Arsenal Capital Partners completed the acquisition of ThermoSafe, a U.S.-based provider of temperature assurance technologies for pharmaceuticals and biologics, on December 31, 2025 for $725 million. The deal was announced on September 8, 2025.

Acquirer:Arsenal Capital Partners
Target:ThermoSafe
Type:Acquisition
Value:$725 million
Close Date:December 31, 2025
Sell-side Advisors:Morgan Stanley & Co.
Buy-side Advisors:Raymond James, Arsenal Capital Partners
Legal (buy):Kirkland & Ellis
Legal (sell):Freshfields

The healthcare-focused private equity firm acquired ThermoSafe to bolster its position in the pharmaceutical supply chain. The transaction includes all of ThermoSafe’s assets, which are currently owned by Sonoco, a diversified global packaging company based in Hartsville, South Carolina.

ThermoSafe's technology solutions ensure that temperature-sensitive biopharmaceutical products remain within safe parameters during transport and storage, an essential function for companies operating in the pharmaceutical and biotech sectors. The deal marks Arsenal Capital’s continued strategic focus on healthcare industry players with a strong track record of innovation and operational excellence.

Arsenal Capital Partners, founded in 2000, has offices in Boston and New York and focuses on investments across various health care segments including diagnostics, medical devices, pharmaceuticals, and related services. The firm aims to partner with management teams to accelerate growth through organic initiatives and strategic acquisitions.

With the ThermoSafe acquisition, Arsenal Capital is expected to help expand its presence in life sciences logistics while supporting Sonoco’s strategic pivot towards core packaging segments. This transaction also aligns with Arsenal Capital's commitment to building industry-leading companies that deliver value for all stakeholders.