Paramounts dual-class stock structure is at the heart of Gabellis concerns.

Shari Redstones NAI holds almost 80% of the companys Class A, or voting, shares.

Gabelli Funds also owns nearly 4.9 million Class-A voting shares in Paramount.

Mario Gabell

Mario Gabell, CEO of Gamco Investors and a longtime investor in ParamountJohn Lamparski/Getty Images

The dealmakers needed to disclose price paid to NAI for non voting….and voting shares, Gabelli tweeted.

Paramount and National Amusements did not immediately respond to Deadlines request for comment.

Paramount and Skydance Media