Iridium Communications (IRDM)
Iridium Communications on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as communications services, nec.
2.9M
Short interest
settlement 2026-10-15
2.9
Days to cover
+0.4 days vs prior
37.7%
Short share of volume
2026-10-28
1,696
Fails to deliver
settlement 2026-09-30
Thu 11 Feb
Next earnings
estimated date
-$19.6M
Insider flow, 90 days
0 buys, 11 sells
As of 2026-10-28.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in IRDM is 2,935,902 shares, down 464,662 shares over the last month. Over the last 48 readings it ranged from 2,559,792 shares (31 August 2026) to 12,778,472 shares (15 September 2025). The latest reading sits at the bottom of that range. At the reported average volume of 1.0M shares a day that is 2.9 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 2,935,902 | -12.8% | 1,028,020 | 2.86 |
| 2026-09-30 | 3,368,663 | -0.9% | 1,371,156 | 2.46 |
| 2026-09-15 | 3,400,564 | +32.9% | 715,197 | 4.75 |
| 2026-08-31 | 2,559,792 | -10.9% | 929,266 | 2.75 |
| 2026-08-14 | 2,872,219 | -16.9% | 1,015,208 | 2.83 |
| 2026-07-31 | 3,457,705 | +22.4% | 1,564,086 | 2.21 |
| 2026-07-15 | 2,826,191 | -35.3% | 2,225,094 | 1.27 |
| 2026-06-30 | 4,367,799 | -54.0% | 4,207,739 | 1.04 |
| 2026-06-15 | 9,488,045 | +67.9% | 2,787,267 | 3.40 |
| 2026-05-29 | 5,651,026 | -0.3% | 2,282,898 | 2.48 |
| 2026-05-15 | 5,669,943 | +4.6% | 1,929,826 | 2.94 |
| 2026-04-30 | 5,421,453 | -0.3% | 3,108,543 | 1.74 |
| 2026-04-15 | 5,435,337 | -0.4% | 2,479,168 | 2.19 |
| 2026-03-31 | 5,456,818 | -24.3% | 2,156,311 | 2.53 |
| 2026-03-13 | 7,208,131 | +2.9% | 1,867,272 | 3.86 |
| 2026-02-27 | 7,003,160 | -20.6% | 1,644,109 | 4.26 |
| 2026-02-13 | 8,818,552 | -3.5% | 2,849,282 | 3.10 |
| 2026-01-30 | 9,140,427 | -10.0% | 2,668,339 | 3.43 |
| 2026-01-15 | 10,160,860 | -0.1% | 1,782,261 | 5.70 |
| 2025-12-31 | 10,170,431 | +9.9% | 3,167,775 | 3.21 |
| 2025-12-15 | 9,257,674 | +11.9% | 2,485,589 | 3.72 |
| 2025-11-28 | 8,269,749 | -12.2% | 1,435,708 | 5.76 |
| 2025-11-14 | 9,417,379 | -0.8% | 2,135,809 | 4.41 |
| 2025-10-31 | 9,489,072 | -3.5% | 3,513,378 | 2.70 |
| 2025-10-15 | 9,831,317 | -4.9% | 2,404,320 | 4.09 |
| 2025-09-30 | 10,340,159 | -19.1% | 3,054,613 | 3.39 |
| 2025-09-15 | 12,778,472 | +47.3% | 4,749,801 | 2.69 |
| 2025-08-29 | 8,672,561 | -1.3% | 1,470,054 | 5.90 |
| 2025-08-15 | 8,783,898 | +9.2% | 1,546,060 | 5.68 |
| 2025-07-31 | 8,042,435 | +6.6% | 2,603,291 | 3.09 |
| 2025-07-15 | 7,544,509 | -1.1% | 1,131,113 | 6.67 |
| 2025-06-30 | 7,628,569 | -34.8% | 1,350,574 | 5.65 |
| 2025-06-13 | 11,705,962 | +54.2% | 1,081,670 | 10.82 |
| 2025-05-30 | 7,592,252 | -1.9% | 921,291 | 8.24 |
| 2025-05-15 | 7,738,456 | +0.4% | 1,198,522 | 6.46 |
| 2025-04-30 | 7,710,873 | -12.5% | 1,989,292 | 3.88 |
| 2025-04-15 | 8,815,650 | -5.6% | 1,234,454 | 7.14 |
| 2025-03-31 | 9,335,025 | -25.4% | 1,403,065 | 6.65 |
| 2025-03-14 | 12,514,030 | +22.2% | 1,377,972 | 9.08 |
| 2025-02-28 | 10,238,556 | +7.8% | 1,402,099 | 7.30 |
