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**Insured:** INTERNATIONAL BUSINESS MACHINES CORPORATION  
**Policy No.:** XLUMB-00704  
**Endorsement No.:** 10  
**Effective Date:** MAY 21, 1997

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**COVERAGE "A" EXTENSION AND INCORPORATION OF SCHEDULES BY REFERENCE ENDORSEMENT CONT'D.**

It is agreed that the only purposes of Schedules A, B and C are to set forth the following information as respects the corresponding indicated provisions of the Policy, and nothing contained in such Schedules shall affect application of any other provisions of the Policy:

| Schedule | Information | Policy Provision |
|----------|-------------|------------------|
| A        | additional insured entities | III.P (2) (b) |
| B        | underlying insurance | II.A (1) |
| C        | exceptions to Watercraft exclusion | IV.J |

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**X.L. INSURANCE COMPANY, LTD.**  
By: **LYLE MCCOY**  
Title: **VICE PRESIDENT**  
Date: **JUNE 30, 1997**  
Ref: **XS4-031.02**

XL