Iridium Communications Inc. — Director's Dealing 2026

Mar 3, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Iridium Communications Inc. (IRDM)
CIK: 0001418819
Period of Report: 2026-02-26

Reporting Person: DESCH MATTHEW J (Director, CHIEF EXECUTIVE OFFICER)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-26	Common Stock	A	19396	—	Acquired	1134480	Direct
2026-02-26	Common Stock	A	95893	—	Acquired	1230373	Direct
2026-03-01	Common Stock	A	292275	—	Acquired	1522648	Direct
2026-03-01	Common Stock	F	53301	$22.49	Disposed	1469347	Direct

Footnotes

F1: Reflects the number of restricted stock units ("RSUs") certified as earned with respect to an award under the issuer's 2025 bonus plan granted on March 1, 2025. Each RSU represents a contingent right to receive one share of common stock of the issuer. The shares will vest on March 9, 2026, subject to the reporting person's continuous service with the issuer as of the vesting date.

F2: Reflects the number of shares certified as earned with respect to an award of performance-based RSUs ("PSUs") granted on March 1, 2024. One half of the PSUs settled on March 1, 2026 and the remaining PSUs will vest and be settled on March 1, 2027.

F3: These shares are represented by RSUs. Each RSU represents a contingent right to receive one share of common stock of the issuer. Of the shares underlying this RSU award, 20% shall vest on March 1, 2027 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, 2031, subject to the reporting person's continuous service with the issuer as of each such vesting date.

F4: The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations.