---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-040233"
form_type: "8-K"
ticker: "DINO"
cik: "0001915657"
company_name: "HF Sinclair Corp"
filed_at: "2023-02-15T23:59:59+00:00"
generated_at: "2026-06-19T12:16:03.329858+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# HF Sinclair names Tim Go CEO effective May 9, 2023, succeeding retiring Michael Jennings

## Summary
- Tim Go promoted to CEO and President effective May 9, 2023; he previously served as COO.
- Michael Jennings retires as CEO on May 8, 2023, then EVP Corporate until Nov 9, 2023, then consultant through Feb 9, 2024.
- Go's base salary raised to $1.1M, annual incentive target to 150% of salary, LTI grant of $3.75M.
- Jennings gets $100k/month as EVP, $1.2M prorated bonus, $50k/month consultant retainer.
- Jennings will not stand for re-election to board; board size decreases to 12.

## SEC filing metadata
- accession: 0001193125-23-040233
- form_type: 8-K
- ticker: DINO
- cik: 0001915657
- company_name: HF Sinclair Corp
- filed_at: 2023-02-15T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1915657/000119312523040233/0001193125-23-040233-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1915657/000119312523040233/d440769d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-040233
- JSON: https://secwatch.observer/filing/0001193125-23-040233.json
- Plain text: https://secwatch.observer/filing/0001193125-23-040233.txt

## Key facts
- Executive change
  Tim Go was appointed as Chief Executive Officer and President at HF Sinclair Corp.
  - Action: promoted
  - Role: Chief Executive Officer and President
  source text: the Board of Directors (the “ Board ”) of HF Sinclair Corporation (the “ Corporation ”) promoted Tim Go to the position of Chief Executive Officer and President of the Corporation, effective May 9, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312523040233/0001193125-23-040233-index.htm
- Executive change
  Tim Go was appointed as Director at HF Sinclair Corp.
  - Action: appointed
  - Role: Director
  source text: Effective February 16, 2023, the Board increased the size of the Board by one to thirteen, appointed Mr. Go as a non-independent director to the Board
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312523040233/0001193125-23-040233-index.htm
- Executive change
  Michael C. Jennings departed as Chief Executive Officer at HF Sinclair Corp.
  - Action: retire
  - Role: Chief Executive Officer
  source text: who notified the Corporation on February 14, 2023 that he will retire from the position of Chief Executive Officer, effective May 8, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312523040233/0001193125-23-040233-index.htm
- Executive change
  Michael C. Jennings was appointed as Executive Vice President, Corporate at HF Sinclair Corp.
  - Action: appointed
  - Role: Executive Vice President, Corporate
  source text: the Board appointed Mr. Jennings to the position of Executive Vice President, Corporate, of the Corporation, effective May 9, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312523040233/0001193125-23-040233-index.htm
- Executive change
  Michael C. Jennings departed as Director at HF Sinclair Corp.
  - Action: not stand for re-election
  - Role: Director
  source text: Mr. Jennings, who currently serves as a non-independent director on the Board, informed the Board and the Corporation on February 14, 2023 that he will not stand for re-election at the Corporation’s 2023 Annual Meeting of Stockholders, at which time Mr. Jennings’s term as director will expire
  evidence_url: https://www.sec.gov/Archives/edgar/data/1915657/000119312523040233/0001193125-23-040233-index.htm

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