New York, January 15, 2026, 17:05 EST — Trading after hours.
- C3.ai shares dropped roughly 2.7% in late trading, edging closer to the lows seen earlier this week
- According to an SEC filing, Executive Chairman Thomas Siebel offloaded 522,175 shares through a 10b5-1 plan
- Traders await further insider filings alongside the upcoming earnings catalyst
C3.ai (AI) shares slipped roughly 2.7% to $13.53 in after-hours trading Thursday, after starting the day at $13.97 and fluctuating between about $13.50 and $14.10 during the session.
C3.ai stays in the spotlight after a rollercoaster stretch. The enterprise AI software company’s shares ended Wednesday at $13.91, up 2.6%, yet they remain roughly 61% off their 52-week peak of $35.98, MarketWatch data shows. 1
That gap is critical now since C3.ai has shifted back into a sentiment-driven play, rather than one driven by headlines. With investors cautious about smaller AI names, even a hint of new supply can quickly weigh on the stock.
Executive Chairman Thomas M. Siebel offloaded 522,175 Class A shares on Jan. 13, according to a Form 4 filing. The shares went for a weighted-average price of $13.52 each, bringing in roughly $7.1 million. The filing noted the sales followed a Rule 10b5-1 trading plan set up back on Sept. 20, 2024. Trades ranged between $13.265 and $14.20 per share, the document details. 2
Rule 10b5-1 plans let executives line up trades ahead of time, designed to lower the chance that sales rely on material, nonpublic info. They don’t prevent the market from responding.
C3.ai dropped 4.2% on Tuesday, closing at $13.56 and ending a three-day run of gains. Trading volume climbed to around 8.5 million shares, surpassing the stock’s 50-day average of about 6.1 million, according to MarketWatch. The broader market slipped as well, with the S&P 500 down 0.19%. 3
The stock jumped on Wednesday despite the broader market slipping, but Thursday’s drop dragged it back into the familiar price range where traders have been eager to offload gains.
Palantir slipped roughly 0.7% late Thursday, highlighting how AI software stocks often react more to broader market sentiment than to their own headlines.
But the filing has mixed implications. Some investors will dismiss a sale linked to a preset plan, while others view it as another obstacle for a stock that’s had trouble sustaining rallies above the mid-teens.
Investors are waiting to see if any additional insider filings surface and when C3.ai will announce its next quarterly results. MarketScreener’s calendar currently shows a projected earnings release on March 3. 4
