Ladner attended St. Stanislaus College in Bay St. Louis.[1] He is the manager of a family-owned business.[2] He trains race horses and buys and sells cattle.[3]
A Republican, Ladner ran for election in 2023 for the Mississippi State Senate to represent the 46th district. He ran against incumbent Phillip Moran in the Republican primary. In a political upset, he won 54% to 46% and ran uncontested in the general election; Moran was the only senator incumbent to lose in the 2023 elections.[2][4] In the months leading up to the election, Moran was embroiled in controversy for concealing assets to avoid liability in a lawsuit related to a sexual assault case against his son.[5]
In the senate, he is a member of the following committees: Wildlife, Fisheries and Parks, Agriculture, Finance, Gaming, Municipalities, Ports and Marine Resources, Public Property, and Tourism.[1]
He is a member of the Harrison County Republican Club and Hancock County Republican Women's Club.[1]
He is married and has four children. He is of Catholic faith.[1] He resides in Pass Christian, Mississippi.[3]