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Ownership stakes (13D / 13G)
Investors who own more than 5% of a company, from activists (13D) to passive holders (13G).
About this data
- What it is
- An investor who owns more than 5% of a public company must say so. Investors who may try to influence the company, such as activists, file the longer Schedule 13D; passive holders file the shorter Schedule 13G.
- Who files it
- The investor, within days of crossing 5%, and again whenever the stake changes materially.
- How current
- We collect new filings throughout the day on SEC business days.
- Worth knowing
- 13G filings are far more common than 13D. A 13D usually means the investor intends to push for changes, so it tends to get more attention.
All of this comes from public filings.
Source and freshness · Information, not investment advice (disclaimer).
Filings per day, last 30 days
13D (activist) 13G (passive)
Latest ownership filings
Showing: ticker IRDM
| Filed | ScheduleBoth report a stake of more than 5%. A 13D is filed by investors who may try to influence the company, such as activists; a 13G by passive holders. | Company | Investor | Shares | % of shares | Filing |
|---|---|---|---|---|---|---|
| Nov 12, 2026 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | AQR Capital Management Holdings, LLC | 1.48M | 1.4% | SCHEDULE 13G/A ↗ |
| Nov 12, 2026 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | AQR Capital Management, LLC | 1.48M | 1.4% | SCHEDULE 13G/A ↗ |
| Aug 13, 2026 | SCHEDULE 13G | IRDM Iridium Communications Inc | AQR Capital Management Holdings, LLC | 6.98M | 6.6% | SCHEDULE 13G ↗ |
| Aug 13, 2026 | SCHEDULE 13G | IRDM Iridium Communications Inc | AQR Capital Management, LLC | 6.98M | 6.6% | SCHEDULE 13G ↗ |
| Aug 12, 2026 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Silver Heights Capital Management Inc | 3.27M | 3.1% | SCHEDULE 13G/A ↗ |
| Aug 4, 2026 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Fahd bin Khalid bin Abdullah bin Abdulrahman, as legal representative of the Estate of the late Khalid bin Abdullah bin Abdulrahman | 10.00M | 9.4% | SCHEDULE 13D/A ↗ |
| Aug 4, 2026 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Estate of the late Khalid bin Abdullah bin Abdulrahman | 10.00M | 9.4% | SCHEDULE 13D/A ↗ |
| Aug 4, 2026 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Baralonco Limited | 10.00M | 9.4% | SCHEDULE 13D/A ↗ |
| Apr 29, 2026 | SCHEDULE 13G | IRDM Iridium Communications Inc | Vanguard Portfolio Management | 6.10M | 5.8% | SCHEDULE 13G ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Fahd bin Khalid bin Abdullah bin Abdulrahman, as legal representative of the Estate of the late Khalid bin Abdullah bin Abdulrahman | 10.00M | 9.5% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Estate of the late Khalid bin Abdullah bin Abdulrahman | 10.00M | 9.5% | SCHEDULE 13D/A ↗ |
| Apr 2, 2026 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Baralonco Limited | 10.00M | 9.5% | SCHEDULE 13D/A ↗ |
| Mar 26, 2026 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | The Vanguard Group | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Mar 5, 2026 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | The Vanguard Group | 10.77M | 10.3% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Silver Heights Capital Management Inc | 5.25M | 5.0% | SCHEDULE 13G/A ↗ |
| Feb 13, 2026 | SCHEDULE 13G | IRDM Iridium Communications Inc | Silver Heights Capital Management Inc | 5.25M | 5.0% | SCHEDULE 13G ↗ |
| Jan 8, 2026 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | BlackRock, Inc. | 13.07M | 12.5% | SCHEDULE 13G/A ↗ |
| Dec 5, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Catherine D. Wood | 4.12M | 3.9% | SCHEDULE 13G/A ↗ |
| Dec 5, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | ARK Investment Management LLC | 4.12M | 3.9% | SCHEDULE 13G/A ↗ |
| Nov 26, 2025 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Fahd bin Khalid bin Abdullah bin Abdulrahman, as legal representative of the Estate of the late Khalid Bin Abdullah Bin Abdulrahman | 10.43M | 10.0% | SCHEDULE 13D/A ↗ |
| Nov 26, 2025 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Estate of the late Khalid bin Abdullah bin Abdulrahman | 10.43M | 10.0% | SCHEDULE 13D/A ↗ |
| Nov 26, 2025 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Baralonco Limited | 10.43M | 10.0% | SCHEDULE 13D/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Baron Growth Fund | 0 | 0.0% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Ronald Baron | 682,926 | 0.7% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Baron Capital Management, Inc. | 670,238 | 0.6% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Baron Capital Group, Inc. | 682,986 | 0.7% | SCHEDULE 13G/A ↗ |
| Nov 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Bamco Inc /NY/ | 12,688 | 0.0% | SCHEDULE 13G/A ↗ |
| Nov 4, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Catherine D. Wood | 6.49M | 6.1% | SCHEDULE 13G/A ↗ |
| Nov 4, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | ARK Investment Management LLC | 6.49M | 6.1% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Baron Growth Fund | 590,000 | 5.5% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Ronald Baron | 8.38M | 7.8% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Baron Capital Management, Inc. | 636,368 | 0.6% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Baron Capital Group, Inc. | 8.38M | 7.8% | SCHEDULE 13G/A ↗ |
| Aug 14, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | Bamco Inc /NY/ | 7.74M | 7.2% | SCHEDULE 13G/A ↗ |
| Jun 26, 2025 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Fahd bin Khalid bin Abdullah bin Abdulrahman | 10.43M | 9.6% | SCHEDULE 13D/A ↗ |
| Jun 26, 2025 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Estate of the late Khalid bin Abdullah bin Abdulrahman | 10.43M | 9.6% | SCHEDULE 13D/A ↗ |
| Jun 26, 2025 | SCHEDULE 13D/A (amended) | IRDM Iridium Communications Inc | Baralonco Limited | 10.43M | 9.6% | SCHEDULE 13D/A ↗ |
| Apr 23, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | BlackRock, Inc. | 10.47M | 9.6% | SCHEDULE 13G/A ↗ |
| Feb 5, 2025 | SCHEDULE 13G/A (amended) | IRDM Iridium Communications Inc | BlackRock, Inc. | 12.71M | 11.2% | SCHEDULE 13G/A ↗ |
39 items, most recent first (up to 50). Every row links to its original filing. Updated Nov 15, 2026, 6:00 PM EST.
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