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Iridium Communications Inc.
Iridium Communications (IRDM) has a market cap of US$5.2B as of Oct 2, 2026 close, #7 among listed space companies. How it is built
IRDM on Nasdaq · USA
Price · Nasdaq (IRDM)
as of Oct 2, 2026End of dayUS$48.95▲ +2.3%
Regular-session last sale across US venues on Oct 2, 2026, not the official closing auction price.
- Change
- ▲ +177.3%
- High
- US$55.705 Jul 1, 2026
- Low
- US$15.83 Nov 20, 2025
- Range
- Oct 1, 2025 to Oct 2, 2026 · 253 sessions
Regular-session last sales, as traded. Prices are not adjusted for share splits.
Iridium Communications's moves, plus the rest of the space sector, every week.
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What they do
as of Oct 3, 2026Iridium operates a constellation of 66 cross-linked low Earth orbit satellites that provides voice and data communications across the whole Earth, including maritime, aviation, Internet of Things and US government services. It is headquartered in McLean, Virginia. Its shares trade on Nasdaq as IRDM. On June 28, 2026, it agreed to be acquired by Rocket Lab; the merger proxy says the companies expect to complete the deal in mid-2027, subject to regulatory approvals.
Recent filings and events
as of Sep 24, 2026- 8-KItems 5.07, 8.01, 9.01 · SEC EDGARAI summaryOn September 24, 2026, Iridium Communications Inc. held a special stockholder meeting to vote on a proposed merger with Rocket Lab Corporation under a Merger Agreement dated June 28, 2026. Stockholders approved both the adoption of the Merger Agreement (85,862,105 votes for, 318,415 against, 67,862 abstained) and advisory approval of golden parachute compensation (74,461,703 for, 10,948,729 against, 837,950 abstained). The Mergers are expected to close in mid-2027, subject to satisfaction of remaining closing conditions including regulatory approvals.
- 425Form 425 · SEC EDGAR
- 8-KItem 8.01 · SEC EDGAR
- 144Notice of proposed sale · SEC EDGAR
- 425Form 425 · SEC EDGAR
- 8-KItems 1.01, 9.01 · SEC EDGARAI summaryOn September 15, 2026, Iridium Communications Inc. entered into Amendment No. 4 to its Amended and Restated Credit Agreement with lenders and Deutsche Bank AG New York Branch as administrative agent. The amendment provides that the proposed merger with Rocket Lab Corporation will not constitute a change of control under the credit agreement, allows the term loans to remain outstanding after the transaction closes, and establishes post-closing interest rate adjustments, a 1.00% prepayment premium for repricing transactions, and a 1.00% exit fee after the first anniversary of closing.
- 144Notice of proposed sale · SEC EDGAR
- 425Form 425 · SEC EDGAR
- DEFM14AForm DEFM14A · SEC EDGAR
- 425Form 425 · SEC EDGAR
Insider transactions (Form 4)
| Date | Reporting person | Transaction | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| Sep 15, 2026 | Last Timothy JamesEVP, Sales & Marketing | Open-market or private sale | −5,769 | US$46.35 | 84,130 | Form 4 filed Sep 16, 2026 |
| Sep 3, 2026 | Last Timothy JamesEVP, Sales & Marketing | Open-market or private sale | −2,013 | US$47.36 | 89,899 | Form 4 filed Sep 4, 2026 |
| Sep 1, 2026 | O'Neill Vincent JamesChief Financial Officer | Shares withheld for tax or exercise price | −1,461 | US$46.98 | 126,944 | Form 4 filed Sep 2, 2026 |
| Sep 1, 2026 | Kapalka TimothyCAO Iridium Satellite LLC | Shares withheld for tax or exercise price | −693 | US$46.98 | 35,038 | Form 4 filed Sep 2, 2026 |
| Sep 1, 2026 | Last Timothy JamesEVP, Sales & Marketing | Shares withheld for tax or exercise price | −1,501 | US$46.98 | 91,912 | Form 4 filed Sep 2, 2026 |
| Sep 1, 2026 | McBride Suzanne E.Director, Chief Operations Officer | Shares withheld for tax or exercise price | −3,623 | US$46.98 | 260,991 | Form 4 filed Sep 2, 2026 |
| Sep 1, 2026 | Scheimreif ScottEVP-Government Programs | Shares withheld for tax or exercise price | −2,207 | US$46.98 | 257,552 | Form 4 filed Sep 2, 2026 |
| Sep 1, 2026 | DESCH MATTHEW JDirector, Chief Executive Officer | Shares withheld for tax or exercise price | −9,583 | US$46.98 | 1,441,434 | Form 4 filed Sep 2, 2026 |
| Sep 1, 2026 | Morgan Kathleen A.Chief Legal Officer | Shares withheld for tax or exercise price | −2,053 | US$46.98 | 122,818 | Form 4 filed Sep 2, 2026 |
| Aug 20, 2026 | McBride Suzanne E.Director, Chief Operations Officer | Gift | −17,403 | US$0.00 | 264,614 | Form 4 filed Aug 21, 2026 |
Contract awards · last 12 months
No US federal contract award of US$250K or more on file for the last 12 months.
Upcoming events
Nothing on the manifest for Iridium Communications yet.
Peers
- AST SpaceMobileASTSUS$22.7B#3 · as of Oct 2, 2026 close
- GlobalstarGSATUS$10.8B#4 · as of Oct 2, 2026 close
- ViasatVSATUS$9.9B#5 · as of Oct 2, 2026 close
- TelesatTSATUS$2.5B#12 · as of Oct 2, 2026 close
- KVH IndustriesKVHIUS$127M#22 · as of Oct 2, 2026 close
Listings
| Ticker | Exchange | Currency | Share class | Role |
|---|---|---|---|---|
| IRDM | Nasdaq | USD | Common | Pricing listing |
How this market cap is built
as of Oct 2, 2026End of day- Shares outstanding
- 105,960,383 · every class, counted once · shares as of Jul 15, 2026 · from the 10-Q filed Jul 22, 2026
- Price
- US$48.95 · priced on Nasdaq (IRDM) · regular-session last sale on Oct 2, 2026
- Market cap
- US$5.2B = 105,960,383 shares × US$48.95
- In Canadian dollars
- C$7.4B · Bank of Canada rate for Oct 2, 2026: US$1 = C$1.4246
- On the list
- Number 7 of 24 pure plays with a computed market cap, 0.2% of their total. Satellite communications companies by market cap.
How this number is built: methodology. Where the data comes from: sources. Who runs this site and what they hold: disclosures. More: Satellite communications · leaderboard · space industry market cap.