Last updated Aug 4, 2026
OSK (OSK) is a publicly traded company. This page tracks every superinvestor 13F holding, congressional stock trade, and Form 4 insider transaction in OSK. Across our datasets, 3 superinvestors hold OSK and 2 members of Congress have traded it.
Notable holders include Alex Roepers, Mairs & Power, and Ray Dalio. Active congressional traders include Michael McCaul and Lisa McClain.
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