Siegfried Secures Antitrust Green Light for US and Australia Drug‑Substance Site Takeover
All closing conditions satisfied for the acquisition of three small molecule sites in the US and Australia; closing to occur as of May 1, 2026. Transaction adds highly demanded US-based manufacturing capacity to Siegfried's global drug substances network.

Siegfried, a global Contract Development and Manufacturing Organization (CDMO) for the pharmaceutical industry, announced that all conditions required for the closing of its previously announced acquisition of three drug substances sites in the US and Australia from an affiliate of SK Capital Partners have been satisfied. The closing of the transaction will occur on May 1, 2026.
The transaction adds three high-quality small-molecule drug substances sites to Siegfried's global drug substances network: Noramco, a large commercial-scale manufacturing site in Wilmington, Delaware (US), Purisys, a clinical API development and manufacturing facility located in Athens, Georgia (US), and Extractas Bioscience, a manufacturer of purified products based in Westbury, Tasmania (Australia). The three sites employ around 400 people and will be part of Siegfried’s global network upon closing.
Siegfried intends to expand its fast-growing exclusive synthesis business in the US by optimizing its controlled substance capacity across the Wilmington site and its nearby Pennsville facility. Combined with the early-phase development capabilities in Athens and the extraction expertise of Extractas Bioscience, the acquisition strengthens Siegfried’s ability to support customers from early-phase development to commercial manufacturing.
Marcel Imwinkelried, CEO of Siegfried, commented: “Reaching this milestone represents another important step in the execution of our EVOLVE+ strategy. The additional US manufacturing capacity and complementary capabilities strengthen our position in small-molecule drug substances and support our ambition to deliver sustainable, profitable growth. We look forward to welcoming our new colleagues to Siegfried and to working together to further strengthen our global network and realize its full potential."











