Samsung Biologics' rights offering is a bit unexpected

They earn a massive amount of money, so I wonder why they don't just take out a loan if they need immediate cash.
Perhaps they are doing this because, given the shareholder structure where 75% of the shares are held by Samsung Electronics and Samsung C&T, they expect the Samsung Group to shoulder most of the rights offering.
I'm not sure if it's just a way of pulling funds from wealthy affiliates.