XOOMAR

Iridium Communications Inc. (IRDM)

Every FINRA and SEC series the site collects for Iridium Communications Inc.: short interest with days to cover, daily short sale volume, fails to deliver and Form 4 insider trades. Listed on Nasdaq, classified by the SEC as communications services, nec.

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2.9M

Short interest

settlement 2026-08-14

2.8

Days to cover

-16.9% vs prior

52.5%

Short share of volume

2026-09-11

77

Fails to deliver

settlement 2026-08-07

-$19.3M

Insider flow, 90 days

0 buys, 9 sells

As of 2026-09-11.

Short interest

FINRA, twice a month; the last 12 months shown, all 48 settlements in the JSON

As of 14 August 2026, short interest in IRDM is 2,872,219 shares, up 46,028 shares over the last month. Over the last 48 readings it ranged from 2,826,191 shares (15 July 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 2.8 days to cover.

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SettlementShares shortChangeAvg daily volumeDays to cover
2026-08-142,872,219-16.9%1,015,2082.83
2026-07-313,457,705+22.4%1,564,0862.21
2026-07-152,826,191-35.3%2,225,0941.27
2026-06-304,367,799-54.0%4,207,7391.04
2026-06-159,488,045+67.9%2,787,2673.40
2026-05-295,651,026-0.3%2,282,8982.48
2026-05-155,669,943+4.6%1,929,8262.94
2026-04-305,421,453-0.3%3,108,5431.74
2026-04-155,435,337-0.4%2,479,1682.19
2026-03-315,456,818-24.3%2,156,3112.53
2026-03-137,208,131+2.9%1,867,2723.86
2026-02-277,003,160-20.6%1,644,1094.26
2026-02-138,818,552-3.5%2,849,2823.10
2026-01-309,140,427-10.0%2,668,3393.43
2026-01-1510,160,860-0.1%1,782,2615.70
2025-12-3110,170,431+9.9%3,167,7753.21
2025-12-159,257,674+11.9%2,485,5893.72
2025-11-288,269,749-12.2%1,435,7085.76
2025-11-149,417,379-0.8%2,135,8094.41
2025-10-319,489,072-3.5%3,513,3782.70
2025-10-159,831,317-4.9%2,404,3204.09
2025-09-3010,340,159-19.1%3,054,6133.39
2025-09-1512,778,472+47.3%4,749,8012.69
2025-08-298,672,561-1.3%1,470,0545.90

Daily short volume

FINRA Reg SHO, last 60 sessions. JSON

As of 11 September 2026, the short share of IRDM volume is 52.5%, up 8.4 points over the last five sessions. Over the last 52 readings it ranged from 23.7% (17 August 2026) to 63.2% (24 August 2026). The latest reading is 6.0 points above the 30-session average of 46.4%, on 244K shares reported.

DateShort volumeTotal volumeShort shareExempt
2026-09-11128K244K52.5%0
2026-09-1097K218K44.5%0
2026-09-09114K230K49.7%12,555
2026-09-08120K208K57.7%9
2026-09-04117K249K47.2%38
2026-09-03159K360K44.1%252
2026-09-0299K204K48.7%102
2026-09-01121K200K60.5%570
2026-08-31146K367K39.8%0
2026-08-28175K388K45.1%0
2026-08-2788K227K38.8%29
2026-08-26197K355K55.5%2,331
2026-08-25124K303K40.9%1,611
2026-08-24163K258K63.2%364
2026-08-21156K305K51.0%0
2026-08-20207K409K50.6%0
2026-08-19134K273K49.1%12
2026-08-18163K326K49.9%8,526
2026-08-17153K647K23.7%6
2026-08-14117K231K50.6%0
2026-08-13172K652K26.4%4,287
2026-08-12109K309K35.3%2
2026-08-11143K470K30.5%3
2026-08-10136K356K38.3%11
2026-08-07181K362K50.0%0
2026-08-06116K255K45.7%0
2026-08-05155K277K55.9%24
2026-08-04196K453K43.2%14
2026-08-03291K524K55.5%0
2026-07-31226K458K49.4%0

Fails to deliver

SEC, by settlement date. JSON

As of 7 August 2026, the fails-to-deliver balance in IRDM is 77 shares, up 57 shares over the last settlement date. Over the last 52 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.

