• Dec. 28, 2015: $36.41 million in subordinated parking revenue refunding bonds. The investment firm of Siebert Brandford Shank also took part in the issue.

• Nov. 25, 2016: $12.365 million in parking revenue refunding bonds. IFS was the sole underwriter on this issue.

Jones said she knew Walker was at IFS and was aware of his past criminal convictions, when the treasurer’s office hired the firm as one of three investment firms in 2014.

“No company is squeaky clean,” Jones said. “And Mr. Walker has paid his debt to society.”

Walker said his contact with St. Louis officials is infrequent and that he did not serve as the “point person” for IFS on the bond issues.

On his LinkedIn profile, Walker states that he was hired as vice president by IFS “to launch the public/corporate finance department within the firm.”

Jared Boyd, Jones’ chief of staff, said IFS and the other two underwriters were selected in 2014 after eight firms submitted their qualifications. He said the plan called for the firms to be used whenever the treasurer’s office needed to issue bonds.