The Genesis Essentia and Mint concepts seem destined for production, but some key details still need to be worked out.
Regarding the Essentia coupe, which was unveiled at 2018 Geneva motor show, Fitzgerald says, "It's just a matter of getting the powertrain equation right and defining which way we want to go with it".
Genesis is reportedly currently validating the car's chassis setup in addition to assessing its drivetrain options.
The Essentia concept had an electric drivetrain with multiple motors, and was said to be capable of completing the 0-100km/h dash in 3.0 seconds.
The Mint, which was only revealed at this year's New York motor show, seems a little further away from being a production reality.
Fitzgerald stated the company is currently "trying to get the right packaging" for the small electric vehicle. The concept had seating for two inside its sparse, but luxuriously-appointed interior.
The concept reportedly had a driving range of 300 kilometres, and was equipped with a 350kW fast charger.
The Genesis boss didn't give a timeline as to when either the Essentia or Mint will hit the market.
He did confirm the GV80, the company's first crossover vehicle, will go on sale in the US during the first quarter of 2020.
A GV80 prototype was spied earlier this month, and features the marque's pentagonal grille and two-tier tail-lights.