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David Steinmann is the managing director at American Securities Management, based in New York financial circles with headquarters on Park Avenue, and president of the William Rosenwald Family Fund. He is the husband of Nina Rosenwald, a philanthropist and heir to the Rosenwald family fortune derived from Sears, Roebuck and Co. Together, they oversee conservative-leaning philanthropic initiatives through family foundations, channeling funds to pro-Israel organizations, counter-terrorism efforts, and groups opposing political Islam, such as the Middle East Forum, Gatestone Institute, and David Horowitz Freedom Center. This represents the Rosenwald family's shift from progressive to conservative philanthropy, funding think tanks and advocacy groups that shape discourse on national security and Middle East policy. Their giving has faced criticism from watchdog groups like the Southern Poverty Law Center, which has labeled some recipient organizations as hate groups for their views on Islam and immigration (reported in the 2010s). Steinmann maintains a low public profile, with limited details available on his early life, education, or personal background. No verified information exists on legal issues, health, or other personal matters.