Kaiser Aluminum Upgraded to Ba3 by Moody's on Improved Cash Flow and Debt Metrics

Moody's Ratings upgraded Kaiser Aluminum Corporation's (NASDAQ:KALU) corporate family rating to Ba3 from B1 on Thursday, attributing the move to significantly improved credit metrics and robust free cash flow. The credit agency also raised Kaiser's speculative grade liquidity rating to SGL-1 from SGL-2 and revised its outlook to stable from positive, signaling confidence in the aluminum producer's financial health.

Rationale for the Upgrade

The ratings action reflects Kaiser's successful completion of a period of heavy capital investment that expanded its capacity and enhanced its value-added capabilities, according to Moody's. The agency noted that these improvements have positioned the company to sustain higher earnings.

A key factor in the upgrade is Kaiser's conservative financial strategy, which includes a stated target net leverage ratio of between 2.0x and 2.5x. Moody's also highlighted the company's refined governance framework as a supporting element for the higher rating.

Strong Performance and Forward Outlook

Kaiser's operating performance strengthened considerably in the first half of 2026, fueled by strong demand from its core aerospace, defense, automotive, and packaging markets. Earnings were also boosted by a favorable metal price lag, which contributed $64 million in the first six months of the year.

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Looking ahead, Moody's projects Kaiser will generate adjusted EBITDA between $425 million and $450 million in 2026, a significant increase from $324 million in 2025. The agency also anticipates free cash flow will reach at least $100 million. However, Moody's warned of potential headwinds in late 2026 and into 2027, as falling aluminum prices could turn the metal price lag into a drag on profitability.

Balance Sheet and Liquidity

Kaiser's liquidity profile remains a key credit strength. As of June 2026, the company held $58.5 million in cash and had nearly $570 million available under its asset-based revolving credit facility.

With major capital expenditures now complete, Moody's expects the company will direct surplus cash toward dividend growth or share repurchases. The agency projects Kaiser's adjusted leverage will fall to approximately 2.5x in 2026, with interest coverage expanding to around 4.5x, keeping its credit metrics well within the parameters for the new Ba3 rating.