Pyramid Deliveries was a freighting company that funded Dimensional Developments. They were behind Adrian Veidt's assassination attempt by Roy Victor Chess, as well as the creation of the alien, as a Pyramid Deliveries ship carried the designers of the alien from the island they worked on and exploded, killing everyone onboard, including Max Shea and Hira Manish. It was revealed that Pyramid Deliveries was headed by Veidt.
Pyramid Deliveries trucks could be seen driving around New York throughout the novel, including one that stopped at Bernard's newsstand to make use of the power hydrant. One even drove by Edward Blake's apartment as early as the third frame of the novel.
The company was named Pyramid Deliveries presumably as an homage to the Egyptian pyramids by Veidt, and their logo was a simple purple triangle enclosed by a circle.