1. Allowances auctioned pursuant to Article 4(2) of this Regulation shall be transferred by the Union registry prior to the deadline for their delivery into a nominated holding account, to be held in escrow by the clearing system or settlement system acting as custodian, until delivery of the allowances to successful bidders or their successors in title, pursuant to the results of the auction, as provided for in the applicable Commission regulation adopted pursuant to Article 19(3) of Directive 2003/87/EC.
2. Allowances auctioned pursuant to Article 4(3) of this Regulation shall be transferred by the Union registry prior to the opening of a bidding window, into a nominated holding account, to be held in escrow by the clearing system or settlement system acting as custodian, until delivery of the allowances to successful bidders or their successors in title, pursuant to the results of the auction, as provided for in the applicable Commission regulation adopted pursuant to Article 19(3) of Directive 2003/87/EC.