Yes, you can declare them as a single position as they have the same ISIN. There is also only one entry per ISIN in ICTax.
BTW: Your broker may be able to consolidate the positions if you want to simplify your broker statements going forward. This wouldn’t require any trading but the broker may still charge a fee for this.
there’s a box Mitarbeiteraktien. check that in both.
there’s a box Gesperrt/locked. check that for the locked ones. there’ll be a reduced value used for these, when calculating your “Vermögen”.