Oxide Computer raises $445M Series D led by Eclipse: what the round says about on-prem cloud

Oxide Computer Company, based in Emeryville, California, announced a $445 million Series D on 9 October 2026, according to its own blog post. Eclipse led the round. Oxide builds rack-scale "cloud computers" that companies run in their own data centers, and says it became profitable in 2026.

The round is a single financing. It is separate from the company's earlier rounds, and Oxide has not stated a valuation or a cumulative total in its announcement.

How much did Oxide raise and who invested?

Oxide raised $445 million in Series D funding, led by Eclipse, Oxide says. An SEC Form D filing, as reported by Dealroom, records $444,999,052 sold under Rule 506(b) to 15 investors. The form was signed by president Steven Tuck on 4 August 2026. Runtime Wire reports that the filing lists 20 July 2026 as the first sale date. That means the filing surfaced about two months before the public announcement.

Oxide's post names these participants:

Pulse 2.0 calls the new investor "AMD Ventures"; Oxide's own post says "AMD". The Form D counts 15 investors, so the public lists name fewer parties than took part.

The valuation is not stated in Oxide's announcement, so this article does not give one.

What does Oxide Computer do?

Oxide sells the Oxide Cloud Computer, a rack-scale integrated system that combines purpose-built hardware with open-source software, according to Pulse 2.0's coverage of the Series C. The target buyer is an enterprise that has historically assembled its own on-premises infrastructure and wants the self-service, API-driven experience of a hyperscale cloud.

Earlier technical coverage gives some detail on the product, with the dates of those reports:

• Network World (12 December 2023) reported racks of 32 sleds, each with an AMD CPU, DRAM and storage, and said Oxide replaced the BIOS with its own firmware and built its own hypervisor and control plane.
• The same report says all Oxide software is open source, while the company charges a subscription for support, updates and bug fixes.
• Futuriom (6 August 2025) described racks of 16, 24 or 32 compute sleds based on AMD EPYC 7713P processors, with two switch blades delivering 12.8 Tbit/s per rack. It said block storage was the supported storage service at the time of writing.

Configurations may have changed since those reports. Oxide's Series D post does not restate specifications.

Futuriom (August 2025) listed Lawrence Livermore National Laboratory, CoreWeave and an unnamed large financial services company among Oxide's customers. Network World (December 2023) named Idaho National Laboratory as the first named customer. Oxide has not published a customer count.

Who founded Oxide Computer?

Steve Tuck (CEO) and Bryan Cantrill (CTO) co-founded Oxide in 2019 with Jessie Frazelle, then chief product officer, according to Futuriom. Network World reports that Tuck and Cantrill worked together at cloud provider Joyent, which Samsung acquired in 2016, and that Frazelle is now CEO of the hardware design company KittyCAD.

The Series D post is authored by Cantrill and Tuck, and says Eclipse has backed the company "over the seven years of the company".

How much has Oxide raised in each round?

Oxide has raised in four disclosed rounds since a seed. The table shows each round as the company or the cited outlet reported it. It does not add them into a total, because Oxide has not stated one after the Series D.

Two details matter for reading these numbers. First, Oxide's Series B post says the company had raised $89 million over its nearly six-year life before that round, so the $100 million Series B more than doubled its capital. Second, the Series C came, in the company's words, "purely from our existing investors", and Oxide wrote that it "did not (and do not) need to raise capital to support the business."

The Series D is 2.2 times the Series C and 4.45 times the Series B, by simple division of the announced amounts.

Why did Oxide raise so much so soon?

Oxide says demand exceeds supply and that hardware companies must spend cash on parts long before they collect from customers. The post states: "we must commit substantial cash to components and manufacturing well before the resulting systems reach customers."

The company says its Series B, Series C, existing debt facilities and operating cash were enough to fill the current backlog. It adds that the amounts were "large enough that we would have had to exercise real caution in accepting additional demand." The Series D removes that constraint, in Oxide's account.

In a FAQ Friday video the same day, Cantrill said the company has had "eye-wateringly large POs for components." Tuck said in the same video that Oxide became profitable and that the company's reason for raising is that demand outstrips supply.

Tuck was quoted by Pulse 2.0 as saying the company had to scale manufacturing capacity by 20x over the past 12 months and that demand still exceeds supply. The figure is the company's own claim.

Is Oxide profitable?

Oxide says yes. The Series D post states that in the spring the company paid income tax, not from a one-time event but because ordinary operations generated taxable income after paying for components, manufacturing, salaries and other costs. Pulse 2.0 reports the company says it reached profitability earlier in 2026.

Oxide has not published revenue, profit or backlog figures. Profitability here is a company claim that cannot be checked against public financials, since Oxide is private.

What will the money be used for?

Oxide describes the round as working capital to secure components, increase manufacturing and serve additional customers, per Pulse 2.0. The post adds that it will let the company "satisfy our substantial backlog while continuing to accept new demand, expand manufacturing capacity, and invest for the enduring company that we have always set out to build."

For the earlier Series C, Channel Dive (19 February 2026) reported that Oxide planned a channel-first go-to-market and intended to remain a standalone vendor. Oxide's Series D materials do not say how much of the new money goes to sales channels versus manufacturing.

What does the round say about on-prem cloud?

It shows investors will fund inventory-heavy on-prem hardware when there is a profitable order book behind it, as the company describes it. Oxide's pitch, as Pulse 2.0 summarizes the company's message, is public-cloud automation with direct control over security, performance, data and computing economics.

The AI angle is the company's own. Oxide says rising agentic AI workloads will raise enterprise demand for owned infrastructure spanning CPU compute, memory, networking and data-intensive applications. Eclipse partner Seth Winterroth is quoted by Pulse 2.0 saying demand for CPU-based systems is accelerating as AI shifts "from generating answers to executing work."

That is a thesis, not a measured trend. Futuriom noted in August 2025 that it was "not clear exactly how Oxide addresses AI processing," and the Series D materials do not describe GPU or accelerator products.

Who are Oxide's competitors?

Futuriom (August 2025) named HPE, Dell and Supermicro as competitors with their own private cloud systems, alongside the public cloud providers. Network World (December 2023) listed Dell, IBM and HPE among OEM rivals.

Industry analyst Keith Townsend of The CTO Advisor, quoted by Channel Dive, said Oxide is seen as a viable competitor to Broadcom's VMware and SoftIron but may not be there yet on capabilities. He described it as a "replatforming decision," not a VMware clone, and said buyers who need to lift and shift VMware-era automation should expect "a high degree of change."

Eclipse's Winterroth takes the opposite view in the Series C press release, as quoted by Channel Dive, saying Oxide "stands apart with a solution that has no real competition." That is an investor's statement.

What's still unclear?

• Valuation. Oxide's announcement does not state one.
• Cumulative funding. Oxide has not stated a total after the Series D. Only the per-round figures above are sourced.
• Backlog, revenue and customers. None are quantified by the company. "Very large" is Oxide's wording.
• Dates. The Form D was signed on 4 August 2026 and shows a 20 July first sale, yet the round was announced on 9 October 2026. One outlet dated the Series C to January 2026; Oxide's own post is dated 5 February 2026, which this article uses.
• Investor list. The Form D reports 15 investors, and Oxide names eight parties.
• Weakest point of the thesis. The funding supports inventory for a backlog the company has not quantified. Profitability is self-reported, and the sled and storage specifications cited above come from 2023 and 2025 coverage.