Executives of the besieged bank met Friday as shares finish 20% lower; possible sale said to be considered.

Citigroup executives met Friday at the company's headquarters in midtown Manhattan. Shares of the bank have lost nearly two thirds of their value since last week.

NEW YORK (CNNMoney.com) -- Shares of Citigroup suffered another steep decline Friday, falling 20%, despite effort by the company's top management to assure the firm's survival.

Both The Wall Street Journal and The New York Times reported late Thursday that board members were considering selling off pieces of the company, or the entire bank itself.

A Citigroup spokesperson would not comment on the reports but the company reiterated its commitment to its previously announced restructuring plan in a statement Friday.

"We are focused on executing our strategy, including our targeted expense and legacy asset reductions, and we believe the benefits will be seen over time," the company said.

Friday's selloff capped what has been a rough week for the New York City-based bank. The company announced Monday that it would be cutting more than 50,000 workers in an attempt to trim expenses.