Grande shared a black and white snap of the 26-year-old rapper. The former Nickelodeon star - who didn’t caption the photo - disabled comments on her Instagram after some fans blamed her for his tragic passing.
The couple split after two years of dating in early May.
"This is one of my best friends in the whole world and favorite people on the planet, Malcolm McCormick," the 25-year-old singer said at the time of the split. "I respect and adore him endlessly and am grateful to have him in my life in any form, at all times regardless of how our relationship changes or what the universe holds for each of us."