Aptose Biosciences Inc.

APTOF · OTC · SIC 2836: Biological Products, (No Diagnostic Substances)
681
SEC Filings

Business Summary

Cautionary Note Regarding Forward-Looking Statements. As used in this report, the terms Aptose, Aptose Biosciences, the Company, "the "Corporation," we, us, our and similar references refer to Aptose Biosciences Inc. (formerly known as Lorus Therapeutics Inc.) and our consolidated subsidiaries, and the term Common Shares refers to our common shares, no par value. Aptose had historically qualified as a foreign private issuer for purposes of reporting under the Exchange Act, and filing registratio...

Next Earnings

Q2 FY2026 — expected 2026-09-21

Key Facts from Earnings Calls

TypeSubjectDetailQuarter
topic_mentionAPTOFdiscussed_in_filing Cybersecurity
topic_mentionAPTOFdiscussed_in_filing Cybersecurity
topic_mentionAPTOFdiscussed_in_filing Healthcare & Bio
topic_mentionAPTOFdiscussed_in_filing Healthcare & Bio

Annual Reports (10-K)

FiledPeriodAccessionSourceFull Text
2026-03-312025-12-310001193125-26-135012EDGAR80K words
2025-03-282024-12-310000950170-25-046366EDGAR—
2024-03-262023-12-310000950170-24-036537EDGAR—
2023-03-242022-12-310000950170-23-009560EDGAR—
2022-03-222021-12-310001171843-22-002048EDGAR—
2021-03-232020-12-310001171843-21-002006EDGAR—
2020-03-102019-12-310001171843-20-001617EDGAR—
2019-03-122018-12-310001171843-19-001661EDGAR—

Quarterly Reports (10-Q)

FiledPeriodAccessionSourceFull Text
2025-11-132025-09-300001193125-25-280433EDGAR29K words
2025-08-132025-06-300000950170-25-108110EDGAR—
2025-05-082025-03-310000950170-25-066391EDGAR—
2024-11-122024-09-300000950170-24-124343EDGAR—
2024-08-082024-06-300000950170-24-094205EDGAR—
2024-05-142024-03-310000950170-24-059768EDGAR—
2023-11-092023-09-300000950170-23-062207EDGAR—
2023-08-102023-06-300000950170-23-041441EDGAR—
2023-05-082023-03-310000950170-23-018923EDGAR—
2022-11-012022-09-300001171843-22-006964EDGAR—
2022-08-022022-06-300001171843-22-005260EDGAR—
2022-05-092022-03-310001171843-22-003463EDGAR—

Recent Current Reports (8-K)

FiledAccessionSourceFull Text
2026-03-310001171843-26-002103EDGAR3K words
2026-03-310001193125-26-134870EDGAR—
2026-03-230001193125-26-119951EDGAR—
2026-03-230001171843-26-001837EDGAR—
2026-03-190001171843-26-001777EDGAR—
2026-02-240001193125-26-064847EDGAR—
2025-12-190001171843-25-008045EDGAR—
2025-12-080001171843-25-007795EDGAR—
2025-11-250001193125-25-294108EDGAR—
2025-11-190001171843-25-007415EDGAR—

681 total filings indexed. 651 additional filings (S-1, DEF 14A, etc.) View all (JSON) · SEC EDGAR

Sector Peers

FDMT — 4D Molecular Therapeutics, Inc. APTN — ADAPTIN BIO, INC. ADMA — ADMA BIOLOGICS, INC. AGEN — AGENUS INC AIM — AIM ImmunoTech Inc. AMGN — AMGEN INC AVXL — ANAVEX LIFE SCIENCES CORP. ABPO — Abpro Holdings, Inc.

Company Identity

CIK0000882361
TickerAPTOF
ExchangeOTC
SIC2836: Biological Products, (No Diagnostic Substances)
IncorporatedA6

Get More Data

This is the free public profile. For structured JSON with full provenance chain, use the API:

JSON Profile Stock Quote AI Readiness Report
Origin Provenance
page leaf: a2b0942b5d7203ba265f3b83b7e508b8b489c04b3f7a003b9669254c4e62488b
parent: ce00a88bbeec91f9032b230878b611b1c5b21d996c6d803223792046ff0331b2
content hash: 6c9218394a6279495d34e979ee8c89e04e30abe449155cc52adc8f8ff45bd419
signed: 2026-04-13T04:43:41.884Z
sources: 20 verified data leaves
chain: SEC.gov PEM → origin.rootz.global extraction → this page
verify: sha256(content_hash + parent + timestamp) = leaf