| 2025-02-14 | 9,495,056 | +12.6% | 1,605,327 | 5.91 |
| 2025-01-31 | 8,432,802 | +2.5% | 1,007,754 | 8.37 |
| 2025-01-15 | 8,227,954 | +3.0% | 694,473 | 11.85 |
| 2024-12-31 | 7,989,466 | -7.6% | 917,812 | 8.70 |
| 2024-12-13 | 8,643,284 | +12.3% | 919,784 | 9.40 |
| 2024-11-29 | 7,700,117 | -1.3% | 1,071,457 | 7.19 |
| 2024-11-15 | 7,803,002 | +10.6% | 974,970 | 8.00 |
| 2024-10-31 | 7,053,202 | +6.3% | 1,529,018 | 4.61 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of IRDM volume is 37.7%, down 14.3 points over the last five sessions. Over the last 30 readings it ranged from 25.3% (15 October 2026) to 70.6% (12 October 2026). The latest reading is 14.2 points below the 30-session average of 51.9%, on 154K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 58K | 154K | 37.7% | 0 |
| 2026-10-27 | 77K | 200K | 38.7% | 12 |
| 2026-10-26 | 95K | 188K | 50.7% | 3 |
| 2026-10-23 | 125K | 248K | 50.5% | 1 |
| 2026-10-22 | 164K | 324K | 50.5% | 244 |
| 2026-10-21 | 202K | 387K | 52.1% | 9,013 |
| 2026-10-20 | 161K | 306K | 52.8% | 153 |
| 2026-10-19 | 134K | 264K | 50.5% | 8 |
| 2026-10-16 | 173K | 324K | 53.5% | 17 |
| 2026-10-15 | 309K | 1.2M | 25.3% | 202 |
| 2026-10-14 | 160K | 386K | 41.6% | 0 |
| 2026-10-13 | 170K | 476K | 35.7% | 0 |
| 2026-10-12 | 223K | 316K | 70.6% | 0 |
| 2026-10-09 | 195K | 341K | 57.2% | 31,146 |
| 2026-10-08 | 393K | 592K | 66.3% | 97,154 |
| 2026-10-07 | 228K | 353K | 64.5% | 448 |
| 2026-10-06 | 213K | 422K | 50.6% | 10 |
| 2026-10-05 | 182K | 303K | 60.2% | 0 |
| 2026-10-02 | 260K | 487K | 53.3% | 0 |
| 2026-10-01 | 173K | 331K | 52.3% | 0 |
| 2026-09-30 | 162K | 271K | 59.8% | 200 |
| 2026-09-29 | 274K | 391K | 70.1% | 0 |
| 2026-09-28 | 211K | 312K | 67.7% | 1,434 |
| 2026-09-25 | 315K | 665K | 47.4% | 195 |
| 2026-09-24 | 114K | 198K | 57.5% | 0 |
| 2026-09-23 | 93K | 174K | 53.5% | 542 |
| 2026-09-22 | 223K | 454K | 49.2% | 52 |
| 2026-09-21 | 202K | 793K | 25.5% | 10 |
| 2026-09-18 | 277K | 444K | 62.4% | 102 |
| 2026-09-17 | 251K | 499K | 50.4% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 30 September 2026, the fails-to-deliver balance in IRDM is 1,696 shares, up 1,668 shares over the last settlement date. Over the last 30 readings it ranged from 1 share (22 April 2026) to 9,565,355 shares (29 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-30 | 1,696 | $47.94 | $81K |
| 2026-09-28 | 28 | $48.75 | $1K |
| 2026-09-22 | 12 | $48.21 | $579 |
| 2026-09-02 | 113 | $46.72 | $5K |
| 2026-08-20 | 6 | $48.71 | $292 |
| 2026-08-07 | 77 | $48.31 | $4K |
| 2026-08-05 | 20 | $49.61 | $992 |
| 2026-07-20 | 596 | $46.68 | $28K |
| 2026-07-06 | 70,621 | $53.75 | $3.8M |
| 2026-07-01 | 126,797 | $54.85 | $7.0M |
| 2026-06-30 | 1,284 | $54.59 | $70K |
| 2026-06-29 | 9,565,355 | $43.52 | $416.3M |
| 2026-06-25 | 18 | $42.28 | $761 |
| 2026-06-15 | 390 | $47.32 | $18K |
| 2026-06-12 | 2,389 | $49.91 | $119K |
| 2026-06-09 | 237 | $47.48 | $11K |
| 2026-06-08 | 93,863 | $47.36 | $4.4M |
