One Roadmap, Two Balance SheetsNarrow moat

Sandisk (SNDK) — moat facet

R&D is 6.6% of a record year and was 19.2% of a bad one. Splitting that bill with a competitor is what made a NAND roadmap survivable through three years of losses.

Two companies, one roadmap, one R&D bill — and Sandisk's half of it is $1,328 million a year.

R&D as a share of revenue, by year (%)19.2%FY2023 $1,167M15.9%FY2024 $1,061M15.4%FY2025 $1,132M6.6%FY2026 $1,328MThe spend barely moves. The denominator moves violently. Shared R&D minimum for 2027: $138M.
A NAND roadmap costs about the same every year, and Sandisk lost money in three of these four while funding one.

Research and development was $1,328 million in fiscal 2026, 6.6% of revenue, up $196 million on the prior year mostly on variable compensation and headcount.1 Look at that as a percentage of a normal year rather than a record one: against fiscal 2025's revenue it was 15.4%, and against fiscal 2023's, 19.2%.2 The spending barely moves. The denominator moves violently.

That is the argument for sharing it. Sandisk participates in common R&D activities with Kioxia and is contractually committed to a minimum funding level — $138 million due for 2027.3 A NAND roadmap has to be funded through the troughs or the next node arrives late, and a company that lost $2.1 billion in 2023 and $1.6 billion in 2025 was funding one anyway. Splitting the development of the process and the memory design across two balance sheets is what made that survivable.

It also fixes the roadmap for both parties. Sandisk cannot accelerate a node transition alone, cannot skip one, and cannot pursue a different architecture inside Flash Ventures without agreement. The co-development that guarantees access also removes the option of divergence.

The comparison worth making is with Samsung, which funds its NAND roadmap alone out of a conglomerate, and with Micron, which funds a DRAM roadmap and a NAND roadmap from one company.

Watch R&D as a share of a mid-cycle revenue base rather than this year's. Around 15% is what this business actually spends, and the question is whether that buys parity with a rival spending alone.

Moat trajectory: Holding steady

The shared R&D commitment is contractual and the minimum for 2027 is $138 million. Sandisk's own R&D rose $196 million in the year, mostly on variable compensation rather than programme scope.

The number that tests this moat
Reported
Operating expenses, latest quarter
$545M in Q4 fiscal 2026, up 14% year on year

Shared development keeps Sandisk's own spending small; this line growing far faster than revenue would mean the roadmap is getting dearer to share.

