SEC Form 4 · Updated Daily
IRDM
— IRIDIUM COMMUNICATIONS INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| bin Abdullah bin Abdulrahman Khalid | 10%+ Owner | 13,099,230 | 2021-08-24 | S |
| Baralonco Ltd | 10%+ Owner | 13,099,230 | 2021-08-24 | S |
| GREENHILL & CO INC | Reporting Owner | 1,813,387 | 2013-05-09 | S |
| DESCH MATTHEW J | Director · Officer | 1,398,634 | 2026-10-22 | G |
| BOK SCOTT L | Director | 1,206,789.5 | 2013-01-04 | A |
| JONES TERRY L | Director | 585,373 | 2012-01-05 | A |
| Krongard A B | Director | 366,541.9 | 2026-03-31 | A |
| Ewert Gregory C. | Officer | 290,092 | 2012-03-01 | A |
| Morrison Eric Henry | Officer | 280,218 | 2009-09-29 | P |
| McBride Suzanne E. | Director | 260,991 | 2026-09-01 | F |
| Scheimreif Scott | Officer | 257,552 | 2026-09-01 | F |
| Smith S. Scott | Director · Officer | 240,764 | 2019-03-04 | A |
| Canfield Thomas C | Director | 235,027.8 | 2026-09-30 | A |
| Rush Parker William | Director | 168,811.6 | 2023-12-29 | A |
| Olson Eric T | Director | 150,121.9 | 2026-09-30 | A |
| Hickey Thomas D | Officer | 146,286 | 2021-12-01 | F |
| O'Neill Vincent James | Officer | 126,944 | 2026-09-01 | F |
| Morgan Kathleen A. | Officer | 122,818 | 2026-09-01 | F |
| PFEIFFER STEVEN B | Director | 111,487 | 2022-03-08 | S |
| Hartin Bryan J. | Officer | 94,928 | 2024-12-19 | F |
| Last Timothy James | Officer | 84,130 | 2026-09-15 | S |
| Dawkins Peter | Director | 73,022.2 | 2015-01-06 | A |
| Nyren Richard P | Officer | 69,575 | 2017-06-01 | F |
| Barros J. Darrel | Director | 62,523.6 | 2014-01-06 | A |
| Harman Jane L. | Director | 60,817.6 | 2024-03-29 | A |
| WEST BARRY | Director | 52,547.2 | 2023-03-30 | A |
| Schliemann Henrik O. | Director | 51,284.7 | 2023-03-30 | A |
| FRAZIER LEON ANTHONY | Director | 46,610.5 | 2026-09-30 | A |
| Clarke Kevin P | Director | 43,479 | 2008-03-27 | J |
| NIEHAUS ROBERT H | Director | 43,315.3 | 2026-09-30 | A |
| FITZPATRICK THOMAS | Director | 43,315.3 | 2026-09-30 | A |
| Thoma Donald Lee | Officer | 41,949 | 2026-07-10 | A |
| Kapalka Timothy | Officer | 35,038 | 2026-09-01 | F |
| Campbell John Howard | Officer | 34,985 | 2012-03-01 | A |
| LIU JOHN D | Director | 32,500 | 2008-02-21 | P |
| Sears Kay | Director | 30,148.1 | 2026-09-30 | A |
| YEANEY JACQUELINE E | Director | 25,373.8 | 2026-09-30 | A |
| Shivanandan Monique S. | Director | 15,988.7 | 2026-09-30 | A |
| RODRIGUEZ HAROLD J JR | Officer | 15,000 | 2008-03-14 | — |
| Alterman Louis M | Director | 13,853.1 | 2026-09-30 | A |
| Roddy John Michael | Officer | 10,881 | 2013-06-03 | S |
| Cann Cynthia Cammett | Officer | 0 | 2009-09-29 | — |
| Demitry Lee F | Officer | 0 | 2009-09-29 | — |
| Brunette John S. | Officer | 0 | 2009-09-29 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-22 | DESCH MATTHEW J | Gift | 42,800 | $0.00 | 1,398,634 |
| 2026-09-30 | Olson Eric T | Grant / award | 441.8 | $0.00 | 150,121.9 |
| 2026-09-30 | FITZPATRICK THOMAS | Grant / award | 55.7 | $0.00 | 43,315.3 |
