Iridium director forfeits small RSU award

Iridium Communications Inc. director Thomas C. Canfield reported a small administrative change in his holdings.

Rhea-AI Filing Summary

Iridium Communications Inc. director Thomas C. Canfield reported a small administrative change in his holdings. He forfeited 135.7 shares of common stock back to the company at $0.00 per share when restricted stock units tied to a board committee role were cancelled after he stopped serving on that committee.

After this disposition to the issuer, he directly holds 233,655.1 shares of common stock and indirectly holds 36,682 shares through a grantor retained annuity trust where he is trustee and sole annuitant. No open-market buying or selling occurred in this filing.

Insider Trade Summary

Disposition: 135.7 shares

Disposition 2 txns

Insider Canfield Thomas C

Role Director

Type	Security	Shares	Price	Value
Disposition	Common Stock	135.7	$0.00	$0.00
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 233,655.1 shares (Direct); Common Stock — 36,682 shares (Indirect, By Thomas C. Canfield 2017 GRAT)

Footnotes (2)

1. F1. Reflects the forfeiture of certain restricted stock units that were granted to the reporting person on January 6, 2026 pursuant to the issuer's director compensation plan in lieu of annual cash committee member fees for service as a member of the issuer's Nominating and Corporate Governance Committee (the "Committee"), which forfeiture resulted from the reporting person's cessation of service on the Committee. Each restricted stock unit represented a contingent right to receive one share of common stock of the issuer.
2. F2. These shares are owned by a grantor retained annuity trust ("GRAT"). The reporting person is the trustee and sole annuitant of the GRAT.

Key Figures

Shares forfeited: 135.7 shares Disposition price: $0.00 per share Direct holdings after transaction: 233,655.1 shares +1 more

4 metrics

Shares forfeited 135.7 shares Restricted stock units returned to issuer

Disposition price $0.00 per share Forfeited RSUs to issuer

Direct holdings after transaction 233,655.1 shares Common stock directly owned post-disposition

Indirect holdings after transaction 36,682 shares Common stock held via 2017 GRAT

Key Terms

restricted stock units, disposition to issuer, grantor retained annuity trust ("GRAT"), director compensation plan

4 terms

restricted stock units financial

"Reflects the forfeiture of certain restricted stock units that were granted"

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.

disposition to issuer financial

"transaction_code_description": "Disposition to issuer""

grantor retained annuity trust ("GRAT") financial

"These shares are owned by a grantor retained annuity trust ("GRAT")."

director compensation plan financial

"granted to the reporting person on January 6, 2026 pursuant to the issuer's director compensation plan"

FAQ

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

What insider transaction did Iridium Communications (IRDM) report for Thomas C. Canfield?

Iridium Communications reported that director Thomas C. Canfield forfeited 135.7 shares of common stock back to the company. The shares came from restricted stock units tied to a board committee role that ended, so this was a compensation adjustment rather than an open-market trade.

Was the Iridium Communications (IRDM) Form 4 transaction a market sale or purchase?

The Form 4 transaction was not a market sale or purchase. Canfield’s 135.7 shares were returned to Iridium Communications at $0.00 per share when related restricted stock units were forfeited after he left a board committee, making it an administrative disposition to the issuer.

How many Iridium Communications (IRDM) shares does Thomas C. Canfield hold after this filing?

After this filing, Thomas C. Canfield directly holds 233,655.1 Iridium Communications common shares and indirectly holds 36,682 shares through a grantor retained annuity trust. These figures show his remaining economic interest following the small forfeiture of restricted stock units back to the company.

What caused the restricted stock unit forfeiture reported for Iridium Communications (IRDM)?

The forfeiture occurred because Canfield stopped serving on Iridium’s Nominating and Corporate Governance Committee. The restricted stock units had been granted instead of cash committee fees, and ending his committee role triggered cancellation of 135.7 units, each representing one common share.

How are indirect Iridium Communications (IRDM) holdings structured for Thomas C. Canfield?

Canfield’s indirect Iridium holdings are owned by a grantor retained annuity trust. He is the trustee and sole annuitant of this GRAT, which holds 36,682 common shares. The Form 4 identifies this trust structure to clarify how part of his ownership is held.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 05/26/2026 - 07:35 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^*

Canfield Thomas C

(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)
05/20/2026

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	05/20/2026		D		135.7(1)	D	$0	233,655.1	D
Common Stock								36,682	I	By Thomas C. Canfield 2017 GRAT(2)

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 forfeiture of certain restricted stock units that were granted to the reporting person on January 6, 2026 pursuant to the issuer's director compensation plan in lieu of annual cash committee member fees for service as a member of the issuer's Nominating and Corporate Governance Committee (the "Committee"), which forfeiture resulted from the reporting person's cessation of service on the Committee. Each restricted stock unit represented a contingent right to receive one share of common stock of the issuer.

2. These shares are owned by a grantor retained annuity trust ("GRAT"). The reporting person is the trustee and sole annuitant of the GRAT.

	/s/ Peter L. Trentman, Attorney-in-Fact	05/26/2026
	** 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)