Brazil's Cia. Siderurgica Nacional SA (CSN) secured sufficient support from bondholders to proceed with a $1 billion debt exchange, granting the steelmaker vital financial breathing room as it contends with persistently high financing costs. The transaction, which involves swapping existing debt for new instruments with extended maturities and lower coupons, won approval after a protracted negotiation process.

This relief comes at a critical time for CSN, which has been grappling with elevated interest rates in Brazil that have squeezed margins and increased the burden of its sizable debt pile. The company, one of the country's largest integrated steel producers, has also faced headwinds from volatile iron ore prices and a sluggish domestic economy.

The successful debt exchange is expected to reduce CSN's near-term refinancing risk and lower its annual interest expense by several hundred million reais. Analysts at Banco Bradesco BBI called the deal a “positive catalyst” that could stabilize the company's credit profile.

Shares of CSN rose sharply on the news in São Paulo trading, reflecting investor optimism that the company has bought itself time to focus on operational improvements and capital allocation. The company's management, led by CEO Benjamin Steinbruch, reiterated its commitment to deleveraging and maintaining liquidity. The exchange is part of a broader strategy to cope with financial relief amid a challenging macroeconomic environment.