AA ALCOA CORP Payment Defaults 8-K Filing 2025 - Debt Buyback On March 17, 2025, Alcoa Corporation announced the expiration of its offer to buy back 5.500% senior unsecured notes due 2027 and early results for purchasing up to $250 million of 6.125% senior unsecured notes due 2028.Get access to all SEC 8-K filings of the ALCOA CORP