STEX's three largest insider shareholders as of August 04, 2026 are Anthony N. Amato (Chief Executive Officer, 3.03Mn shares), Kenneth L Londoner (Chief Executive Officer, 2.73Mn shares), Frank Giustra (TenPercentOwner, 1.28Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Anthony N. Amato | Chief Executive Officer | 3,031,547 | 0 | 3,031,547 | 22.0% | 02 Jun, 2025 |
| 2 | Kenneth L Londoner | Chief Executive Officer | 2,726,720 | 0 | 2,726,720 | 19.8% | 04 Dec, 2023 |
| 3 | Frank Giustra | TenPercentOwner | 0 | 1,278,205 | 1,278,205 | 9.3% | 04 Feb, 2026 |
| 4 | Steve Chaussy | Chief Financial Officer | 1,051,553 | 0 | 1,051,553 | 7.6% | 02 Sep, 2022 |
| 5 | Mitchell Young Williams | Chief Investment Officer | 1,051,511 | 0 | 1,051,511 | 7.6% | 26 Jan, 2026 |
| 6 | Christine Marie Plummer | Chief Financial Officer | 986,497 | 0 | 986,497 | 7.2% | 17 Apr, 2026 |
| 7 | Frederick Hrkac | Director | 612,846 | 0 | 612,846 | 4.4% | 28 Apr, 2025 |
| 8 | Gray Fleming | Chief Commercial Officer | 463,556 | 0 | 463,556 | 3.4% | 05 Dec, 2023 |
| 9 | John Sieckhaus | Chief Operating Officer | 457,920 | 0 | 457,920 | 3.3% | 05 Dec, 2023 |
| 10 | James L Klein | Director | 299,249 | 0 | 299,249 | 2.2% | 18 Aug, 2023 |
| 11 | Ferdinand Groenewald | Cfo | 295,000 | 0 | 295,000 | 2.1% | 20 Nov, 2025 |
| 12 | Steven J Buhaly | Chief Financial Officer | 232,882 | 0 | 232,882 | 1.7% | 08 Feb, 2023 |
| 13 | Donald Browne | Director | 228,345 | 0 | 228,345 | 1.7% | 20 Nov, 2025 |
| 14 | Donald E Foley | Director | 221,999 | 0 | 221,999 | 1.6% | 18 Aug, 2023 |
| 15 | Patrick Joseph Gallagher | Director | 133,743 | 0 | 133,743 | 1.0% | 15 Aug, 2023 |
| 16 | Morgan Lee Lekstrom | Executive Chairman | 0 | 122,500 | 122,500 | 0.9% | 18 Feb, 2026 |
| 17 | Iv David Weild | Director | 114,999 | 0 | 114,999 | 0.8% | 18 Aug, 2023 |
| 18 | Christopher Allen Baer | Director | 103,345 | 0 | 103,345 | 0.7% | 28 Apr, 2025 |
| 19 | Steven Eric Abelman | Director | 103,345 | 0 | 103,345 | 0.7% | 28 Apr, 2025 |
| 20 | Kevin Roy Gopaul | Director | 100,000 | 0 | 100,000 | 0.7% | 07 Jan, 2026 |
| 21 | Anthony Mark Marciano | Director | 100,000 | 0 | 100,000 | 0.7% | 24 Feb, 2026 |
| 22 | James J Barry | Director | 71,249 | 0 | 71,249 | 0.5% | 18 Aug, 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 |
|---|---|---|---|---|---|---|---|---|
| 13 Apr, 2026 | Christine Marie Plummer | Chief Financial Officer | Disposed S | 10,922 | $1.10 | $11.98K | 489,078 | Direct |
| 15 Apr, 2026 | Christine Marie Plummer | Chief Financial Officer | Disposed S | 2,581 | $1.08 | $2.79K | 486,497 | Direct |
| 16 Mar, 2026 | Christine Marie Plummer | Chief Financial Officer | Acquired A | 500,000 | $0.00 | $0 | 500,000 | Direct |
| 23 Feb, 2026 | Anthony Mark Marciano | Director | Acquired A | 100,000 | $0.00 | $0 | 100,000 | Direct |
| 18 Feb, 2026 | Morgan Lee Lekstrom | Executive Chairman | Acquired P | 20,000 | $2.50 | $50.00K | 122,500 | Indirect |
| 04 Feb, 2026 | Frank Giustra | TenPercentOwner | Acquired P | 100,000 | $3.17 | $317.00K | 1,278,205 | Indirect |
| 03 Feb, 2026 | Morgan Lee Lekstrom | Director, TenPercentOwner | Acquired P | 23,500 | $3.06 | $71.91K | 102,500 | Indirect |
| 29 Jan, 2026 | Morgan Lee Lekstrom | Director, TenPercentOwner | Acquired P | 2,500 | $3.70 | $9.25K | 79,000 | Indirect |
| 26 Jan, 2026 | Morgan Lee Lekstrom | Director, TenPercentOwner | Acquired P | 23,000 | $3.30 | $75.90K | 71,000 | Indirect |
| 27 Jan, 2026 | Morgan Lee Lekstrom | Director, TenPercentOwner | Acquired P | 5,500 | $3.12 | $17.16K | 76,500 | Indirect |
| 23 Jan, 2026 | Frank Giustra | TenPercentOwner | Acquired P | 1,000,000 | $3.00 | $3.00Mn | 1,178,205 | Indirect |
| 23 Jan, 2026 | Mitchell Young Williams | Chief Investment Officer | Acquired P | 51,511 | $3.03 | $155.85K | 1,051,511 | Direct |
| 23 Jan, 2026 | Mitchell Young Williams | Chief Investment Officer | Acquired P | 51,511 | $3.03 | $155.85K | 1,051,511 | Direct |
| 23 Jan, 2026 | Mitchell Young Williams | Chief Investment Officer | Acquired P | 51,511 | $3.03 | $155.85K | 1,051,511 | Direct |
| 23 Jan, 2026 | Morgan Lee Lekstrom | Director | Acquired P | 41,000 | $3.13 | $128.49K | 48,000 | Indirect |
| 23 Jan, 2026 | Mitchell Young Williams | Chief Investment Officer | Acquired P | 51,511 | $3.03 | $155.85K | 1,051,511 | Direct |
| 05 Jan, 2026 | Kevin Roy Gopaul | Director | Acquired A | 100,000 | $0.00 | $0 | 100,000 | Direct |
| 21 Nov, 2025 | Morgan Lee Lekstrom | Director | Acquired P | 7,000 | $3.58 | $25.06K | 7,000 | Indirect |
| 18 Nov, 2025 | Ferdinand Groenewald | Cfo | Acquired A | 60,000 | $0.00 | $0 | 295,000 | Direct |
| 18 Nov, 2025 | Donald Browne | Director | Acquired A | 125,000 | $0.00 | $0 | 228,345 | Direct |