---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-139431"
form_type: "8-K"
ticker: "DINO"
cik: "0001915657"
company_name: "HF Sinclair Corp"
filed_at: "2024-05-15T23:59:59+00:00"
generated_at: "2026-06-01T23:41:41.830245+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# HF Sinclair CAO Indira Agarwal resigns; CFO Atanas Atanasov assumes duties

## Summary
- Indira Agarwal resigns as VP, Controller and CAO effective May 28, 2024 to pursue another opportunity.
- Resignation not due to any disagreement with the company or board.
- EVP/CFO Atanas H. Atanasov will serve as interim principal accounting officer until a permanent successor is named.
- Atanasov's biographical details are incorporated from the company's April 4, 2024 proxy statement.

## SEC filing metadata
- accession: 0001193125-24-139431
- form_type: 8-K
- ticker: DINO
- cik: 0001915657
- company_name: HF Sinclair Corp
- filed_at: 2024-05-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1915657/000119312524139431/0001193125-24-139431-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1915657/000119312524139431/d820405d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-139431
- JSON: https://secwatch.observer/filing/0001193125-24-139431.json
- Plain text: https://secwatch.observer/filing/0001193125-24-139431.txt

## Key facts
- Executive change
  Indira Agarwal resigned as Vice President, Controller and Chief Accounting Officer at HF Sinclair Corp.
  - Action: resigned
  - Role: Vice President, Controller and Chief Accounting Officer
  source text: On May 9, 2024, Indira Agarwal, Vice President, Controller and Chief Accounting Officer (principal accounting officer) of HF Sinclair Corporation (the “ Corporation ”), notified the Corporation that she is resigning from her role effective May 28, 2024 to pursue another opportunity.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312524139431/0001193125-24-139431-index.htm
- Executive change
  Atanas H. Atanasov was appointed as Principal Accounting Officer (interim) at HF Sinclair Corp.
  - Action: appointed
  - Role: Principal Accounting Officer (interim)
  source text: Until a permanent successor is appointed, Atanas H. Atanasov, the Corporation’s Executive Vice President and Chief Financial Officer, will assume the responsibilities of the Corporation’s principal accounting officer, effective as of May 28, 2024, in addition to his current role.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312524139431/0001193125-24-139431-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.