(CNN) Less than two months into the job, Lisa Borders has resigned as the president and CEO of Time's Up.

The announcement came late Monday, first in a tweet by Borders.

"As Time's Up continues to grow, I am proud of the work I have done to shepherd its continued development. Unfortunately, it is with deep regret that I must resign from Time's Up to address family concerns that require my singular focus. I appreciate the opportunity to support this mission and I hope my efforts will continue to resonate."

Statement from Lisa Borders and TIME'S UP pic.twitter.com/d7YXIKwH9r — Lisa Borders (@Lisa_M_Borders) February 18, 2019

Time's Up followed up Borders' tweet with a statement of its own: "With gratitude for her work, TIME'S UP accepts and supports Lisa Borders' decision to resign as president and CEO. We know that it is the right decision for Lisa as well as the organization. Our COO, Rebecca Goldman, will serve as interim CEO while we conduct an executive search. We remain steadfast in our mission to create safe, fair, and dignified work for women of all kinds."

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