A shareholder lawsuit alleging undisclosed political arrangements linked to President Donald Trump has opened a new front in the proposed US$111 billion Paramount–Warner Bros Discovery merger, shifting investor attention from antitrust approval to corporate governance and board accountability.

A single executive post can now carry the weight of formal disclosure, after a US court upheld liability in the Elon Musk Twitter lawsuit over market-moving tweets during the Twitter acquisition.

A US Supreme Court ruling has handed closed-end fund boards a major win, shutting down a legal tactic activist investors had started to use to challenge entrenched governance structures.

Legislative reforms to tackle the increased use of strategic litigation against public participation (SLAPP) cases against journalists and watchdogs have been proposed by the UK government.