The Tokyo Stock Exchange remains under pressure to do more to protect minority shareholders during management buyouts, just weeks after requiring more disclosures on such deals.

Pacific Industrial Co., a supplier for Toyota Motor Corp., and car-care products maker Soft99 Corp. are among companies that have announced plans to go private in management buyouts, since new rules came into effect on July 22.

CapVest Partners is nearing a deal to acquire Stada Arzneimittel AG for around €10 billion ($11.7 billion) including debt, potentially ending the long-running saga to sell the German drugmaker, according to people familiar with the matter.

The London-based buyout firm is finalizing terms of an agreement with Stada’s private equity owners Bain Capital and Cinven, the people said. They could announce a deal as soon as Monday if there aren’t any last-minute hiccups, according to the people, who asked not to be identified because the information is private.