Koal and Oakk were listed as subcontractors on at least three of those contracts. Oakk was listed on one contract that had an initial award of up to $3 million — but the deal ultimately paid out $12 million between 2009 and 2015, records show. Koal was part of an initial $750,000 deal that paid out more than $1 million between 2006 and 2014, according to city records.