| 2026-06-05 | 93,863 | $52.07 | $4.9M |
| 2026-06-03 | 68 | $49.60 | $3K |
| 2026-05-19 | 297 | $43.40 | $13K |
| 2026-05-18 | 1,888 | $41.62 | $79K |
| 2026-05-08 | 60 | $40.19 | $2K |
| 2026-05-06 | 1,243 | $39.23 | $49K |
| 2026-04-30 | 3,570 | $36.39 | $130K |
| 2026-04-22 | 1 | $42.93 | $43 |
| 2026-04-20 | 4,602 | $41.85 | $193K |
| 2026-04-09 | 4,784 | $34.62 | $166K |
| 2026-04-07 | 37 | $32.79 | $1K |
| 2026-04-06 | 2,656 | $32.86 | $87K |
| 2026-04-02 | 5 | $28.52 | $143 |
Insider trades
SEC Form 4, newest first. JSONInsiders at IRDM reported 11 open-market sells worth $19.6M in the last 90 days and no open-market buys. Latest filing: DESCH MATTHEW J (Chief Executive Officer) on 2026-10-22.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-22 | DESCH MATTHEW J | Chief Executive Officer | Gift | 43K | $0.00 | $0 | 1.4M |
| 2026-09-30 | YEANEY JACQUELINE E | Director | Grant | 34 | $0.00 | $0 | 25K |
| 2026-09-30 | Sears Kay | Director | Grant | 34 | $0.00 | $0 | 30K |
| 2026-09-30 | Olson Eric T | Director | Grant | 442 | $0.00 | $0 | 150K |
| 2026-09-30 | FRAZIER LEON ANTHONY | Director | Grant | 107 | $0.00 | $0 | 47K |
| 2026-09-30 | FITZPATRICK THOMAS | Director | Grant | 56 | $0.00 | $0 | 43K |
| 2026-09-30 | Alterman Louis M | Director | Grant | 43 | $0.00 | $0 | 14K |
| 2026-09-30 | Canfield Thomas C | Director | Grant | 734 | $0.00 | $0 | 235K |
| 2026-09-30 | NIEHAUS ROBERT H | Director | Grant | 56 | $0.00 | $0 | 43K |
| 2026-09-30 | Shivanandan Monique S. | Director | Grant | 50 | $0.00 | $0 | 16K |
| 2026-09-15 | Last Timothy James | EVP, Sales & Marketing | Sell | 6K | $46.35 | $267K | 84K |
| 2026-09-03 | Last Timothy James | EVP, Sales & Marketing | Sell | 2K | $47.36 | $95K | 90K |
| 2026-09-01 | O'Neill Vincent James | Chief Financial Officer | Tax withholding | 1K | $46.98 | $69K | 127K |
| 2026-09-01 | Kapalka Timothy | CAO Iridium Satellite LLC | Tax withholding | 693 | $46.98 | $33K | 35K |
| 2026-09-01 | Last Timothy James | EVP, Sales & Marketing | Tax withholding | 2K | $46.98 | $71K | 92K |
| 2026-09-01 | McBride Suzanne E. | Chief Operations Officer | Tax withholding | 4K | $46.98 | $170K | 261K |
| 2026-09-01 | Scheimreif Scott | EVP-Government Programs | Tax withholding | 2K | $46.98 | $104K | 258K |
| 2026-09-01 | Morgan Kathleen A. | Chief Legal Officer | Tax withholding | 2K | $46.98 | $96K | 123K |
| 2026-09-01 | DESCH MATTHEW J | Chief Executive Officer | Tax withholding | 10K | $46.98 | $450K | 1.4M |
| 2026-08-20 | McBride Suzanne E. | Chief Operations Officer | Gift | 17K | $0.00 | $0 | 265K |
| 2026-08-18 | FITZPATRICK THOMAS | Director | Sell | 15K | $49.20 | $740K | 43K |
| 2026-08-17 | Last Timothy James | EVP, Sales & Marketing | Sell | 500 | $50.88 | $25K | 93K |
| 2026-08-17 | Last Timothy James | EVP, Sales & Marketing | Sell | 19K | $50.33 | $957K | 94K |
| 2026-08-17 | Kapalka Timothy | CAO Iridium Satellite LLC | Sell | 13K | $50.51 | $681K | 36K |
