Iridium Communications Inc
Ownership
Ownership Structure
Who owns Iridium Communications Inc (IRDM)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.1% of the shares are freely tradable; institutional investors hold 90.1%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 12.69 | 13,447,338 | -3.5 | 06/30/2026 |
| AQR Capital Management LLC | 6.46 | 6,847,072 | +134.7 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.13 | 5,440,399 | -10.7 | 06/30/2026 |
| American Century Companies Inc | 4.58 | 4,856,440 | +40.0 | 06/30/2026 |
| State Street Corp | 4.47 | 4,733,714 | -6.3 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.99 | 4,232,161 | +2.9 | 06/30/2026 |
| Silver Heights Capital Management Inc. | 3.09 | 3,274,947 | -36.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.95 | 6,311,060 | +0.0 | 09/30/2026 |
| Avantis US Small Cap Value ETF | 3.63 | 3,846,006 | +0.0 | 09/30/2026 |
| Vanguard MStar Total Stk Mkt Idx Invest | 2.70 | 2,866,063 | +0.3 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Desch Matthew J | Chief Executive Officer | 1,398,634 | 61,400,033 $ | Oct 22, 2026 | direct |
| McBride Suzanne E. | Chief Operations Officer | 260,991 | 11,457,505 $ | Sep 1, 2026 | direct |
| Scheimreif Scott | EVP-Government Programs | 257,552 | 11,306,533 $ | Sep 1, 2026 | direct |
| Canfield Thomas C | Director | 235,028 | 10,317,720 $ | Sep 30, 2026 | direct |
| Olson Eric T | Director | 150,122 | 6,590,351 $ | Sep 30, 2026 | direct |
| O'Neill Vincent James | Chief Financial Officer | 126,944 | 5,572,842 $ | Sep 1, 2026 | direct |
| Morgan Kathleen A. | Chief Legal Officer | 122,818 | 5,391,710 $ | Sep 1, 2026 | direct |
| Last Timothy James | EVP, Sales & Marketing | 84,130 | 3,693,307 $ | Sep 15, 2026 | direct |
| Frazier Leon Anthony | Director | 46,611 | 2,046,201 $ | Sep 30, 2026 | direct |
| Niehaus Robert H | Director | 43,315 | 1,901,542 $ | Sep 30, 2026 | direct |
| Fitzpatrick Thomas | Director | 43,315 | 1,901,542 $ | Sep 30, 2026 | direct |
| Thoma Donald Lee | EVP, Aireon | 41,949 | 1,841,561 $ | Jul 10, 2026 | direct |
| Kapalka Timothy | CAO Iridium Satellite LLC | 35,038 | 1,538,168 $ | Sep 1, 2026 | direct |
| Sears Kay | Director | 30,148 | 1,323,502 $ | Sep 30, 2026 | direct |
| Yeaney Jacqueline E | Director | 25,374 | 1,113,910 $ | Sep 30, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 22, 2026 | Desch Matthew J | Chief Executive Officer | Other | 42,800 | 0.00 | – |
| Sep 30, 2026 | Frazier Leon Anthony | Director | Other | 107 | 0.00 | – |
| Sep 30, 2026 | Yeaney Jacqueline E | Director | Other | 34 | 0.00 | – |
| Sep 30, 2026 | Sears Kay | Director | Other | 34 | 0.00 | – |
| Sep 30, 2026 | Alterman Louis M | Director | Other | 43 | 0.00 | – |
| Sep 30, 2026 | Shivanandan Monique S. | Director | Other | 50 | 0.00 | – |
| Sep 30, 2026 | Niehaus Robert H | Director | Other | 56 | 0.00 | – |
| Sep 30, 2026 | Canfield Thomas C | Director | Other | 734 | 0.00 | – |
| Sep 30, 2026 | Fitzpatrick Thomas | Director | Other | 56 | 0.00 | – |
| Sep 30, 2026 | Olson Eric T | Director | Other | 442 | 0.00 | – |
| Sep 15, 2026 | Last Timothy James | EVP, Sales & Marketing | Sell | 5,769 | 46.35 | 267,393 |
| Sep 3, 2026 | Last Timothy James | EVP, Sales & Marketing | Sell | 2,013 | 47.36 | 95,336 |
| Sep 1, 2026 | O'Neill Vincent James | Chief Financial Officer | Other | 1,461 | 46.98 | 68,638 |
| Sep 1, 2026 | Kapalka Timothy | CAO Iridium Satellite LLC | Other | 693 | 46.98 | 32,557 |
| Sep 1, 2026 | Last Timothy James | EVP, Sales & Marketing | Other | 1,501 | 46.98 | 70,517 |
| Sep 1, 2026 | McBride Suzanne E. | Chief Operations Officer | Other | 3,623 | 46.98 | 170,209 |
| Sep 1, 2026 | Scheimreif Scott | EVP-Government Programs | Other | 2,207 | 46.98 | 103,685 |
| Sep 1, 2026 | Desch Matthew J | Chief Executive Officer | Other | 9,583 | 46.98 | 450,209 |
| Sep 1, 2026 | Morgan Kathleen A. | Chief Legal Officer | Other | 2,053 | 46.98 | 96,450 |
| Aug 20, 2026 | McBride Suzanne E. | Chief Operations Officer | Other | 17,403 | 0.00 | – |
| Aug 18, 2026 | Fitzpatrick Thomas | Director | Sell | 15,046 | 49.20 | 740,263 |
| Aug 17, 2026 | Fitzpatrick Thomas | Director | Sell | 209,233 | 50.22 | 10,507,681 |
| Aug 17, 2026 | Last Timothy James | EVP, Sales & Marketing | Sell | 500 | 50.88 | 25,440 |
| Aug 17, 2026 | Last Timothy James | EVP, Sales & Marketing | Sell | 19,021 | 50.33 | 957,327 |
| Aug 17, 2026 | Kapalka Timothy | CAO Iridium Satellite LLC | Sell | 13,473 | 50.51 | 680,521 |
| Aug 17, 2026 | McBride Suzanne E. | Chief Operations Officer | Sell | 85,454 | 50.28 | 4,296,627 |
| Aug 17, 2026 | Morgan Kathleen A. | Chief Legal Officer | Sell | 544 | 50.85 | 27,662 |
| Aug 17, 2026 | Morgan Kathleen A. | Chief Legal Officer | Sell | 32,648 | 50.34 | 1,643,500 |
| Aug 17, 2026 | Olson Eric T | Director | Sell | 8,000 | 50.61 | 404,880 |
| Aug 17, 2026 | Niehaus Robert H | Director | Other | 50,000 | 0.00 | – |
| Jul 10, 2026 | Thoma Donald Lee | EVP, Aireon | Other | 41,949 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 3, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.