| 2026-09-30 | Canfield Thomas C | Grant / award | 733.7 | $0.00 | 235,027.8 |
| 2026-09-30 | NIEHAUS ROBERT H | Grant / award | 55.7 | $0.00 | 43,315.3 |
| 2026-09-30 | Shivanandan Monique S. | Grant / award | 49.9 | $0.00 | 15,988.7 |
| 2026-09-30 | Alterman Louis M | Grant / award | 43.3 | $0.00 | 13,853.1 |
| 2026-09-30 | Sears Kay | Grant / award | 34.2 | $0.00 | 30,148.1 |
| 2026-09-30 | YEANEY JACQUELINE E | Grant / award | 34.2 | $0.00 | 25,373.8 |
| 2026-09-30 | FRAZIER LEON ANTHONY | Grant / award | 106.5 | $0.00 | 46,610.5 |
| 2026-09-15 | Last Timothy James | Open-market sale | 5,769 | $46.35 | 84,130 |
| 2026-09-03 | Last Timothy James | Open-market sale | 2,013 | $47.36 | 89,899 |
| 2026-09-01 | Morgan Kathleen A. | Tax withholding | 2,053 | $46.98 | 122,818 |
| 2026-09-01 | DESCH MATTHEW J | Tax withholding | 9,583 | $46.98 | 1,441,434 |
| 2026-09-01 | Scheimreif Scott | Tax withholding | 2,207 | $46.98 | 257,552 |
| 2026-09-01 | McBride Suzanne E. | Tax withholding | 3,623 | $46.98 | 260,991 |
| 2026-09-01 | Last Timothy James | Tax withholding | 1,501 | $46.98 | 91,912 |
| 2026-09-01 | Kapalka Timothy | Tax withholding | 693 | $46.98 | 35,038 |
| 2026-09-01 | O'Neill Vincent James | Tax withholding | 1,461 | $46.98 | 126,944 |
| 2026-08-20 | McBride Suzanne E. | Gift | 17,403 | $0.00 | 264,614 |
| 2026-08-18 | FITZPATRICK THOMAS | Open-market sale | 15,046 | $49.20 | 43,259.6 |
| 2026-08-17 | NIEHAUS ROBERT H | Gift | 50,000 | $0.00 | 266,910.2 |
| 2026-08-17 | Olson Eric T | Open-market sale | 8,000 | $50.61 | 149,680.1 |
| 2026-08-17 | Morgan Kathleen A. | Open-market sale | 544 | $50.85 | 124,871 |
| 2026-08-17 | Morgan Kathleen A. | Open-market sale | 32,648 | $50.34 | 125,415 |
| 2026-08-17 | McBride Suzanne E. | Open-market sale | 85,454 | $50.28 | 282,017 |
| 2026-08-17 | Kapalka Timothy | Open-market sale | 13,473 | $50.51 | 35,731 |
| 2026-08-17 | Last Timothy James | Open-market sale | 500 | $50.88 | 93,413 |
| 2026-08-17 | Last Timothy James | Open-market sale | 19,021 | $50.33 | 93,913 |
| 2026-08-17 | FITZPATRICK THOMAS | Open-market sale | 209,233 | $50.22 | 58,305.6 |
| 2026-07-10 | Thoma Donald Lee | Grant / award | 41,949 | $0.00 | 41,949 |
| 2026-07-02 | Thoma Donald Lee | — | — | — | 8,228 |
| 2026-06-30 | Canfield Thomas C | Grant / award | 639 | $0.00 | 234,294.1 |
| 2026-06-30 | Alterman Louis M | Grant / award | 37.7 | $0.00 | 13,809.8 |
| 2026-06-30 | FITZPATRICK THOMAS | Grant / award | 48.5 | $0.00 | 267,538.6 |
| 2026-06-30 | FRAZIER LEON ANTHONY | Grant / award | 92.7 | $0.00 | 46,504 |
| 2026-06-30 | NIEHAUS ROBERT H | Grant / award | 377.7 | $0.00 | 316,910.2 |
| 2026-06-30 | Olson Eric T | Grant / award | 384.8 | $0.00 | 157,680.1 |
| 2026-06-30 | Sears Kay | Grant / award | 29.8 | $0.00 | 30,113.9 |
| 2026-06-30 | Shivanandan Monique S. | Grant / award | 43.5 | $0.00 | 15,938.8 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.