Why was HF Sinclair's CFO Atanas Atanasov terminated?

Atanas Atanasov was terminated after concerns raised by the audit committee led to his leave of absence since late February; during the review process—initiated in January after Atanasov raised concerns about CEO Timothy Go's actions and their impact on the 'tone at the top' for 2025 disclosures—separate concerns emerged about Atanasov's own behavior and the viability of his working relationships with the management team.

Who is currently serving as HF Sinclair's acting CFO, and since when?

Vivek Garg, the company's chief accounting officer, is currently serving as acting CFO, a role he has held since February.

HF Sinclair terminates CFO Atanas Atanasov

May 13, 2026

HF Sinclair terminated CFO Atanas Atanasov amid audit concerns, following the recent departure of CEO Timothy Go. Chief Accounting Officer Vivek Garg will assume the role of acting CFO.

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