Source: Sandisk fiscal Q4 2026 results release (Exhibit 99.1, 5 August 2026) ↗
⚠ Threats to the moat
⚠ THREAT 01
Sharing a Roadmap Removes the Option of a Different One
Sandisk built its most consequential future product with SK hynix rather than with the partner it shares a roadmap with. That is worth noticing.
References
  1. Moat Explorer calcResearch and development was $1,328 million in fiscal 2026, 6.6% of revenue, up $196 million on the prior year mostly on variable compensation and headcount. Look at that as a percentage of a normal year rather than a record one: against fiscal 2025's revenue it was 15.4%, and against fiscal 2023's, 19.2%.
    Sandisk Corporation, Form 10-K for the fiscal year ended 27 June 2025 (SEC, CIK 2023554) — consolidated statements of operations for fiscal 2025, 2024 and 2023. Revenue net $7,355 million, $6,663 million and $6,086 million; cost of revenue $5,143 million, $5,591 million and $5,656 million; gross profit $2,212 million (30.1%), $1,072 million (16.1%) and $430 million (7.1%); research and development $1,132 million (15.4%), $1,061 million (15.9%) and $1,167 million (19.2%); selling, general and administrative $573 million, $455 million and $558 million; goodwill impairment $1,830 million in 2025 and $671 million in 2023; total operating expenses $3,589 million, $1,540 million and $2,465 million; operating loss $1,377 million, $468 million and $2,035 million; net loss $1,641 million, $672 million and $2,143 million. Net loss per common share, basic and diluted, of $11.32, $4.63 and $14.78 on 145 million weighted average shares in each year. Revenue by end market on the prior labels: Cloud $960 million, $325 million and $500 million; Client $4,127 million, $4,069 million and $3,637 million; Consumer $2,268 million, $2,269 million and $1,949 million. Revenue by geography: Asia $4,457 million, $4,510 million and $3,890 million; Americas $1,618 million, $1,095 million and $1,266 million; Europe, Middle East and Africa $1,280 million, $1,058 million and $930 million. No customer accounted for more than 10% of net revenue in any of the three years. — FY2025 · publ. 2025-08-21 · source ↗
  2. ReportedLook at that as a percentage of a normal year rather than a record one: against fiscal 2025's revenue it was 15.4%, and against fiscal 2023's, 19.2%. The spending barely moves.
    Sandisk Corporation, Form 10-K for the fiscal year ended 27 June 2025 (SEC, CIK 2023554) — consolidated statements of operations for fiscal 2025, 2024 and 2023. Revenue net $7,355 million, $6,663 million and $6,086 million; cost of revenue $5,143 million, $5,591 million and $5,656 million; gross profit $2,212 million (30.1%), $1,072 million (16.1%) and $430 million (7.1%); research and development $1,132 million (15.4%), $1,061 million (15.9%) and $1,167 million (19.2%); selling, general and administrative $573 million, $455 million and $558 million; goodwill impairment $1,830 million in 2025 and $671 million in 2023; total operating expenses $3,589 million, $1,540 million and $2,465 million; operating loss $1,377 million, $468 million and $2,035 million; net loss $1,641 million, $672 million and $2,143 million. Net loss per common share, basic and diluted, of $11.32, $4.63 and $14.78 on 145 million weighted average shares in each year. Revenue by end market on the prior labels: Cloud $960 million, $325 million and $500 million; Client $4,127 million, $4,069 million and $3,637 million; Consumer $2,268 million, $2,269 million and $1,949 million. Revenue by geography: Asia $4,457 million, $4,510 million and $3,890 million; Americas $1,618 million, $1,095 million and $1,266 million; Europe, Middle East and Africa $1,280 million, $1,058 million and $930 million. No customer accounted for more than 10% of net revenue in any of the three years. — FY2025 · publ. 2025-08-21 · source ↗
  3. ReportedSandisk participates in common R&D activities with Kioxia and is contractually committed to a minimum funding level — $138 million due for 2027. A NAND roadmap has to be funded through the troughs or the next node arrives late, and a company that lost $2.1 billion in 2023 and $1.6 billion in 2025 was funding one anyway.
    Sandisk Corporation, Form 10-K FY2026 — Note 10, Related Parties and Related Commitments and Contingencies, and the related Item 1 and Item 7 disclosure on Flash Ventures. Sandisk procures all of its flash-based memory wafers from Flash Partners Ltd., Flash Alliance Ltd. and Flash Forward Ltd.; it holds a 49.9% ownership interest and Kioxia 50.1% in each. Wafers are manufactured by Kioxia at its wafer fabrication facilities in Japan using equipment individually owned or leased by each Flash Ventures entity; each entity purchases wafers from Kioxia at cost and resells them to Sandisk and Kioxia at cost plus a markup, with each partner generally entitled to 50% of output. The facilities are Y3 (Flash Partners, 2004), Y4 (Flash Alliance, 2006), Y5 (Flash Forward, 2010), New Y2 (production from 2016), Y6 (2018), K1 at Kitakami (2019), Y7 (2022) and K2 at Kitakami, whose output began in the year ended 3 July 2026. Sandisk is obligated to pay for variable costs based on a rolling three-month forecast, and purchase orders placed with Flash Ventures for up to three months are binding and cannot be cancelled; it is obligated to pay for half of Flash Ventures' fixed costs regardless of the output it chooses to purchase, and is committed to fund 49.9% to 50.0% of each entity's capital investments where operating cash flow is insufficient. Flash Ventures has historically operated at approximately 100% of manufacturing capacity; during 2026, 2025 and 2024 Sandisk temporarily reduced its utilisation and incurred costs of $11 million, $75 million and $249 million respectively, recorded as charges to cost of revenue. It participates in common R&D activities with Kioxia and is contractually committed to a minimum funding level, with R&D commitments due for 2027 of $138 million. Sandisk accounts for its ownership under the equity method; the entities are VIEs and Sandisk determined it is not the primary beneficiary of any of them, concluding on its 49.9% ownership, the voting structure and the manner in which day-to-day operations are conducted that it lacked the power to direct most of the activities that most significantly impact economic performance. Its 49.9% interest in the earnings of the entities is recognised one quarter in arrears in Other income (expense), net. Summarised financial information for the ventures: net sales of $2,775 million, $2,315 million and $2,252 million and net losses of $85 million, $63 million and $9 million for 2026, 2025 and 2024, with a gross loss of $93 million in 2026; total assets $7,320 million and total net equity of investees $1,025 million. Notes receivable and investments in Flash Ventures totalled $679 million. Sandisk made net payments to Flash Ventures of $3.6 billion, $3.4 billion and $3.4 billion in 2026, 2025 and 2024 and received distributions of $107 million and $176 million in 2026 and 2025. Maximum estimable loss exposure is $2,897 million: notes receivable $577 million, equity investments $102 million, operating lease guarantees $923 million and inventory and prepayments $1,295 million. Flash Ventures sells to and leases back a portion of its tools from a consortium of financial institutions; Sandisk guarantees half of all outstanding obligations under each lease agreement, totalling JPY149.0 billion or $923 million, in annual guarantee instalments of $378 million in 2027, $245 million in 2028, $126 million in 2029, $96 million in 2030 and $78 million in 2031. Prepayments toward Sandisk's share of future building depreciation of $840 million remain to be credited against future wafer purchases, with a further $402 million committed through fiscal 2035. On 29 January 2026 the FAL and FPL Second Commitment and Extension Agreements extended Flash Alliance and Flash Partners from 31 December 2029 to 31 December 2034, so that all three ventures co-terminate on that date; an Agreement to Enhance Collaboration commits Sandisk Technologies to pay Kioxia $1.2 billion over 2026 through 2029 in consideration of Kioxia's manufacturing services and the continued availability of supply, amortised straight-line into cost of revenue. On expiry each entity commences a wind-up and is dissolved, with net proceeds distributed in kind or cash pro rata. Flash Ventures-related commitments total $6,559 million: $2,627 million in 2027, $2,577 million in 2028-2029, $1,318 million in 2030-2031 and $37 million beyond. — FY2026 · publ. 2026-08-17 · source ↗
Sources
Generated September 23, 2026