Iridium Communications CAO granted 4,175 RSUs

Iridium Communications Inc. reported that Timothy Kapalka, who serves as CAO Iridium Satellite LLC, received a grant of 4,175 restricted stock units on June 1, 2026, each RSU for one common share.

Rhea-AI Filing Summary

Iridium Communications Inc. reported that Timothy Kapalka, who serves as CAO Iridium Satellite LLC, received a grant of 4,175 restricted stock units on June 1, 2026, each RSU for one common share. On the same date, 692 shares were withheld by the issuer to cover his tax withholding obligations related to RSU vesting. Thirty-four percent of this RSU award is scheduled to vest on June 1, 2027, with the remainder vesting in equal quarterly installments through June 1, 2029, subject to his continuous service. Following these transactions, he directly holds 49,204 common shares.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Kapalka Timothy

Role CAO Iridium Satellite LLC

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	692	$51.78	$36K
Grant/Award	Common Stock	4,175	$0.00	$0.00

Holdings After Transaction: Common Stock — 49,204 shares (Direct)

Footnotes (2)

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.
2. F2. These shares are represented by restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of common stock of the issuer. Of the shares underlying this RSU award, 34% shall vest on June 1, 2027 and the remainder shall vest in equal quarterly installments thereafter on each September 1, December 1, March 1 and June 1, so that all shares of common stock shall be vested as of June 1, 2029, subject to the reporting person's continuous service with the issuer as of each such vesting date.

Key Figures

RSU award shares: 4,175 shares Shares withheld for taxes: 692 shares Tax withholding price: $51.7800 per share +3 more

6 metrics

RSU award shares 4,175 shares Grant of restricted stock units on June 1, 2026

Shares withheld for taxes 692 shares Shares withheld to satisfy tax withholding obligations on June 1, 2026

Tax withholding price $51.7800 per share Per-share value used for the tax-withholding disposition of common stock

Post-transaction holdings 49,204 shares Direct common stock holdings after the reported transactions

RSU vesting on June 1, 2027 34% Portion of the RSU award scheduled to vest on June 1, 2027

Final RSU vesting date June 1, 2029 All shares underlying the RSU award scheduled to be vested by this date

Key Terms

restricted stock units, tax withholding obligations, contingent right, continuous service, +1 more

5 terms

restricted stock units financial

"These shares are represented by restricted stock units ("RSUs")."

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

"withholding of shares by the issuer to satisfy the reporting person's tax withholding obligations"

contingent right financial

"Each RSU represents a contingent right to receive one share of common stock"

continuous service financial

"subject to the reporting person's continuous service with the issuer"

vesting date financial

"so that all shares of common stock shall be vested as of June 1, 2029, subject to the reporting person's service as of each such vesting date"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What RSU award did Iridium Communications (IRDM) grant to CAO Timothy Kapalka?

Iridium Communications granted CAO Iridium Satellite LLC, Timothy Kapalka, 4,175 restricted stock units on June 1, 2026. Each RSU represents a contingent right to receive one share of common stock, subject to a vesting schedule running through June 1, 2029.

How many Iridium (IRDM) shares were withheld for Timothy Kapalkas taxes?

The company withheld 692 shares of common stock to satisfy Timothy Kapalkas tax withholding obligations in connection with the vesting and settlement of restricted stock units. These withheld shares are reported as a tax-withholding disposition, not as an open-market trade.

What is the vesting schedule for Timothy Kapalka19s new IRDM RSUs?

Of the shares underlying the 4,175 RSU award, 34% vest on June 1, 2027. The remaining RSUs vest in equal quarterly installments on September 1, December 1, March 1 and June 1, so all shares are vested by June 1, 2029, subject to continuous service.

How many Iridium (IRDM) shares does Timothy Kapalka hold after these transactions?

After the reported RSU grant and tax withholding, Timothy Kapalka directly holds 49,204 shares of Iridium Communications common stock. This figure reflects his post-transaction holding as reported, separate from any unvested restricted stock units.

Were Timothy Kapalka19s IRDM transactions made under a Rule 10b5-1 trading plan?

The filing19s Rule 10b5-1 checkbox is not marked as affirmative, indicating these transactions are not reported as being pursuant to a Rule 10b5-1 trading plan. They instead reflect an RSU grant and related tax withholding events.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/02/2026 - 07:55 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^*

Kapalka Timothy

(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)
	CAO Iridium Satellite LLC

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)		692	D	$51.78	45,029	D
Common Stock	06/01/2026		A		4,175(2)	A	$0	49,204	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.

2. These shares are represented by restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of common stock of the issuer. Of the shares underlying this RSU award, 34% shall vest on June 1, 2027 and the remainder shall vest in equal quarterly installments thereafter on each September 1, December 1, March 1 and June 1, so that all shares of common stock shall be vested as of June 1, 2029, subject to the reporting person's continuous service with the issuer as of each such vesting date.

	/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)