IRDM · Insider trading · 13F holders · Congress trades
Iridium Communications Inc. (IRDM)
Who is buying and selling IRDM: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 9
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $19.6M
- Congress trades, 12 months
- 0
IRDM at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 6 IRDM insiders filed 8 sales worth $19.6M on SEC Form 4, and no open-market purchases.
- 9 13F filers hold IRDM among their 50 largest positions, worth $215.0M combined, including Joel Greenblatt. The biggest bets by portfolio weight are Robertson Opportunity Capital, LLC (5.3%), ArchPoint Investors (2.7%) and IFS Group,LLC (1.3%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
- No member of Congress has disclosed a trade in IRDM.
- IRDM last closed at $46.05 on Oct 29, 2026.
IRDM insider trading
Between Aug 1, 2026 and Oct 29, 2026, 6 IRDM insiders filed 8 sales worth $19.6M on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Sep 16, 2026 | Last Timothy James | EVP, Sales & Marketing | Sale | 5,769 | $46.35 | $267K | SEC |
| Sep 4, 2026 | Last Timothy James | EVP, Sales & Marketing | Sale | 2,013 | $47.36 | $95K | SEC |
| Aug 19, 2026 | Fitzpatrick Thomas | Director | Sale | 224,279 | $50.15 | $11.2M | SEC |
| Aug 19, 2026 | McBride Suzanne E. | Chief Operations Officer, Director | Sale | 85,454 | $50.28 | $4.3M | SEC |
| Aug 19, 2026 | Morgan Kathleen A. | Chief Legal Officer | Sale | 33,192 | $50.35 | $1.7M | SEC |
| Aug 19, 2026 | Last Timothy James | EVP, Sales & Marketing | Sale | 19,521 | $50.34 | $983K | SEC |
| Aug 19, 2026 | Kapalka Timothy | CAO Iridium Satellite LLC | Sale | 13,473 | $50.51 | $681K | SEC |
| Aug 19, 2026 | Olson Eric T | Director | Sale | 8,000 | $50.61 | $405K | SEC |
Who owns IRDM? Hedge funds and superinvestors
9 13F filers hold IRDM among their 50 largest positions, worth $215.0M combined, including Joel Greenblatt. The biggest bets by portfolio weight are Robertson Opportunity Capital, LLC (5.3%), ArchPoint Investors (2.7%) and IFS Group,LLC (1.3%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
Superinvestors holding IRDM: Joel Greenblatt 0.3%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Joel GreenblattHedge fund | 0.3% | $137.9M | 2,514,317 | -25.0% shares | Q2 2026 |
| CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENTHedge fund | 0.9% | $20.0M | 416,500 | +76.5% shares | Q3 2026 |
| Alpine Associates Management Inc.Hedge fund | 1.0% | $15.9M | 289,700 | — | Q2 2026 |
| Robertson Opportunity Capital, LLCHedge fund | 5.3% | $13.7M | 250,346 | -12.9% shares | Q2 2026 |
| ArchPoint InvestorsWealth manager | 2.7% | $12.7M | 230,796 | +17.1% shares | Q2 2026 |
| Premier Fund Managers LtdHedge fund | 1.0% | $11.3M | 206,371 | — | Q2 2026 |
| Redwood Investment Management, LLCMutual fund manager | 0.2% | $2.3M | 41,295 | — | Q2 2026 |
| IFS Group,LLCWealth manager | 1.3% | $929K | 16,938 | — | Q2 2026 |
| nVerses Capital, LLCHedge fund | 0.6% | $380K | 6,923 | — | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 8). Screen IRDM in the grand portfolio →
IRDM stock trades by members of Congress
No member of Congress has disclosed a trade in IRDM.
IRDM questions and answers
Are insiders buying IRDM stock?
Between Aug 1, 2026 and Oct 29, 2026, 6 IRDM insiders filed 8 sales worth $19.6M on SEC Form 4, and no open-market purchases.
Which hedge funds own IRDM?
9 13F filers hold IRDM among their 50 largest positions, worth $215.0M combined, including Joel Greenblatt. The biggest bets by portfolio weight are Robertson Opportunity Capital, LLC (5.3%), ArchPoint Investors (2.7%) and IFS Group,LLC (1.3%). In their latest 13Fs, 0 managers opened a new position and 2 added to one.
Has Congress traded IRDM?
No member of Congress has disclosed a trade in IRDM.
Who is the largest holder of IRDM?
Among 13F filers, Joel Greenblatt reports the largest IRDM position, $137.9M (2,514,317 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Robertson Opportunity Capital, LLC's: 5.3% of its portfolio.
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