# Northbrook Insurance Company
Northbrook, Illinois

## Endorsement

**Named Insured:** International Business Machines Corporation  
**Policy No.:** 63 004 593  
**Endorsement No.:** 3

The Insured first named in Item I of the declarations shall be primarily responsible for payment of all premiums and shall act on behalf of all other insureds with respect to the giving and receipt of notice of cancellation and the receipt of any return premium that may become payable under this policy.

This endorsement to take effect on the 21st day of May 1978. All other terms and conditions remain unchanged.

Countersigned: May 30, 1978  
Authorized Representative: Richard [Signature]