IREN Limited’s fourth quarter did not dump bitcoin into the tape. It printed a mix shift. For the quarter ended June 30, 2026, AI Cloud Services revenue was $70.5 million and Bitcoin Mining revenue was $66.7 million, according to the Form 8-K furnished on August 27, 2026 (accepted 16:13:20 Eastern, accession 0001878848-26-000051) and Exhibit 99.1.
The full fiscal year still belongs to mining. FY26 Bitcoin Mining revenue was $578.2 million against $128.8 million of AI Cloud Services. The $702.6 million net loss is not a spot-market dump either. Non-cash impairments of $638.8 million for the year ($450.4 million in Q4) sit on decommissioned mining hardware as sites convert.
Bitcoin itself, from our CoinGecko snapshot fetched at 2026-08-28T00:03:57+00:00, was about $80,263, up 1.63% over 24 hours. Coinbase BTC-USD stats around 2026-08-28T00:19:09Z showed a session high of $80,835.82 and last $80,429.51. That is range tape, not a miner liquidation headline.
What happened
The 8-K is a results furnishing under Item 2.02, with Item 9.01 attaching the press release as Exhibit 99.1. IREN Limited (Nasdaq: IREN) reported for the fiscal year ended June 30, 2026. Co-CEO William Roberts signed the current report on 27 August 2026.
The table in Exhibit 99.1 (figures in US$ millions) is the whole argument:
- Q4 FY26: AI Cloud 70.5, Bitcoin Mining 66.7, total revenue 137.2, net loss 684.0, Adjusted EBITDA 19.2.
- Q3 FY26 (quarter ended March 31, 2026): AI Cloud 33.6, Bitcoin Mining 111.2, total 144.8, net loss 247.8, Adjusted EBITDA 59.5.
- FY26: AI Cloud 128.8, Bitcoin Mining 578.2, total 707.0, net loss 702.6, Adjusted EBITDA 245.7.
- FY25: AI Cloud 16.4, Bitcoin Mining 484.6, total 501.0, net income 86.9, Adjusted EBITDA 269.7.
AI Cloud Services revenue rose about eight times year on year, from $16.4 million to $128.8 million. Mining revenue still grew versus FY25 ($484.6 million to $578.2 million). Q4 mining dropped hard versus Q3 ($111.2 million to $66.7 million) as the company says sites convert and hardware comes off.
Adjusted EBITDA is a non-GAAP figure. IREN points readers to a reconciliation in the exhibit and notes the definition changed in FY26 to exclude debt conversion inducement and related items. Use the GAAP net loss if you want the accounting score. Use the segment split if you want the operating mix.
The headline commercial print is not FY26 cash. Exhibit 99.1 says $4 billion of contracted annualized run-rate revenue (ARR) for 2026 capacity and $1 billion of ARR operating today. Note 1 says ARR takes GPU/hour pricing on commissioned GPUs under contract, annualizes it over 8,760 hours, and adds storage and ancillaries. It is an operating metric, not a U.S. GAAP measure. Recognized revenue may be materially lower. Note 2 timestamps operating ARR of $1 billion as of August 26, 2026, and says $4 billion of ARR targeted to be operational by December 31, 2026 rests on internal assumptions about utilization, pricing, commissioning, testing, and customer acceptance.
On delivery, IREN says Horizon 1, the first of four 50 MW (IT) liquid-cooled deployments at Childress, was delivered to Microsoft, with NVIDIA Exemplar Cloud status on GB300 NVL72. Horizon 2 is in commissioning. Horizons 3 and 4 are in late-stage construction, targeting delivery in Q4 2026. The company site still lists the Childress campus as a data-center location. That is geography, not a second earnings print.
Context
Listed bitcoin miners have been writing the same conversion story in 2026: keep the power and land, retire or idle hash, sell compute. We already treated MARA’s Q2 as more hashrate and a smaller bitcoin stack, and Riot’s Q2 as a $9 billion AI lease sitting on top of a weak mining print. IREN is further along on the revenue line. Q4 is the first quarter in this table where AI Cloud Services is larger than Bitcoin Mining. Mining was still about 82% of FY26 revenue ($578.2 million of $707.0 million). The year-on-year step-up in total revenue is still mostly mining.
