The United States will hold talks with Iraq in June on the future of its troop presence in the country.
The rockets targeted the site of Halliburton in the Burjesia area in the oil-rich Basra province, the statement said.
The coalition handed over some $3.5 million in materials, including tents, blast walls and gym and dining facility equipment.
U.S. Army Sgt. 1st Class John David Randolph Hilty died in a "non-combat-related incident."
Until last month, there were some 7,500 coalition troops based in Iraq, including 5,000 U.S. forces.
Staff Sgt. Marshal D. Roberts was one of two American servicemen killed on March 11 in a rocket attack at Camp Taji in Iraq.
The attack came as the U.S.-led coalition pulled out of a second base elsewhere in Iraq, in line with a planned drawdown.
Toxic waste was burned at the base in Iraq, which is the frequent target of rocket attacks.
Troops from the U.S.-led coalition pulled out from a base in western Iraq on Thursday as part of a planned drawdown.
The rockets hit the Basmaya base near the Iraqi capital on Monday evening.