IRIDIUM COMMUNICATIONS INC IRDM
COM · Common Stock · CUSIP 46269C102 · ISIN US46269C1027
Satellite communications provider
- SectorCommunication
- IndustryCommunications Services, NEC
- HeadquartersMclean, VA
- Founded2001
- Websiteiridium.com
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($39.4m this quarter). Holder counts are more reliable. Shares outstanding: 106.0m as of 2026-07-15, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $54.80. Options: 16 managers hold calls ($96.7m notional), 11 hold puts ($30.6m).
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 331 |
| Q4 2022 | 364 |
| Q1 2023 | 372 |
| Q2 2023 | 392 |
| Q3 2023 | 361 |
| Q4 2023 | 347 |
| Q1 2024 | 332 |
| Q2 2024 | 344 |
| Q3 2024 | 353 |
| Q4 2024 | 349 |
| Q1 2025 | 352 |
| Q2 2025 | 334 |
| Q3 2025 | 324 |
| Q4 2025 | 325 |
| Q1 2026 | 382 |
| Q2 2026 | 482 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 163 | 171 |
| Q4 2024 | 161 | 177 |
| Q1 2025 | 182 | 165 |
| Q2 2025 | 155 | 212 |
| Q3 2025 | 177 | 178 |
| Q4 2025 | 161 | 174 |
| Q1 2026 | 221 | 146 |
| Q2 2026 | 300 | 174 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $10.4m | $11.0m | 1.05 |
| Q4 2025 | $12.3m | $9.6m | 0.78 |
| Q1 2026 | $30.4m | $10.5m | 0.35 |
| Q2 2026 | $96.7m | $30.6m | 0.32 |
Biggest buyers
| AQR CAPITAL MANAGEMENT LLC | Added | +3.9m |
| AMERICAN CENTURY COMPANIES INC | Added | +1.4m |
| Pacer Advisors, Inc. | Added | +1.3m |
| Balyasny Asset Management L.P. | Added | +844.0k |
| VAN ECK ASSOCIATES CORP | Added | +766.2k |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | New | +510.0k |
| RENAISSANCE TECHNOLOGIES LLC | Added | +481.7k |
| Sculptor Capital LP | New | +469.0k |
| Jefferies Financial Group Inc. | New | +396.1k |
| IMC-Chicago, LLC | New | +354.4k |
Biggest sellers
| Silver Heights Capital Management Inc | Reduced | -1.9m |
| Man Group plc | Reduced | -1.5m |
| Select Equity Group, L.P. | Sold out | -942.5k |
| BARCLAYS PLC | Reduced | -907.5k |
| JUPITER ASSET MANAGEMENT LTD | Sold out | -893.3k |
| Gotham Asset Management, LLC | Reduced | -839.7k |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | -651.4k |
| SCHRODER INVESTMENT MANAGEMENT GROUP | Reduced | -640.8k |
| ARK Investment Management LLC | Reduced | -511.7k |
| BlackRock, Inc. | Reduced | -492.3k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $23.9m435.6k shares |
| CITADEL ADVISORS LLC | Added | $22.4m408.0k shares |
| JANE STREET GROUP, LLC | Added | $12.5m228.3k shares |
| PEAK6 LLC | Reduced | $11.0m199.9k shares |
| TIG Advisors, LLC | New | $9.2m168.6k shares |
| GROUP ONE TRADING LLC | Reduced | $6.5m118.0k shares |
| IMC-Chicago, LLC | Added | $4.8m87.5k shares |
| SIMPLEX TRADING, LLC | Added | $2.1m38.9k shares |
| Squarepoint Ops LLC | New | $1.3m24.0k shares |
| Point72 Asset Management, L.P. | Reduced | $1.2m21.8k shares |
Biggest puts
| CITADEL ADVISORS LLC | Added | $7.3m132.6k shares |
| IMC-Chicago, LLC | Added | $5.5m100.6k shares |
| JANE STREET GROUP, LLC | Added | $4.6m84.6k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $4.3m78.2k shares |
| Walleye Trading LLC | Added | $3.0m54.3k shares |
| Squarepoint Ops LLC | New | $2.2m40.4k shares |
| Walleye Capital LLC | Reduced | $1.7m30.7k shares |
| TUDOR INVESTMENT CORP ET AL | Added | $1.0m18.4k shares |
| GROUP ONE TRADING LLC | Reduced | $449.8k8.2k shares |
| Point72 Asset Management, L.P. | New | $279.7k5.1k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution +2.9 pts · filed 2026-01-08 | 12.5% |
