Following completion of the transaction, the acquired entity will continue to operate from their existing locations, under the supervision of John Handmaker and George Vredeveld Jr.
CertusBank co-CEO Walter Davis said, "It positions us perfectly to expand our small to mid-size business platform in the southeast, especially in our headquartered state of South Carolina.
Headquartered in Greenville, CertusBank operates as a subsidiary of CertusHoldings, and has $1.8bn in assets manages 33 branches in the Carolinas, Florida, and Georgia.
Founded in 2001, Quadrant Financial initially started its operations as a mortgage brokerage and mortgage banking firm, and in 2006 it became a subsidiary of First Chatham Bank.
It has originated in more than $750m in loans to assist small businesses across the US.