Block cut 4,000 jobs and Dorsey wrote the reasoning into the shareholder letter

Block filed its Q4 2025 shareholder letter, signed by Jack Dorsey and CFO Amrita Ahuja, as an exhibit to an 8-K on 26 February 2026. The first paragraph announces a workforce reduction and the fourth gives the reason.

What the letter states

The letter states a headcount reduction and a thesis, in that order:

We’re reducing Block by nearly half, from over 10,000 people to just under 6,000, which means that over 4,000 people are being asked to leave or entering into consultation.

Then the reason, under the letter’s core thesis:

Intelligence tools have changed what it means to build and run a company. We’re already seeing it internally. A significantly smaller team, using the tools we’re building, can do more and do it better.

And the forecast:

I think most companies are late. Within the next year, I believe the majority of companies will reach the same conclusion and make similar structural changes.

The letter does not present the cut as a response to weakness. It reports 2025 gross profit of $10.36 billion, up 17 percent, raises guidance, and states the intent plainly: “We believe Block will be significantly more valuable as a smaller, faster, intelligence-native company.” Fortune reported the shares up nearly 18 percent intraday the next day.

The figures in the filings

The quantities the letter rounds are exact in the filings. The 10-K for 2025, filed the same day, counts 10,205 full-time employees worldwide as of 31 December 2025 and sets the plan at “more than 40%” of the workforce.

The 10-Q for the second quarter, filed 5 August 2026, reports the plan as concluded and prices it. Restructuring charges for the six months to 30 June 2026 were $495.0 million, mostly severance and notice-period pay. Against that, Block expects annualised net cost savings of approximately $800 million to $900 million, “a portion of which we expect to strategically reinvest in the Company”.

Restructuring charges in the first half of 2026: $495.0 million. Expected annualised net cost savings: $800 million to $900 million.

Block 10-K for fiscal 2025, filed 26 February 2026, and 10-Q for Q2 2026, filed 5 August 2026, both retrieved 7 October 2026

One sentence in that 10-Q does more work than the letter. Block writes that it plans “to continue to operate at this smaller size” and is pursuing further efficiency “through a combination of AI automation, prioritization of our scope, performance management, and centralization of teams and functions to reduce duplication”. Three of those four levers need no model.

Block’s position as the maker of the tools

Block builds the tools the letter credits, and the middle clause says so: “using the tools we’re building”. That qualifier decides how far the claim travels.

The Q2 2026 letter lists them. Block built the agent framework goose in early 2024 “to work with any model because betting on a single lab means inheriting its ceiling”, then Builderbot for orchestration across its codebase, and all of it runs on “one internal platform for model access, routing, tools, and permissions”.

Block is explicit that this is a position: “To us the models are interchangeable, and everything that matters, the harness, the data, and the distribution, is ours.” The same letter reports that in June 2026 “agentic AI helped write and review nearly all of our production code changes”.

Cloud spend against personnel spend

Personnel costs fell and the infrastructure bill rose in the same quarter. In product development, Block reports personnel costs down $146.4 million year on year for the three months to 30 June 2026, while cloud computing infrastructure fees in that same line rose $86.8 million for the quarter.

Those are different line items and the one does not buy the other, though part of the work has clearly moved onto a meter, which means the saving is smaller than the payroll removed. Block now expects 2026 gross profit of $12.51 billion and adjusted operating income of $3.47 billion, a 28 percent margin, after the savings and after the reinvestment.

AI use at 50 to 250 people

Among EU enterprises with 50 to 249 people employed, 30.36 percent used at least one AI technology in 2025, against 55.03 percent of those with 250 or more (Eurostat, dataset isoc_eb_ai, EU-27, retrieved 7 October 2026).

The build-or-buy split in the same Eurostat collection bears directly on Dorsey’s sentence. Of medium-sized enterprises using AI in 2024, 58.82 percent used commercial software ready to use and 24.51 percent had it developed by their own employees. Enterprises can name more than one route, so the shares do not sum to a hundred.

Read against the letter, that is the gap. Dorsey’s claim rests on in-house capability that roughly a quarter of medium-sized European AI users have at all, and Block’s is a decade deep.

What holds at 150 people

Three parts of the February letter survive the change of scale.

The reduction came after the capability. goose, Builderbot and the internal platform were running before the structure changed around them. Reversed, that order produces the gap between pilot and production rather than a result.

The model layer was kept replaceable on purpose. “To us the models are interchangeable” is an architecture decision a small company can copy cheaply, since the work is owning the interface between its own code and whichever model it rents.

AI automation was one of four named levers. The 10-Q puts scope, performance management and de-duplication beside it. Naming only the first describes a procurement decision.

What does not hold is the arithmetic. A 40 percent reduction is an aggregate with meaning at 10,205 people, and at 150 it is sixty people whom everyone left behind knows by name, where the honest sentence is about hiring that no longer happens, the point Andy Jassy’s memo made in reverse.

The read

The letter is cited as evidence that AI is now cutting jobs at scale, and it is evidence of that at one company. Read as written, it is also a document about tools its author’s company builds, priced at $495.0 million to save $800 to $900 million a year.

The forecast sets its own test. Dorsey named a window of one year from February 2026, so anyone citing the letter can check it against what companies did rather than against what it predicted.

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