Iridium Communications Inc. — Director's Dealing 2025

Mar 4, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Iridium Communications Inc. (IRDM)
CIK: 0001418819
Period of Report: 2025-03-01

Reporting Person: DESCH MATTHEW J (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-03-01	Common Stock	F	18452	$31.56	Disposed	982695	Direct
2025-03-01	Common Stock	F	19714	$31.56	Disposed	962981	Direct
2025-03-01	Common Stock	A	46996	—	Acquired	1009977	Direct
2025-03-01	Common Stock	F	10071	$31.56	Disposed	999906	Direct
2025-03-01	Common Stock	A	110899	—	Acquired	1110805	Direct
2025-03-02	Common Stock	A	20004	—	Acquired	1130809	Direct
2025-03-02	Common Stock	F	9021	$31.56	Disposed	1121788	Direct

Footnotes

F1: 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.

F2: 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, 2024. 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, 2025.

F3: 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, 2,331 shares were previously withheld to pay taxes associated with the reporting person becoming eligible for accelerated vesting upon a qualified retirement under the issuer's "sum of 70" program. Of the remaining 44,665 shares, one-half vested on March 1, 2025 and the remainder will vest on March 1, 2026, subject to the reporting person's continuous service with the issuer as of the vesting date.

F4: 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.

F5: 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, 34% shall vest on March 1, 2026 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, 2028, subject to the reporting person's continuous service with the issuer as of each such vesting date.

F6: Represents the vested portion of a performance-based restricted stock unit award based on the issuer's satisfaction of certain performance criteria. In light of the performance-based vesting conditions of the award, such award was not reportable under Section 16 until vesting was determined, which occurred on March 2, 2025.

F7: 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 (6) herein.