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Oracle

said Friday that two longtime directors, both octogenarians, have resigned from the board.

George Conrades, former CEO of content network distribution company Akamai

, is leaving, along with Naomi Seligman, a senior partner at technology research firm Ostriker von Simson, Oracle said in a filing. Conrades, 86, has been on the board for 18 years. Seligman, 87, joined the board in 2005.