ATLX's three largest insider shareholders as of September 29, 2026 are Marc Fogassa (Chief Executive Officer, 4.96Mn shares), Igor Tkachenko (Vp, Corporate Strategy, 343.63K shares), Roger Noriega (Director, 242.48K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Marc Fogassa | Chief Executive Officer | 4,963,785 | 0 | 4,963,785 | 85.8% | 24 Jul, 2026 |
| 2 | Igor Tkachenko | Vp, Corporate Strategy | 343,629 | 0 | 343,629 | 5.9% | 02 Sep, 2026 |
| 3 | Roger Noriega | Director | 242,476 | 0 | 242,476 | 4.2% | 04 May, 2026 |
| 4 | Tiago Miranda | Chief Financial Officer | 105,543 | 0 | 105,543 | 1.8% | 19 Aug, 2026 |
| 5 | Brian W. Bernier | V.P. Communications | 89,182 | 0 | 89,182 | 1.5% | 13 Sep, 2024 |
| 6 | Paiva Monteiro Joel De | Vp, Admin Ops, Esg Chief | 0 | 15,908 | 15,908 | 0.3% | 03 Jan, 2023 |
| 7 | Da Silva Junior Areli Nogueira | Vp, Mineral Exploration | 0 | 11,696 | 11,696 | 0.2% | 03 Jan, 2023 |
| 8 | Rodrigo Menck | Director | 11,450 | 0 | 11,450 | 0.2% | 22 Aug, 2024 |
| 9 | Volodymyr Myadzel | Senior Vp, Geology | 2,920 | 0 | 2,920 | 0.1% | 03 Jan, 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 |
|---|---|---|---|---|---|---|---|---|
| 31 Aug, 2026 | Igor Tkachenko | Vp, Corporate Strategy | Acquired A | 11,475 | $0.00 | $0 | 343,629 | Direct |
| 15 Jun, 2026 | Tiago Miranda | Chief Financial Officer | Disposed D | 30,000 | $0.00 | $0 | 0 | Direct |
| 15 Jun, 2026 | Tiago Miranda | Chief Financial Officer | Acquired A | 105,543 | $0.00 | $0 | 105,543 | Direct |
| 31 Jul, 2026 | Igor Tkachenko | Vp, Corporate Strategy | Acquired A | 10,803 | $0.00 | $0 | 332,154 | Direct |
| 22 Jul, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 26,420 | $3.01 | $79.61K | 4,964,973 | Direct |
| 23 Jul, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 2,243 | $3.02 | $6.77K | 4,962,730 | Direct |
| 30 Jun, 2026 | Igor Tkachenko | Vp, Corporate Strategy | Acquired A | 8,883 | $0.00 | $0 | 321,351 | Direct |
| 30 Jun, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 55,555 | $3.64 | $202.32K | 4,991,393 | Direct |
| 16 Jun, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 55,555 | $3.87 | $215.01K | 5,046,948 | Direct |
| 03 Jun, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 55,555 | $4.28 | $237.79K | 5,102,503 | Direct |
| 29 May, 2026 | Igor Tkachenko | Vp, Corporate Strategy | Acquired A | 7,143 | $0.00 | $0 | 312,468 | Direct |
| 20 May, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 55,555 | $4.33 | $240.66K | 5,157,613 | Direct |
| 06 May, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 55,555 | $5.51 | $306.27K | 5,213,168 | Direct |
| 22 Apr, 2026 | Marc Fogassa | Chief Executive Officer | Disposed D | 55,555 | $4.74 | $263.59K | 5,269,168 | Direct |
| 01 May, 2026 | Roger Noriega | Director | Disposed S | 7,725 | $5.50 | $42.49K | 247,476 | Direct |
| 01 May, 2026 | Roger Noriega | Director | Disposed S | 5,000 | $5.54 | $27.70K | 242,476 | Direct |
| 30 Apr, 2026 | Igor Tkachenko | Vp, Corporate Strategy | Acquired A | 7,692 | $0.00 | $0 | 305,325 | Direct |
| 16 Apr, 2026 | Tiago Miranda | Chief Financial Officer | Disposed S | 4,400 | $5.00 | $22.00K | 35,831 | Direct |
| 17 Apr, 2026 | Tiago Miranda | Chief Financial Officer | Disposed S | 5,831 | $5.03 | $29.33K | 30,000 | Direct |
| 15 Apr, 2026 | Roger Noriega | Director | Disposed S | 10,000 | $4.70 | $47.00K | 255,201 | Direct |