Sandisk Corporation (SNDK) | The Buildout — AI Infrastructure

The Verdict

Sandisk supplies NAND flash, the storage layer that AI inference, reasoning and agentic workloads read from and write to. Its enterprise solid-state drives go into hyperscale and AI infrastructure customers, and its QLC Stargate platform targets the high-capacity data lakes that hold AI data. Management calls AI 'a memory-centric storage-intensive problem' and NAND 'a critical component of the AI architecture.' The company also sells flash into edge devices — PCs, phones, automotive, robotics — where AI features raise the amount of storage per device.

Earnings Beat

Q4 FY2026, the quarter ended 2026-07-03, delivered record revenue of $8,965M — up 51% sequentially and 372% year over year, above the $7.75B–$8.25B guide. Non-GAAP gross margin was 84.6%, above the 79%–81% guide and up from 78.4% in the prior quarter. Non-GAAP EPS of $39.25 also came in above guidance of $30–$33. Management said roughly one-third of the sequential revenue increase came from volume and two-thirds from pricing.

Management tone: Management's tone escalated versus the prior quarter. In April the framing was that the company was engaged in discussions to evolve from quarterly negotiations toward multiyear agreements; by August the NBM book had grown to 8 customers and visibility extended beyond four years. On financial mechanics — the NBM margin level, the components of the margin guide, buyback intent, Edge unit assumptions — management answered directly. It deflected product-timing questions on high-bandwidth flash and BiCS 10 pricing to Investor Day, declined to name NBM customers, and reframed cycle-durability questions toward contract structure.

Management Guidance

For Q1 FY2027 management guided non-GAAP gross margin of 83%–85%. For the full year FY2027, capital spending dollars increase year over year but fall to approximately 6% of revenue, and sellable bit growth is guided to mid-teens.

Trajectory

Revenue rose for a fourth straight quarter, from $2,308M in the quarter ended 2025-10-03 to $8,965M in the quarter ended 2026-07-03. Sequential growth across those four quarters ran 21.4%, 31.1%, 96.7% and 50.7%. Gross margin climbed from 29.8% to 84.6% on the same sequence, and EBITDA margin from 9.9% to 78.6%. The driver was price rather than volume: management said roughly two-thirds of the Q4 sequential increase came from pricing, with Datacenter the fastest-growing end market.

The Model

The model projects FY+1 revenue of $50,000M with EBITDA of $39,350M, a 78.7% margin, and FY+2 revenue of $64,000M with EBITDA of $49,856M, a 77.9% margin. The near-term figure anchors on the NBM book — contracted minimum revenue covering more than half of FY2027 bits — and on the Q1 FY2027 guide. FY+2 depends on NBM coverage reaching roughly two-thirds of bits, the BiCS 10 ramp, and Datacenter demand continuing to outpace the market. Dispersion across the five runs is 13% on FY+1 revenue and 25% on FY+2 revenue.

Projections are the median of 5 independent model runs.

For Q1 FY2027 management guided non-GAAP gross margin of 83%–85%. For the full year FY2027, capital spending dollars increase year over year but fall to approximately 6% of revenue, and sellable bit growth is guided to mid-teens.

What Could Go Right — and Wrong

Looking Ahead

The next 12 months turn on two things the source flags: whether the contracted book converts, and whether margins hold. Management guides Q1 FY2027 gross margin to 83%–85%, with FY2027 sellable bit growth of mid-teens and capital spending at roughly 6% of revenue. Several items management deferred to Investor Day — high-bandwidth flash shipping dates, BiCS 10 pricing, and the inference-memory framework — remain open in the source material.

Financials

Annual Summary

Key Ratios (Trailing)

The Company

Sandisk makes data storage devices and solutions based on NAND flash technology, spanning solid-state drives, embedded products, removable cards, USB drives, and wafers and components. The 10-K organizes the business into Cloud, Client and Consumer end markets, which current reporting calls Datacenter, Edge and Consumer. Sandisk's direct AI exposure is Datacenter: enterprise SSDs used for AI inference, reasoning and agentic workloads, plus the QLC Stargate platform for high-capacity AI data lakes. Edge adds on-device AI, AI-enabled PCs and phones, automotive and robotics.

Sandisk operates as a vertically integrated manufacturer. Management describes managing the value chain from NAND die design through front-end wafer manufacturing 'at some of the largest fab complexes in the world with our JV partner,' to system-level design including controllers, and final back-end assembly and test. Substantially all flash-based memory wafers are made by the Flash Ventures joint ventures in leased facilities at Yokkaichi and Kitakami, Japan. Controllers are primarily designed in-house and manufactured by third-party foundries or acquired from third-party suppliers. Penang, Malaysia is a disclosed owned site for flash R&D and media manufacturing.

Business Segments

Competitive Landscape

The 10-K frames competition as coming from vertically integrated suppliers: 'We compete with vertically integrated suppliers such as Kioxia, Micron Technology, Inc., Samsung Electronics Co., Ltd., SK Hynix, Inc., Yangtze Memory Technologies Co., Ltd. and numerous smaller companies that assemble flash into products.' Kioxia sits on both sides of that line — it is the joint-venture partner that supplies substantially all of Sandisk's flash-based memory and a named competitor. No market-share figures are disclosed in the source material.

Supply Chain

Sandisk sits one step upstream of AI data centers: it buys memory wafers from its Kioxia joint ventures and DRAM from Nanya, then sells SSDs to hyperscalers and OEMs it does not name. No company in the verified-neighbor set mentioned Sandisk by name; the read-through is thematic.