Iridium (IRDM) CEO Desch reports 8,747-share tax withholding, holds 1.46M

Rhea-AI Filing Summary

Iridium Communications Inc. Chief Executive Officer Matthew J. Desch reported a routine tax-related share disposition. On the transaction date, the issuer withheld 8,747 shares of Common Stock at $24.01 per share to satisfy his tax withholding obligations tied to the vesting and settlement of restricted stock units, rather than an open-market sale. After this withholding, Desch directly holds 1,460,600 shares of Common Stock, indicating he retains a substantial equity position in the company.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider DESCH MATTHEW J

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	8,747	$24.01	$210K

Holdings After Transaction: Common Stock — 1,460,600 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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^*

DESCH MATTHEW J

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/09/2026

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	03/09/2026		F(1)		8,747	D	$24.01	1,460,600	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/ Peter L. Trentman, Attorney-in-Fact	03/11/2026
	** 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 insider transaction did Iridium (IRDM) report for CEO Matthew Desch?

Iridium reported that CEO Matthew J. Desch had 8,747 shares of Common Stock withheld by the company to cover tax obligations. This relates to the vesting and settlement of restricted stock units, not an open-market sale of shares by the CEO.

Was the Iridium (IRDM) CEO’s Form 4 transaction an open-market sale?

No, the transaction was not an open-market sale. The shares were withheld by Iridium to satisfy Matthew Desch’s tax withholding obligations from restricted stock unit vesting, a common administrative step in equity compensation, rather than a discretionary sale into the market.

How many Iridium (IRDM) shares were involved in the CEO’s tax withholding?

The transaction involved 8,747 shares of Iridium Common Stock at $24.01 per share. These shares were retained by the company to pay Matthew Desch’s tax liabilities arising from restricted stock units that vested and settled on the same general timeframe.

How many Iridium (IRDM) shares does the CEO hold after this Form 4 transaction?

Following the tax-withholding transaction, CEO Matthew Desch directly holds 1,460,600 shares of Iridium Common Stock. This figure reflects his remaining ownership after the company withheld 8,747 shares to cover tax obligations associated with restricted stock unit vesting.

What does transaction code "F" mean in the Iridium (IRDM) CEO Form 4?

Transaction code “F” indicates a payment of exercise price or tax liability using securities. In this case, Iridium withheld 8,747 shares from Matthew Desch’s equity award vesting to satisfy his tax withholding obligations, rather than executing a voluntary market trade.