Wa'il Adil Hasan Salman al-Fayad was died in a attack that took place on September 7 near Raga, the Syrian city which is known as the capital of IS group. The information was revealed by Pentagon spokesman Peter Cook.
"Wa'il oversaw ISIL's production of terrorist propaganda videos showing torture and executions," Cook said.
US officials "will continue to work with our coalition partners to build momentum" in the campaign to deal the IS group "a lasting defeat," he added.
The Islamic Group is considered as ISIL and Daesh.
The declaration comes as air strikes and conflicts are trying a delicate truce in Syria.
Under the arrangement, Moscow must weight Syrian President Bashar al-Assad and Washington must work with Syrian agitators to quiet their weapons.
In the event that the détente, which started on Monday, endures seven days and philanthropic access is without a doubt, Russia and the United States are to cooperate to target jihadists, including the IS gathering and previous Al-Qaeda partner Fateh al-Sham Front.
Russia said that albeit just Moscow and the Syrian administration were satisfying the ceasefire bargain, it was prepared to broaden the understanding by 72 hours.
The Pentagon likewise said that it had sent many US Special Operations Forces to Syria's outskirt with Turkey to battle the IS gathering at Ankara's solicitation in backing of the Turkish military and "considered" Syrian revolutionaries.