DINO HF SINCLAIR CORP Payment Defaults 8-K Filing 2025 - Tender Offer HF Sinclair Corporation has started a cash tender offer to buy back up to $900 million of its and HollyFrontier's senior notes, including $150 million of 6.375% notes due 2027 and 5.875% notes due 2026.Get access to all SEC 8-K filings of the HF SINCLAIR CORP