**Endorsement No. 4**

**Add. to Policy No.** [Not specified]
**Return Premium** [Not specified]

**Name of Insured:** INTERNATIONAL BUSINESS MACHINES CORP.

**IN CONSIDERATION OF THE PREMIUM PAID, IT IS HEREBY UNDERSTOOD AND AGREED THAT:**

**(A) THE POLICY PERIOD SHOULD SHOW**
**MAY 21, 1981 TO MAY 21, 1982**

**(B) ENDORSEMENT #1, NAMED INSURED, IS AMENDED BY ADDING THE FOLLOWING PARAGRAPH:**

IT IS ALSO AGREED THAT THE FOLLOWING JOINT VENTURES ARE INCLUDED AS NAMED INSURED BUT ONLY AS RESPECTS THE INTEREST OF INTERNATIONAL BUSINESS MACHINES CORP.

1. MARKET STREET ASSOCIATES OF ST. LOUIS
2. DISCOVISION ASSOCIATES
3. SATELLITE BUSINESS SYSTEMS
4. 425 MARKET STREET ASSOCIATES (SAN FRANCISCO)
5. 2345 GRAND AVENUE KANSAS CITY CONDOMINIUM

Nothing herein contained shall be held to vary, alter, waive or change any of the terms, limits or conditions of the Policy, except as hereinabove set forth.

This endorsement is effective **MAY 21, 1981**

Attached to and forming part of Policy No. 75-102049 of the

AIU INSURANCE COMPANY
AMERICAN INTERNATIONAL UNDERWRITERS

BB/EJ
MARCH 10, 1982

FOR THE COMPANY