Answer

Use Bloomberg
Type BTR and hit GO to get Block Trade Recap
BTR lists trades of 10,000 to 1,000,000 shares on the secondary market. Search by exchange and by date going back 11 days.
Bloomberg stations are located on the 5th floor of Bobst Library, in the KMC UC-70 computer lab, 5th floor reading room, and CRC. Undergraduates may use the Bloomberg stations in the Tisch LC11-13-15 computer lab or on the 5th floor of Bobst library.