After four podium-less seasons during which Haas scored just 52 points in total, team principal Guenther Steiner and technical director Simone Resta left the squad last winter.
The former was replaced by ex-trackside engineering director Komatsu while the latter's position was taken over by Andrea de Zordo, who used to be the outfit's chief engineer.
These decisions were made amid team founder and owner Gene Haas' frustration with the latest poor run of results, while outgoing boss Steiner lamented a lack of investment.
Although these developments cast doubt on the outfit's future, Komatsu says Gene Haas has reaffirmed his commitment and remains keen to invest in the outfit, with a new motorhome on the way, while the squad is also hiring new members.
"I got appointed officially on 10 January, right? Gene's message from day one was absolutely clear: he said he's got money, he is ready to invest it," the Japanese said. "But we've got to show him we can use the money responsibly, efficiently.
"He doesn't want to see the waste. There's a reason he's a billionaire, right? He doesn't like to waste money, right?
"So when I looked at it, then there's so many areas we can improve. So that's why I wasn't too worried about his initial message: 'Come on, you guys need to show me you are using my money responsibly, then get to a certain position, then I think about the investment'.
"But I know for a fact that he'll really invest when we get to that stage. And already he's commissioned a new motorhome for next year, which is not a small investment. So we are doing that.
Source: Autosport