| 2026-08-17 | McBride Suzanne E. | Chief Operations Officer | Sell | 85K | $50.28 | $4.3M | 282K |
| 2026-08-17 | Morgan Kathleen A. | Chief Legal Officer | Sell | 544 | $50.85 | $28K | 125K |
| 2026-08-17 | Morgan Kathleen A. | Chief Legal Officer | Sell | 33K | $50.34 | $1.6M | 125K |
| 2026-08-17 | Olson Eric T | Director | Sell | 8K | $50.61 | $405K | 150K |
| 2026-08-17 | NIEHAUS ROBERT H | Director | Gift | 50K | $0.00 | $0 | 267K |
| 2026-08-17 | FITZPATRICK THOMAS | Director | Sell | 209K | $50.22 | $10.5M | 58K |
| 2026-07-10 | Thoma Donald Lee | EVP, Aireon | Grant | 42K | $0.00 | $0 | 42K |
| 2026-06-30 | YEANEY JACQUELINE E | Director | Grant | 30 | $0.00 | $0 | 25K |
| 2026-06-30 | Shivanandan Monique S. | Director | Grant | 44 | $0.00 | $0 | 16K |
| 2026-06-30 | Sears Kay | Director | Grant | 30 | $0.00 | $0 | 30K |
| 2026-06-30 | Olson Eric T | Director | Grant | 385 | $0.00 | $0 | 158K |
| 2026-06-30 | NIEHAUS ROBERT H | Director | Grant | 378 | $0.00 | $0 | 317K |
| 2026-06-30 | FRAZIER LEON ANTHONY | Director | Grant | 93 | $0.00 | $0 | 47K |
| 2026-06-30 | FITZPATRICK THOMAS | Director | Grant | 49 | $0.00 | $0 | 268K |
| 2026-06-30 | Canfield Thomas C | Director | Grant | 639 | $0.00 | $0 | 234K |
| 2026-06-30 | Alterman Louis M | Director | Grant | 38 | $0.00 | $0 | 14K |
| 2026-06-01 | O'Neill Vincent James | Chief Financial Officer | Tax withholding | 1K | $51.78 | $76K | 128K |
| 2026-06-01 | Kapalka Timothy | CAO Iridium Satellite LLC | Grant | 4K | $0.00 | $0 | 49K |
| 2026-06-01 | Kapalka Timothy | CAO Iridium Satellite LLC | Tax withholding | 692 | $51.78 | $36K | 45K |
| 2026-06-01 | Last Timothy James | EVP, Sales & Marketing | Tax withholding | 1K | $51.78 | $78K | 113K |
| 2026-06-01 | Scheimreif Scott | EVP-Government Programs | Tax withholding | 2K | $51.78 | $114K | 260K |
| 2026-06-01 | Morgan Kathleen A. | Chief Legal Officer | Tax withholding | 2K | $51.78 | $106K | 158K |
| 2026-06-01 | McBride Suzanne E. | Chief Operations Officer | Tax withholding | 4K | $51.78 | $188K | 367K |
| 2026-06-01 | DESCH MATTHEW J | Chief Executive Officer | Tax withholding | 10K | $51.78 | $496K | 1.5M |
| 2026-05-20 | Canfield Thomas C | Director | Returned to company | 136 | $0.00 | $0 | 234K |
| 2026-04-06 | Kapalka Timothy | CAO Iridium Satellite LLC | Sell | 2K | $33.00 | $67K | 46K |
| 2026-04-02 | Kapalka Timothy | CAO Iridium Satellite LLC | Sell | 4K | $31.00 | $117K | 48K |
| 2026-03-31 | Shivanandan Monique S. | Director | Grant | 86 | $0.00 | $0 | 16K |
| 2026-03-31 | YEANEY JACQUELINE E | Director | Grant | 59 | $0.00 | $0 | 25K |
| 2026-03-31 | Sears Kay | Director | Grant | 59 | $0.00 | $0 | 30K |
| 2026-03-31 | Olson Eric T | Director | Grant | 757 | $0.00 | $0 | 157K |
| 2026-03-31 | Krongard A B | Director | Grant | 640 | $0.00 | $0 | 367K |
| 2026-03-31 | NIEHAUS ROBERT H | Director | Grant | 743 | $0.00 | $0 | 317K |
| 2026-03-31 | FRAZIER LEON ANTHONY | Director | Grant | 182 | $0.00 | $0 | 46K |
