[Form 4] Iridium Communications Inc. Insider Trading Activity

Rhea-AI Filing Summary

Iridium Communications Inc. (IRDM) insider report: Timothy Kapalka, identified as an officer (CAO, Iridium Satellite LLC), reported a transaction dated 09/01/2025 in which 804 shares of Iridium common stock were disposed at a price of $24.89 per share under transaction code F(1). Following the transaction, Kapalka beneficially owned 38,933 shares as a direct owner. The filing explains these shares were withheld by the issuer to satisfy the reporting person’s tax withholding obligations related to the non-reportable vesting and settlement of restricted stock units. The Form 4 was signed by an attorney-in-fact on 09/02/2025.

Insights

Financial Analyst

TL;DR Routine tax-withholding share disposition; small relative change in insider holdings.

The reported disposal of 804 shares at $24.89 reflects a withholding action to cover tax obligations from RSU vesting rather than an open-market cash sale initiated by the insider. The post-transaction holding of 38,933 shares remains material for disclosure but the transaction size is limited and described as administrative. There is no earnings, debt, or operational information in this filing to affect fundamental valuation.

Corporate Governance Expert

TL;DR Administrative insider transaction consistent with routine equity compensation mechanics.

The filing documents a standard withholding to satisfy tax liabilities from RSU settlement, disclosed under Form 4 requirements. The use of an attorney-in-fact for signature is noted and the reporting relationship (officer, CAO of Iridium Satellite LLC) is properly identified. This disclosure meets Section 16 reporting norms and raises no governance red flags based on the content provided.

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
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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^*

Kapalka Timothy

(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)
	CAO IRIDIUM SATELLITE LLC

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)		804	D	$24.89	38,933	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 Timothy Kapalka report on Form 4 for IRDM?

He reported the disposition of 804 shares of Iridium common stock on 09/01/2025 at $24.89 per share.

Why were the 804 shares disposed according to the filing?

The filing states the shares were withheld by the issuer to satisfy tax withholding obligations related to vesting and settlement of restricted stock units.

How many Iridium shares does Kapalka beneficially own after the transaction?

He beneficially owned 38,933 shares following the reported transaction, held directly.

What relationship to Iridium does the reporting person have?

The form identifies Kapalka as an officer (CAO, Iridium Satellite LLC) and lists director/10% owner boxes as not checked.

Who signed the Form 4 and when?

The document was signed by Patrick McClain, Attorney-in-Fact on 09/02/2025.