| Baralonco Ltd 13D · may seek influence -0.1 pts · filed 2026-08-04 | 9.4% |
| AQR CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-08-13 | 6.6% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-29 | 5.8% |
Fell to 5% or below in the last year: Silver Heights Capital Management Inc (3.1%, 2026-08-12), VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), ARK Investment Management LLC (3.9%, 2025-12-05), BAMCO INC /NY/ (0.7%, 2025-11-14)
Insider purchases and sales since 1 Apr 2026
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 2 | $1.3m | — |
| Q1 2025 | 0 | — | 4 | $1.0m | $358.3k |
| Q2 2025 | 0 | — | 1 | $50.1k | — |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 2 | $871.3k | 1 | $557.4k | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 1 | $184.9k | $184.9k |
| Q3 2026 | 0 | — | 6 | $19.6m | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-15 | Last Timothy James EVP, Sales & Marketing | Sold | $267.4k5.8k shares |
| 2026-09-03 | Last Timothy James EVP, Sales & Marketing | Sold | $95.3k2.0k shares |
| 2026-08-18 | FITZPATRICK THOMAS Director | Sold | $740.3k15.0k shares |
| 2026-08-17 | FITZPATRICK THOMAS Director | Sold | $10.5m209.2k shares |
| 2026-08-17 | McBride Suzanne E. Chief Operations Officer, director | Sold | $4.3m85.5k shares |
| 2026-08-17 | Morgan Kathleen A. Chief Legal Officer | Sold | $1.7m33.2k shares |
| 2026-08-17 | Last Timothy James EVP, Sales & Marketing | Sold | $982.8k19.5k shares |
| 2026-08-17 | Kapalka Timothy CAO Iridium Satellite LLC | Sold | $680.5k13.5k shares |
| 2026-08-17 | Olson Eric T Director | Sold | $404.9k8.0k shares |
| 2026-04-06 | Kapalka Timothy CAO Iridium Satellite LLC | Sold plan | $67.4k2.0k shares |
| 2026-04-02 | Kapalka Timothy CAO Iridium Satellite LLC | Sold plan | $117.5k3.8k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 13.4m $737.6m | Reduced -492.3k |
| AQR CAPITAL MANAGEMENT LLC 0.13% of their portfolio | 6.8m $374.3m | Added +3.9m |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 5.4m $298.4m | Reduced -651.4k |
| AMERICAN CENTURY COMPANIES INC 0.12% of their portfolio | 4.9m $266.4m | Added +1.4m |
| STATE STREET CORP 0.01% of their portfolio | 4.7m $259.6m | Reduced -316.5k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 4.2m $232.1m | Added +120.8k |
| Silver Heights Capital Management Inc 55.43% of their portfolio | 3.3m $179.6m | Reduced -1.9m |
| Gotham Asset Management, LLC 0.32% of their portfolio | 2.5m $137.9m | Reduced -839.7k |
| DIMENSIONAL FUND ADVISORS LP 0.02% of their portfolio | 2.4m $129.3m | Added +198.8k |
| VAN ECK ASSOCIATES CORP 0.08% of their portfolio | 2.3m $124.6m | Added +766.2k |
| Pacer Advisors, Inc. 0.31% of their portfolio | 2.2m $118.9m | Added +1.3m |
| GEODE CAPITAL MANAGEMENT, LLC 0.01% of their portfolio | 2.0m $112.2m | Added +37.8k |
| MORGAN STANLEY 0.00% of their portfolio | 1.5m $83.2m | Reduced -65.9k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.01% of their portfolio | 1.3m $72.3m | Reduced -48.2k |
| ARK Investment Management LLC 0.43% of their portfolio | 1.2m $66.6m | Reduced -511.7k |
| Bank of New York Mellon Corp 0.01% of their portfolio | 1.1m $62.8m | Reduced -6.4k |
| UBS Group AG 0.01% of their portfolio | 1.0m $55.2m | Reduced -279.0k |
| Balyasny Asset Management L.P. 0.10% of their portfolio | 967.6k $53.1m | Added +844.0k |
