Updated Jul 16, 2026 · Last SEC filing 2026-07-13
Iridium Communications Inc. (IRDM) has filed 18 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-13. 6 Form 8-K material event filings were reported by IRDM in the last 90 days. InsiderAlpha tracks every IRDM SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Communications Services, NEC (SIC 4899) |
|---|---|
| SEC CIK | 0001418819 |
| Form 4 filings (90d) | 18 |
|---|---|
| Form 8-K filings (90d) | 6 |
| Latest Form 4 filing | 2026-07-13 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Thoma Donald Lee | EVP, Aireon | A — Grant or award | 41.9K | $0.00 | — | SEC | |
| Sears Kay | Director | A — Grant or award | 30 | $0.00 | — | SEC | |
| FRAZIER LEON ANTHONY | Director | A — Grant or award | 93 | $0.00 | — | SEC | |
| Canfield Thomas C | Director | A — Grant or award | 639 | $0.00 | — | SEC | |
| Shivanandan Monique S. | Director | A — Grant or award | 44 | $0.00 | — | SEC | |
| YEANEY JACQUELINE E | Director | A — Grant or award | 30 | $0.00 | — | SEC | |
| Alterman Louis M | Director | A — Grant or award | 38 | $0.00 | — | SEC | |
| FITZPATRICK THOMAS | Director | A — Grant or award | 48 | $0.00 | — | SEC | |
| Olson Eric T | Director | A — Grant or award | 385 | $0.00 | — | SEC | |
| NIEHAUS ROBERT H | Director | A — Grant or award | 378 | $0.00 | — | SEC | |
| O'Neill Vincent James | Chief Financial Officer | F — Tax withholding / forfeiture | 1.5K | $51.78 | $76K | SEC | |
| Morgan Kathleen A. | Chief Legal Officer | F — Tax withholding / forfeiture | 2.1K | $51.78 | $106K | SEC | |
| DESCH MATTHEW J | Chief Executive Officer | F — Tax withholding / forfeiture | 9.6K | $51.78 | $496K | SEC | |
| McBride Suzanne E. | Chief Operations Officer | F — Tax withholding / forfeiture | 3.6K | $51.78 | $188K | SEC | |
| Scheimreif Scott | EVP-Government Programs | F — Tax withholding / forfeiture | 2.2K | $51.78 | $114K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Iridium Communications Inc. (IRDM). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Canfield Thomas C | 2 | — |
| Kapalka Timothy | 2 | $36K |
| NIEHAUS ROBERT H | 1 | — |
| YEANEY JACQUELINE E | 1 | — |
| FITZPATRICK THOMAS | 1 | — |
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in IRDM insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
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