---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-284380"
form_type: "8-K"
ticker: "DINO"
cik: "0001915657"
company_name: "HF Sinclair Corp"
filed_at: "2023-11-28T23:59:59+00:00"
generated_at: "2026-06-07T21:13:51.591809+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# HF Sinclair stockholders approve merger stock issuance; HEP unitholders approve merger; close expected Dec 1

## Summary
- Over 99% of HF Sinclair votes cast approved stock issuance for HEP merger; 151.7M for, 455k against.
- Over 84% of outstanding HEP common units voted to approve merger agreement.
- Merger expected to close December 1, 2023, making HEP an indirect wholly owned subsidiary.
- Both stockholder and unitholder approvals obtained; remaining conditions to be satisfied.

## SEC filing metadata
- accession: 0001193125-23-284380
- form_type: 8-K
- ticker: DINO
- cik: 0001915657
- company_name: HF Sinclair Corp
- filed_at: 2023-11-28T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.07, 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1915657/000119312523284380/0001193125-23-284380-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1915657/000119312523284380/d680641d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-284380
- JSON: https://secwatch.observer/filing/0001193125-23-284380.json
- Plain text: https://secwatch.observer/filing/0001193125-23-284380.txt

## Key facts
- Shareholder Votes
  HF Sinclair Corp shareholders approved To approve the adjournment of the HF Sinclair Special Meeting to a later date or dates, if necessary or appropriate, to solicit additional proxies in the event there are not sufficient votes at the time of the HF Sinclair Special Meeting to approve the HF Sinclair Stock Issuance Proposal at the 2023-11-28 meeting.
  - Outcome: passed
  - Meeting: 2023-11-28
  source text: it was approved by the requisite vote as follows: FOR AGAINST ABSTAIN BROKER NON-VOTES 143,049,590 9,062,483 254,886 0
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312523284380/0001193125-23-284380-index.htm
- Shareholder Votes
  HF Sinclair Corp shareholders approved To approve the issuance of shares of HF Sinclair Common Stock pursuant to the Agreement and Plan of Merger at the 2023-11-28 meeting.
  - Proposal: merger approval
  - Outcome: passed
  - Meeting: 2023-11-28
  source text: The HF Sinclair Stock Issuance Proposal was approved by the requisite vote as follows: FOR AGAINST ABSTAIN BROKER NON-VOTES 151,697,156 455,202 214,601 0
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312523284380/0001193125-23-284380-index.htm

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