Sec Form 5 Filing - Canfield Thomas C @ Iridium Communications Inc. - 2019-12-31

FORM 5 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Canfield Thomas C 2. Issuer Name and Ticker or Trading Symbol Iridium Communications Inc. [ IRDM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O IRIDIUM COMMUNICATIONS INC., 1750 TYSONS BOULEVARD, SUITE 1400 3. Date of Earliest Transaction (MM/DD/YY) 12/31/2019 (Street) MCLEAN, VA22102 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/15/2019 C 10,036 A 232,951 ( 2 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares 6.75% Series B Cumulative Perpetual Convertible Preferred ( 1 ) 05/15/2019 C 300 ( 3 ) ( 4 ) Common Stock 10,036 ( 5 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Canfield Thomas C C/O IRIDIUM COMMUNICATIONS INC. 1750 TYSONS BOULEVARD, SUITE 1400 MCLEAN, VA22102 X Signatures /s/ Brian Leaf, Attorney-in-Fact 01/31/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The 6.75% Series B Cumulative Perpetual Convertible Preferred Stock mandatorily converted into shares of Common Stock on May 15, 2019 at a conversion price of approximately $7.47 per share (equivalent to a conversion rate of 33.456 shares of Common Stock for each share of 6.75% Series B Cumulative Perpetual Convertible Preferred Stock). Upon the mandatory conversion of such Convertible Stock, accrued and unpaid dividends were paid in cash by the Issuer. ( 2 )On January 8, 2020, the Reporting Person filed a Form 4 to report the acquisition of restricted stock units. Including the shares reported on this Form 5, the number of shares of common stock beneficially owned following the transactions reported on the Form 4 filed on January 8, 2020 was 240,938.2. ( 3 )These shares were convertible at any time into shares of the Issuer's common stock at the conversion rate set forth in Footnote (1) to this Form 5. ( 4 )These securities had no expiration date. ( 5 )The Reporting Person converted the 6.75% Series B Cumulative Perpetual Convertible Preferred Stock into the shares reported as acquired in Table I of this Form 5.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.