| 2026-03-31 | FITZPATRICK THOMAS | Director | Grant | 95 | $0.00 | $0 | 267K |
| 2026-03-31 | Canfield Thomas C | Director | Grant | 1K | $0.00 | $0 | 234K |
| 2026-03-31 | Alterman Louis M | Director | Grant | 74 | $0.00 | $0 | 14K |
| 2026-03-09 | O'Neill Vincent James | Chief Financial Officer | Tax withholding | 3K | $24.01 | $60K | 130K |
| 2026-03-09 | McBride Suzanne E. | Chief Operations Officer | Tax withholding | 3K | $24.01 | $74K | 371K |
| 2026-03-09 | Scheimreif Scott | EVP-Government Programs | Tax withholding | 2K | $24.01 | $58K | 262K |
| 2026-03-09 | Last Timothy James | EVP, Sales & Marketing | Tax withholding | 2K | $24.01 | $56K | 114K |
| 2026-03-09 | Morgan Kathleen A. | Chief Legal Officer | Tax withholding | 2K | $24.01 | $53K | 160K |
| 2026-03-09 | Kapalka Timothy | CAO Iridium Satellite LLC | Tax withholding | 744 | $24.01 | $18K | 52K |
| 2026-03-09 | DESCH MATTHEW J | Chief Executive Officer | Tax withholding | 9K | $24.01 | $210K | 1.5M |
| 2026-03-01 | Scheimreif Scott | EVP-GOVERNMENT PROGRAMS | Tax withholding | 13K | $22.49 | $283K | 264K |
| 2026-03-01 | Scheimreif Scott | EVP-GOVERNMENT PROGRAMS | Grant | 67K | $0.00 | $0 | 277K |
| 2026-03-01 | Morgan Kathleen A. | CHIEF LEGAL OFFICER | Tax withholding | 11K | $22.49 | $254K | 162K |
| 2026-03-01 | Morgan Kathleen A. | CHIEF LEGAL OFFICER | Grant | 71K | $0.00 | $0 | 174K |
| 2026-03-01 | McBride Suzanne E. | CHIEF OPERATIONS OFFICER | Tax withholding | 20K | $22.49 | $461K | 374K |
| 2026-03-01 | McBride Suzanne E. | CHIEF OPERATIONS OFFICER | Grant | 134K | $0.00 | $0 | 395K |
| 2026-03-01 | O'Neill Vincent James | Chief Financial Officer | Tax withholding | 4K | $22.49 | $82K | 132K |
| 2026-03-01 | O'Neill Vincent James | Chief Financial Officer | Grant | 84K | $0.00 | $0 | 136K |
| 2026-03-01 | Kapalka Timothy | CAO IRIDIUM SATELLITE LLC | Tax withholding | 2K | $22.49 | $42K | 52K |
| 2026-03-01 | Kapalka Timothy | CAO IRIDIUM SATELLITE LLC | Grant | 14K | $0.00 | $0 | 54K |
| 2026-03-01 | Last Timothy James | EVP, Sales & Marketing | Tax withholding | 4K | $22.49 | $87K | 117K |
| 2026-03-01 | Last Timothy James | EVP, Sales & Marketing | Grant | 67K | $0.00 | $0 | 121K |
| 2026-03-01 | FITZPATRICK THOMAS | Director | Tax withholding | 9K | $22.49 | $197K | 267K |
| 2026-03-01 | DESCH MATTHEW J | CHIEF EXECUTIVE OFFICER | Tax withholding | 53K | $22.49 | $1.2M | 1.5M |
| 2026-03-01 | DESCH MATTHEW J | CHIEF EXECUTIVE OFFICER | Grant | 292K | $0.00 | $0 | 1.5M |
| 2026-02-26 | Scheimreif Scott | EVP-GOVERNMENT PROGRAMS | Grant | 21K | $0.00 | $0 | 210K |
| 2026-02-26 | Scheimreif Scott | EVP-GOVERNMENT PROGRAMS | Grant | 5K | $0.00 | $0 | 190K |
| 2026-02-26 | Morgan Kathleen A. | CHIEF LEGAL OFFICER | Grant | 21K | $0.00 | $0 | 103K |
| 2026-02-26 | Morgan Kathleen A. | CHIEF LEGAL OFFICER | Grant | 5K | $0.00 | $0 | 82K |
| 2026-02-26 | McBride Suzanne E. | CHIEF OPERATIONS OFFICER | Grant | 34K | $0.00 | $0 | 261K |
