Refiner HF Sinclair CFO Atanas Atanasov takes voluntary leave of absence

Group 1 - HF Sinclair's CFO Atanas Atanasov has taken a voluntary leave of absence, following a similar request from CEO Tim Go just a week prior [1] - The company initiated an internal review of its disclosure processes after Atanasov raised concerns about the "tone at the top" related to the 2025 disclosure processes [1] - The board later developed concerns regarding Atanasov's actions, leading to his leave of absence request [1] Group 2 - HF Sinclair completed the internal review and concluded that the executives' actions did not create an unfavorable "tone at the top" regarding the 2025 disclosure processes [1] - The company's disclosure controls and procedures remain effective [1] - Vivek Garg has been appointed as the interim CFO, while Franklin Myers serves as the interim CEO [1]