1 Form 4 filings for GSM between 2026-08-20 and 2026-08-20, from 1 filer. 1 discretionary (0 sales, 1 purchases). 1 of 1 state a filing-level total, summing to $138,856; the rest report only their largest transaction, so the true figure is higher.
| Filed | Filer | Role | Action | Shares largest txn | Price | Filing total | Txns |
|---|---|---|---|---|---|---|---|
| 2026-08-20 | Garcia Cos Muntanola Beatriz | acquired | 36,784 | — | $138,856 | 3 | |
| 1 filings · 1 filers · disclosed totals only | $138,856 (1/1) | — | |||||