Comparable stake leader
BlackRock, Inc.
SEC ownership of Iridium Communications Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001418819.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
03 Sep 2026
- Public ticker
- IRDM on Nasdaq
- Parsed ownership sources
-
13F, 13D/G, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
BlackRock, Inc.
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
BlackRock, Inc.
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
03 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001418819
- Issuer location
- Mclean, VA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Iridium Communications Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
BlackRock, Inc.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
03 Sep 2026
13F
13D/G
3/4/5
Lead comparable stake: 12%
13D/G row: BlackRock, Inc.
Showing 1-8 of 50 holder rows.
Quick read
BlackRock, Inc. leads the comparable SEC ownership view at 12%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens BlackRock, Inc.'s linked filing trail.
Comparable ownership
Top 5
BlackRock, Inc.
12%
Baralonco Ltd
9.4%
AQR CAPITAL MANAGEMENT LLC
6.6%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.8%
ARK Investment Management LLC
3.9%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| BlackRock, Inc. |
13F
13D/G
Company
|
12%
from 13D/G
|
$737,586,517
13,447,338 shares
|
— | 30 Jun 2026 |
| Baralonco Ltd |
13D/G
3/4/5
Baralonco Limited · 10%+ Owner
|
9.4%
|
$537,500,000
10,000,000 shares
|
$0 | 31 Jul 2026 |
| AQR CAPITAL MANAGEMENT LLC |
13D/G
13F
Company
|
6.6%
|
$375,157,961
6,979,683 shares
|
$0 | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
5.8%
from 13D/G
|
$298,405,885
5,440,399 shares
|
— | 30 Jun 2026 |
| ARK Investment Management LLC |
13D/G
13F
Company
|
3.9%
|
$68,710,210
4,116,849 shares
|
-$39,609,693 | 30 Nov 2025 |
| Silver Heights Capital Management Inc |
13F
13D/G
Company
|
3.1%
from 13D/G
|
$179,630,843
3,274,947 shares
|
— | 30 Jun 2026 |
| BAMCO INC /NY/ |
13D/G
Baron Capital Group, Inc.
|
0.65%
|
$11,924,936
682,986 shares
|
-$134,353,321 | 30 Sep 2025 |
| Matthew J. Desch |
3/4/5
Chief Executive Officer, Director
|
1.4%
|
$79,062,654
1,441,434 shares
|
+$346,600 | 01 Sep 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$19,250,253.
Buys
$871,300
Insiders: 2
Sells
$20,121,553
Insiders: 6
Net
-$19,250,253
Shares: -372,732
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 50,000
Shares: 422,732
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 385,932 | $0 | $19,379,238 | -$19,379,238 |
| 3-6 | 0 | 5,833 | $0 | $184,909 | -$184,909 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 50,000 | 30,967 | $871,300 | $557,406 | +$313,894 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 26 reporting-owner rows connected to Iridium Communications Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
26
Largest Forms 3/4/5 holder
Baralonco Ltd
Net 12M change
-$19,250,253
Latest report
03 Sep 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Baralonco Ltd | 10%+ Owner | $520,170,423 | Mixed | 24 Aug 2021 | ||
| Matthew J. Desch | Chief Executive Officer, Director | $79,062,654 | +$346,600 | +0.44% | Median | 01 Sep 2026 |
| Robert H. Niehaus | Director | $14,640,024 | +$524,700 | +3.7% | Median | 17 Aug 2026 |
| Suzanne E. McBride | Chief Operations Officer, Director | $14,315,356 | -$4,296,627 | -23% | Median | 01 Sep 2026 |
| Scott Scheimreif | EVP-Government Programs | $14,126,727 | Median | 01 Sep 2026 | ||
