As of September 09, 2026, the three largest insider holders of MREO are Charles Sermon (General Counsel, 219.06K shares), Christine Ann Fox (Chief Financial Officer, 89.28K shares), John A. Lewicki (Chief Scientific Officer, 78.63K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Charles Sermon | General Counsel | 219,061 | 0 | 219,061 | 48.7% | 16 Sep, 2024 |
| 2 | Christine Ann Fox | Chief Financial Officer | 89,285 | 0 | 89,285 | 19.8% | 16 Sep, 2024 |
| 3 | John A. Lewicki | Chief Scientific Officer | 78,630 | 0 | 78,630 | 17.5% | 16 Sep, 2024 |
| 4 | Alexandra Hughes-Wilson | Officer | 50,475 | 0 | 50,475 | 11.2% | 16 Sep, 2024 |
| 5 | Jeremy Bender | Director | 0 | 12,550 | 12,550 | 2.8% | 17 Jun, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 26 Feb, 2026 | Daniel Shames | Director | Acquired A | 66,000 | $0.00 | $0 | 66,000 | Direct |
| 26 Feb, 2026 | Pierre Jacquet | Director | Acquired A | 66,000 | $0.00 | $0 | 66,000 | Direct |
| 26 Feb, 2026 | Daniel Shames | Director | Acquired A | 66,000 | $0.00 | $0 | 66,000 | Direct |
| 26 Feb, 2026 | Jeremy Bender | Director | Acquired A | 66,000 | $0.00 | $0 | 66,000 | Direct |
| 26 Feb, 2026 | Daniel Shames | Director | Acquired A | 66,000 | $0.00 | $0 | 66,000 | Direct |
| 26 Feb, 2026 | Anders Ekblom | Director | Acquired A | 66,000 | $0.00 | $0 | 66,000 | Direct |
| 26 Feb, 2026 | Annalisa Jenkins | Director | Acquired A | 66,000 | $0.00 | $0 | 66,000 | Direct |
| 26 Feb, 2026 | Daniel Shames | Director | Acquired A | 96,163 | — | — | 96,163 | Direct |
| 26 Feb, 2026 | Daniel Shames | Director | Acquired A | 96,163 | — | — | 96,163 | Direct |
| 26 Feb, 2026 | Anders Ekblom | Director | Acquired A | 133,560 | — | — | 133,560 | Direct |
| 26 Feb, 2026 | Pierre Jacquet | Director | Acquired A | 106,848 | — | — | 106,848 | Direct |
| 26 Feb, 2026 | Annalisa Jenkins | Director | Acquired A | 106,848 | — | — | 106,848 | Direct |
| 26 Feb, 2026 | Jeremy Bender | Director | Acquired A | 117,533 | — | — | 117,533 | Direct |
| 26 Feb, 2026 | Daniel Shames | Director | Acquired A | 96,163 | — | — | 96,163 | Direct |
| 01 Feb, 2026 | Alexandra Hughes-Wilson | Officer | Acquired A | 183,750 | $0.00 | $0 | 183,750 | Direct |
| 01 Feb, 2026 | Charles Sermon | General Counsel | Acquired A | 315,750 | $0.00 | $0 | 315,750 | Direct |
| 01 Feb, 2026 | Christine Ann Fox | Chief Financial Officer | Acquired A | 315,750 | $0.00 | $0 | 315,750 | Direct |
| 01 Feb, 2026 | Charles Sermon | General Counsel | Acquired A | 315,750 | $0.00 | $0 | 315,750 | Direct |
| 01 Feb, 2026 | John A. Lewicki | Chief Scientific Officer | Acquired A | 139,913 | $0.00 | $0 | 139,913 | Direct |
| 01 Feb, 2026 | Charles Sermon | General Counsel | Acquired A | 315,750 | $0.00 | $0 | 315,750 | Direct |