Scott Scheimreif - 01 Dec 2025 Form 4 Insider Report for Iridium Communications Inc. (IRDM)

Role: EVP-GOVERNMENT PROGRAMS
Signature: /s/ Peter L. Trentman, Attorney-in-Fact
Issuer symbol: IRDM
Transactions as of: 01 Dec 2025
Net transactions value: -$29,033
Form type: 4
Filing time: 03 Dec 2025, 16:47:40 UTC
Previous filing: 02 Sep 2025
Next filing: 23 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Scheimreif Scott	EVP-GOVERNMENT PROGRAMS	C/O IRIDIUM COMMUNICATIONS INC., 1750 TYSONS BOULEVARD, SUITE 1400, MCLEAN	/s/ Peter L. Trentman, Attorney-in-Fact	03 Dec 2025	0001564963

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IRDM	Common Stock	Tax liability	$29,033	-1,766	-0.94%	$16.44	185,669	01 Dec 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.

Remarks:

Exhibit 24 - Power of Attorney