---
schema_version: "secwatch.filing_event.v1"
accession: "0001915657-24-000014"
form_type: "8-K"
ticker: "DINO"
cik: "0001915657"
company_name: "HF Sinclair Corp"
filed_at: "2024-02-06T23:59:59+00:00"
generated_at: "2026-06-06T08:35:33.610707+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# HF Sinclair amends bylaws to allow special meetings by 25% shareholders, adds procedural rules

## Summary
- Board amended bylaws effective Feb 3, 2024, permitting special meetings called by holders of ≥25% of voting power.
- Special meeting requests must specify purpose, matters to be acted on, and provide documentary evidence of ownership.
- Requests invalid if same matter presented within prior 90 days or during 90 days before annual meeting.
- Board retains ability to submit additional matters at any stockholder-requested special meeting.
- Amendments also update advance notice and director nomination procedures to align with new special meeting rules.

## SEC filing metadata
- accession: 0001915657-24-000014
- form_type: 8-K
- ticker: DINO
- cik: 0001915657
- company_name: HF Sinclair Corp
- filed_at: 2024-02-06T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1915657/000191565724000014/0001915657-24-000014-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1915657/000191565724000014/dino-20240205.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001915657-24-000014
- JSON: https://secwatch.observer/filing/0001915657-24-000014.json
- Plain text: https://secwatch.observer/filing/0001915657-24-000014.txt

## Key facts
- Governance Changes
  HF Sinclair Corp: Amended and Restated By-Laws to permit special meetings called by 25% stockholders, add procedural requirements, and make administrative changes (effective 2024-02-03).
  - Change: bylaw amendment
  - Effective: 2024-02-03
  source text: to, among other things, (i) permit special meetings of the stockholders of the Corporation to be called by stockholders of record owning at least 25% of the outstanding shares having voting power of the Corporation; (ii) include certain procedural requirements for stockholders who desire to submit a special meeting request; (iii) make certain corresponding changes to the advance notice and director nomination procedures to address the special meeting request procedures; and (iv) make other administrative, clarifying and conforming changes.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000191565724000014/0001915657-24-000014-index.htm

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