Filing Signals

Source: SEC EDGAR Compiled 2026-11-14 10:32 UTC 23 automated checks passing

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Karyopharm Therapeutics Inc.

CIK 1503802 KPTI·Pharmaceutical Preparations · All EDGAR filings ↗

Late filing high Filing comparison

Karyopharm Therapeutics Inc. filed its quarterly report late and said it expects a significant change in results

expects significant change in results Filed 1 day before the statutory due date.

(the “Company”) has determined that it is unable, without unreasonable effort or expense, to file its Quarterly Report on Form 10-Q for the quarter ended September 30, 2026 (the “Quarterly Report”) by the prescribed filing date or the five-day extension permitted by the rules of the Securities and Exchange Commission (the “SEC”). As previously announced, on November 2, 2026, the Company and its subsidiary KPT Texas LLC (together with the Company, the “Debtors”) filed voluntary petitions (the “Bankruptcy Petitions”) under Chapter 11 of title 11 of the United States Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the Southern District of Texas, Houston Division (such…
Evidence
Anticipates significant change
Yes
Days past due date
-1
Other periodic reports filed
Yes
Routine
No
Severity
high
Source
Form 12b-25 (notification of late filing)
Stated reason
(the “Company”) has determined that it is unable, without unreasonable effort or expense, to file its Quarterly Report on Form 10-Q for the quarter ended September 30, 2026 (the “Quarterly Report”) by the prescribed filing date or the five-day extension permitted by the rules of the Securities and Exchange Commission (the “SEC”). As previously announced, on November 2, 2026, the Company and its subsidiary KPT Texas LLC (together with the Company, the “Debtors”) filed voluntary petitions (the “Bankruptcy Petitions”) under Chapter 11 of title 11 of the United States Code (the “Bankruptcy Code”) in the United States Bankruptcy Court for the Southern District of Texas, Houston Division (such…
Why
The company told the SEC it could not file a periodic report on time, using Form 12b-25.