Members of Peta US have bought shares in the tour operator, allowing them to attend the meeting where they can address the floor on Thursday February 8.
They are protesting against Cook’s decision to continue selling tickets to SeaWorld in Orlando where orca whales perform tricks for the paying crowds.
PETA director Elisa Allen said: "Thomas Cook’s insistence on selling tickets to SeaWorld’s orca prisons has taken a toll on the travel company’s reputation.
"As a shareholder, PETA US will be able to push its management to do the responsible thing for shareholders and animals alike and cut ties with SeaWorld."
