Komori
Other Disclosures4588Oncolys BioPharma Inc.Pharmaceuticals

Notice Regarding the Inclusion of Our Shares in the TOPIX Index

Our shares will be newly included among the constituents of the Tokyo Stock Price Index (TOPIX) from 30 October 2026.

Worth reading
54Recurring
0–100. This measures how worthwhile something is to read, not how good or bad the company is.
Direction
Improvement
Direction inferred from the company’s description.
Scale
35
Number of newly added constituents (including our company, companies)
Wording
Conditional
How definitive the wording is.

Announced details

Telomelysin Injection, Next-Generation Telomelysin
Applicable field (uses covered by this announcement)

Market benchmarks for the stock market and benchmarks for financial products such as ETFs

Launch date30 October 2026 (scheduled; start of inclusion among the constituents of TOPIX)
What the company reported numerically
Usage history

TOPIX is indexed with the market capitalisation on 4 January 1968 set at 100

Relationship between the counterparty and the company
Oncolys BioPharma Inc.4588
Relationship with the Company

Relationship arising from Japan Exchange Group's announcement that our shares will be included among the constituents of TOPIX. Capital, personnel, and ordinary business relationships are Not disclosed.

CounterpartyJapan Exchange Group

Japan Exchange Group, which operates and publishes TOPIX. Other information, including location, representative, business activities, capital, and year established, is Not disclosed.

Location (as indicated in this announcement)

Expected to comprise 1,669 of approximately 3,700 listed companies (986 excluding 683 companies subject to transitional measures)

In this announcement the company addresses none of Contract Value / Offering price / Impact on Business Performance.

Source (materials cited by the company)

Japan Exchange Group

Announced details
ItemDetails
Names of Products / Services CoveredTelomelysin Injection, Next-Generation Telomelysin
CounterpartyJapan Exchange Group
Counterparty overviewJapan Exchange Group, which operates and publishes TOPIX. Other information, including location, representative, business activities, capital, and year established, is Not disclosed.
Relationship with the CompanyRelationship arising from Japan Exchange Group's announcement that our shares will be included among the constituents of TOPIX. Capital, personnel, and ordinary business relationships are Not disclosed.
Launch date30 October 2026 (scheduled; start of inclusion among the constituents of TOPIX)
Applicable areaMarket benchmarks for the stock market and benchmarks for financial products such as ETFs
Location scaleExpected to comprise 1,669 of approximately 3,700 listed companies (986 excluding 683 companies subject to transitional measures)
Usage historyTOPIX is indexed with the market capitalisation on 4 January 1968 set at 100
SourceJapan Exchange Group
Items this document does not state (9)
Contract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocationQuantitative EffectsImpact on Business Performance

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

Japan Exchange Group announced that our shares will be newly included among the constituents of TOPIX. The Representative Director stated that the company recognises that its flagship products and corporate value have received significant recognition.

How to read this page

This is not the documentKomori reads the disclosure the company filed and writes this summary. Figures are as stated by the company and are not audited.
Weight is not a verdictIt measures how much this changes what the company had already told the market. It is not a view on the shares.
Corrections happenIf the company reissues this disclosure, the page is rebuilt from the corrected version and the revision number moves up.
Notice Regarding the Inclusion of Our Shares in the TOPIX Index | Oncolys BioPharma Inc. (4588) timely disclosure | Komori