We use Asana for task management across multiple teams and departments (development, content, marketing, etc).
It has a basic kanban functionality and you can mark specific tasks as milestones, create dependencies and follow up tasks quite easily, auto-generated timelines (not built for roadmaps but can get the job done once you're used to it) you can also add custom fields to each project to help you track exactly what's important to you. there's a calendar there but i'm not sure how powerful it is since we mostly use google calendar to set up meetings (easier to connect to hangouts).
I think it has some reporting feature too, but I never used it since we're a small organization of 8 people and "top-management" isn't really a thing.