On May 18, 2015, Justworks, Inc. closed the transaction. The company issued 9,142,892 series B preferred shares at a price of $1.421869 per share for gross proceeds of $12,999,9994.71. The preferred shares will be convertible in common shares at a price of $1.421869 per share.

The round was raised at post money valuation of $47,572,392.504112. The transaction was led by new investor Bain Capital Ventures and included participation from 9 other investors, including existing investors Thrive Capital and Index Ventures. As part of the transaction, Matt Harris, Partner at Bain Capital Ventures joined the company's board of directors.