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Kidswell Bio Corporation

4584Growth MarketPharmaceuticals

キッズウェル・バイオ株式会社 logo
Kidswell Bio Corporation4584

Pharmaceutical Development Business (Kidswell Bio Corporation single segment)

A hybrid biotech venture combining biosimilar supply and regenerative medicine development as its two core pillars

PeriodCurrentPreviousChange
Net sales (consolidated, full year)¥6,589 million¥5,082 million
Gross profit (consolidated, full year)¥1,747 million¥1,640 million
Operating income/loss (consolidated, full year)-¥138 million¥27 million
Ordinary income/loss (consolidated, full year)-¥374 million¥5 million
Net income/loss attributable to owners of parent (consolidated, full year)-¥413 million-¥21 million
R&D expenses (consolidated, full year)¥1,119 million¥767 million
Total assets¥6,088 million¥7,008 million
Equity ratio26.4%19.1%
Cash and cash equivalents at end of period¥3,294 million¥2,995 million
Net assets per share¥32.37¥30.50

Business Details

Operates two businesses: the biosimilar business (supply of API and related materials for four launched products) and the cell therapy business (development of regenerative medicine products utilizing deciduous tooth pulp stem cells, SQ-SHED). The company employs a "stability and growth compatibility" model, reinvesting stable earnings from the biosimilar business into research and development investment for the cell therapy business. Major customers are Senju Pharmaceutical (net sales of ¥3,468 million in the current period, 52.6% of net sales) and Mochida Pharmaceutical (¥2,240 million, 34.0%). The company has built a virtual R&D structure in which all manufacturing is outsourced to CDMOs.

Recent Overview

Net sales increased 29.7% year on year to ¥6,589 million, but the company fell into a consolidated operating loss due to a sharp rise in R&D expenses and an inventory write-off, among other factors

Full-year net sales for FY2026 (ending March 2026) reached ¥6,589 million (up 29.7% year on year), achieving an increase in revenue. This was driven by the full-year contribution of supply price revisions and the switch to products with reduced manufacturing costs, while R&D expenses surged to ¥1,119 million (up 46.1% year on year). In addition, non-operating expenses recorded in the interim period, including a ¥125 million inventory write-off related to biosimilar API and related materials and ¥75 million in syndicated loan arrangement fees, resulted in an operating loss of ¥138 million and an ordinary loss of ¥374 million. For the following fiscal year (FY2027, ending March 2027), the company expects to return to consolidated operating profitability due to the full-year contribution of supply price revisions and the switch to products with reduced manufacturing costs, disclosing a range forecast of net sales of ¥5,000 million to ¥6,000 million and operating income of ¥100 million to ¥600 million. In the cell therapy business, pipeline development advanced significantly, including the announcement of interim analysis results from the cerebral palsy clinical research, completion of a Pre-IND Meeting with the US FDA, and progress in preparations for domestic clinical trials with Mochida Pharmaceutical.

Key Products

product
Biosimilar API Supply (GBS-007 Ranibizumab)

The company's core product driving net sales. Stable supply continues based on solid market demand. The competitive environment is changing due to the listing of drug prices and launch of sales of aflibercept biosimilars and bio-AGs (authorized generics), and the impact on future sales trends is being conservatively estimated.

product
Biosimilar API Supply (GBS-010 Pegfilgrastim)

A product driving net sales alongside GBS-007. Steadily boosted performance in the current period based on solid market demand. Switching to products with reduced manufacturing costs progressed from the fourth quarter, expected to contribute to margin improvement from the following fiscal year onward.

product
Biosimilar API Supply (GBS-001/GBS-011)

GBS-001 and GBS-011 have reached a switching rate exceeding 80% from the originator biopharmaceuticals, including competitor products, and market share has remained stable. Supply price revisions, effective from the third quarter of the prior fiscal year, contributed on a full-year basis in the current period.

product
Cell Therapy Product (GCT-103 Allogeneic SQ-SHED, target disease: cerebral palsy)

Under a co-commercialization agreement with Mochida Pharmaceutical, Mochida Pharmaceutical is responsible for clinical trials and S-Quatre for manufacturing. GMP main manufacturing preparations are progressing steadily toward the start of domestic clinical trials. Agreement and advice on the corporate clinical trial plan were obtained through a Pre-IND Meeting with the US FDA, and IND application preparations are being advanced in collaboration with Treehill Partners.

platform
New Biosimilar Joint Development (Alfenax Biologics Joint Venture)

An agreement to establish the joint venture "Alfenax Biologics Corporation" was concluded in November 2025, and construction of manufacturing facilities has begun. Cell line construction for multiple new biosimilar candidate products is progressing smoothly. A portion of the development consideration from Alfresa Holdings was recorded as net sales in the current period. The project is subject to subsidies under the Ministry of Health, Labour and Welfare's support program for the establishment of domestic manufacturing facilities for biosimilars.

Growth Drivers

  • Full-year contribution of supply price revisions and the switch to products with reduced manufacturing costs in the following fiscal year is expected to improve margins in the biosimilar business
  • Stable securing of API and related material deliveries due to continued solid market demand for GBS-007 (Ranibizumab) and GBS-010 (Pegfilgrastim)
  • Stable maintenance of market share due to the achievement of a switching rate exceeding 80% from originator products for GBS-001 and GBS-011
  • Enhancement of pipeline value through progress in preparations for domestic clinical trials with Mochida Pharmaceutical for the cell therapy business (GCT-103) and preparations for a US IND application
  • Medium- to long-term expansion of the domestic biosimilar manufacturing and revenue base through the establishment of the Alfenax Biologics joint venture and the start of manufacturing facility construction
  • Diversification of future revenue sources through progress in cell line construction for multiple candidate products under new biosimilar joint development (three-company collaboration with Alfresa Holdings, Chiome, and MBI)
  • Strengthened financial base and stabilized cash flow through a syndicated loan totaling ¥2,500 million (arranged by Mizuho Bank), concluded in November 2025
  • Expansion of SQ-SHED indications through AMED adoption (hypoganglionosis) and joint research on infertility with UK-based LYMPHOGENiX, among others

Risks

  • Changes in the competitive environment and impact on future sales trends due to the listing of drug prices and launch of sales of aflibercept biosimilars and bio-AGs (authorized generics) in the GBS-007 market
  • Risk of increased manufacturing costs due to overseas price inflation and yen depreciation, as all biosimilar API manufacturing is outsourced to overseas CDMOs (with a time lag between revenue recognition timing and payment timing)
  • A material event related to going concern assumptions: the possibility of temporary negative period income due to continued R&D investment (although it has been determined that no material uncertainty exists)
  • The cell therapy business is in a stage of upfront R&D investment, carrying risks of delays or failures in clinical development and risk of the need for additional fundraising
  • High customer concentration risk, as net sales in the biosimilar business are highly concentrated among two companies, Senju Pharmaceutical (52.6%) and Mochida Pharmaceutical (34.0%)
  • Risk that continued annual drug price reductions under Japan's drug pricing system will persistently pressure profit margins
  • Operational risks in the manufacturing process, exemplified by the inventory write-off loss (¥125 million recorded in the current period), could be a factor causing downside deviation from earnings forecasts
  • The forecast for the following fiscal year is disclosed as a range (net sales of ¥5,000 million to ¥6,000 million, operating income of ¥100 million to ¥600 million), reflecting high uncertainty regarding changes in the competitive environment and clinical development expenses

Last updated: June 29, 2026