I remember it was in an anthology of the best American works of fiction or something similar. It may have been the best american nonrequired reading anthology. I read it in the last two years and I believe it was published in the last five, but am not positive about the latter. I include it here because the story is somewhat dystopian - the corporation has become a huge player in world affairs.
The main character is a young man who joins a design team creating a new brand and logo for a google-out-of-control like organization.
During the story the man is afflicted by a mysterious cold-like sickness supposedly cause by plants on the property. He gets medicine from a semi-sinister doctor at the company, which helps him. They tell him that the sickness is due to allergies, but we never get the full explanation.
The main character goes for a swim each day and sees a woman sitting by the pool that he lacks the courage to talk to. During his last swim, he looks up and she is no longer there. He wonders whether he imagined her entirely.
The design team is led by a man who is somewhat obsessed with primality. He leads the team to break in to the headquarters of their rivals in the final act of the comic.
The last scene is the main character looking at a bloody handprint after injuring himself during the break in. He decides that this will be the new logo of the corporation.