Preliminary revenue figures are a critical indicator of a company's financial health and performance. Maris-Tech's announcement of $4M in revenue for FY23 is likely to be seen as a positive development by investors, which could lead to a short-term increase in stock price. The confidence in this analysis is high due to the direct correlation between revenue announcements and investor sentiment, though it is not at 100 because the full financial context and market conditions are not provided in the news snippet.