MKS shares surge 6.78% after-hours as €1B bond offering and refinancing reduce interest costs and extend debt maturities.

MKS Inc. surged 6.78% in after-hours trading following the announcement of a €1.0 billion private offering of 4.250% senior unsecured notes and a refinancing of its debt facilities. The refinancing extended the maturity of term loans to 2033 and the revolving credit facility to 2031, reduced interest rates, and replaced secured debt with unsecured debt, thereby decreasing annual interest expenses by $27 million and improving financial flexibility. The transaction diversifies MKS’ capital structure, extends debt maturities, and alleviates near-term balance sheet pressures, aligning with the stock’s positive after-hours performance.