Thutmosis IV was the son of Amenhotep II and grandson to the great Thutmosis III. He had a brief reign of 10 years and his greatest accomplishments were the restoration of the Great Sphinx of Giza and the subsequent commissioning of the Dream Stele. Thutmosis IV shares the same prenomen as his illustrious grandfather, who was particularly revered. The sharing of names was common for pharaohs looking to enhance their own image. Their cartouches differ with the addition of three dots at the base for Thutmose IV.
To find out more about Ancient Egyptian amulets please see our relevant blog post: Egyptian Amulets and their Meanings.