it struck $4 billion worth of new contracts. What does "struck" mean?

The Swiss company said Monday it will buy privately held Frontier Drilling for $2.16 billion in cash and also struck $4 billion worth of new contracts with Royal Dutch Shell.

What does “struck” in the sentence above mean? I know it is past simple of “strike”. I have consulted many dictionaries but I can’t find proper meaning of it.
Thank you for help.

Struck here is past tense of strike, which in this sentence, means “striking” or making a business transaction or deal.