| 2026-02-26 | McBride Suzanne E. | CHIEF OPERATIONS OFFICER | Grant | 7K | $0.00 | $0 | 227K |
| 2026-02-26 | O'Neill Vincent James | Chief Financial Officer | Grant | 5K | $0.00 | $0 | 53K |
| 2026-02-26 | Kapalka Timothy | CAO IRIDIUM SATELLITE LLC | Grant | 2K | $0.00 | $0 | 41K |
| 2026-02-26 | Last Timothy James | EVP, Sales & Marketing | Grant | 5K | $0.00 | $0 | 54K |
| 2026-02-26 | FITZPATRICK THOMAS | Director | Grant | 34K | $0.00 | $0 | 276K |
| 2026-02-26 | DESCH MATTHEW J | CHIEF EXECUTIVE OFFICER | Grant | 96K | $0.00 | $0 | 1.2M |
| 2026-02-26 | DESCH MATTHEW J | CHIEF EXECUTIVE OFFICER | Grant | 19K | $0.00 | $0 | 1.1M |
| 2026-01-06 | Shivanandan Monique S. | Director | Grant | 11K | $0.00 | $0 | 16K |
| 2026-01-06 | Krongard A B | Director | Grant | 15K | $0.00 | $0 | 366K |
| 2026-01-06 | NIEHAUS ROBERT H | Director | Grant | 17K | $0.00 | $0 | 316K |
| 2026-01-06 | Olson Eric T | Director | Grant | 12K | $0.00 | $0 | 157K |
| 2026-01-06 | Sears Kay | Director | Grant | 11K | $0.00 | $0 | 30K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON11 Form 144 notices on file for IRDM worth $19.5M at the prices reported; 8 in the last 90 days worth $19.0M. Latest: TIMOTHY J LAST filed on 2026-09-15 to sell 5,769 shares ($267K) from 2026-09-15.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-09-15 | TIMOTHY J LASTOfficer | 6K | $267K | 0.005% | 2026-09-15 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-09-03 | TIMOTHY J LASTOfficer | 2K | $95K | 0.002% | 2026-09-03 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-18 | FITZPATRICK THOMASDirector | 15K | $746K | 0.014% | 2026-08-18 | The Charles Schwab Corporation |
| 2026-08-17 | SUZANNE MCBRIDEOfficer, Director | 85K | $4.3M | 0.081% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | ERIC T OLSONDirector | 8K | $405K | 0.008% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | TIMOTHY J LASTOfficer | 20K | $983K | 0.018% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | KATHLEEN MORGANOfficer | 33K | $1.7M | 0.031% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2026-08-17 | THOMAS FITZPATRICKDirector | 209K | $10.5M | 0.197% | 2026-08-17 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-31 | THOMAS FITZPATRICKDirector | 21K | $375K | 0.020% | 2025-10-31 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-28 | THOMAS FITZPATRICKDirector | 7K | $122K | 0.006% | 2025-10-28 | Morgan Stanley Smith Barney LLC Executive Financial Services |
| 2025-10-27 | THOMAS FITZPATRICKDirector | 3K | $60K | 0.003% | 2025-10-27 | Morgan Stanley Smith Barney LLC Executive Financial Services |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON7 holders report 5% or more of IRDM in their latest filing, 3 on Schedule 13D (active intent). The largest reported stake is BlackRock, Inc. at 12.5% of the class (13,072,774 shares), filed 2026-01-08 for an event on 2025-12-31.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-13 | 13G | AQR Capital Management Holdings, LLCparent holding company | 7.0M | 6.6% | 2026-06-30 |
