The Reuters article is March 2016, the documents related to Osama bin Laden are not, they are much older, taken during the raid in which bin Laden was killed and merely recently declassified and released.

The company mentioned was no "Construction Company" it was an Al-Qaeda "holding company", a front used as a front for receiving contributions to the cause.

Wadi al Aqiq
Part of Al-Qaeda

Details

Center of Gravity
Sudan


Goal
Holding company

Leader
Osama bin Laden

Key members
Mamdouh Mahmud Salim, Wadih El Hage

Formed - 1991
 
 
Narrative and Notes

Osama bin Laden formed a holding company called Wadi al-Aqiq in the Khartoum, Sudan, to raise money for al-Qaeda purposes. It was the first al-Qaeda company formed in Sudan.
Osama served as chairman, and Salim as the general manager.
 
 
Sources
1: United States vs. bin Laden, Atef, El Hage, Fazul Mohammed, Odeh and Al-Owhali, indictment, Nov. 4, 1998.

2: Jamal al-Fadl testimony, United States vs. Osama bin Laden et al, trial transcript, Day 2, Feb. 6, 2001.

3: Essam al-Ridi testimony, United States vs. Osama bin Laden et al, trial transcript, Day 5, Feb. 14, 2001.

Osama bin Laden was never a businessman.
Osama bin Laden was never a statesman.
Osama bin Laden was never the Leader of any Nation.