HF Sinclair Corp (DINO) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 19, 2026.
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- Filings shown
- 10
- Open-market buys
- 2
- Open-market sells
- 2
- Buys, 10b5-1 box not checked
- 2 of 2
Counts cover the 10 most recent Form 4 filings Tradune holds for DINO (filed Jun 3 – Oct 19, 2026); the score below covers only the trailing 90 days (1 buy, 1 sell). No completed check of DINO's Form 4 list on SEC EDGAR is on record yet; the latest DINO filing Tradune holds was filed Oct 19, 2026. This is not guaranteed to be the complete record — see DINO's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 6 filings Tradune holds for DINO filed Aug 4 – Oct 19, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
1 open-market sale by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 0 sales· 0 sh
- checkbox disclosed
- On filings with the box not checked
- 1 sale· 8,936 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Franklin MyersCEO | 1 | 0 | 15,000 | — | +$1,279,500 |
| Dale KunnemanSVP and CHRO | 0 | 1 | — | 8,936 | −$755,852 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at DINO
Insiders reported 2 open-market purchases of DINO between Jun 3, 2026 and Oct 19, 2026, across 2 distinct buyers. The most recent purchase was reported by Franklin Myers (CEO) on Aug 11, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 839 | — | 197,723 | +0.4% | Oct 19, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 922 | — | 196,884 | +0.5% | Sep 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,121 | — | 195,962 | +0.6% | Aug 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 15,000 | $85.30 | 194,841 | +8.3% | Aug 11, 2026 |
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 8,936 | $84.59 | 42,561 | −17% | Aug 5, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Disposition to issuer | 2,375,000 | $89.41 | 8,881,662 | −21% | Aug 2, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,210 | — | 179,841 | +0.7% | Jul 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Grant / award | 1,578 | — | 178,631 | +0.9% | Jun 17, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market purchase 10b5-1 box not checked | 1,508 | $66.32 | 15,037 | +11% | Jun 16, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 635 | $73.09 | 16,543 | −3.7% | Jun 2, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to DINO's (Oct 19, 2026).
Frequently asked about DINO insider activity
How many insiders bought DINO stock in these Form 4 filings?
2 distinct insiders at HF Sinclair Corp reported 2 open-market purchases (Form 4 code P) of DINO shares between Jun 3, 2026 and Oct 19, 2026, the most recent filed by Franklin Myers (CEO) on Aug 11, 2026. Grants, option exercises, and tax-withholding transactions are excluded from these counts.
Who filed the most recent Form 4 for DINO?
The most recent Form 4 on this page was filed by Franklin Myers (CEO) on Oct 19, 2026, reporting 1 transaction. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market DINO insider purchase shown?
The largest open-market purchase among the filings shown was 15,000 DINO shares at $85.30 (about $1,279,500) by Franklin Myers (CEO) on Aug 11, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
Do the recent DINO insider purchases have the Form 4 10b5-1 box checked?
No. All 2 DINO open-market purchases shown were reported with the Rule 10b5-1 box not checked. A blank box records what the filer disclosed; it does not prove that no plan exists. Latest: Franklin Myers (CEO) on Aug 11, 2026, 15,000 shares.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track DINO insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.