# Professional Liability Exclusion

**Endorsement #4**

**Effective:** 5/21/78

**It is agreed that such insurance as is afforded by the policy shall not apply to any error or omission, malpractice or mistake of a professional nature committed or alleged to have been committed by or on behalf of the assured in the conduct of any of the assured's business activities.**

**All other terms and conditions remain unchanged.**

This endorsement is attached to and made a part of M843086 of the Mission Insurance Company.

Issued to: **International Business Machines Corporation, et al (as per endorsement #1)**

Dated at: **New York, New York**

Date: **June 15, 1978**

**By:** Sayre & Toso, Inc.