Iridium (IRDM) COO receives new stock awards, shares withheld for taxes

Rhea-AI Filing Summary

Iridium Communications director and chief operations officer Suzanne E. McBride reported multiple equity awards and a related tax-withholding transaction in common stock. On March 1, 2026, she acquired 133,611 shares through a grant and had 20,479 shares withheld at $22.49 per share to cover tax obligations. Additional grants of 7,329 and 34,247 shares on February 26, 2026 reflect restricted stock unit and performance-based RSU awards. Footnotes state these awards generally settle one share per unit and vest between March 2026 and March 2031, subject to her continued service with the company.

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

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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^*

McBride Suzanne E.

(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 OPERATIONS OFFICER

3. Date of Earliest Transaction (Month/Day/Year)
02/26/2026

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	02/26/2026		A		7,329(1)	A	$0	226,781	D
Common Stock	02/26/2026		A		34,247(2)	A	$0	261,028	D
Common Stock	03/01/2026		A		133,611(3)	A	$0	394,639	D
Common Stock	03/01/2026		F(4)		20,479	D	$22.49	374,160	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. Reflects the number of restricted stock units ("RSUs") certified as earned with respect to an award under the issuer's 2025 bonus plan granted on March 1, 2025. Each RSU represents a contingent right to receive one share of common stock of the issuer. The shares will vest on March 9, 2026, subject to the reporting person's continuous service with the issuer as of the vesting date.

2. Reflects the number of shares certified as earned with respect to an award of performance-based RSUs ("PSUs") granted on March 1, 2024. One half of the PSUs settled on March 1, 2026 and the remaining PSUs will vest and be settled on March 1, 2027.

3. These shares are represented by RSUs. Each RSU represents a contingent right to receive one share of common stock of the issuer. Of the shares underlying this RSU award, 20% shall vest on March 1, 2027 and the remainder shall vest in equal quarterly installments thereafter on each June 1, September 1, December 1 and March 1, so that all shares of common stock shall be vested as of March 1, 2031, subject to the reporting person's continuous service with the issuer as of each such vesting date.

4. The transaction reported represents the withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations.

	/s/ Peter L. Trentman, Attorney-in-Fact	03/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What did Iridium (IRDM) COO Suzanne McBride report in this Form 4?

Suzanne McBride reported new stock-based awards and a related tax-withholding transaction. She received several common stock grants and had shares withheld by Iridium to satisfy tax obligations tied to those equity awards, all as part of her compensation.

How many Iridium (IRDM) shares were granted to Suzanne McBride?

The filing shows multiple common stock grants, including 133,611, 34,247 and 7,329 shares. These amounts reflect restricted stock units and performance-based RSUs that each represent a right to receive one Iridium common share upon vesting and settlement.

What was the purpose of the 20,479 Iridium (IRDM) shares disposed of?

The 20,479 shares were withheld by Iridium to cover Suzanne McBride’s tax withholding obligations. This tax-withholding disposition, priced at $22.49 per share, is a non-open-market transaction commonly used to satisfy taxes triggered by vesting equity awards.

Over what period do Suzanne McBride’s Iridium (IRDM) RSUs vest?

Some RSUs vest on March 9, 2026, while performance-based RSUs settle in two tranches on March 1, 2026 and March 1, 2027. Another RSU award vests 20% on March 1, 2027, with the remainder vesting quarterly through March 1, 2031.

Are Suzanne McBride’s Iridium (IRDM) stock awards subject to conditions?

Yes. The awards are contingent RSUs and performance-based RSUs, each convertible into one share of common stock. Vesting and settlement are generally conditioned on Suzanne McBride’s continuous service with Iridium through specified vesting dates, extending as far as March 1, 2031.

How did these transactions affect Suzanne McBride’s Iridium (IRDM) share holdings?

After the March 1, 2026 award, her reported direct holdings rose to 394,639 shares before tax withholding, then to 374,160 shares following the 20,479-share tax-withholding disposition. Earlier February 26, 2026 grants likewise increased her reported direct ownership levels on those dates.