According to investigators, the thieves were armed with a shotgun and a pistol when they went into the bank on the North Freeway and Wellman Road on Wednesday, May 28 and demanded money.
They robbers off with cash in a stolen white minivan, the FBI said.
The crook pictured in the sketch had a pistol and wore a blue jogging suit.
The second robber carried a shotgun and wore a yellow hooded sweatshirt with black jogging pants.
Houston Crime Stoppers is offering a reward of up to $5,000 for information leading to an arrest.
If you have information about this crime, call 713-222-TIPS (8477) or the Houston FBI office at 713-693-5000.