Thomas M Siebel

C3.ai CEO Siebel sells 495,575 shares for $5.5M under 10b5-1 plan; stock -63.4% from 52-week high

CEO Thomas M Siebel executed 2 separate sales totaling 495,575 shares for $5,501,359.95 at blended average price $11.10, reducing his non-derivative holdings by -40.7% to 722,362 shares post-transaction. This sale is part of a pre-arranged 10b5-1 trading plan, making it scheduled rather than discretionary. The timing coincides with the stock trading -63.4% below its 52-week high of $30.11, though the stock has recovered +27.5% over the past 30 days. C3.ai remains unprofitable (full-year net income $-133.4M against revenue of $53.3M), though the company showed +25.3% annual revenue growth. The insider retains 223,994 restricted stock units and 329,075 stock options (553,069 total derivative shares), preserving meaningful ongoing exposure despite the significant share reduction.

C3.ai CEO Siebel sells 481,638 shares at avg $8.70 via pre-arranged plan; stock down 70.8% from 52-week high, company unprofitable.

Thomas M Siebel executed 2 separate sales totaling 481,638 shares for $4,192,042.38 at an average price of $8.70, reducing his holdings by 40.0% from 1,204,000 to 722,362 shares. This transaction is scheduled under a 10b5-1 trading plan and therefore pre-arranged, not discretionary. The stock is trading at $8.83 currently, down 70.8% from its 52-week high of $30.24 and down 16.7% over the prior 90 days, while the company posted a negative net income of $-133,363,000.00 on revenue of $53,260,000.00 in its latest quarter and remains unprofitable on a full-year basis despite 25.3% annual revenue growth. The filing reflects a scheduled divestiture by the CEO during a period of substantial stock depreciation and persistent operational losses.

Executive Chairman Siebel sells 491,467 shares ($4.1M) at $8.37 avg; post-trade stake falls 40.5% to 722,362 shares

Thomas M Siebel, Executive Chairman of C3.ai, executed 2 separate sales totaling 491,467 shares for $4,113,840.81 on April 13–14, 2026, reducing his holdings from 1,213,829 to 722,362 shares (-40.5%). The sales occurred at a blended average price of $8.37, approximately 12.1% below the current price of $9.52 and 71.4% below the 52-week high of $29.16. Across Siebel's cross-ticker trade history, his 20 prior sells show a 94.12% well-timed rate at the 90-day mark, and at C3.ai specifically, 2 of 2 measurable prior sales declined 90 days post-transaction (well-timed sells). The company remains unprofitable with full-year net income of $-133,363,000.00 against quarterly revenue of $53,260,000.00, though it posted +25.3% annual revenue growth. The combination of a substantial stake reduction by the founder-led chairman, alongside a strong historical pattern of his sales preceding downturns, may warrant investor attention amid the stock's 29.6% decline over the last 90 days and current trading 67.4% below its 52-week peak.

Siebel sells 501.5K shares at $8.78 avg; stock down 70.3% from 52-week high, down 40% in 90d; unprofitable despite 25.3% revenue growth.

Executive Chairman Thomas M. Siebel executed 2 separate sales totaling 501,497 shares for $4,401,597.56 on March 17–18, 2026, reducing his holdings from 1,223,859 to 722,362 shares (a -41.0% reduction). The sales occurred at a blended average price of $8.78, just $0.11 above the current price of $8.67—suggesting no meaningful gap between transaction and filing date. At the broader context level, the stock is down 70.3% from its 52-week high of $29.16, down 40.0% over the past 90 days, and down 16.6% over the past 30 days. Fundamentals show the company generated $53,260,000.00 in latest-quarter revenue (up 25.3% annually) but posted a net loss of $133,363,000.00 and carries a market cap of only $30,344,930.64—a profile of unprofitable hypergrowth in a depressed equity environment. His prior trades at AI show a 2-of-2 well-timed rate at the 90-day mark (both prior measurable 90-day sales resulted in stock declines); his cross-ticker track record shows a 82.35% well-timed rate on 20 prior sells, with an average 90-day post-sale return of -17.5%. The convergence of heavy equity reduction, severe downward price momentum, mounting losses, and a demonstrated pattern of well-timed exits at this name warrants close monitoring of fundamental deterioration and insider confidence signals.

