Arlington Resources Inc., a provider of human resources and accounting/finance staffing, was acquired by Cornerstone Staffing Solutions, a Pleasanton, Calif.-based staffing supplier. The deal was announced by De Bellas & Co. Investment Banking.

Privately held Arlington Resources is based in Rolling Meadows, Ill., and was founded in 1997 by Patricia Casey. Terms of the transaction were not announced.

“Both of our firms, Arlington Resources and Cornerstone Staffing Solutions, exhibit strong core values, have stellar reputations for ‘doing the right thing’ for and with our customers and associates, and our core competencies match well,” Casey said in a statement.

She will join Cornerstone’s executive team as president of the Arlington Resources Division of Cornerstone.