Sandisk makes flash storage products and sells them to three different kinds of customers: big cloud data centers, device makers like laptop and phone companies, and everyday consumers buying memory cards or USB drives at retail stores. The company designs the products, co-manufactures the underlying memory chips through a joint venture with a Japanese partner called Kioxia, and then assembles and sells finished storage devices under the Sandisk brand name. It became a standalone public company in February 2025, when it was spun off from Western Digital Corporation. Revenue comes from selling these storage products, with prices and volumes that swing up and down depending on how much memory the world needs at any given moment. The diagram below traces where the money goes.
The last three years of financial data tell a clear turnaround story, but one that is still incomplete. In 2023, the business was in serious trouble. Revenue was $6.1 billion, but the gross margin was just 7%. That means for every dollar of revenue, Sandisk kept only seven cents after paying for the cost of making its products. Operating cash flow was negative $713 million. The company was burning cash and losing money on nearly everything it made.
By 2025, revenue had grown to $7.4 billion and gross margin had climbed to 30%. That is a dramatic improvement. The biggest driver was the Cloud segment, where revenue jumped from $325 million in 2024 to $960 million in 2025, a 195% increase, fueled by demand from data centers buying enterprise storage drives. Operating cash flow turned positive at $84 million, the first time in the three-year window that the business generated more cash from operations than it consumed.
However, the headline numbers hide a complication. In 2025, Sandisk recorded a goodwill impairment charge of $1.8 billion. This means the company formally acknowledged that its assets are worth less than what was previously recorded on its books. That charge pushed the net loss to $1.6 billion, despite the improving sales picture. Free cash flow was still negative at $100 million. The business is healing, but it has not yet reached a point where it is generating meaningful cash after all spending.
The recovery in profitability is real, but it was also helped by temporary factors. In 2024, Sandisk absorbed $252 million in charges because it was not running its factories at full capacity. In 2025, that figure fell to $75 million. Lower underutilization charges inflated the gross margin improvement. The company has already warned that more underutilization charges are expected in the first quarter of 2026, as it deliberately slows production to match demand.
The separation also introduced a new layer of financial risk. Sandisk now carries $1.9 billion in long-term debt. Interest expense rose to $63 million in 2025. Before the separation, Sandisk relied on Western Digital's corporate infrastructure. It now has to support those functions independently, which partly explains why selling, general and administrative expenses rose by $118 million in 2025.
The Flash Ventures structure is both Sandisk's competitive advantage and its biggest vulnerability. It gives the company access to low-cost, high-quality memory chips. But it also means Sandisk must keep paying even if it does not need the output. In 2025, that produced $75 million in underutilization charges and $24 million in inventory write-downs. The total committed obligations tied to Flash Ventures reach $4.5 billion over the coming years, on top of $2.6 billion in other purchase obligations.
The joint venture agreements themselves have expiration dates. Flash Partners and Flash Alliance expire on December 31, 2029. Flash Forward expires on December 31, 2034. If Sandisk and Kioxia cannot agree to renew them, the ventures will be wound down. Since Sandisk has limited ability to source flash memory from anywhere else, a failure to renew would severely disrupt the entire business.
On top of the joint venture risk, there are tariff pressures. Most of Sandisk's products sold in the United States are currently exempt from new tariffs on semiconductors. But if those exemptions are removed, the company faces a difficult choice: raise prices and risk losing customers, or absorb the cost and accept lower profits. Most of Sandisk's manufacturing is concentrated in Japan and Malaysia, and the company carries limited or no insurance against natural disasters at those facilities because coverage is either unavailable or too expensive.