Iridium Insider Withholds Shares to Cover RSU Taxes; 187,435 Shares Remain

Rhea-AI Filing Summary

Iridium Communications insider Scott Scheimreif reported a routine Form 4 disclosure showing a non-derivative disposition of 1,766 shares of Iridium common stock on 09/01/2025 at an average price of $24.89 per share. The filing states the shares were withheld by the issuer to satisfy the reporting person’s tax withholding obligations related to the vesting and settlement of restricted stock units, not an open-market sale. After the withholding, Scheimreif beneficially owns 187,435 shares, held directly. The filing was signed by an attorney-in-fact on 09/02/2025.

Insights

Corporate Governance Expert

TL;DR: Routine tax-withholding disposition tied to RSU settlement; not an active divestiture signal.

The Form 4 discloses a typical withholding of vested restricted stock units to satisfy tax obligations, which is a standard administrative action and not a discretionary sale by the officer. The remaining direct beneficial ownership of 187,435 shares preserves alignment with shareholders. No new compensation arrangements, grants, or unusual transfer mechanisms are described, and the filing identifies the reporting person as EVP-Government Programs, confirming insider status.

Securities Analyst

TL;DR: Small, non-market disposal; minimal impact on shareholder base or control.

The disposition of 1,766 shares at $24.89 reflects share withholding for taxes following RSU vesting. This reduces the reporting person's direct holdings modestly to 187,435 shares. Because the transaction was administrative and the quantity is small relative to typical institutional stakes, it is unlikely to affect market perceptions or materially alter insider ownership percentages.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Scheimreif Scott

(Last) (First) (Middle)

C/O IRIDIUM COMMUNICATIONS INC.

1750 TYSONS BOULEVARD, SUITE 1400

(Street)

MCLEAN VA 22102

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Iridium Communications Inc. [ IRDM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP-GOVERNMENT PROGRAMS

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/01/2025		F(1)		1,766	D	$24.89	187,435	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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.

	/s/ Patrick McClain, Attorney-in-Fact	09/02/2025
	** Signature of Reporting Person	Date
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.

FAQ

What did the Form 4 filed for IRDM on 09/02/2025 report?

It reported a disposition of 1,766 shares on 09/01/2025 at $24.89 per share, withheld to satisfy tax withholding from RSU vesting.

Who is the reporting person on this Form 4 for IRDM?

The reporting person is Scott Scheimreif, identified as EVP-Government Programs and an officer of Iridium Communications.

How many shares does the reporting person own after the transaction?

After the reported withholding, the reporting person beneficially owns 187,435 shares (direct ownership).

Was this transaction an open-market sale or part of a Rule 10b5-1 plan?

The filing explains the shares were withheld by the issuer to satisfy tax obligations from RSU settlement; it does not indicate an open-market sale or a 10b5-1 plan.

Who signed the Form 4 and when?

The form was signed by Patrick McClain, Attorney-in-Fact on 09/02/2025 on behalf of the reporting person.