Iridium (IRDM) CFO has 1,459 shares withheld for RSU tax obligations

Rhea-AI Filing Summary

Iridium Communications Chief Financial Officer Vincent James O'Neill had 1,459 shares of common stock withheld by the company to cover tax obligations. The shares were valued at $51.78 each and relate to the vesting and settlement of restricted stock units. After this tax-withholding transaction, he directly holds 128,405 shares of Iridium common stock, so the disposition represents a small portion of his overall stake and is a routine, non-market transaction.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider O'Neill Vincent James

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	1,459	$51.78	$76K

Holdings After Transaction: Common Stock — 128,405 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 1,459 shares Withholding price per share: $51.78 per share Shares held after transaction: 128,405 shares +1 more

4 metrics

Shares withheld for taxes 1,459 shares Tax withholding on RSU vesting for CFO on 2026-06-01

Withholding price per share $51.78 per share Value used for tax-withholding shares on 2026-06-01

Shares held after transaction 128,405 shares CFO’s direct Iridium common stock holdings after withholding

Tax-withholding transactions 1 transaction, 1,459 shares Form 4 transaction summary for this filing

Key Terms

restricted stock units, tax withholding obligations, withholding of shares, Form 4

4 terms

restricted stock units financial

"in connection with the non-reportable vesting and settlement of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"to satisfy the reporting person's tax withholding obligations in connection with the"

withholding of shares financial

"The transaction reported represents the withholding of shares by the issuer"

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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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^*

O'Neill Vincent James

(Last) (First) (Middle)

C/O IRIDIUM COMMUNICATIONS INC.

1676 INTERNATIONAL DRIVE, SUITE 1100

(Street)

MCLEAN VIRGINIA 22102

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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

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

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

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	06/01/2026		F(1)		1,459	D	$51.78	128,405	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	06/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Iridium Communications (IRDM) report for its CFO?

Iridium reported that CFO Vincent James O'Neill had 1,459 common shares withheld to cover tax obligations. The shares were tied to vesting restricted stock units and were not sold in the open market, making this a routine administrative transaction.

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

No, the transaction was not an open-market sale. The 1,459 shares were withheld by Iridium to satisfy CFO Vincent James O'Neill’s tax obligations arising from restricted stock unit vesting, as noted in the footnote to the Form 4 filing.

How many Iridium (IRDM) shares were withheld for the CFO’s taxes and at what price?

A total of 1,459 Iridium Communications common shares were withheld at $51.78 per share. This withholding satisfied Vincent James O'Neill’s tax obligations related to the vesting and settlement of restricted stock units granted as part of his compensation.

How many Iridium (IRDM) shares does the CFO hold after the tax withholding?

Following the tax-withholding transaction, Iridium’s CFO Vincent James O'Neill directly holds 128,405 common shares. This post-transaction balance shows that the 1,459 shares withheld for taxes represent only a small fraction of his overall equity position.

What does the footnote in the Iridium (IRDM) Form 4 say about the CFO’s transaction?

The footnote explains that the reported transaction reflects shares withheld by Iridium to satisfy the CFO’s tax withholding obligations. It states the withholding was connected to the non-reportable vesting and settlement of restricted stock units granted to Vincent James O'Neill.