Updated Jul 16, 2026 · Last SEC filing 2026-05-18
SunCoke Energy, Inc. (SXC) has filed 6 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-05-18. 2 Form 8-K material event filings were reported by SXC in the last 90 days. InsiderAlpha tracks every SXC SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SEC CIK | 0001514705 |
|---|
| Form 4 filings (90d) | 6 |
|---|---|
| Form 8-K filings (90d) | 2 |
| Latest Form 4 filing | 2026-05-18 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Anton Arthur F | Director | A — Grant or award | 21.7K | $0.00 | — | SEC | |
| Mikhalevsky Andrei Alexander | Director | P — Open-market purchase | 5.0K | $5.53 | $28K | SEC | |
| Hardesty Phillip Michael | Senior Vice President | P — Open-market purchase | 291 | $5.82 | $2K | SEC | |
| Marinko Mark W. | SR VP, Chief Financial Officer | P — Open-market purchase | 9.6K | $5.84 | $56K | SEC | |
| Hardesty Phillip Michael | Senior Vice President | P — Open-market purchase | 12.2K | $5.83 | $71K | SEC | |
| Marinko Mark W. | SR VP, Chief Financial Officer | P — Open-market purchase | 400 | $5.83 | $2K | SEC | |
| Marinko Mark W. | SR VP, Chief Financial Officer | J — Other acquisition / disposition | 4.6K | — | — | SEC | |
| Hardesty Phillip Michael | Senior Vice President | M — Option exercise | 7.8K | — | — | SEC | |
| Hardesty Phillip Michael | Senior Vice President | F — Tax withholding / forfeiture | 3.7K | $6.22 | $23K | SEC | |
| Gates Katherine T | CEO and President | F — Tax withholding / forfeiture | 17.0K | $6.22 | $106K | SEC | |
| Marinko Mark W. | SR VP, Chief Financial Officer | M — Option exercise | 7.6K | — | — | SEC | |
| Hardesty Phillip Michael | Senior Vice President | F — Tax withholding / forfeiture | 4.1K | $5.88 | $24K | SEC | |
| Gates Katherine T | CEO and President | M — Option exercise | 17.9K | — | — | SEC | |
| Gates Katherine T | CEO and President | F — Tax withholding / forfeiture | 7.9K | $5.88 | $47K | SEC | |
| Marinko Mark W. | SR VP, Chief Financial Officer | F — Tax withholding / forfeiture | 3.8K | $5.88 | $22K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for SunCoke Energy, Inc. (SXC). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Della Ratta Ralph M Jr | 1 | — |
| Carnes Martha Z. | 1 | — |
| Anton Arthur F | 1 | — |
| Mikhalevsky Andrei Alexander | 1 | — |
| Lewis Michael Ward | 1 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in SXC insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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