| Invesco Ltd. 0.00% of their portfolio | 908.1k $49.8m | Reduced -79.8k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 854.1k $46.8m | Reduced -9.4k |
| Penserra Capital Management LLC 0.35% of their portfolio | 838.6k $46.0m | Added +82.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 789.2k $43.3m | Added +80.9k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.02% of their portfolio | 754.4k $41.4m | Reduced -346.8k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 726.8k $39.9m | Reduced -201.6k |
| VANGUARD FIDUCIARY TRUST CO 0.01% of their portfolio | 658.0k $36.1m | Added +21.1k |
| SCHRODER INVESTMENT MANAGEMENT GROUP 0.02% of their portfolio | 641.9k $35.0m | Reduced -640.8k |
| RENAISSANCE TECHNOLOGIES LLC 0.05% of their portfolio | 609.8k $33.4m | Added +481.7k |
| Sumitomo Mitsui Trust Group, Inc. 0.02% of their portfolio | 587.2k $32.2m | Reduced -204.6k |
| Amova Asset Management Americas, Inc. 0.39% of their portfolio | 550.7k $30.2m | Reduced -186.3k |
| BROWN ADVISORY INC 0.04% of their portfolio | 512.9k $28.1m | Added +283 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 0.01% of their portfolio | 510.0k $28.0m | New |
| PRINCIPAL FINANCIAL GROUP INC 0.01% of their portfolio | 509.5k $27.9m | Added +1.2k |
| Nuveen, LLC 0.01% of their portfolio | 502.7k $27.6m | Added +77.5k |
| FMR LLC 0.00% of their portfolio | 483.1k $26.5m | Reduced -56.9k |
| PANAGORA ASSET MANAGEMENT INC 0.08% of their portfolio | 482.0k $26.4m | Reduced -47.5k |
| Sculptor Capital LP 0.27% of their portfolio | 469.0k $25.7m | New |
| FIRST TRUST ADVISORS LP 0.02% of their portfolio | 465.8k $25.5m | Added +113.5k |
| Man Group plc 0.04% of their portfolio | 416.4k $22.8m | Reduced -1.5m |
| Public Sector Pension Investment Board 0.06% of their portfolio | 407.3k $22.3m | Added +31.8k |
| Russell Investments Group, Ltd. 0.02% of their portfolio | 401.8k $22.0m | Added +48.9k |
| Jefferies Financial Group Inc. 0.20% of their portfolio | 396.1k $21.7m | New |
| PINNACLE ASSOCIATES LTD 0.24% of their portfolio | 394.7k $21.6m | Reduced -168.1k |
| Legal & General Group Plc 0.00% of their portfolio | 380.1k $20.8m | Added +1.4k |
| TWO SIGMA INVESTMENTS, LP 0.02% of their portfolio | 363.7k $19.9m | Reduced -38.7k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.02% of their portfolio | 361.7k $19.8m | Added +70.0k |
| IMC-Chicago, LLC 0.18% of their portfolio | 354.4k $19.4m | New |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 340.9k $18.7m | Reduced -18.7k |
| Mitsubishi UFJ Asset Management Co., Ltd. 0.01% of their portfolio | 327.9k $18.0m | Reduced -210.5k |
| Jupiter Topco LLC 0.01% of their portfolio | 325.4k $17.8m | First filing |
| IEQ CAPITAL, LLC 0.08% of their portfolio | 311.2k $17.1m | Added +269.8k |
| Tema ETFs LLC 0.55% of their portfolio | 309.2k $17.0m | First filing |
| BRAUN STACEY ASSOCIATES INC 0.46% of their portfolio | 295.9k $16.2m | New |
| ALPINE ASSOCIATES MANAGEMENT INC. 0.99% of their portfolio | 289.7k $15.9m | New |
| Defiance ETFs, LLC 0.21% of their portfolio | 277.2k $15.4m | Added +22.0k |
| Mariner, LLC 0.02% of their portfolio | 272.4k $14.9m | Added +154.7k |
| NORDEA INVESTMENT MANAGEMENT AB 0.01% of their portfolio | 260.0k $13.9m | Added +4.2k |
| Robertson Opportunity Capital, LLC 5.33% of their portfolio | 250.3k $13.7m | Reduced -37.0k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 245.1k $13.4m | Reduced -106.1k |
| MACKENZIE FINANCIAL CORP 0.01% of their portfolio | 236.5k $13.0m | Added +185.8k |
| CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT 0.58% of their portfolio | 236.0k $12.9m | New |
| ArchPoint Investors 2.67% of their portfolio | 230.8k $12.7m | Added +33.7k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 223.0k $12.2m | Reduced -145.3k |
| BESSEMER GROUP INC 0.02% of their portfolio | 217.6k $11.9m | Added +130 |
| Premier Fund Managers Ltd 1.02% of their portfolio | 206.4k $11.3m | New |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 198.1k $10.9m | Reduced -36.2k |
| Swiss National Bank 0.01% of their portfolio | 185.3k $10.2m | Reduced -1.1k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 181.5k $10.0m | Reduced -51.8k |
| Weiss Asset Management LP 0.11% of their portfolio | 173.4k $9.5m | Not comparable |
| BLAIR WILLIAM & CO/IL 0.02% of their portfolio | 172.5k $9.5m | Reduced -47.7k |
| Cerity Partners LLC 0.01% of their portfolio | 171.9k $9.4m | Added +116.7k |
| CX Institutional 0.27% of their portfolio | 171.1k $9.4m | Reduced -101.7k |
| CITIGROUP INC 0.00% of their portfolio | 163.7k $9.0m | Added +49.7k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 153.2k $8.4m | Reduced -341.5k |
| Magnetar Financial LLC 0.08% of their portfolio | 153.2k $8.4m | New |
| Retirement Systems of Alabama 0.03% of their portfolio | 151.4k $8.3m | Unchanged |
| Qube Research & Technologies Ltd 0.01% of their portfolio | 149.1k $8.2m | New |
| Amundi 0.00% of their portfolio | 141.8k $7.8m | Added +113.8k |
| PDT Partners, LLC 0.40% of their portfolio | 138.2k $7.6m | Unchanged |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.04% of their portfolio | 135.2k $7.4m | Reduced -25.8k |
| AQR Arbitrage LLC 0.10% of their portfolio | 132.6k $7.2m | New |
| Creative Planning 0.00% of their portfolio | 130.0k $7.1m | Added +50.2k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 128.5k $7.0m | Reduced -90.7k |
| LPL Financial LLC 0.00% of their portfolio | 127.6k $7.0m | Added +77.7k |
| Inspire Investing, LLC 0.27% of their portfolio | 119.7k $6.6m | Added +95.3k |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. 0.01% of their portfolio | 115.0k $6.3m | Added +85.6k |
| NEW YORK STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 110.1k $6.0m | Reduced -1.1k |
| CANADA LIFE ASSURANCE Co 0.01% of their portfolio | 109.5k $6.0m | Added +5.9k |
| Advisors Asset Management, Inc. 0.09% of their portfolio | 106.8k $5.9m | Reduced -3.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.01% of their portfolio | 106.7k $5.9m | Reduced -5.3k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 104.1k $5.7m | Added +8.3k |
| MERCER GLOBAL ADVISORS INC /ADV 0.01% of their portfolio | 104.1k $5.7m | Added +54.8k |
| XTX Topco Ltd 0.07% of their portfolio | 100.1k $5.5m | Added +33.4k |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 97.8k $5.4m | Added +20.6k |
| PRUDENTIAL FINANCIAL INC 0.01% of their portfolio | 95.6k $5.2m | Reduced -655 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.01% of their portfolio | 89.2k $4.1m | Added +35.2k |
| Quantinno Capital Management LP 0.01% of their portfolio | 88.3k $4.8m | Added +26.5k |
| BARCLAYS PLC 0.00% of their portfolio | 86.6k $4.7m | Reduced -907.5k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 85.7k $4.7m | Added +245 |
| Daiwa Securities Group Inc. 0.01% of their portfolio | 85.4k $4.7m | Reduced -35.1k |
| Thrivent Financial for Lutherans 0.01% of their portfolio | 82.8k $4.5m | Added +4.0k |