X0306 4 2017-10-10 1 0001024657 WEST CORP WSTC 0001185541 BERGER NANCEE R WEST CORPORATION 11808 MIRACLE HILLS DRIVE OMAHA NE 68154 0 1 0 0 President and COO Common Stock 2017-10-10 4 D 0 117462 23.50 D 0 D Common Stock 2017-10-10 4 D 0 152898 23.50 D 0 I By Nancee R. Berger Legacy Trust Stock Option (Right to Buy) 25.52 2017-10-10 4 D 0 93750 D 2022-03-30 Common Stock 93750 0 D Stock Option (Right to Buy) 33.52 2017-10-10 4 D 0 31250 D 2022-03-30 Common Stock 31250 0 D Deferred Stock Units 2017-10-10 4 D 0 312677.9346 D Common Stock 312677.9346 0 D Performance-based Restricted Stock Units 2017-10-10 4 D 0 57810 D Common Stock 57810 0 D Restricted Stock Units 2017-10-10 4 D 0 141090.344 D Common Stock 141090.344 0 D Represents shares of common stock that were cancelled and converted into the right to receive $23.50 per share pursuant to the merger agreement among the Issuer, Mount Olympus Holdings, Inc. and Olympus Merger Sub, Inc., dated as of May 9, 2017 (the "Merger Agreement"). Pursuant to the Merger Agreement, this option was cancelled as of October 10, 2017 in exchange for no consideration. Pursuant to the Merger Agreement and subject to the terms of the Issuer's Nonqualified Deferred Compensation Plan, as of the effective date of the merger, each deferred stock unit was cancelled and converted into the notional right to receive an amount of cash, equal to the product of (i) the number of shares of the Issuer's common stock issuable upon conversion of such deferred stock unit multiplied by (ii) $23.50 per share. Pursuant to the Merger Agreement, and subject to the terms of the applicable award agreement, each performance-based restricted stock unit was converted into the right to receive $23.50 per unit, subject to certain vesting conditions. Pursuant to the Merger Agreement, as of the effective date of the Merger, each restricted stock unit was cancelled and converted into the right to receive an amount of cash, equal to the product of (i) the number of shares of the Issuer's common stock issuable upon conversion of such restricted stock unit multiplied by (ii) $23.50 per share. The right to receive the merger consideration with respect to 83,540 shares remains subject to certain vesting conditions. /s/ Nancee R. Berger (signed by Deneen Shadewald as Power of Attorney for Reporting Person) 2017-10-12