What price per share was used for the tax withholding in the Iridium Form 4?

The shares were valued at $51.78 each for the tax withholding. This price was used to calculate how many Iridium shares needed to be withheld to cover Scott Scheimreif’s tax liability on vested restricted stock units.

What triggered the tax-withholding share disposition reported for Iridium (IRDM)?

The withholding was triggered by the vesting and settlement of restricted stock units. When those units vested, Iridium retained 2,205 shares from the award to satisfy Scott Scheimreif’s tax withholding obligations instead of using cash.

Iridium (IRDM) EVP Scheimreif has 2,205 shares withheld to cover RSU taxes

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Iridium Communications EVP-Government Programs Scott Scheimreif reported a routine tax-related share withholding. On June 1, 2026, the issuer withheld 2,205 shares of common stock at $51.78 per share to cover his tax obligations from the vesting of restricted stock units. This was not an open-market sale and reflects payment of taxes rather than a discretionary trade. After the withholding, he directly holds 259,759 shares of Iridium Communications common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Scheimreif Scott

Role EVP-Government Programs

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	2,205	$51.78	$114K

Holdings After Transaction: Common Stock — 259,759 shares (Direct, null)

Footnotes (1)

[object Object]

Key Figures

Shares withheld for taxes: 2,205 shares Withholding price: $51.78 per share Shares after transaction: 259,759 shares +2 more

5 metrics

Shares withheld for taxes 2,205 shares Tax withholding disposition on June 1, 2026

Withholding price $51.78 per share Value used for tax-withholding shares

Shares after transaction 259,759 shares Direct ownership following tax withholding

Transaction code F Payment of tax liability by delivering securities

Transaction direction dispose Tax-withholding disposition, not open-market sale

Key Terms

tax-withholding disposition, restricted stock units, Form 4, Common Stock, +1 more

5 terms

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common Stock financial

""security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

tax withholding obligations financial

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

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Form 4 Insider Transactions: What Each Field Means →

06/02/2026 - 07:55 PM

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^*

Scheimreif Scott

(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)
	EVP-Government Programs

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/01/2026		F⁽¹⁾		2,205	D	$51.78	259,759	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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	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)

Source: View Original Filing on SEC EDGAR

FAQ

What did Iridium Communications EVP Scheimreif report on this Form 4 for IRDM?

Scott Scheimreif reported a tax-related share withholding, not an open-market trade. The company withheld 2,205 shares of Iridium common stock to satisfy tax obligations tied to vesting restricted stock units.

How many Iridium (IRDM) shares were withheld for taxes in this Form 4?

The filing shows 2,205 Iridium common shares withheld to cover taxes. These shares were retained by the issuer in connection with the vesting and settlement of restricted stock units granted to Scott Scheimreif.

Was this Iridium (IRDM) Form 4 an open-market sale by the executive?

No, the transaction was not an open-market sale. It was a tax-withholding disposition where the issuer withheld 2,205 shares to satisfy Scott Scheimreif’s tax obligations from vested restricted stock units.

How many Iridium (IRDM) shares does Scott Scheimreif hold after this Form 4 transaction?

After the tax withholding, Scott Scheimreif directly holds 259,759 Iridium common shares. This post-transaction balance shows that the 2,205 withheld shares were a small portion of his overall reported direct ownership.