The mega-merger with pharmaceutical distributor Sigma Healthcare has minted billions for the pharmacy chain’s three founders and spawned more than 100 millionaires, with their stakes worth between $5 and $25 million. The mega-merger with pharmaceutical distributor Sigma Healthcare has minted billions for the pharmacy chain’s three founders and spawned more than 100 millionaires, with their stakes worth between $5 and $25 million. Business / Companies Sydney Morning Herald – Latest News