Former Vangent CEO named new chief of SI Organization

Mac Curtis returns to operations role

The SI Organization has named Mac Curtis president and CEO, effective July 1. He succeeds Bill Graham, who has served in these roles since 2003.

Graham will serve as vice chairman going forward, the company said.

“As the SI begins its next chapter of growth, I felt it was a good time to step back, and I am excited about the depth of relevant expertise that Mac brings to the SI,” Graham said.

Curtis was formerly president and CEO of Vangent Inc., which was acquired by General Dynamics in 2011.

Since then, he has been an operating executive at Veritas Capital. He has also served as senior vice president of the Information and Enterprise Technology Group at DynCorp.

He holds a bachelor’s degree in civil engineering from the Virginia Military Institute.

He was previously chairman of the Professional Services Council, and was a 2011 Fed 100 award winner.

About the Author

Mark Hoover is a senior staff writer with Washington Technology. You can contact him at, or connect with him on Twitter at @mhooverWT.

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