Prince Karim Al-Husseini (Arabic: شاه كريم الحسيني, romanized: Shāh Karīm al-Ḥusaynī; 13 December 1936 – 4 February 2025), known as the Aga Khan IV was the 49th imam of Nizari Isma'ilis. He held the position of Imam and the title of Aga Khan from 1957 to 2025, after succeeding to the position at the age of 20 upon the death of his grandfather, Aga Khan III. Aga Khan IV was also known by the religious title Mawlānā Hazar Imam by his Isma'ili followers.
My condolences to his followers; i know there are, or atleast were, a few on this forum
Innaillahe Wainna Illahe Rajeuun