SurePayroll closed its series B round in January 2001 and a decade after launch sells to peer Paychex.

Paychex, a US provider of employee remuneration information, has acquired peer SurePayroll for a reported $155m, nearly a decade after the target’s largest venture round of $8m.

SurePayroll closed its series B round in January 2001 from financial peer Mesirow Financial and the since-defunct private equity firms Kettle Partners and BlueStar Ventures.