SXC's three largest insider shareholders as of September 29, 2026 are Michael G Rippey (Chief Executive Officer, 342.36K shares), Katherine T Gates (Ceo And President, 316.68K shares), Phillip Michael Hardesty (Senior Vice President, 298.68K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Michael G Rippey | Chief Executive Officer | 342,359 | 0 | 342,359 | 27.6% | 14 Mar, 2024 |
| 2 | Katherine T Gates | Ceo And President | 316,676 | 0 | 316,676 | 25.6% | 24 Feb, 2026 |
| 3 | Phillip Michael Hardesty | Senior Vice President | 298,677 | 0 | 298,677 | 24.1% | 26 Feb, 2026 |
| 4 | Arthur F Anton | Director | 95,571 | 0 | 95,571 | 7.7% | 18 May, 2026 |
| 5 | Ratta Ralph M Jr Della | Director | 86,293 | 0 | 86,293 | 7.0% | 06 Nov, 2025 |
| 6 | Mark W. Marinko | Sr Vp, Chief Financial Officer | 71,798 | 0 | 71,798 | 5.8% | 26 Feb, 2026 |
| 7 | John F Quanci | Chief Technology Officer | 19,922 | 0 | 19,922 | 1.6% | 24 Feb, 2026 |
| 8 | Andrei Alexander Mikhalevsky | Director | 7,000 | 0 | 7,000 | 0.6% | 02 Mar, 2026 |
| 9 | Bonnie M Edeus | Vice President Controller | 397 | 0 | 397 | 0.0% | 28 Feb, 2023 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 14 May, 2026 | Susan R. Landahl | Director | Acquired A | 21,652 | $0.00 | $0 | 75,214 | Direct |
| 14 May, 2026 | Andrei Alexander Mikhalevsky | Director | Acquired A | 21,652 | $0.00 | $0 | 62,921 | Direct |
| 14 May, 2026 | Martha Z. Carnes | Director | Acquired A | 21,652 | $0.00 | $0 | 75,214 | Direct |
| 14 May, 2026 | Arthur F Anton | Director | Acquired A | 21,652 | $0.00 | $0 | 95,571 | Direct |
| 14 May, 2026 | Ratta Ralph M Jr Della | Director | Acquired A | 36,585 | $0.00 | $0 | 73,175 | Direct |
| 14 May, 2026 | Michael Ward Lewis | Director | Acquired A | 21,652 | $0.00 | $0 | 75,214 | Direct |
| 26 Feb, 2026 | Andrei Alexander Mikhalevsky | Director | Acquired P | 5,000 | $5.53 | $27.65K | 7,000 | Direct |
| 25 Feb, 2026 | Mark W. Marinko | Sr Vp, Chief Financial Officer | Acquired P | 400 | $5.83 | $2.33K | 62,198 | Direct |
| 25 Feb, 2026 | Phillip Michael Hardesty | Senior Vice President | Acquired P | 12,209 | $5.83 | $71.18K | 298,386 | Direct |
| 25 Feb, 2026 | Phillip Michael Hardesty | Senior Vice President | Acquired P | 291 | $5.82 | $1.69K | 298,677 | Direct |
| 25 Feb, 2026 | Mark W. Marinko | Sr Vp, Chief Financial Officer | Acquired P | 9,600 | $5.84 | $56.06K | 71,798 | Direct |
| 24 Feb, 2026 | Katherine T Gates | Ceo And President | Acquired M | 17,878 | — | — | 265,079 | Direct |
| 23 Feb, 2026 | John F Quanci | Chief Technology Officer | Acquired M | 5,530 | $6.22 | $34.40K | 25,452 | Direct |
| 24 Feb, 2026 | Phillip Michael Hardesty | Senior Vice President | Acquired M | 8,683 | — | — | 271,366 | Direct |
| 24 Feb, 2026 | Mark W. Marinko | Sr Vp, Chief Financial Officer | Acquired M | 8,468 | — | — | 52,414 | Direct |
| 23 Feb, 2026 | John F Quanci | Chief Technology Officer | Disposed D | 5,530 | $6.22 | $34.40K | 19,922 | Direct |
| 24 Feb, 2026 | Katherine T Gates | Ceo And President | Disposed F | 7,920 | $5.88 | $46.57K | 257,159 | Direct |
| 24 Feb, 2026 | Phillip Michael Hardesty | Senior Vice President | Disposed F | 4,108 | $5.88 | $24.16K | 267,258 | Direct |
| 24 Feb, 2026 | Mark W. Marinko | Sr Vp, Chief Financial Officer | Disposed F | 3,752 | $5.88 | $22.06K | 48,662 | Direct |
| 23 Feb, 2026 | John F Quanci | Chief Technology Officer | Acquired M | 4,963 | $6.22 | $30.87K | 24,885 | Direct |