SettlementShares failedPriceValue
2026-08-0777$48.31$4K
2026-08-0520$49.61$992
2026-07-20596$46.68$28K
2026-07-0670,621$53.75$3.8M
2026-07-01126,797$54.85$7.0M
2026-06-301,284$54.59$70K
2026-06-299,565,355$43.52$416.3M
2026-06-2518$42.28$761
2026-06-15390$47.32$18K
2026-06-122,389$49.91$119K
2026-06-09237$47.48$11K
2026-06-0893,863$47.36$4.4M
2026-06-0593,863$52.07$4.9M
2026-06-0368$49.60$3K
2026-04-303,570$36.39$130K
2026-04-221$42.93$43
2026-04-204,602$41.85$193K
2026-04-094,784$34.62$166K
2026-04-0737$32.79$1K
2026-04-062,656$32.86$87K
2026-04-025$28.52$143
2026-03-3197$26.81$3K
2026-03-30322$27.96$9K
2026-03-237,461$25.40$190K
2026-03-189,952$26.24$261K
2026-03-10879$24.24$21K
2026-03-0385$24.77$2K
2026-02-234,275$22.92$98K
2026-02-18354$23.53$8K
2026-02-17710$23.17$16K

Insider trades

SEC Form 4, newest first, 50 of 100 shown. JSON

Insiders at IRDM reported 9 open-market sells worth $19.3M in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: McBride Suzanne E. (Chief Operations Officer) on 2026-08-20.

