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A controlling stake in a rare disease specialty pharmacy is set to change hands. A controlling stake means the buyer accumulates enough ownership to direct the company's major decisions.
Warburg Pincus is leading the investor group that agreed to acquire that position in PANTHERx Rare, a Pittsburgh-based pharmacy, in a deal announced July 13, 2026, with no financial terms made public.
The transaction as announced Warburg Pincus describes itself as the pioneer of global growth investing. The firm is heading a group of investors who will collectively take control of PANTHERx Rare.
The announcement confirms the agreement exists. It does not name the other investors or give a closing timeline. The exact percentage of ownership beyond "controlling" was also not disclosed.
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