| A. B. Krongard | Director | $9,168,382 | Mixed | 31 Mar 2026 | ||
| Eric T. Olson | Director | $7,575,309 | -$404,880 | -5.1% | Filing P/S | 17 Aug 2026 |
| Thomas C. Canfield | Director | $7,516,876 | Mixed | 30 Jun 2026 | ||
| Vincent James O'Neill | Chief Financial Officer | $6,962,878 | Median | 01 Sep 2026 | ||
| Kathleen A. Morgan | Chief Legal Officer | $6,736,567 | -$1,671,163 | -20% | Median | 01 Sep 2026 |
| Parker William Rush | Director | $6,703,509 | Mixed | 29 Dec 2023 | ||
| Thomas D. Hickey | Chief Legal Officer, Secretary | $5,809,017 | Mixed | 01 Dec 2021 | ||
| Steven B. Pfeiffer | Director | $4,427,149 | Mixed | 08 Mar 2022 | ||
| Timothy James Last | EVP, Sales & Marketing | $4,257,616 | -$1,078,103 | -20% | Filing P/S | 03 Sep 2026 |
| Bryan J. Hartin | Evp Sales And Marketing | $2,800,376 | Mixed | 19 Dec 2024 | ||
| Donald Lee Thoma | EVP, Aireon | $2,752,228 | Median | 10 Jul 2026 | ||
| Thomas Fitzpatrick | Director | $2,128,372 | -$11,805,350 | -85% | Filing P/S | 17 Aug 2026 |
| WEST BARRY | Director | $2,086,649 | Mixed | 30 Mar 2023 | ||
| Schliemann Henrik O | Director | $2,036,515 | Mixed | 30 Mar 2023 | ||
| Timothy Kapalka | CAO Iridium Satellite LLC | $1,921,834 | -$865,430 | -31% | Median | 01 Sep 2026 |
Recent insider transactions for Iridium Communications Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Timothy James Last | IRDM | Common Stock | Sale | -2.19% | $95,336 | $47.36 | -2,013 | 89,899 | 03 Sep 2026 | Direct |
| Vincent James O'Neill | IRDM | Common Stock | Tax liability | -1.14% | -1,461 | 126,944 | 01 Sep 2026 | Direct | ||
| Timothy Kapalka | IRDM | Common Stock | Tax liability | -1.94% | -693 | 35,038 | 01 Sep 2026 | Direct | ||
| Timothy James Last | IRDM | Common Stock | Tax liability | -1.61% | -1,501 | 91,912 | 01 Sep 2026 | Direct | ||
| Suzanne E. McBride | IRDM | Common Stock | Tax liability | -1.37% | -3,623 | 260,991 | 01 Sep 2026 | Direct | ||
| Scott Scheimreif | IRDM | Common Stock | Tax liability | -0.85% | -2,207 | 257,552 | 01 Sep 2026 | Direct | ||
| Matthew J. Desch | IRDM | Common Stock | Tax liability | -0.66% | -9,583 | 1,441,434 | 01 Sep 2026 | Direct | ||
| Kathleen A. Morgan | IRDM | Common Stock | Tax liability | -1.64% | -2,053 | 122,818 | 01 Sep 2026 | Direct | ||
| Suzanne E. McBride | IRDM | Common Stock | Gift | -6.17% | -17,403 | 264,614 | 20 Aug 2026 | Direct | ||
| Thomas Fitzpatrick | IRDM | Common Stock | Sale | -25.8% | $740,263 | $49.20 | -15,046 | 43,260 | 18 Aug 2026 | Direct |
| Thomas Fitzpatrick | IRDM | Common Stock | Sale | -78.2% | $10,507,681 | $50.22 | -209,233 | 58,306 | 17 Aug 2026 | Direct |
| Timothy James Last | IRDM | Common Stock | Sale | -17.3% | $982,767 | $50.34 | -19,521 | 93,413 | 17 Aug 2026 | Direct |
| Timothy Kapalka | IRDM | Common Stock | Sale | -27.4% | $680,521 | $50.51 | -13,473 | 35,731 | 17 Aug 2026 | Direct |
| Suzanne E. McBride | IRDM | Common Stock | Sale | -23.2% | $4,296,627 | $50.28 | -85,454 | 282,017 | 17 Aug 2026 | Direct |
| Kathleen A. Morgan | IRDM | Common Stock | Sale | -21% | $1,671,163 | $50.35 | -33,192 | 124,871 | 17 Aug 2026 | Direct |
| Olson Eric T. | IRDM | Common Stock | Sale | -5.07% | $404,880 | $50.61 | -8,000 | 149,680 | 17 Aug 2026 | Direct |
| Robert H. Niehaus | IRDM | Common Stock | Gift | -15.8% | -50,000 | 266,910 | 17 Aug 2026 | Direct | ||
| Donald Lee Thoma | IRDM | Common Stock | Award | 41,949 | 41,949 | 10 Jul 2026 | Direct | |||