DateInsiderTitleTypeSharesPriceValueOwned after
2026-08-20McBride Suzanne E.Chief Operations OfficerGift17K$0.00$0265K
2026-08-18FITZPATRICK THOMASn/aSell15K$49.20$740K43K
2026-08-17Last Timothy JamesEVP, Sales &amp; MarketingSell500$50.88$25K93K
2026-08-17Last Timothy JamesEVP, Sales &amp; MarketingSell19K$50.33$957K94K
2026-08-17Kapalka TimothyCAO Iridium Satellite LLCSell13K$50.51$681K36K
2026-08-17McBride Suzanne E.Chief Operations OfficerSell85K$50.28$4.3M282K
2026-08-17Morgan Kathleen A.Chief Legal OfficerSell544$50.85$28K125K
2026-08-17Morgan Kathleen A.Chief Legal OfficerSell33K$50.34$1.6M125K
2026-08-17Olson Eric Tn/aSell8K$50.61$405K150K
2026-08-17NIEHAUS ROBERT Hn/aGift50K$0.00$0267K
2026-08-17FITZPATRICK THOMASn/aSell209K$50.22$10.5M58K
2026-06-01O'Neill Vincent JamesChief Financial OfficerTax withholding1K$51.78$76K128K
2026-06-01Kapalka TimothyCAO Iridium Satellite LLCGrant4K$0.00$049K
2026-06-01Kapalka TimothyCAO Iridium Satellite LLCTax withholding692$51.78$36K45K
2026-06-01Last Timothy JamesEVP, Sales &amp; MarketingTax withholding1K$51.78$78K113K
2026-06-01Scheimreif ScottEVP-Government ProgramsTax withholding2K$51.78$114K260K
2026-06-01Morgan Kathleen A.Chief Legal OfficerTax withholding2K$51.78$106K158K
2026-06-01McBride Suzanne E.Chief Operations OfficerTax withholding4K$51.78$188K367K
2026-06-01DESCH MATTHEW JChief Executive OfficerTax withholding10K$51.78$496K1.5M
2026-05-20Canfield Thomas Cn/aDisposition136$0.00$0234K
2026-04-06Kapalka TimothyCAO Iridium Satellite LLCSell2K$33.00$67K46K
2026-04-02Kapalka TimothyCAO Iridium Satellite LLCSell4K$31.00$117K48K
2026-03-31Shivanandan Monique S.n/aGrant86$0.00$016K
2026-03-31YEANEY JACQUELINE En/aGrant59$0.00$025K
2026-03-31Sears Kayn/aGrant59$0.00$030K
2026-03-31Olson Eric Tn/aGrant757$0.00$0157K
2026-03-31Krongard A Bn/aGrant640$0.00$0367K
2026-03-31NIEHAUS ROBERT Hn/aGrant743$0.00$0317K
2026-03-31FRAZIER LEON ANTHONYn/aGrant182$0.00$046K
2026-03-31FITZPATRICK THOMASn/aGrant95$0.00$0267K
2026-03-31Canfield Thomas Cn/aGrant1K$0.00$0234K
2026-03-31Alterman Louis Mn/aGrant74$0.00$014K
2026-03-09O'Neill Vincent JamesChief Financial OfficerTax withholding3K$24.01$60K130K
2026-03-09McBride Suzanne E.Chief Operations OfficerTax withholding3K$24.01$74K371K
2026-03-09Scheimreif ScottEVP-Government ProgramsTax withholding2K$24.01$58K262K
2026-03-09Last Timothy JamesEVP, Sales &amp; MarketingTax withholding2K$24.01$56K114K
2026-03-09Morgan Kathleen A.Chief Legal OfficerTax withholding2K$24.01$53K160K
2026-03-09Kapalka TimothyCAO Iridium Satellite LLCTax withholding744$24.01$18K52K
2026-03-09DESCH MATTHEW JChief Executive OfficerTax withholding9K$24.01$210K1.5M
2026-03-01Scheimreif ScottEVP-GOVERNMENT PROGRAMSTax withholding13K$22.49$283K264K
2026-03-01Scheimreif ScottEVP-GOVERNMENT PROGRAMSGrant67K$0.00$0277K
2026-03-01Morgan Kathleen A.CHIEF LEGAL OFFICERTax withholding11K$22.49$254K162K
2026-03-01Morgan Kathleen A.CHIEF LEGAL OFFICERGrant71K$0.00$0174K
2026-03-01McBride Suzanne E.CHIEF OPERATIONS OFFICERTax withholding20K$22.49$461K374K
2026-03-01McBride Suzanne E.CHIEF OPERATIONS OFFICERGrant134K$0.00$0395K
2026-03-01O'Neill Vincent JamesChief Financial OfficerTax withholding4K$22.49$82K132K
2026-03-01O'Neill Vincent JamesChief Financial OfficerGrant84K$0.00$0136K
2026-03-01Kapalka TimothyCAO IRIDIUM SATELLITE LLCTax withholding2K$22.49$42K52K
2026-03-01Kapalka TimothyCAO IRIDIUM SATELLITE LLCGrant14K$0.00$054K
2026-03-01Last Timothy JamesEVP, Sales &amp; MarketingTax withholding4K$22.49$87K117K

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 the rarer, stronger signal.

Planned sales (Form 144)

Newest first. JSON

7 Form 144 notices on file for IRDM worth $18.7M at the prices reported; 7 in the last 90 days worth $18.7M. Latest: TIMOTHY J LAST filed on 2026-09-03 to sell 2,013 shares ($95K) from 2026-09-03.

