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APTOSE BIOSCIENCES INC (APTOF)

Institutional ownership, SEC filings and insider activity

Sector: Healthcare & Pharma · SEC CIK 0000882361 · EDGAR filings · Updated 2026-07-02

APTOSE BIOSCIENCES INC (APTOF) has reported institutional ownership of 0.9%, with 4 institutional managers holding positions valued at $40.0K per the latest 13F reporting period. SEC filings include an active substantial-doubt (going concern) disclosure per the filings.

Institutional ownership
0.9%
Institutional managers
4
Reported 13F value
$40.0K
Data flags
1 active
from SEC filings

Latest updates

Institutional ownership overview

According to SEC 13F filings tracked by Sightfile, APTOSE BIOSCIENCES INC has 4 institutional holders and institutional ownership of 0.9%.

Data flags from SEC filings

Active substantial-doubt (going concern) disclosure per the filings, most recently filed 2026-05-13 (recurring since 2023-03-24) — source filing. The authoritative details are those stated in the filing itself.

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See full history, cross-references and alerts on Sightfile
Sightfile provides information only — not investment advice, recommendations, or an assessment of any security. Data is derived from official public sources (SEC EDGAR and U.S. government agencies), may contain errors or delays, and should be verified against the source filing before relying on it.
Data sources: SEC EDGAR (filings, 13F, FTD), aggregated by Sightfile. Page updated 2026-07-02.