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 $7.5M across reported positions. 15 SEC filings were submitted jointly with HollyFrontier Corp.
"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.
Charts
Trading activity, where the exposure sits, and each trade against the stock price.
HFC price and trades
Daily close with each Form 4 filing on this company marked: green = open-market buy, red = open-market sale, purple = grants, exercises, gifts and other non-market transactions. Marker size scales with the dollar value.
Shares held
Shares owned after each reported transaction on this company (direct holdings as reported).
Open-market buying and selling
by monthDollar value of open-market purchases (code P, up) and sales (code S, down) across all companies, by filing month. Grants, exercises and gifts are excluded.
Exposure by company
latestMost recently reported shares × current price. Faded bars (*) have had no filing in 3 years, so the person may no longer hold them. Click a bar to chart that company.
Filer Profile
2323 VICTORY AVE., SUITE 1400
DALLAS, TX 75219
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| DINO | Director | 59,598 | $125.29 | $7.47M | $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| 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 |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.