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GNI Group buys Ayumi Pharmaceutical from Blackstone for ¥44.8bn

The Tokyo-listed drug developer adds a profitable domestic sales platform built on Calonal, while Blackstone exits its first Japanese buyout partly for GNI stock.

M&A News deals deskHealthcare / Pharmaceuticals · Japan, Asia-Pacific5 Jun 2026

GNI Group agreed on 5 June to acquire all of Ayumi Pharmaceutical Holdings, a specialist in pain relief and rheumatology drugs, from shareholders led by Blackstone in a deal valuing Ayumi at about ¥44.8bn.

Ayumi Pharmaceutical website: ayumi-pharma.com

Why GNI Group is buying Ayumi Pharmaceutical Holdings

GNI, which has drug development operations centred in China, said Ayumi's domestic sales network in rheumatology and orthopaedics would complement its research and development pipeline. It expects combined revenue of about ¥65.2bn in fiscal 2026.

Deal terms and financing

GNI paid part of the price by issuing 9,974,291 new shares at ¥2,684 each to Blackstone's BCP Asia AYM Holding, Toho Holdings and Hisamitsu Pharmaceutical as a contribution in kind, worth about ¥26.8bn; the balance was paid in cash. GNI also injected about ¥2.5bn into Ayumi at completion.

Regulatory approvals and timing

GNI said on 1 July 2026 that it had acquired all of Ayumi's shares and completed the share issue.

Market context

Ayumi's flagship Calonal holds more than 80% of Japan's acetaminophen market. Blackstone's Japan private equity head described Ayumi as the firm's first control private equity investment in Japan.

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