FiledSellerSharesMarket valueOf outstandingSale fromBroker
2026-09-03TIMOTHY J LASTOfficer2K$95K0.002%2026-09-03Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-18FITZPATRICK THOMASDirector15K$746K0.014%2026-08-18The Charles Schwab Corporation
2026-08-17SUZANNE MCBRIDEOfficer, Director85K$4.3M0.081%2026-08-17Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-17ERIC T OLSONDirector8K$405K0.008%2026-08-17Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-17TIMOTHY J LASTOfficer20K$983K0.018%2026-08-17Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-17KATHLEEN MORGANOfficer33K$1.7M0.031%2026-08-17Morgan Stanley Smith Barney LLC Executive Financial Services
2026-08-17THOMAS FITZPATRICKDirector209K$10.5M0.197%2026-08-17Morgan Stanley Smith Barney LLC Executive Financial Services

Large holders (13D and 13G)

One row per reporting person, newest filing first. JSON

3 holders above 5% have filed on IRDM, 3 on Schedule 13D (active intent). The largest reported stake is Baralonco Limited at 9.4% of the class (10,000,000 shares), filed 2026-08-04 for an event on 2026-07-31.

FiledFormHolderSharesOf classEvent
2026-08-0413D/Ano. 10Baralonco Limitedcorporation10.0M9.4%2026-07-31
2026-08-0413D/Ano. 10Estate of the late Khalid bin Abdullah bin Abdulrahmanother entity10.0M9.4%2026-07-31
2026-08-0413D/Ano. 10Fahd bin Khalid bin Abdullah bin Abdulrahman, as legal representative of the Estate of the late Khalid bin Abdullah bin Abdulrahmanindividual10.0M9.4%2026-07-31

13F holders

Tracked managers holding IRDM at their latest 13F. JSON

9 of the 30 tracked managers held IRDM at their latest 13F, $539.0M 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 3 added shares and 5 cut.

FundQuarterSharesValueOf portfolioChange in shares
AQR Capital Management2026-06-306.8M$374.3M0.13%+3.9M
ARK Investment Management2026-06-301.2M$66.6M0.43%-512K
Renaissance Technologies2026-06-30610K$33.4M0.05%+482K
Citadel Advisors2026-06-30541K$29.7M0.00%+294K
Two Sigma Investments2026-06-30364K$19.9M0.01%-39K
Millennium Management2026-06-30162K$8.9M0.00%new or n/a
Bridgewater Associates2026-06-3044K$2.4M0.01%-63K
D. E. Shaw & Co.2026-06-3039K$2.1M0.00%-44K
Point72 Asset Management2026-06-3028K$1.6M0.00%-129K

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. JSON

In Q2 2026 (quarter ended 2026-06-30) Iridium Communications Inc. reported revenue of $225.2M, up 3.8% from the same quarter a year earlier, and net income of $9.7M (0.09 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
$184.2M
Equity
$472.5M
Total assets
$2.57B
Shares outstanding
105,960,383

Quarterly, last 8 quarters

QuarterPeriod endRevenueNet incomeMarginDiluted EPS
Q2 20262026-06-30$225.2M$9.7M4.3%0.09
Q1 20262026-03-31$219.1M$21.6M9.9%0.20
Q4 2025derived2025-12-31$212.9M$24.9M11.7%n/a
Q3 20252025-09-30$226.9M$37.1M16.4%0.35
Q2 20252025-06-30$216.9M$22.0M10.1%0.20
Q1 20252025-03-31$214.9M$30.4M14.2%0.27
Q4 2024derived2024-12-31$213.0M$36.3M17.1%n/a
Q3 20242024-09-30$212.8M$24.4M11.5%0.21

Fiscal years, with buybacks and dividends

Fiscal yearEndsRevenueNet incomeOperating cash flowCapexBuybacksDividends
FY 20252025-12-31$871.7M$114.4M$400.1M$100.3M$186.5M$62.9M
FY 20242024-12-31$830.7M$112.8M$376.0M$69.9M$407.7M$64.7M
FY 20232023-12-31$790.7M$15.4M$314.9M$73.5M$247.0M$64.8M
FY 20222022-12-31$721.0M$8.7M$344.7M$71.3M$257.1M$0
FY 20212021-12-31$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 cash paid to repurchase common stock in the year (XBRL PaymentsForRepurchaseOfCommonStock), not authorizations. Balance sheet lines are as of 2026-06-30; shares outstanding as of 2026-07-15 from the cover page.

