C3 AI reported preliminary financial results for its fiscal first quarter 2026, revealing a revenue decline to between $70.2 million and $70.4 million, representing a 20% year-over-year decrease and falling short of the estimated $104.06 million. The company posted a GAAP operating loss ranging from $124.7 million to $124.9 million, while the non-GAAP operating loss was between $57.7 million and $57.9 million, more than double previous projections. CEO Tom Siebel described the sales performance as "completely unacceptable" and disclosed that he is suffering from an autoimmune disease causing significant visual impairment, prompting a search for his succession. C3 AI has initiated a full reorganization of its sales and services divisions and established a new leadership team to address execution challenges. The company held $711.9 million in cash at the end of the quarter. Final results and updated guidance are expected to be released on September 3, 2025.