CSX CORPORATION CAPITAL BUILDER PLAN

Age/service weighted plan where allocations are based on age service or age and service; or new comparability or similar plan where allocations are based on participant classifications consisting entirely or predominantly of highly compensated employees or the plan provides an additional allocation rate on compensation above a specified threshold that exceeds the permitted disparity limits of Code section 401(l).

This plan or any part of it is intended to meet the conditions of 29 CFR 2550.404c-1 (shifting investment responsibility to participants).

Participants have the opportunity to direct the investment of all of the assets allocated to their individual accounts regardless of whether 29 CFR 2550.404c-1 is intended to be met.

Cash or deferred arrangement described in Code section 401(k) that is part of a qualified defined contribution plan under which employees may elect to defer part of their compensation or receive these amounts in cash.

Employee contributions are allocated to separate accounts under the plan or employer contributions are based in whole or in part on employee deferrals or contributions to the plan. Not applicable to 401(k) plans with only QNECs and/or QMACs or to 403(b)(1) 403(b)(7) or 408 arrangements.

Employee stock ownership plan that is not leveraged.

Total or partial participant-directed account plan where plan uses a default investment account for participants who fail to direct assets in their account.

Plan sponsor(s) is (are) a member(s) of a controlled group (Code sections 414(b) (c) or (m)).

Plan requiring that all or part of employer contributions be invested and held at least for a limited period in employer securities.

U.S.-based plan that covers residents of Puerto Rico and is qualified under both Code section 401 and section 1165 of the Internal Revenue Code of Puerto Rico.