The loss is the conversion invoice. Those impairments are an accounting recognition of miners that will not earn their book value, not a market dump of coins. The exhibit does not give a Q4 bitcoin production figure or an end-of-year BTC treasury in the highlights we are using, so we are not inventing a stack.
Bitcoin’s history is full of miners that looked like hashrate companies until the power became more valuable as something else. Proof of work still needs watts. IREN is trying to sell those watts as GPU hours. Named recent signings include Cohere, Prometheus, Perplexity, Figure AI, Fal AI, and Higgsfield AI, plus a new unnamed “leading frontier AI lab.” Microsoft is the named Horizon 1 customer. Treat that book as counterparty risk, not as a diversified cloud utility.
Financing is the other half. IREN cites $3.6 billion of investment-grade GPU financing for the Microsoft contract at a 6.0% weighted average (note 5: U.S. private placement and DDTL, excluding fees), which together with prepayments funds 96% of associated GPU capex. It also cites new $2.8 billion of GPU financings for non-investment-grade deployments, including $2.4 billion led by Blue Owl and PIMCO as adviser at 9.0% fixed for Mackenzie air-cooled expansion (90% of associated GPU capex). A separate line says existing cash plus committed GPU financing and prepayments of $14 billion. Those are Exhibit 99.1 operating claims, not audited cash on the 8-K cover. Adjusted EBITDA fell in Q4 as headcount “nearly tripled” in FY26. Staffing shows up before ARR becomes GAAP.
If you need a tape check, use a snapshot the way our market snapshot guide describes: timestamp the feed, then refuse to treat a miner 8-K as a bitcoin price event unless the filing actually sells coins.
Our read
I read IREN FY26 as a Q4 mix crossover plus a mining-hardware write-down, not as a bitcoin dump and not as $4 billion of cash already earned.
The crossover is small and real: $70.5 million versus $66.7 million in one quarter. The year is still a mining year. The $4 billion contracted ARR for 2026 capacity is a GPU-hour annualization that the notes refuse to equate with GAAP revenue. Operating ARR of $1 billion as of August 26, 2026 is the figure that is supposed to be “on” today. Getting from $1 billion operating to $4 billion operational by December 31, 2026 is an assumption stack (commissioning, testing, customer acceptance). Horizon 2 through 4 are not finished in the same sentence that calls Horizon 1 delivered.
The $638.8 million impairment is the bitcoin-side bill. You do not get Childress liquid cooling for Microsoft by pretending the ASICs still have their old useful life. Traders who flatten IREN into “miners are selling bitcoin” are reading the wrong line. Traders who flatten it into “AI Cloud already replaced mining” are reading the wrong year.
Falsifiable claim: by 2026-11-15 23:59 UTC, if IREN’s next 8-K or FY26 Form 10-K restates Q4 AI Cloud Services revenue as not $70.5 million, or as not greater than Q4 Bitcoin Mining revenue of $66.7 million, the crossover half of this read is wrong. Separately, by 2026-12-31 23:59 UTC, if a subsequent IREN primary withdraws the $4 billion contracted ARR for 2026 capacity without a replacement signed-capacity figure in the same units, the sold-out-capacity half is wrong.
What to watch next
Watch the FY26 Form 10-K and the next quarterly 8-K for the same two lines: AI Cloud Services revenue versus Bitcoin Mining revenue. One more quarter where mining is back on top would make Q4 a conversion blip, not a new mix. Watch Horizon 2 commissioning and Horizons 3 and 4 against the Q4 2026 delivery target. Late delivery is how $4 billion contracted ARR stays stuck at $1 billion operating.
Watch GAAP revenue versus ARR, and customer concentration in the 10-K. Microsoft plus an unnamed frontier lab plus a short list of AI names is not a uniform book. Recent prepayments of 45-55% of GPU capex help, and they also show who has leverage if a counterparty slips. The range in bitcoin can stay boring while this conversion runs. The 8-K is about watts changing jobs, not about the coin changing character.