Iridium EVP has 2,207 shares withheld for taxes

An Iridium EVP had shares withheld to cover taxes on RSU vesting and now holds over 250,000 shares directly.

Rhea-AI Filing Summary

Iridium Communications Inc. (IRDM) reported that officer Scott Scheimreif, EVP-Government Programs, had 2,207 shares of common stock withheld on September 1, 2026 to satisfy tax withholding obligations arising from the vesting and settlement of restricted stock units. The shares were valued at $46.98 per share for this tax-withholding transaction, and he now holds 257,552 shares of Iridium common stock directly.

Insider Trade Summary

Tax Withholding: 2,207 shares

Tax Withholding 1 txn

Insider Scheimreif Scott

Role EVP-Government Programs

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1	2,207	$46.98	$104K

Holdings After Transaction: Common Stock — 257,552 shares (Direct)

Footnotes (1)

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.

Key Figures

Shares withheld for taxes: 2,207 shares Per-share value used: $46.98 per share Direct holdings after transaction: 257,552 shares +1 more

4 metrics

Shares withheld for taxes 2,207 shares Withholding of common stock on September 1, 2026 to satisfy tax obligations on RSU vesting

Per-share value used $46.98 per share Valuation applied to the 2,207 withheld shares in the tax-withholding transaction

Direct holdings after transaction 257,552 shares Common stock directly held by Scott Scheimreif after the September 1, 2026 transaction

Shares used for tax liability transactions 2,207 shares Total shares in Form 4 coded as payment of tax liability by delivering or withholding securities

Key Terms

withholding of shares, tax withholding obligations, restricted stock units, Rule 10b5-1

4 terms

withholding of shares financial

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

tax withholding obligations financial

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

restricted stock units financial

"tax withholding obligations 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.

Rule 10b5-1 regulatory

"The document-level indicator for Rule 10b5-1 plans is marked false"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

What insider transaction did IRDM report for Scott Scheimreif?

Iridium reported that EVP-Government Programs Scott Scheimreif had 2,207 shares of common stock withheld on September 1, 2026 to cover tax withholding obligations from vested restricted stock units.

Was the Iridium (IRDM) insider transaction an open-market sale?

No. The filing states the transaction was withholding of shares by the issuer to satisfy tax withholding obligations tied to RSU vesting, not a discretionary open-market sale by the executive.

What price was used for the Iridium (IRDM) tax-withholding shares?

The 2,207 shares withheld to satisfy taxes were valued at $46.98 per share for the transaction, according to the Form 4 data.

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

After the tax-withholding transaction, Scott Scheimreif directly holds 257,552 shares of Iridium common stock, as reported in the filing.

Was the Iridium (IRDM) insider transaction under a Rule 10b5-1 trading plan?

No. The document-level indicator for Rule 10b5-1 plans is marked false, and the footnote describes the event as tax-related share withholding upon RSU vesting.

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

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Available on EDGAR 09/02/2026 - 05:12 PM Accepted by SEC EDGAR 09/02/2026 - 05:12 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^*

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)
09/01/2026

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	09/01/2026		F(1)		2,207	D	$46.98	257,552	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.

	/s/ Peter L. Trentman, Attorney-in-Fact	09/02/2026
	** 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)