TV - CBS Television Distribution, CBS Paramount Network Television/CBS Television Studios, CBS Corporation (2005 – present)
Viacom had purchased the CBS Corporation in 2000. They split in 2005. The old Viacom then became the CBS Corporation. Its holding Paramount Television became CBS Paramount Network Television. CBS Television Distribution formed soon after and took over distribution of past Star Trek shows. In 2009, CBS Paramount Network Television became CBS Television Studios; CBS Television Studios has production rights for new Trek series, though it has not (yet) produced any under that name.
Movies, DVDs - Paramount Pictures, Viacom (new) (2005 – present)
In the 2005 Viacom/CBS split, the old Viacom became the CBS Corporation and a new Viacom was created. This new company owns Paramount Pictures which owns the Trek films. Paramount Pictures produced Star Trek and Star Trek Into Darkness under license from CBS Television Studios. Paramount continues to also distribute DVDs of the TV series on behalf of CBS.
That's what I get for listening to too much Para Möbius Maneuvering and not reading my own links.

I stand corrected.