# EDGAR Filing Document

**Accession Number:** 0001418819
**File Stem:** 0001209191-23-015455
**Filing Date:** 2023-3
**Character Count:** 8673
**Document Hash:** f8d89c6706f7a251dd567554af4fba39
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001209191-23-015455.hdr.sgml**: 20230303

**ACCESSION NUMBER**: 0001209191-23-015455

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20230301

**FILED AS OF DATE**: 20230303

**DATE AS OF CHANGE**: 20230303

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** McBride Suzanne E.
- **CENTRAL INDEX KEY:** 0001767205

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-33963
- **FILM NUMBER:** 23704155

**MAIL ADDRESS:**
- **STREET 1:** C/O IRIDIUM COMMUNICATIONS INC.
- **STREET 2:** 1750 TYSONS BOULEVARD, SUITE 1400
- **CITY:** MCLEAN
- **STATE:** VA
- **ZIP:** 22102
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Iridium Communications Inc.
- **CENTRAL INDEX KEY:** 0001418819
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMMUNICATIONS EQUIPMENT, NEC [3669]
- **IRS NUMBER:** 221344998
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 1750 TYSONS BOULEVARD
- **STREET 2:** SUITE 1400
- **CITY:** MCLEAN
- **STATE:** VA
- **ZIP:** 22102
- **BUSINESS PHONE:** 301-571-6200

**MAIL ADDRESS:**
- **STREET 1:** 1750 TYSONS BOULEVARD
- **STREET 2:** SUITE 1400
- **CITY:** MCLEAN
- **STATE:** VA
- **ZIP:** 22102

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GHL Acquisition Corp.
- **DATE OF NAME CHANGE:** 20071119

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>McBride Suzanne E.<br><sub>(Last) (First) (Middle)</sub><br>C/O IRIDIUM COMMUNICATIONS INC.<br>1750 TYSONS BOULEVARD, SUITE 1400<br><sub>(Street)</sub><br>MCLEAN, VA 22102<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2023-03-01 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Operations Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Iridium Communications Inc. [ IRDM ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2023-03-01 |  | F<sup>(1)</sup> |  | 5220 | D | $61.59 | 102017 | D |  |
| Common Stock | 2023-03-01 |  | F<sup>(2)</sup> |  | 3735 | D | $61.59 | 98282 | D |  |
| Common Stock | 2023-03-01 |  | A |  | 31317<sup>(3)</sup> | A | $0.00 | 129599 | D |  |
| Common Stock | 2023-03-01 |  | F<sup>(4)</sup> |  | 6959 | D | $61.59 | 122640 | D |  |
| Common Stock | 2023-03-01 |  | A |  | 20295<sup>(5)</sup> | A | $0.00 | 142935 | D |  |
| Common Stock | 2023-03-01 |  | G |  | 3175 | D | $0.00 | 139760 | D |  |
| Common Stock | 2023-03-02 |  | S |  | 4669 | D | 60.65<sup>(6)</sup> | 135091 | D |  |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

---

### Footnotes:

(1) The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the non-reportable vesting and settlement of restricted stock units.

(2) The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the non-reportable vesting and settlement of a restricted stock unit award that previously vested with respect to one-half of the shares underlying the award on March 1, 2022. The amount being reported herein represents amounts withheld to satisfy tax withholding obligations in connection with the vesting and settlement of the remaining one-half on March 1, 2023.

(3) These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the issuer. Of the shares underlying this restricted stock unit award, one-half vested on March 1, 2023 and the remainder will vest on March 1, 2024, subject to the reporting person's continuous service with the issuer as of the vesting date.

(4) The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations in connection with the vesting and settlement of the restricted stock unit award reported in footnote (3) herein.

(5) These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the issuer. Of the shares underlying this restricted stock unit award, 25% shall vest on March 1, 2024 and the remainder shall vest in equal quarterly installments thereafter on each June 1, September 1, December 1 and March 1, so that all shares of common stock shall be vested as of March 1, 2027, subject to the reporting person's continuous service with the issuer as of each such vesting date.

(6) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.39 to $60.93, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this form Form 4.

**Signature:** /s/Brian Leaf, Attorney-in-Fact  
**Date:** 2023-03-03

### Remarks:

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.**