Australia’s wealthiest individual, Gina Rinehart, has emerged as the financier behind Bruce McWilliam’s near-10% stake in Southern Cross Media, the owner of Network Seven, Triple M, and related assets.

McWilliam, a former Seven West Media executive, built the stake with a loan-backed purchase totaling roughly A$11–14 million in recent weeks.

The investment is largely funded by a vehicle linked to Rinehart and Hancock Prospecting, reinforcing Rinehart’s leveraged influence in the Perth-based media group.

Southern Cross Media is seeking two independent directors as part of governance changes following its recent merger and leadership shifts.

In the six months to December, Southern Cross reported revenue of about A$1.008 billion, marking a modest drop from the prior period.

Rinehart’s involvement positions her to influence Australia’s largest media group based in Perth, which also publishes The West Australian.

Rinehart’s return to significant media ownership occurs amid a concentrated Australian market dominated by News Corp and Sky News, with her prior stakes in Ten and Fairfax.

Rinehart’s political influence is noted in broader context, with funding and advocacy through Hancock Prospecting supporting various movements and campaigns.

This marks Rinehart’s first major media investment in over a decade, since her earlier stakes in Network Ten and Fairfax.

The merger of Southern Cross Media with Seven West Media has created a large group including the Seven Network, Triple M, Hit radio, and West Australian Newspapers, with Kerry Stokes remaining the largest shareholder at about 20%.

Post-merger structure places Stokes as the largest shareholder, while McWilliam’s stake sits as a significant, though minority, ownership position within the expanded group.

McWilliam says his purchases are value-driven, citing the merger context and Southern Cross’s national TV and radio strength, with market chatter suggesting possible future board materialization.