| Jacqueline E. Yeaney | IRDM | Common Stock | Award | 0.12% | 29.8 | 25,340 | 30 Jun 2026 | Direct | ||
| Monique S. Shivanandan | IRDM | Common Stock | Award | 0.27% | 43.5 | 15,939 | 30 Jun 2026 | Direct | ||
| Kay Sears | IRDM | Common Stock | Award | 0.1% | 29.8 | 30,114 | 30 Jun 2026 | Direct | ||
| Olson Eric T. | IRDM | Common Stock | Award | 0.24% | 385 | 157,680 | 30 Jun 2026 | Direct | ||
| Robert H. Niehaus | IRDM | Common Stock | Award | 0.12% | 378 | 316,910 | 30 Jun 2026 | Direct | ||
| Leon Anthony Frazier | IRDM | Common Stock | Award | 0.2% | 92.7 | 46,504 | 30 Jun 2026 | Direct | ||
| Thomas Fitzpatrick | IRDM | Common Stock | Award | 0.02% | 48.5 | 267,539 | 30 Jun 2026 | Direct | ||
| Louis M. Alterman | IRDM | Common Stock | Award | 0.27% | 37.7 | 13,810 | 30 Jun 2026 | Direct | ||
| Thomas C. Canfield | IRDM | Common Stock | Award | 0.27% | 639 | 234,294 | 30 Jun 2026 | Direct | ||
| Vincent James O'Neill | IRDM | Common Stock | Tax liability | -1.12% | -1,459 | 128,405 | 01 Jun 2026 | Direct | ||
| Timothy Kapalka | IRDM | Common Stock | Award | 9.27% | 4,175 | 49,204 | 01 Jun 2026 | Direct | ||
| Timothy Kapalka | IRDM | Common Stock | Tax liability | -1.51% | -692 | 45,029 | 01 Jun 2026 | Direct | ||
| Timothy James Last | IRDM | Common Stock | Tax liability | -1.31% | -1,498 | 112,934 | 01 Jun 2026 | Direct | ||
| Scott Scheimreif | IRDM | Common Stock | Tax liability | -0.84% | -2,205 | 259,759 | 01 Jun 2026 | Direct | ||
| Matthew J. Desch | IRDM | Common Stock | Tax liability | -0.66% | -9,583 | 1,451,017 | 01 Jun 2026 | Direct | ||
| Kathleen A. Morgan | IRDM | Common Stock | Tax liability | -1.28% | -2,052 | 158,063 | 01 Jun 2026 | Direct | ||
| Suzanne E. McBride | IRDM | Common Stock | Tax liability | -0.98% | -3,622 | 367,471 | 01 Jun 2026 | Direct | ||
| Thomas C. Canfield | IRDM | Common Stock | Disposed to Issuer | -0.06% | -136 | 233,655 | 20 May 2026 | Direct | ||
| Timothy Kapalka | IRDM | Common Stock | Sale | -4.28% | $67,419 | $33.00 | -2,043 | 45,721 | 06 Apr 2026 | Direct |
| Timothy Kapalka | IRDM | Common Stock | Sale | -7.35% | $117,490 | $31.00 | -3,790 | 47,764 | 02 Apr 2026 | Direct |
| Monique S. Shivanandan | IRDM | Common Stock | Award | 0.54% | 85.5 | 15,895 | 31 Mar 2026 | Direct | ||
| Jacqueline E. Yeaney | IRDM | Common Stock | Award | 0.23% | 58.5 | 25,310 | 31 Mar 2026 | Direct | ||
| Kay Sears | IRDM | Common Stock | Award | 0.19% | 58.5 | 30,084 | 31 Mar 2026 | Direct | ||
| Olson Eric T. | IRDM | Common Stock | Award | 0.48% | 757 | 157,295 | 31 Mar 2026 | Direct | ||
| A. B. Krongard | IRDM | Common Stock | Award | 0.17% | 640 | 366,542 | 31 Mar 2026 | Direct | ||
| Thomas Fitzpatrick | IRDM | Common Stock | Award | 0.04% | 95.4 | 267,490 | 31 Mar 2026 | Direct | ||
| Thomas C. Canfield | IRDM | Common Stock | Award | 0.54% | 1,257 | 233,791 | 31 Mar 2026 | Direct | ||
| Louis M. Alterman | IRDM | Common Stock | Award | 0.54% | 74.1 | 13,772 | 31 Mar 2026 | Direct | ||
| Leon Anthony Frazier | IRDM | Common Stock | Award | 0.39% | 182 | 46,411 | 31 Mar 2026 | Direct | ||
| Robert H. Niehaus | IRDM | Common Stock | Award | 0.24% | 743 | 316,533 | 31 Mar 2026 | Direct | ||
| Vincent James O'Neill | IRDM | Common Stock | Tax liability | -1.9% | -2,514 | 129,864 | 09 Mar 2026 | Direct | ||
| Suzanne E. McBride | IRDM | Common Stock | Tax liability | -0.82% | -3,067 | 371,093 | 09 Mar 2026 | Direct |
* marks a reported price that did not pass the local price check.