IRDM — Q3 2026 Financial Report Analysis

Overview

Iridium's third quarter of 2026 is the first one after it bought out the rest of Aireon, the space-based air traffic surveillance company it already part-owned, and the first full quarter since it agreed to be acquired by Rocket Lab. Both deals dominate the numbers. Reported revenue rose 8.3% to $245.7 million and diluted EPS nearly tripled to $0.98, but almost all of the profit came from a one-time accounting gain on the Aireon stake, while deal costs cut operating income by more than half. On the company's own pro forma basis (as if Aireon had been owned in both years), revenue actually slipped 1.4%.

Headline results

ARPU is average monthly revenue per subscriber. The pro forma line comes from the acquisition note in the 10-Q.

Where the revenue came from

Aireon is the whole growth story this quarter. Aireon contributed $34.5 million of revenue after the July 2 closing, $26.3 million of it inside the "hosted payload and other data" line, which jumped 121% to $41.4 million. Without the Aireon revenue, that line would have been about $15.1 million, down from $18.7 million: the filing points to lower PNT (positioning, navigation and timing) revenue, partly because the prior-year quarter included non-recurring revenue. Iridium also no longer books the hosting, power and data fees Aireon used to pay it — $8.2 million in Q3 2025 — because those are now internal transactions eliminated in consolidation. That is why the company's own pro forma figure shows revenue down 1.4% rather than up 8.3%.

The legacy commercial lines were mixed:

IoT is the pattern worth noting: subscriber growth (+8.6%) is running more than twice as fast as revenue growth (+4%), because each new device earns less. Voice and data shrank in the quarter even though it is up 1% year to date on price increases taken in the second half of 2025.

Government revenue was steady. Government airtime revenue rose to $27.6 million from $26.9 million on the fixed-price EMSS contract with the U.S. Space Force, which pays a flat $110.5 million a year regardless of usage. On September 11, 2026 the Space Force exercised its option to extend EMSS through March 2027 at the same rate; management says it continues to expect a renewal in 2027. Government engineering and support revenue rose to $38.9 million from $38.3 million; year to date, engineering revenue is up 3%, driven mainly by work for the Space Development Agency (SDA).

Equipment sales fell 11% to $19.0 million on fewer handset and L-band transceiver sales, partly offset by more Short Burst Data devices. Management still expects full-year 2026 equipment revenue to be in line with 2025, though year-to-date equipment revenue is down 6%.

What the headline numbers hide

• The EPS jump is an accounting gain, not earnings power. When Iridium bought the remaining 60.5% of Aireon, accounting rules required it to revalue its existing 39.5% stake at fair value. That produced a $135.3 million gain, less $31.4 million of tax, which sits in "gain on equity method investments" ($103.9 million). Profit before taxes and that gain was $5.2 million, down from $47.9 million. The company's pro forma net income — which treats Aireon as owned in both years — was $2.1 million versus $29.4 million.
• Deal costs are large and mostly one-off. Selling, general and administrative expense more than doubled to $74.9 million (+111%). The filing attributes $21.3 million to transaction costs for the Rocket Lab merger and the Aireon purchase, plus $10.6 million of higher employee costs including stock-based pay, $4.8 million of Aireon's own overhead, $2.1 million of professional fees and $1.2 million of stock appreciation rights expense. Adding back only the $21.3 million of transaction costs gives operating income of about $52.9 million, a 21.5% margin — still well below last year's 30.9%, so not all of the decline is deal noise.
• Aireon roughly broke even on Iridium's books. It added $34.5 million of revenue but posted a $55,000 net loss after purchase accounting, including about $8.3 million of extra depreciation and intangible amortization from the deal. It also added $6.5 million of quarterly interest expense on the Aireon loans, which pushed net interest expense up 19% to $26.8 million.
• The tax rate distorted the quarter. The effective tax rate on pre-gain income was 41.9% versus 20.9% a year ago, mainly because acquisition costs and some executive pay aren't tax-deductible.
• Cash generation is holding up better than earnings. Operating cash flow for the nine months was $281.7 million versus $291.5 million a year earlier, down only 3.4%, helped by working-capital timing such as paying annual bonuses fully in cash. After $79.2 million of capital spending, that leaves about $202.5 million of free cash flow, which covered the $49.0 million of dividends. Year-to-date net income ($138.2 million) is not a useful comparison point because it includes the non-cash Aireon gain.
• No buyback tailwind this year. Iridium bought back $185.0 million of stock in the first nine months of 2025 and none in 2026; the merger agreement led the board to end the buyback program on June 28. Diluted share count actually rose to 108.9 million from 106.5 million, so per-share growth no longer gets a lift from a shrinking share count.
• Debt went up. Total debt is now about $2.1 billion. The Aireon purchase added a $183.4 million interest-free seller loan due one year after closing (so around July 2027), $154.7 million of Aireon's existing term loans, and a $100 million revolving credit draw, $50 million of which was still outstanding at quarter-end. Cash was $97.9 million.

Takeaway: Strip out the Aireon revaluation gain and this was a quarter where Iridium's own business barely grew: pro forma revenue fell 1.4% and pro forma net income was $2.1 million versus $29.4 million. Subscriber counts are rising, but IoT and broadband revenue per user are falling, so for a shareholder the Rocket Lab offer ($27.00 in cash plus Rocket Lab stock) now matters more than any single quarter's results.

The Rocket Lab merger

Rocket Lab agreed on June 28, 2026 to acquire Iridium for $27.00 in cash plus Rocket Lab shares per Iridium share. The stock part floats: 0.4000 Rocket Lab shares if Rocket Lab trades at or below $67.50, 0.2400 shares at or above $112.50, and in between whatever number of shares is worth $27.00. Iridium shareholders approved the deal on September 24, and the U.S. antitrust waiting period expired on August 12. Still outstanding are FCC consent and other foreign-investment and telecom approvals; the companies expect to close by mid-2027. Iridium would owe a $223.6 million break fee in specified circumstances, such as accepting a better offer.

Until then, the merger agreement restricts what Iridium can do — no new buybacks, acquisitions or material borrowing outside the ordinary course. The quarterly dividend ($0.15 a share) continues for now.

Outlook

The 10-Q gives no updated full-year revenue or profit guidance. What it does say:

• Transaction costs should fall from here, so management expects SG&A to "moderate from the current quarter."
• Engineering and support revenue is expected to be higher in 2026 than in 2025; equipment revenue in line with 2025.
• EMSS is extended through March 2027, with a renewal expected in 2027 — the single biggest contract risk, since it alone is worth $110.5 million a year.

Our read: the next quarter or two should show cleaner operating margins as merger costs fade, and Q4 will be the first quarter where Aireon's contribution is directly comparable to the quarter before. The two trends to watch are whether IoT revenue growth keeps lagging subscriber growth, and whether broadband ARPU keeps sliding as customers move to companion plans — the filing also lists SpaceX's planned global direct-to-device service among its competitive risks. Unless the Rocket Lab deal hits a regulatory obstacle, though, Iridium's share price will mostly follow the merger terms and Rocket Lab's stock, not these operating trends.