Creates Leading Platform for Government-Sponsored Programs and One of the Largest Medicaid Managed Care Organizations in the Country Broadens Presence to Build Scale and Drive Diversification Transaction Expected to be Significantly Accretive to Centene's EPS in the First Year Following Close Estimated to Achieve up to Approximately $150 Million in Annual Synergies by the Second Year Following Close Companies to Host Conference Call at 8:30 AM ET