Al Muhaidib founded HDB Group in 2017, focusing on hotels, while HDB for Development and Real Estate Investment, established in 2020, operates across real estate and contracting. The group’s real estate portfolio is valued at around $3.5 billion. The group’s flagship projects include the 305-meter Tuwaiq Tower and HDB Tower, alongside large-scale residential and mixed-use developments across Riyadh. Al Muhaidib previously chaired Al Nassr Football Club. His net worth is estimated at $2.1 billion, as of March 2026.