128The applicant’s argument, put forward at the hearing, that it is apparent from paragraph 104 of the judgment of 23 February 2006, Cementbouw Handel & Industrie v Commission (T‑282/02, EU:T:2006:64) that the issue is whether control is acquired at the end of a series of transactions, regardless of when that control is acquired, must be rejected. It must be pointed out in that regard that paragraph 104 of that judgment mentions not the acquisition of the target undertaking which may proceed in one or more stages, but the acquisition of control which may proceed in one or more stages. The relevant question is not, therefore, when the acquisition of all the shares of a target undertaking took place but when the acquisition of control took place. It must be noted that where, as in the present case, the acquisition of de facto sole control of a single target undertaking took place by means of an initial transaction alone, subsequent transactions by which the acquirer obtains additional shares in that undertaking are no longer relevant for the purpose of acquiring control and thus of implementing the concentration.