| 2026-08-13 | 13G | AQR Capital Management, LLCinvestment adviser | 7.0M | 6.6% | 2026-06-30 |
| 2026-08-12 | 13G/Ano. 2 | Silver Heights Capital Management Incinvestment adviser | 3.3M | 3.1% | 2026-06-30 |
| 2026-08-04 | 13D/Ano. 10 | Baralonco Limitedcorporation | 10.0M | 9.4% | 2026-07-31 |
| 2026-08-04 | 13D/Ano. 10 | Estate of the late Khalid bin Abdullah bin Abdulrahmanother entity | 10.0M | 9.4% | 2026-07-31 |
| 2026-08-04 | 13D/Ano. 10 | Fahd bin Khalid bin Abdullah bin Abdulrahman, as legal representative of the Estate of the late Khalid bin Abdullah bin Abdulrahmanindividual | 10.0M | 9.4% | 2026-07-31 |
| 2026-04-29 | 13G | Vanguard Portfolio Managementinvestment adviser | 6.1M | 5.8% | 2026-03-31 |
| 2026-03-26 | 13G/Ano. 14 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-01-08 | 13G/Ano. 6 | BlackRock, Inc.parent holding company | 13.1M | 12.5% | 2025-12-31 |
| 2025-12-05 | 13G/Ano. 4 | ARK Investment Management LLCinvestment adviser | 4.1M | 3.9% | 2025-11-30 |
| 2025-12-05 | 13G/Ano. 4 | Catherine D. Woodparent holding company, individual | 4.1M | 3.9% | 2025-11-30 |
| 2025-11-14 | 13G/Ano. 14 | Ronald Baronparent holding company, individual | 683K | 0.7% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 14 | Baron Capital Group, Inc.corporation, parent holding company | 683K | 0.7% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 14 | Baron Capital Management, Inc.investment adviser, corporation | 670K | 0.6% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 14 | BAMCO INC /NY/investment adviser, corporation | 13K | 0.0% | 2025-09-30 |
| 2025-11-14 | 13G/Ano. 14 | Baron Growth Fundinvestment company | 0 | 0.0% | 2025-09-30 |
13F holders
Tracked managers holding IRDM at their latest 13F. JSON8 of the 30 tracked managers held IRDM at their latest 13F, $507.4M in total at quarter-end prices. AQR Capital Management is the largest at $374.3M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 2 added shares and 6 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| AQR Capital Management | 2026-06-30 | 6.8M | $374.3M | 0.13% | +3.9M |
| ARK Investment Management | 2026-06-30 | 1.2M | $66.6M | 0.43% | -512K |
| Renaissance Technologies | 2026-06-30 | 610K | $33.4M | 0.05% | +482K |
| Two Sigma Investments | 2026-06-30 | 364K | $19.9M | 0.01% | -39K |
| Millennium Management | 2026-06-30 | 153K | $8.4M | 0.00% | -341K |
| Bridgewater Associates | 2026-06-30 | 44K | $2.4M | 0.01% | -63K |
| D. E. Shaw & Co. | 2026-06-30 | 39K | $2.1M | 0.00% | -44K |
| Point72 Asset Management | 2026-06-30 | 1K | $79K | 0.00% | -105K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q3 FY 2026 (quarter ended 2026-09-30) Iridium Communications reported revenue of $245.7M, up 8.3% from the same quarter a year earlier, and net income of $106.9M (0.98 diluted EPS). In FY 2025 it generated $400.1M of operating cash flow and spent $186.5M on buybacks and $62.9M on dividends.
