By Aaron Allen, The Seattle Medium

In March 2023, Seattle natives Mary Wideman-Williams and her daughter, Marquinta Obomanu, launched SistahBoss—a leadership initiative designed to support and elevate Black women across personal and professional spaces. More than a program, it’s a response to the lack of spaces where Black women can lead confidently, build meaningful connections, and grow within a supportive community.

Wideman-Williams, a longtime city leader, saw firsthand the absence of Black women in leadership development spaces. Obomanu, whose background includes youth development and nonprofit work, shares that vision and brings a passion for cultivating leadership in others. Together, they set out to build a new model of leadership development that is grounded in representation, r

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