# ENDORSEMENT # 4
EFFECTIVE: 5/21/79

## PROFESSIONAL LIABILITY EXCLUSION

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 M848983 OF THE MISSION INSURANCE COMPANY
ISSUED TO: INTERNATIONAL BUSINESS MACHINES CORP., ETAL (AS PER END'T #1)
DATED AT: NEW YORK, NEW YORK
DATE: JUNE 19TH, 1979
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SAYRE & TOSO, INC.
BY: Robert J Mannow