Iridium Communications Inc. - Common Stock (IRDM)

CUSIP: 46269C102

Q1 2026 13F Holders as of 31 Mar 2026

Security type / class
Equity / Common Stock
Total 13F shares
90,245,959
Total 13F value
$2,500,750,151
Holder snapshot 6 visible 7 signals
Share change
-4,316,362
Put/Call ratio
39%
SEC-reported price per share
$27.74
Number of holders
375
Value change
-$71,183,529
Number of buys
216
Open additional details 1 more signal available
Number of sells
144
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
105,059,260

Security key

46269C102

Report period

Q1 2026

Institutions

375

Top holders

10

IRDM full security history Ownership snapshot Full 13F holder table Newer quarter: Q2 2026 Previous quarter: Q4 2025 Iridium Communications Inc. SEC filings Iridium Communications Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of IRDM - Iridium Communications Inc. - Common Stock (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
15/15
Latest evidence
31 Mar 2026
13F 13D/G 3/4/5 Lead comparable stake: 12% 13D/G row: BlackRock, Inc. Showing 1-6 of 15 holder rows.

Quick read

BlackRock, Inc. leads the comparable SEC ownership view at 12%.

15 of 15 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%
VANGUARD PORTFOLIO MANAGEMENT LLC 5.8%
Silver Heights Capital Management... 5%
ARK Investment Management LLC 3.9%
BAMCO INC /NY/ 0.65%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
BlackRock, Inc.
13F 13D/G
Company
13F 13D/G
12%
from 13D/G
$241,428,182
13,891,150 shares
 — 31 Dec 2025
VANGUARD PORTFOLIO MANAGEMENT LLC
13D/G
Vanguard Portfolio Management
13D/G
5.8%
$169,323,379
6,103,943 shares
 $0 31 Mar 2026
Silver Heights Capital Management Inc
13F 13D/G
Company
13F 13D/G
5%
from 13D/G
$91,264,692
5,251,133 shares
 — 31 Dec 2025
ARK Investment Management LLC
13D/G 13F
Company
13D/G 13F
3.9%
$68,710,210
4,116,849 shares
 -$39,609,693 30 Nov 2025
BAMCO INC /NY/
13D/G 13F
Baron Capital Group, Inc. · Company
13D/G 13F
0.65%
$11,924,936
682,986 shares
 -$134,353,321 30 Sep 2025
A. B. Krongard
3/4/5
Director
3/4/5
0.5%
$9,168,382
527,525 shares
 — 31 Mar 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.

13F holder rows

Institutional holders as of Q1 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
375
Shares
90,245,959
Rows available
375
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q1 2026 vs Q4 2025 Across Filers

Q4 2025 holders
325
Q1 2026 holders
375
Holder diff
50
Investor Q4 2025 Shares Q1 2026 Shares Share Diff Share Chg % Q4 2025 value Q1 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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