 2021
Nasdaq Listing Rule, minimum requirement for stockholders' equity					$ 2,500,000		$ 2,500,000			$ 2,500,000
Negative shareholder's equity					$ (2,176,000)	$ 13,786,000	(2,176,000)	$ 13,786,000		$ (2,901,000)					$ 37,741,000
Minimum market value of listed securities							35,000,000
Net income from continued operations							$ 500,000
Financing costs including underwriting costs, professional fees and recognition of deferred financing costs	$ 408,000,000	$ 1,400,000
Underwriting costs (as percent)	7.00%
Common Stock, Shares Outstanding					18,109,393		18,109,393			7,942,363
Cash proceeds from issuing shares								50,000
Common Shares [Member]
Negative shareholder's equity					$ 452,294,000	439,100,000	$ 452,294,000	439,100,000		$ 444,806,000					$ 437,520,000
Cash proceeds from issuing shares								50,000
Warrant [Member] \| Common Shares [Member]
Common warrants offering price		$ 1.71
Hanmi Pharmaceuticals Co Ltd [Member]
Proceeds from issuance of common stock			$ 3,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 1.71
Underwriting costs (as percent)		7.00%
Professional fees		$ 400,000
Warrants to purchase common shares, exchange price		$ 1.71
Number of common shares held																	215,703
Hanmi Pharmaceuticals Co Ltd [Member] \| Common Shares [Member]
Number of shares sold			668,449
Maximum [Member] \| Hanmi Pharmaceuticals Co Ltd [Member]
Investment for ownership interest														$ 7,000,000
Percentage of investment														19.99%
Minimum [Member]
Percentage of common shares outstanding.													19.99%
Private placement issuance percentage													20.00%
2023 Committed Equity Facility [Member]
Stock issuance program authorized shares				25,156
Common shares issued (in shares)										720,494
Proceeds from issuance of common stock										$ 2,100,000
Stock Issuance Program, Authorized Amount				$ 25,000,000
Percentage of common shares outstanding.				19.99%
Shares issued, price per share (in dollars per share)										$ 2.91
2023 Committed Equity Facility [Member] \| Keystone [Member]
Common shares issued (in shares)							510,101		1,230,595
Proceeds from issuance of common stock							$ 694		$ 2,800,000
Percentage of common shares outstanding.												19.99%
Shares issued, price per share (in dollars per share)					$ 1.36		$ 1.36		$ 2.27
Financing costs including underwriting costs, professional fees and recognition of deferred financing costs							$ 82,000		$ 168,000
2023 Committed Equity Facility [Member] \| Initial Commitment Shares [Member]
Common shares issued (in shares)				7,547
Stock Issuance, Percent of Cash Commission to Broker				30.00%
2023 Committed Equity Facility [Member] \| First Back-End Commitment Shares [Member]
Common shares issued (in shares)				7,547
Stock Issuance, Percent of Cash Commission to Broker				30.00%
2023 Committed Equity Facility [Member] \| Commitment Shares [Member]
Common shares issued (in shares)							10,062			15,094
2023 Committed Equity Facility [Member] \| Commitment Shares [Member] \| Keystone [Member]
Common shares issued (in shares)							10,062		25,156
The 2022 ATM Offering [Member]
Common shares issued (in shares)							81,591
Proceeds from issuance of common stock					$ 97,000	$ 1,109,000	$ 97,000	1,143,000			$ 2,000,000
Stock Issuance Program, Authorized Amount																$ 50,000,000
Shares issued, price per share (in dollars per share)					$ 1.22		$ 1.22
Proceeds from Issuance of Common Stock, Gross							$ 100,000,000				$ 2,100,000
Stock Issuance, Percent of Cash Commission to Broker					3.00%		3.00%
Cash proceeds from issuing shares							$ (21,000)	$ 1,138,000
The 2022 ATM Offering [Member] \| Common Shares [Member]
Common shares issued (in shares)							82,000	171,000
Cash proceeds from issuing shares							$ 97,000	$ 1,138,000
June 2024 Registered Direct Offering [Member]
Common shares issued (in shares)	1,800,000
Shares issued, price per share (in dollars per share)					$ 1.15		$ 1.15
Proceeds from Issuance of Common Stock, Gross	$ 4,430,000
June 2024 Registered Direct Offering [Member] \| Pre-Funded Warrants [Member]
Warrants issued	2,055,000
Warrants purchase price per share	$ 1.149
Private Placement [Member]
Warrants to purchase common shares, number of warrants	192,750
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.44
Warrants, Remaining contractual life	5 years
Warrants to purchase common shares, exchange price	$ 1.44
Private Placement [Member] \| Series A Warrants [Member]
Warrants, Remaining contractual life	5 years
Private Placement [Member] \| Series B Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 1.15
Warrants, Remaining contractual life	18 months
Warrants to purchase common shares, exchange price	$ 1.15
Private Placement [Member] \| Hanmi Pharmaceuticals Co Ltd [Member]
Common shares issued (in shares)		2,105,263
Proceeds from issuance of common stock		$ 4,000,000
Shares issued, price per share (in dollars per share)		$ 1.9
Private Placement [Member] \| Maximum [Member] \| Series A Warrants [Member]
Warrants to purchase common shares, number of warrants	3,855,000
Private Placement [Member] \| Maximum [Member] \| Series B Warrants [Member]
Warrants to purchase common shares, number of warrants	3,855,000
Public Offering [Member]
Common shares issued (in shares)		5,649,122
Public Offering [Member] \| Hanmi Pharmaceuticals Co Ltd [Member]
Proceeds from issuance of common stock		$ 9,700,000
Premium Share Price Percent		11.00%
Over-Allotment Option [Member]
Common shares issued upon exercise of stock options		$ 736,842