Three companies -- FirstMeridian Business Services Ltd, IRM Energy Ltd and Lohia Corp -- have received capital markets regulator SEBI's go-ahead to raise funds through initial public offerings (IPOs). These firms, which filed their preliminary IPO papers with the markets regulator between September 2022 and January 2023, obtained the observation letters during February 21-24, an update with the Securities and Exchange Board of India (SEBI) showed on Tuesday.