| Filed | Form | Description | |
|---|---|---|---|
| 12/8/25 | F-1/A | F-1/A | → |
| 11/19/25 | FWP | FWP | → |
| 11/18/25 | F-1/A | F-1/A | → |
| 10/8/25 | F-1/A | F-1/A | → |
| 9/12/25 | F-1 | F-1 | → |
| Filed | Form | Description | |
|---|---|---|---|
| 12/31/25 | EFFECT | EFFECT | → |
| 6/18/25 | DRS/A | DRS/A | → |
| 6/2/25 | DRS/A | DRS/A | → |
| 5/9/25 | DRS/A | DRS/A | → |
| 3/13/25 | DRS | DRS | → |
Riku is both a masculine Finnish given name and a unisex Japanese given name.