According to EFF:

"The ads, which were paid for through crowdfunding, were scheduled to run on local (Little Rock) ABC, NBC, and Fox stations this week, but were taken off the schedule when the stations got the (Exxon) memo. In February, Exxon pulled the same stunt when Comcast was set to air the ad during the president's State of the Union address.

You can download Exxon's long memo at the EFF link.

Notable pull-line:

"Here at Exxon we hate your children." – Factually incorrect and cannot be substantiated."

Little Rock is close to the Exxon Mayflower tar sands oil spill site.

Here's a list of locations and stations where the commercial has aired this year.