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Other Disclosures9218Mental Health Technologies Co.,Ltd.Information and Communications, Services and Others

Notice Regarding the Selection of Our Shares as a Constituent of the "TSE Growth Market 250 Index"

Our shares have been selected as a constituent of the TSE Growth Market 250 Index. Inclusion in the index is scheduled for 30 October 2026.

Worth reading
41Recurring
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
250
Stocks (standard number of index constituents)
Wording
Definitive
How definitive the wording is.

Announced details

TSE Growth Market 250 Index
Applicable field (uses covered by this announcement)

Stock market index

Launch date30 October 2026 (scheduled; date of inclusion in the index)
Relationship between the counterparty and the company
Mental Health Technologies Co.,Ltd.9218
Relationship with the Company

JPX Market Innovation & Research, Inc. calculates and publishes the index. Other capital, personnel, and business relationships are Not disclosed.

CounterpartyJPX Market Innovation & Research, Inc.

The company that calculates and publishes the TSE Growth Market 250 Index. Other information on its location, representative, capital, and year of establishment is Not disclosed.

Location (as indicated in this announcement)

4th Floor, Tokai Akasaka Building, 3-16-11 Akasaka, Minato-ku, Tokyo (our address)

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 (JPX) materials: “Periodic Replacement of Constituents in TOPIX and Other Stock Market Indices” and the results of the periodic selection for the “TSE Growth Market 250 Index” (conducted on 30 October 2026), including the list of constituents

Announced details
ItemDetails
Names of Products / Services CoveredTSE Growth Market 250 Index
CounterpartyJPX Market Innovation & Research, Inc.
Counterparty overviewThe company that calculates and publishes the TSE Growth Market 250 Index. Other information on its location, representative, capital, and year of establishment is Not disclosed.
Relationship with the CompanyJPX Market Innovation & Research, Inc. calculates and publishes the index. Other capital, personnel, and business relationships are Not disclosed.
Launch date30 October 2026 (scheduled; date of inclusion in the index)
Applicable areaStock market index
Location4th Floor, Tokai Akasaka Building, 3-16-11 Akasaka, Minato-ku, Tokyo (our address)
SourceJapan Exchange Group (JPX) materials: “Periodic Replacement of Constituents in TOPIX and Other Stock Market Indices” and the results of the periodic selection for the “TSE Growth Market 250 Index” (conducted on 30 October 2026), including the list of constituents
Items this document does not state (10)
Contract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocation scaleQuantitative EffectsUsage historyImpact 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.

In the periodic selection for the index announced on 7 October 2026, our shares were selected based on listed market capitalization.

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 Selection of Our Shares as a Constituent of the "TSE Growth Market 250 Index" | Mental Health Technologies Co.,Ltd. (9218) timely disclosure | Komori