Iridium officer sold 19,521 shares, plans more

An Iridium Communications officer filed a Rule 144 notice covering planned sales of restricted stock and disclosed two sizeable common stock sales in the prior three months.

Rhea-AI Filing Summary

Iridium Communications Inc. (IRDM) officer Timothy J. Last filed a notice under Rule 144 to sell shares of the company’s common stock, including multiple blocks of restricted stock originally issued by Iridium. The filing also reports recent open-market sales of Iridium common shares during the prior three months.

Key Figures

Shares sold September 3, 2026: 2,013 shares Aggregate proceeds September 3, 2026: $95,341.72 Shares sold August 17, 2026: 19,521 shares +3 more

6 metrics

Shares sold September 3, 2026 2,013 shares Common stock of Iridium Communications Inc. sold by Timothy J. Last

Aggregate proceeds September 3, 2026 $95,341.72 Total amount reported for 2,013 IRDM shares sold on that date

Shares sold August 17, 2026 19,521 shares Common stock of Iridium Communications Inc. sold by Timothy J. Last

Aggregate proceeds August 17, 2026 $982,753.51 Total amount reported for 19,521 IRDM shares sold on that date

Example planned sale block 4,068 shares Restricted common stock dated March 1, 2026 listed under securities to be sold

Additional planned sale blocks 246; 164; 412; 87; 314; 314 shares Individual restricted-stock line items listed as securities to be sold

Key Terms

Rule 144, Restricted Stock, NASDAQ

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock financial

"Common | 12/01/2025 | Restricted Stock | Issuer |"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

NASDAQ market

"09/15/2026 | NASDAQ"

The Nasdaq is a stock exchange where many companies' shares are bought and sold, functioning much like a marketplace for investments. It matters to investors because it provides a platform to buy and sell ownership stakes in companies, helping them track the value of those companies and make informed decisions. As one of the largest and most technology-focused markets, it also reflects trends and developments in the business world.

FAQ

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

What does the Form 144 filing by IRDM officer Timothy J. Last disclose?

It discloses that Timothy J. Last, an officer of Iridium Communications Inc. (IRDM), intends to sell shares of Iridium common stock under Rule 144, including restricted stock, and lists common stock sales already completed in the prior three months.

How many IRDM shares did Timothy J. Last sell on September 3, 2026?

On September 3, 2026, Timothy J. Last sold 2,013 shares of Iridium Communications common stock for an aggregate amount of $95,341.72, as reported in the Form 144 section covering securities sold during the past three months.

What IRDM stock sale did the Form 144 report for August 17, 2026?

For August 17, 2026, the Form 144 reports that Timothy J. Last sold 19,521 shares of Iridium Communications common stock for an aggregate amount of $982,753.51, listed under securities sold during the past three months.

What type of IRDM securities does Timothy J. Last plan to sell under Rule 144?

The notice lists restricted stock of Iridium Communications Inc. common stock to be sold under Rule 144, with several line items of restricted common shares originally issued by the company on dates including October 1, 2025, December 1, 2025, and March 1, 2026.

Which broker is named for the planned IRDM stock sales in the Form 144?

The Form 144 names Morgan Stanley Smith Barney LLC Executive Financial Services as the broker for the planned sales of Iridium Communications Inc. common stock, with the securities listed for trading on NASDAQ.

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

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Available on EDGAR 09/15/2026 - 05:32 PM Accepted by SEC EDGAR 09/15/2026 - 05:31 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002046045
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	IRIDIUM COMMUNICATIONS INC.
SEC File Number	001-33963
Address of Issuer	1676 International Drive, Suite 1100 McLean VIRGINIA 22102
Phone	703-287-7400
Name of Person for Whose Account the Securities are To Be Sold	TIMOTHY J LAST
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	5769	267393.15	105960383	09/15/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	12/01/2025	Restricted Stock	Issuer			246	12/01/2025	Not Applicable
Common	12/01/2025	Restricted Stock	Issuer			164	12/01/2025	Not Applicable
Common	03/01/2026	Restricted Stock	Issuer			164	03/01/2026	Not Applicable
Common	12/01/2025	Restricted Stock	Issuer			412	12/01/2025	Not Applicable
Common	03/01/2026	Restricted Stock	Issuer			4068	03/01/2026	Not Applicable
Common	10/01/2025	Restricted Stock	Issuer			87	10/01/2025	Not Applicable
Common	12/01/2025	Restricted Stock	Issuer			314	12/01/2025	Not Applicable
Common	03/01/2026	Restricted Stock	Issuer			314	03/01/2026	Not Applicable

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
TIMOTHY J LAST 1676 International Drive, Suite 1100 McLean VA 22102	Common	09/03/2026	2013	95341.72
TIMOTHY J LAST 1676 International Drive, Suite 1100 McLean VA 22102	Common	08/17/2026	19521	982753.51

144: Remarks and Signature

Remarks
Date of Notice	09/15/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Timothy James Last
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)