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Robert J. Kostelnik

CIK 1507989 · last filed 2025-11-13

Robert J. Kostelnik is a corporate insider who has filed 20 SEC Form 4 insider transactions across 3 companies since 2011. The most recent filing, for DINO, was dated Nov 13, 2025. Across all open-market trades the lifetime net is −$92.4K, making them a net seller over the disclosed history. Current disclosed insider exposure totals $4.2M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$4.25M

Companies

3

Total Filings

20

Lifetime Open-Market Net

-$92.4K

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
DINO Director 59,598 $71.26 $4.25M $0 4 2025-11-13
HollyFrontier Corp (HFC) Delisted Director 47,235 $36.39 $1.72M -$92.4K 14 2021-11-10
FRONTIER OIL CORP /NEW/ (FTO) Delisted Director 0 — — $0 2 2011-07-01

Recent Filings

20 filings
Form 4 transactions across all companies, newest first.
Filed Symbol Action Net Shares Net $ Link
2025-11-13 DINO Grant (A) +2,943 $0 EDGAR
2024-11-14 DINO Grant (A) +3,772 $0 EDGAR
2023-11-09 DINO Grant (A) +3,005 $0 EDGAR
2022-11-09 DINO Grant (A) +2,643 $0 EDGAR
2021-11-10 HollyFrontier Corp (HFC) Delisted Grant (A) +4,180 $0 EDGAR
2020-11-13 HollyFrontier Corp (HFC) Delisted Grant (A) +6,573 $0 EDGAR
2019-11-15 HollyFrontier Corp (HFC) Delisted Grant (A) +2,663 $0 EDGAR
2018-12-04 HollyFrontier Corp (HFC) Delisted Sell (S) −1,500 -$92.4K EDGAR
2018-11-08 HollyFrontier Corp (HFC) Delisted Grant (A) +1,982 $0 EDGAR
2017-11-09 HollyFrontier Corp (HFC) Delisted Grant (A) +3,190 $0 EDGAR
Showing 1–10 of 20
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Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.