Exhibit 10.4 AMENDED AND RESTATED IPO ALLOCATION AGREEMENT THIS AMENDED AND RESTATED IPO ALLOCATION AGREEMENT (this "Agreement") is entered into as of December 22, 2003 by and among Egenera, Inc., a Delaware corporation (the "Company"), Crosslink...Ipo Allocation Agreement • June 24th, 2004 • Egenera, Inc. • Massachusetts
