The Koch Network, often referred to as Stand Together, is an influential conservative and libertarian philanthropic and political donor network in the United States, primarily led by Charles Koch and the late David Koch. Established in 2003, it functions as a 501(c)(3) nonprofit organization that coordinates a vast ecosystem of think tanks, foundations, grassroots movements, academic programs, advocacy groups, and legal entities. The network was built with hundreds of millions of dollars from the Koch brothers' personal wealth, derived from their ownership of Koch Industries, one of the largest privately held conglomerates in the U.S., spanning industries like chemicals, energy, and manufacturing. Its core mission is to promote libertarian principles, including minimal government intervention, free-market economics, and opposition to regulatory policies, particularly those affecting business interests. By organizing like-minded wealthy donors—estimated at around 500—the network has reshaped public opinion and policy debates, with significant focus on electing libertarian-leaning Republicans and influencing issues like climate change regulations and tax policies. The network gained widespread media attention starting in 2008, when the brothers' contributions to 34 political and policy organizations became public, including founding and directing several key groups like Americans for Prosperity and the Cato Institute. It operates through regular gatherings of conservative donors who channel funds to coordinated political organizations, exerting stealth influence on state and national levels. The network has been criticized for its role in funding opposition to environmental regulations and climate science, as well as for its 'dark money' contributions to super PACs and advocacy efforts that have impacted elections and policy outcomes. Despite its libertarian roots—dating back to David Koch's 1980 vice-presidential run on the Libertarian Party ticket—the network has aligned closely with Republican causes, spending billions to build an integrated infrastructure for conservative influence. In May 2019, following David Koch's death, Charles Koch announced a major restructuring of the philanthropic efforts, rebranding under Stand Together to broaden focus on social issues like criminal justice reform and economic opportunity, while maintaining its core political advocacy. The network continues to operate with significant financial power, commanding resources from Koch Industries' over $50 billion valuation per brother, and remains a pivotal force in American conservative politics, often described as the most powerful right-wing group due to its coordinated, multi-faceted approach.