Iridium exec has 3,623 shares withheld for taxes

Iridium Communications’ COO had shares withheld for taxes upon RSU vesting, leaving her with 260,991 directly held shares.

Rhea-AI Filing Summary

Iridium Communications Inc. (IRDM) reports that Chief Operations Officer and director Suzanne E. McBride had 3,623 shares of common stock withheld on September 1, 2026, to satisfy tax withholding obligations related to the vesting and settlement of restricted stock units. The shares were withheld by the issuer and treated as a disposition, and McBride now directly holds 260,991 common shares. No Rule 10b5-1 trading plan is reported in connection with this tax-related transaction.

Insider Trade Summary

Tax Withholding: 3,623 shares

Tax Withholding 1 txn

Insider McBride Suzanne E.

Role Chief Operations Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	3,623	$46.98	$170K

Holdings After Transaction: Common Stock — 260,991 shares (Direct)

Footnotes (1)

1. F1. 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.

Key Figures

Shares withheld for taxes: 3,623 shares Reported price per share: $46.98 per share Shares held after transaction: 260,991 shares +1 more

4 metrics

Shares withheld for taxes 3,623 shares Common stock withheld on September 1, 2026 for tax withholding obligations on RSU vesting

Reported price per share $46.98 per share Value used for the 3,623 IRDM common shares withheld on September 1, 2026

Shares held after transaction 260,991 shares Directly held Iridium Communications Inc. common stock by Suzanne E. McBride after the transaction

Tax-withholding disposition shares 3,623 shares Shares delivered or withheld to satisfy tax withholding obligations, transaction code F

Key Terms

restricted stock units, withholding of shares, tax withholding obligations, non-derivative

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.

withholding of shares financial

"represents the withholding of shares by the issuer to satisfy"

tax withholding obligations financial

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

non-derivative financial

"transaction_type is listed as non-derivative common stock"

FAQ

What insider transaction did IRDM report for Suzanne E. McBride on September 1, 2026?

The report shows 3,623 IRDM common shares were withheld by Iridium Communications Inc. on September 1, 2026 to satisfy Suzanne E. McBride’s tax withholding obligations related to the vesting and settlement of restricted stock units.

How many Iridium Communications Inc. (IRDM) shares does Suzanne E. McBride hold after this Form 4 transaction?

After the September 1, 2026 tax-withholding transaction, Suzanne E. McBride directly holds 260,991 shares of Iridium Communications Inc. common stock, as reported in the Form 4 filing.

Was the September 1, 2026 IRDM insider transaction a market sale or a tax withholding?

It was a tax-withholding transaction. The Form 4 states the 3,623 shares represent shares withheld by Iridium Communications Inc. to satisfy the reporting person’s tax withholding obligations upon RSU vesting, not an open-market sale.

What price per share is associated with Suzanne E. McBride’s IRDM tax-withholding transaction?

The filing reports a price of $46.98 per share for the 3,623 common shares withheld on September 1, 2026, in connection with Suzanne E. McBride’s tax withholding obligations for RSU vesting.

Was the September 1, 2026 IRDM insider transaction made under a Rule 10b5-1 trading plan?

No. The Form 4 indicates no Rule 10b5-1 plan is reported for the September 1, 2026 tax-withholding transaction involving 3,623 Iridium Communications Inc. common shares.

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Available on EDGAR 09/02/2026 - 05:12 PM Accepted by SEC EDGAR 09/02/2026 - 05:12 PM Learn about SEC filing dates

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^*

McBride Suzanne E.

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

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	09/01/2026		F(1)		3,623	D	$46.98	260,991	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	09/02/2026
	** 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)