Actually it it is 3.4 million in shares and 1.7 million in cash for the IPO purchase..
"The approximately 1.2 million CanniMed Shares were acquired for a consideration of approximately 3.4 million Aurora shares and $1.7 million in cash. The CanniMed Shares were de-listed from the Toronto Stock Exchange (“TSX”) as at the close of business on May 1, 2018."