On Sunday, authorities found four bodies in Lake Thingvallavatn, near the capital city of Reykjavik.
Neuman was known for his daredevil videos, including skydiving from a plane and racing down mountains on his longboard.
“In his quest for adventure, thirst for creativity and passion for a personal reflection, he truly impacted all those he touched.”
It added: “As the world sheds a tear, we should know that he passed doing what he loved, having just experienced the Northern Lights in Iceland for the first time commenting, ‘This is the happiest day of my life.'”
Authorities said the mission to recover the bodies had to be abandoned on Sunday due to dangerous weather but would continue once conditions improved.
The 22-year-old had been in Iceland to shoot commercial content alongside Belgian fashion brand Suspicious Antwerp, which released a statement on its official website.
“We are enormously distressed by the news and our thoughts and prayers are with the families and friends.
“We are in close contact with them, as well as with the authorities, and we’re doing everything we can to assist them during these difficult times.”
CNN’s Arnaud Siad contributed to reporting.