17 CFR § 229.503 - (Item 503) Prospectus summary.
(a) Prospectus summary. Provide a summary of the information in the prospectus where the length or complexity of the prospectus makes a summary useful. The summary should be brief. The summary should not contain, and is not required to contain, all of the detailed information in the prospectus. If you provide summary business or financial information, even if you do not caption it as a summary, you still must provide that information in plain English.
(b) Address and telephone number. Include, either on the cover page or in the summary section of the prospectus, the complete mailing address and telephone number of your principal executive offices.