Lant was a Ferengi businessman in the 24th century.
In 2376, Lant used an alien piece of time travel technology to gain advantage in investment markets until he was stopped by the Starfleet Corps of Engineers. (SCE eBook: Buying Time)
In 2382, Lant was rumored to be funding Nart's temporal research in an effort to regain his temporal advantage. (DTI novel: Watching the Clock)