Per Business Quant, MAMO insiders together hold 32.37Mn shares based on their latest Form 4 filings, or 77.74% of the 41.64Mn shares outstanding; that total is unchanged from the end of Q2 2026 and Q3 2025.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | David Shan | Chief Executive Officer | 32,160,000 | 0 | 32,160,000 | 99.4% | 02 Jun, 2025 |
| 2 | Yunhao Chen | Chief Financial Officer | 133,334 | 0 | 133,334 | 0.4% | 02 Jun, 2025 |
| 3 | Michael Glenn Smith | Vice President | 50,000 | 0 | 50,000 | 0.2% | 02 Jun, 2025 |
| 4 | Mark Sheffield | Director | 9,000 | 0 | 9,000 | 0.0% | 02 Jun, 2025 |
| 5 | Ting Zhu | Director | 9,000 | 0 | 9,000 | 0.0% | 02 Jun, 2025 |
| 6 | Paolo Pietrogrande | Director | 9,000 | 0 | 9,000 | 0.0% | 03 Jun, 2025 |
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 |
|---|---|---|---|---|---|---|---|---|
| 29 May, 2025 | Paolo Pietrogrande | Director | Acquired A | 2,250 | $0.00 | $0 | 9,000 | Direct |
| 29 May, 2025 | Michael Glenn Smith | Other | Acquired A | 25,000 | $0.00 | $0 | 50,000 | Direct |
| 29 May, 2025 | David Shan | Chief Executive Officer | Acquired A | 37,500 | $0.00 | $0 | 32,160,000 | Direct |
| 29 May, 2025 | Ting Zhu | Director | Acquired A | 2,250 | $0.00 | $0 | 9,000 | Direct |
| 29 May, 2025 | Mark Sheffield | Director | Acquired A | 2,250 | $0.00 | $0 | 9,000 | Direct |
| 29 May, 2025 | Yunhao Chen | Chief Financial Officer | Acquired A | 25,000 | $0.00 | $0 | 133,334 | Direct |
| 20 Mar, 2025 | Paolo Pietrogrande | Director | Acquired A | 2,250 | $0.00 | $0 | 6,750 | Direct |
| 20 Mar, 2025 | Mark Sheffield | Director | Acquired A | 2,250 | $0.00 | $0 | 6,750 | Direct |
| 20 Mar, 2025 | Ting Zhu | Director | Acquired A | 2,250 | $0.00 | $0 | 6,750 | Direct |
| 02 Jan, 2025 | Mark Sheffield | Director | Acquired P | 50 | — | — | 4,917 | Direct |
| 22 Nov, 2024 | David Shan | Chief Executive Officer | Acquired A | 37,500 | $0.00 | $0 | 32,122,500 | Direct |
| 02 Dec, 2024 | Yunhao Chen | Chief Financial Officer | Acquired A | 27,778 | $0.00 | $0 | 108,334 | Direct |
| 22 Nov, 2024 | Mark Sheffield | Director | Acquired A | 2,250 | $0.00 | $0 | 4,500 | Direct |
| 22 Nov, 2024 | Ting Zhu | Director | Acquired A | 2,250 | $0.00 | $0 | 4,500 | Direct |
| 22 Nov, 2024 | Michael Glenn Smith | Vice President | Acquired A | 25,000 | $0.00 | $0 | 25,000 | Direct |
| 22 Nov, 2024 | Paolo Pietrogrande | Director | Acquired A | 2,250 | $0.00 | $0 | 4,500 | Direct |
| 22 Nov, 2024 | David Shan | Chief Executive Officer | Acquired A | 37,500 | $0.00 | $0 | 34,037,500 | Direct |
| 22 Nov, 2024 | Yunhao Chen | Chief Financial Officer | Acquired A | 25,000 | $0.00 | $0 | 80,556 | Direct |
| 22 Aug, 2024 | Ting Zhu | Director | Acquired A | 2,250 | $0.00 | $0 | 2,250 | Direct |
| 22 Aug, 2024 | Mark Sheffield | Director | Acquired A | 2,250 | $0.00 | $0 | 2,250 | Direct |