- Cash
- $97.9M
- Equity
- $577.0M
- Total assets
- $3.08B
- Shares outstanding
- 106,158,479
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q3 FY 2026 | 2026-09-30 | $245.7M | $106.9M | 43.5% | 0.98 |
| Q2 FY 2026 | 2026-06-30 | $225.2M | $9.7M | 4.3% | 0.09 |
| Q1 FY 2026 | 2026-03-31 | $219.1M | $21.6M | 9.9% | 0.20 |
| Q4 FY 2025derived | 2025-12-31 | $212.9M | $24.9M | 11.7% | n/a |
| Q3 FY 2025 | 2025-09-30 | $226.9M | $37.1M | 16.4% | 0.35 |
| Q2 FY 2025 | 2025-06-30 | $216.9M | $22.0M | 10.1% | 0.20 |
| Q1 FY 2025 | 2025-03-31 | $214.9M | $30.4M | 14.2% | 0.27 |
| Q4 FY 2024derived | 2024-12-31 | $213.0M | $36.3M | 17.1% | n/a |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2025 | 2025-12-31 | $871.7M | $114.4M | $400.1M | $100.3M | $186.5M | $62.9M |
| FY 2024 | 2024-12-31 | $830.7M | $112.8M | $376.0M | $69.9M | $407.7M | $64.7M |
| FY 2023 | 2023-12-31 | $790.7M | $15.4M | $314.9M | $73.5M | $247.0M | $64.8M |
| FY 2022 | 2022-12-31 | $721.0M | $8.7M | $344.7M | $71.3M | $257.1M | $0 |
| FY 2021 | 2021-12-31 | $614.5M | -$9.3M | $302.9M | $42.1M | $163.4M | $0 |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-09-30; shares outstanding as of 2026-10-13 from the cover page.
What this page is
Iridium Communications in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Iridium Communications (IRDM), SEC CIK 1418819, listed on Nasdaq, classified by the SEC as communications services, nec. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-28.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-30.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-09-15.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-13.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-09-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-10-20.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-22.JSON and CSV
- Company record
- EDGAR filing index for CIK 1418819Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as communications services, nec
Other company pages
Datasets
Frequently Asked Questions
How much of IRDM is sold short?
2,935,902 shares were held short at the 2026-10-15 settlement, 2.9 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is IRDM's daily short volume?
On 2026-10-28, 58,140 of the 154,167 IRDM shares reported to FINRA were sold short, 37.7% of the day's reported volume. Short volume is a flow for one day, not a position.
Does IRDM have fails to deliver?
The SEC's latest file shows 1,696 IRDM shares failed to deliver at settlement 2026-09-30. Fails are reported per settlement date and published twice a month with a lag.
Are IRDM insiders buying or selling?
Insiders at IRDM reported 11 open-market sells worth $19.6M in the last 90 days and no open-market buys. Latest filing: DESCH MATTHEW J (Chief Executive Officer) on 2026-10-22.
Have IRDM insiders filed to sell?
11 Form 144 notices on file for IRDM worth $19.5M at the prices reported; 8 in the last 90 days worth $19.0M. Latest: TIMOTHY J LAST filed on 2026-09-15 to sell 5,769 shares ($267K) from 2026-09-15.
Who owns 5% or more of IRDM?
7 holders report 5% or more of IRDM in their latest filing, 3 on Schedule 13D (active intent). The largest reported stake is BlackRock, Inc. at 12.5% of the class (13,072,774 shares), filed 2026-01-08 for an event on 2025-12-31.
What did IRDM report last quarter?
In Q3 FY 2026 (quarter ended 2026-09-30) Iridium Communications reported revenue of $245.7M, up 8.3% from the same quarter a year earlier, and net income of $106.9M (0.98 diluted EPS). In FY 2025 it generated $400.1M of operating cash flow and spent $186.5M on buybacks and $62.9M on dividends.
Which tracked 13F managers own IRDM?
8 of the 30 tracked 13F managers held IRDM shares at their latest filing, $507.4M in all. The largest: Cliff Asness's AQR Capital Management (6.8M shares, $374.3M), Cathie Wood's ARK Investment Management (1.2M shares, $66.6M), Renaissance Technologies (610K shares, $33.4M), Two Sigma Investments (364K shares, $19.9M), Izzy Englander's Millennium Management (153K shares, $8.4M), Ray Dalio's Bridgewater Associates (44K shares, $2.4M). The table above lists all 8.
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.