Scott Scheimreif - 19 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: 19 Dec 2025
Net transactions value: -$17,585
Form type: 4
Filing time: 23 Dec 2025, 16:46:13 UTC
Previous filing: 03 Dec 2025
Next filing: 02 Mar 2026
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	23 Dec 2025	0001564963

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IRDM	Common Stock	Tax liability	$17,585	-1,032	-0.56%	$17.04	184,637	19 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 reported transaction involved the withholding of shares of stock 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 with respect to certain restricted stock unit awards held by the reporting person.