Iridium Communications (IRDM) SDConflict minerals disclosure

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM SD

SPECIALIZED DISCLOSURE REPORT

Iridium Communications Inc.

(Exact name of registrant as specified in its charter)

Kathleen A. Morgan

(703) 287-7400

(Name and telephone number, including area code, of the person to contact in connection with this report)

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in this form applies:

Section 1 – Conflict Minerals Disclosure

Item 1.01 Conflict Minerals Disclosure and Report

Conflict Minerals Disclosure

This Form SD of Iridium Communications Inc. (the “Company”) is filed pursuant to Rule 13p-1 under the Securities Exchange Act of 1934 for the reporting period January 1 through December 31, 2021.

A copy of the Company’s Conflict Minerals Report is attached hereto as Exhibit 1.01 and is publicly available at the Company’s website: (https://www.iridium.com/idr-file/304185).

Item 1.02 Exhibit

As specified in Section 2 of this Form SD, the Company is hereby filing its Conflict Minerals Report as Exhibit 1.01 to this report.

Section 2 – Exhibits

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

EXHIBIT INDEX