Interesting Apr call buys a@37.50,50, 55, 57.50,60,62.50 & 90 strike- quiet covering?

[Rob Cos]

Interesting call buys - deep in the money on the Aprils expiring Friday. Seems like quiet covering hoping not to drive stock up too much.

400 April 37.50s, 400 Ap 50, 1000+ April 55. 1067 april 57.50, 2015 April 60, 501 April 62.50 all in the money so they want stock - and then a real interesting 3206 April 90s with stock in 74s and 3 trading days left until expiration.

Shorty getting nervous? Or does a long know something.