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Kobayashi in ¥500 billion buyout talks after red-yeast case

Reported by Japantimes
Sep 25, 2026· 2 min read
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Key Takeaways
  • • Kobayashi Pharmaceutical is considering a ¥500 billion ($3.2 billion) take-private buyout offer from CVC Capital Partners and Nippon Sangyo Suishin Kiko (NSSK), with the founding family potentially participating in the transaction.
  • • The preliminary, nonbinding joint proposal represents a strategic exit opportunity for the Japanese health products manufacturer, which has faced significant valuation pressure following a red-yeast rice supplement contamination scandal that emerged in early 2024.
  • • Kobayashi's stock remains approximately 13% below pre-scandal levels, reflecting sustained market uncertainty tied to the contamination incident involving suspected deaths, product recalls, and a ¥12.7 billion charge.
  • • The company and its founding family have engaged financial advisers to evaluate the buyout proposal; no final decisions have been made as of the announcement date.
  • • A successful take-private transaction would remove Kobayashi from public markets during a period of reputational and financial recovery following the health products scandal.
Summary
Kobayashi Pharmaceutical, the Japanese consumer health products manufacturer at the center of a major supplement contamination scandal, is exploring a potential buyout valued at more than ¥500 billion ($3.2 billion) led by private equity firms CVC Capital Partners and Nippon Sangyo Suishin Kiko (NSSK). According to people familiar with the negotiations, Kobayashi's founding family may also participate in the transaction. The company received a preliminary, nonbinding joint proposal from NSSK and CVC Capital Partners affiliates on Friday, with Kobayashi noting that no decisions have been made at this stage.

The buyout discussions emerge as Kobayashi continues to navigate the aftermath of a red-yeast rice supplement contamination crisis that surfaced in early 2024. The scandal, which involved suspected deaths linked to consumption of contaminated products, triggered extensive recalls and forced the company to take a ¥12.7 billion charge against earnings. The reputational and financial impact has weighed heavily on equity valuations; Kobayashi's shares have remained approximately 13% below pre-incident levels, reflecting persistent investor concerns regarding brand recovery and future liability exposure.

For CVC Capital Partners and NSSK, a take-private transaction would provide an opportunity to acquire a well-established Japanese pharmaceutical and health products manufacturer at a valuation depressed by recent crisis-related headwinds. The involvement of Kobayashi's founding family suggests alignment among stakeholders on the strategic rationale for privatization during this recovery phase. Kobayashi has engaged financial advisers to evaluate the proposal as negotiations continue.

The potential transaction reflects a broader strategy within private equity markets to acquire established consumer health and pharmaceutical companies trading at cyclical lows due to temporary operational or reputational challenges, with the expectation that operational improvements and time can restore value outside public market scrutiny.

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Sources

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AlphaMaven summarised this story from the reporting below. Each link opens the original article.

Japantimes Kobayashi in ¥500 billion buyout talks after red-yeast case