Quick Takeaways
- Robert J. Kostelnik has 2 issuer positions tracked on this page.
- Estimated disclosed ownership value: $4,650,245.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Robert J. Kostelnik
- Location
- Dallas, TX
- Summary
- The estimated net worth of Robert J. Kostelnik is at least $4,650,245 dollars as of 13 Nov 2025. Robert J. Kostelnik is the Director of HF Sinclair Corp and owns shares of HF Sinclair Corp (DINO) stock worth about $3.12M. Robert J. Kostelnik is the Director of HollyFrontier Corp and owns shares of HollyFrontier Corp stock worth about $1.53M.
- Signature
- Harrison Morris Attorney-in-Fact for Robert J. Kostelnik
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Robert J. Kostelnik and return when a new Insider Trading filing appears.
This tracks SEC filing changes for this page using existing product update flows.
What Changed
- Largest disclosed position: HF Sinclair Corp ($3,119,359).
- Past-year value change for that position: .
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Robert J. Kostelnik
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| DINO | HF Sinclair Corp | Director | $3,119,359 | 12 Nov 2025 | ||
| HFC | HollyFrontier Corp | Director | $1,530,886 | 10 Nov 2021 |
Insider Transactions Reported by Robert J. Kostelnik:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.