Iridium director granted 37.7 dividend RSU credits

Iridium Communications Inc. director Louis M. Alterman reported an automatic share-based award tied to the company’s recent cash dividend.

Rhea-AI Filing Summary

Iridium Communications Inc. director Louis M. Alterman reported an automatic share-based award tied to the company’s recent cash dividend. On the quarterly dividend of $0.15 per share declared on May 20, 2026, he accrued 37.7 dividend equivalent rights on existing restricted stock units.

Each dividend equivalent right converts into one share of common stock when the underlying restricted stock units settle and follows the same vesting terms. After this grant, Alterman directly holds a total of 13,809.8 shares of Iridium common stock.

Insider Trade Summary

Grant/Award: 37.7 shares

Grant/Award 1 txn

Insider Alterman Louis M

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	37.7	$0.00	$0.00

Holdings After Transaction: Common Stock — 13,809.8 shares (Direct)

Footnotes (1)

1. F1. On May 20, 2026, the Issuer's board of directors declared a quarterly cash dividend in the amount of $0.15 per share of its common stock, payable on June 30, 2026 to stockholders of record of the common stock at the close of business on June 15, 2026 (the "Dividend"). The amount acquired in column 4 represents equivalent rights accrued as a result of the Dividend on restricted stock units with respect to the Issuer's common stock ("Original RSUs") held by the reporting person. Each dividend equivalent right entitles the reporting person to receive one share of the Issuer's common stock upon the settlement of the Original RSUs and is subject to the same terms and conditions, including vesting and settlement, as the Original RSUs to which it relates. The grant of dividend equivalent rights was approved by the Issuer's board of directors pursuant to Rule 16b-3 of the Securities Exchange Act of 1934, as amended.

Key Figures

Dividend per share: $0.15 per share Dividend equivalent rights granted: 37.7 shares Total shares after transaction: 13,809.8 shares +2 more

5 metrics

Dividend per share $0.15 per share Quarterly cash dividend declared May 20, 2026

Dividend equivalent rights granted 37.7 shares Dividend equivalents on existing RSUs for director

Total shares after transaction 13,809.8 shares Director’s direct holdings following grant

Dividend payment date June 30, 2026 Payable date for $0.15 quarterly cash dividend

Dividend record date June 15, 2026 Record date for common stockholders to receive dividend

Key Terms

restricted stock units, dividend equivalent right, quarterly cash dividend, Rule 16b-3

4 terms

restricted stock units financial

"The amount acquired in column 4 represents equivalent rights accrued as a result of the Dividend on restricted stock units with respect to the Issuer's common stock"

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.

dividend equivalent right financial

"Each dividend equivalent right entitles the reporting person to receive one share of the Issuer's common stock upon the settlement of the Original RSUs"

quarterly cash dividend financial

"declared a quarterly cash dividend in the amount of $0.15 per share of its common stock"

A quarterly cash dividend is a payment made by a company to its shareholders four times a year, usually based on its profits. It is like a regular bonus or reward for owning the company's stock, providing shareholders with income. Many investors see these payments as a sign of the company's stability and its ability to generate consistent profits.

Rule 16b-3 regulatory

"The grant of dividend equivalent rights was approved by the Issuer's board of directors pursuant to Rule 16b-3 of the Securities Exchange Act of 1934"

Rule 16b-3 is a Securities and Exchange Commission regulation that exempts certain routine, pre-approved transactions by company insiders from automatic liability for short-term trading profits. It acts like a safe harbor: if an insider follows a formal plan or the board approves specific transactions in advance, profits from buying and selling company stock within six months are not automatically reclaimed. Investors care because the rule clarifies when insider trades are permissible and reduces uncertainty about potential clawbacks.

FAQ

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

What insider transaction did Iridium Communications (IRDM) director Louis M. Alterman report?

Louis M. Alterman reported acquiring 37.7 dividend equivalent rights tied to restricted stock units. These rights arose from Iridium’s declared cash dividend and will convert into common shares when the underlying RSUs vest and settle under the same terms.

How many Iridium Communications (IRDM) shares does Louis M. Alterman hold after this Form 4?

After the reported grant, Louis M. Alterman directly holds 13,809.8 shares of Iridium common stock. This total includes the 37.7 dividend equivalent rights that will deliver shares upon settlement of his related restricted stock units in the future.

What dividend triggered the dividend equivalent rights reported for Iridium (IRDM)?

The rights stem from a quarterly cash dividend of $0.15 per share declared on May 20, 2026. The dividend is payable June 30, 2026 to shareholders of record on June 15, 2026, and generated additional credits on outstanding restricted stock units.

How do Iridium (IRDM) dividend equivalent rights on RSUs work for this director grant?

Each dividend equivalent right represents one future share of Iridium common stock linked to existing restricted stock units. These rights share the same vesting and settlement schedule as the original RSUs, rather than being immediately tradeable shares or a separate cash payout.

Was the Iridium (IRDM) dividend-related RSU grant approved under a specific SEC rule?

Yes. The grant of dividend equivalent rights on the director’s restricted stock units was approved by Iridium’s board of directors under Rule 16b-3 of the Securities Exchange Act of 1934, which governs certain insider-related equity compensation transactions.

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

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Accepted by SEC EDGAR 07/02/2026 - 04:06 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^*

Alterman Louis M

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

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(1)	06/30/2026		A		37.7	A	$0	13,809.8	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. On May 20, 2026, the Issuer's board of directors declared a quarterly cash dividend in the amount of $0.15 per share of its common stock, payable on June 30, 2026 to stockholders of record of the common stock at the close of business on June 15, 2026 (the "Dividend"). The amount acquired in column 4 represents equivalent rights accrued as a result of the Dividend on restricted stock units with respect to the Issuer's common stock ("Original RSUs") held by the reporting person. Each dividend equivalent right entitles the reporting person to receive one share of the Issuer's common stock upon the settlement of the Original RSUs and is subject to the same terms and conditions, including vesting and settlement, as the Original RSUs to which it relates. The grant of dividend equivalent rights was approved by the Issuer's board of directors pursuant to Rule 16b-3 of the Securities Exchange Act of 1934, as amended.

	/s/ Peter L. Trentman, Attorney-in-Fact	07/02/2026
	** 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)