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Other Disclosures4591RIBOMIC Inc.Pharmaceuticals

Shareholder Newsletter “RIBOMICation vol.12”

The Company has commenced a Phase 3 clinical trial of umedaptanib pegol, a treatment for achondroplasia, and is advancing partnership discussions with pharmaceutical companies. It has also added a drug discovery support business and announced its policy of transitioning to a company with an Audit and Supervisory Committee.

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Announced details

umedaptanib pegol (anti-FGF2 aptamer)Drug discovery support business (drug delivery technology using lipid nanoparticles (LNPs) (DDS))
Applicable field (uses covered by this announcement)

Treatment of achondroplasia (ACH), drug discovery support for pharmaceutical companies, and drug delivery

Launch dateThe Phase 3 clinical trial commenced in spring 2026 (actual). The drug discovery support business was launched in the current fiscal year (no specific timing disclosed).
What the company reported numerically
Quantitative Effects

In the Phase 2 clinical trial, the 11 participants who completed dosing achieved an average height increase of +1.4 cm from baseline (p=0.04). In the Phase 3 clinical trial, an average annual height velocity of at least +3.0 cm is expected.

Usage history

12 participants in the Phase 2 clinical trial and 16 participants in the Phase 3 clinical trial

Relationship between the counterparty and the company
RIBOMIC Inc.4591
Relationship with the Company

The Company is advancing discussions with pharmaceutical companies regarding the licensing and partnership of umedaptanib pegol. It has already monetized the drug discovery support business through multiple companies.

Award/certification name

Orphan drug designation

Location (as indicated in this announcement)

6F, Shiroganedai Usui Building, 3-16-13 Shiroganedai, Minato-ku, Tokyo

25 employees (14 PhDs)
Impact on Business Performance

The Company aims to achieve sustainable business revenue. The drug discovery support business has already been monetized through multiple companies. The specific impact on business performance is Not disclosed.

The company does not address Contract Value / Offering price.

Source (materials cited by the company)

Discussions with PMDA (Japan's Pharmaceuticals and Medical Devices Agency)

Announced details
ItemDetails
Names of Products / Services Coveredumedaptanib pegol (anti-FGF2 aptamer), Drug discovery support business (drug delivery technology using lipid nanoparticles (LNPs) (DDS))
Relationship with the CompanyThe Company is advancing discussions with pharmaceutical companies regarding the licensing and partnership of umedaptanib pegol. It has already monetized the drug discovery support business through multiple companies.
Launch dateThe Phase 3 clinical trial commenced in spring 2026 (actual). The drug discovery support business was launched in the current fiscal year (no specific timing disclosed).
Applicable areaTreatment of achondroplasia (ACH), drug discovery support for pharmaceutical companies, and drug delivery
Award/certification nameOrphan drug designation
Location6F, Shiroganedai Usui Building, 3-16-13 Shiroganedai, Minato-ku, Tokyo
Location scale25 employees (14 PhDs)
Quantitative EffectsIn the Phase 2 clinical trial, the 11 participants who completed dosing achieved an average height increase of +1.4 cm from baseline (p=0.04). In the Phase 3 clinical trial, an average annual height velocity of at least +3.0 cm is expected.
Usage history12 participants in the Phase 2 clinical trial and 16 participants in the Phase 3 clinical trial
Impact on Business PerformanceThe Company aims to achieve sustainable business revenue. The drug discovery support business has already been monetized through multiple companies. The specific impact on business performance is Not disclosed.
SourceDiscussions with PMDA (Japan's Pharmaceuticals and Medical Devices Agency)
Items this document does not state (7)
CounterpartyCounterparty overviewContract ValueOffering priceContract DateAwarding / certifying bodyRegistration number and expiry date

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.

To achieve sustainable business revenue, strengthen the Board of Directors’ oversight function, accelerate decision-making by delegating authority for execution, and deliver new drugs to patients at an early stage.

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Shareholder Newsletter “RIBOMICation vol.12” | RIBOMIC Inc. (4591) timely disclosure | Komori