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
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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.

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

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of Robert J. Kostelnik

DINO Forms 3/4/5

HF Sinclair Corp

Relationship
Director
Holdings value
$3,119,359
Past year net change
Change %
Report period
12 Nov 2025
HFC Forms 3/4/5

HollyFrontier Corp

Relationship
Director
Holdings value
$1,530,886
Past year net change
Change %
Report period
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.
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