What this page is

Iridium Communications Inc. 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 pulls every series the site collects for one ticker onto one URL, keyed by the SEC's own ticker list, 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 summary sentence built from the rows (last value, change, range with dates) and its own JSON and CSV links. Nothing on the page is written by a model; the sentences change only when the data does. A page exists only for companies with data in at least two series, and every section says when its source last updated.

This page follows Iridium Communications Inc. (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 method

Short interest
FINRA consolidated short interestTwice a month, about eight business days after settlement. Latest 2026-08-14.JSON and CSV
Daily short volume
FINRA Reg SHO daily filesEvery trading day, loaded the following morning. Latest 2026-09-11.JSON and CSV
Fails to deliver
SEC fails-to-deliver dataTwice a month, a few weeks after the half month ends. Latest 2026-08-07.JSON and CSV
Planned sales
SEC EDGAR Form 144EDGAR read every 30 minutes; a notice is filed on or before the sell order. Latest 2026-09-03.JSON and CSV
Large holders
SEC EDGAR Schedule 13D and 13GEDGAR read every 30 minutes; 13D within five business days of crossing 5%, 13G on the passive schedule. Latest 2026-08-04.JSON and CSV
13F holders
SEC EDGAR Form 13F-HRQuarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
Financials
SEC XBRL company factsRefreshed weekly from the SEC's structured data; values are as filed in the 10-Q and 10-K. Latest 2026-06-30.JSON and CSV
Insider trades
SEC EDGAR Form 4EDGAR read every 30 minutes; filings are due two business days after the trade. Latest 2026-08-20.JSON and CSV
Company record
EDGAR filing index for CIK 1418819Ticker, name and exchange from the SEC's company list, refreshed weekly.
Rate limits
30 requests a minute without a key, 120 a minute with a key from a free account.

Data checks. Every dataset is checked against its source once a day. This dataset passed the last run, 12 Sep 05:40 UTC.

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 crowded short are the combination that has historically preceded squeezes; insider sells next to a crowded short 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.

Datasets

Frequently Asked Questions

How much of IRDM is sold short?
2,872,219 shares were held short at the 2026-08-14 settlement, 2.8 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 2026-09-11, 128,160 of the 244,216 IRDM shares reported to FINRA were sold short, 52.5% 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 77 IRDM shares failed to deliver at settlement 2026-08-07. Fails are reported per settlement date and published twice a month with a lag.
Are IRDM insiders buying or selling?
Insiders at IRDM reported 9 open-market sells worth $19.3M in the last 90 days and no open-market buys. Sells alone are a weak signal; insiders sell for tax, diversification and estate reasons all the time. Latest filing: McBride Suzanne E. (Chief Operations Officer) on 2026-08-20.
Have IRDM insiders filed to sell?
7 Form 144 notices on file for IRDM worth $18.7M at the prices reported; 7 in the last 90 days worth $18.7M. Latest: TIMOTHY J LAST filed on 2026-09-03 to sell 2,013 shares ($95K) from 2026-09-03.
Who owns more than 5% of IRDM?
3 holders above 5% have filed on IRDM, 3 on Schedule 13D (active intent). The largest reported stake is Baralonco Limited at 9.4% of the class (10,000,000 shares), filed 2026-08-04 for an event on 2026-07-31.
What did IRDM report last quarter?
In Q2 2026 (quarter ended 2026-06-30) Iridium Communications Inc. reported revenue of $225.2M, up 3.8% from the same quarter a year earlier, and net income of $9.7M (0.09 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 funds hold IRDM?
9 of the 30 tracked managers held IRDM at their latest 13F, $539.0M 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 3 added shares and 5 cut.

Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.