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Tokyo court blocks Toho poison pill in test of anti-activist defences

By Thomson Reuters Sep 18, 2026 | 5:11 AM

TOKYO, Sept 18 (Reuters) – A Tokyo court on Friday blocked drug ​wholesaler Toho ‌Holdings’ takeover defence against an activist shareholder, in a closely watched case as ‌Japanese ​companies increasingly ⁠resort to ‘poison ⁠pill’ strategies against activist investors.

The Tokyo District Court granted an injunction ​sought by Singapore-based hedge fund 3D Investment ⁠Partners, Toho’s ⁠largest shareholder, blocking ​the company from issuing ​warrants that would dilute ‌the fund’s stake if it raised its holding above 24%.

The ⁠case tested whether companies can deploy poison pills, a discriminatory ⁠warrant ‌issuance designed ⁠to dilute a ​targeted ‌shareholder’s stake, against ​activist investors ⁠seeking to raise their stakes without pursuing outright control.

(Reporting by Makiko Yamazaki; Editing by Jan ​Harvey)