Executive Chairman Thomas M Siebel sells 511.7K shares ($6.0M) at $11.66 on 2026-02-10; stock now -70.4% from 52-week high.

THOMAS M SIEBEL, Executive Chairman, sold 511,732 shares at $11.66 on 2026-02-10, reducing his stake by 41.5% from 1.23M to 722.4K shares. The sale price was $11.66, but the stock has since declined to $10.38 current price and trades -70.4% from its 52-week high of $35.09, indicating a sharp deterioration post-transaction. Fundamentally, C3.ai reported net income of -$104.7M against revenue of $75.1M (latest quarter) and a market cap of $36.3M, reflecting an unprofitable business with significant losses. At the same ticker, Siebel's prior five trades show a 1-of-1 measurable well-timed rate at the 90-day mark (one prior sell resulted in -23.6% 90-day return), though his cross-ticker track record across 20 sells shows a 75.00% well-timed rate with an average 90-day return of -11.7%, suggesting generally favorable timing on historical exits.

Siebel (Exec Chair) sells 522,175 shares at $13.52 on 2026-01-13 for $7.1M; stock down -61.4% from 52-week high

Thomas M. Siebel, Executive Chairman, executed 2 separate sales totaling 522,175 shares for $7,059,806.00 at a blended average price of $13.52 on 2026-01-13, reducing his holdings by 45.2% from 1.15M to 632.3K shares. The timing follows a sharp recent decline: the stock trades at $13.53 (current), down 61.4% from its 52-week high of $35.09 and down 6.6% over the past 30 days. Within this same ticker, Siebel's prior 2 measurable 90-day outcomes were both well-timed (2025-10-14 sell: -24.8% 90d outcome; 2025-09-16 sell: -15.0% 90d outcome), consistent with a cross-ticker 90-day well-timed sell rate of 64.71%. The company remains unprofitable (net income $-104.7M on $75.1M quarterly revenue) despite 25.3% annual revenue growth, creating structural pressure; the stock's severe drawdown from its prior peak raises the question whether this substantial insider reduction signals capitulation or opportunistic deployment of proceeds.

Executive Chairman Thomas M. Siebel sold 532,832 shares (532.8K) at $14.33 blended average, reducing stake by 36.1% to 941.8K shares.

Thomas M. Siebel, Executive Chairman, executed two separate sales totaling 532.8K shares for $7.6M on 2025-12-16 and 2025-12-17, reducing his holdings from 1.47M to 941.8K shares (-36.1%). The sales occurred at $14.37 and $14.22, blending to $14.33, while the stock currently trades at $13.77—already trading below the transaction prices and down 67.9% from its 52-week high of $42.94. At the same-ticker level, his 3 measurable prior sales at AI showed a 100% well-timed 90-day outcome (all negative returns post-sale), suggesting a pattern of selling ahead of declines. The company remains unprofitable with a net loss of $104.7M against quarterly revenue of $75.1M, though annual growth is positive at +25.3%. A substantial reduction in the Executive Chairman's stake during a period of steep valuation decline and ongoing losses warrants investor attention to underlying business momentum and confidence signals.

Siebel sells 543,706 shares of AI at $15.24 amid steep -65.5% decline from 52-week high; stock down -23.4% in 30 days.

Executive Chairman Thomas M. Siebel sold 543,706 shares (27.4% of his pre-transaction holdings) at $15.24 on 2025-11-11, reducing his stake to 1,437,174 shares. The timing coincides with significant downward pressure: AI is trading -65.5% below its 52-week high of $42.94 and has fallen -23.4% in the past 30 days, with the current price of $14.83 now below the transaction price. His prior trades at AI show a 2-of-2 well-timed rate at the 90-day mark (both prior measurable sells preceded further declines), though the company remains unprofitable with a net income of -$116.8M against quarterly revenue of $70.3M. This sale represents a material reduction in a major shareholder's position during a period of sustained stock deterioration, warranting investor attention to both the underlying business trajectory and the reasons for the significant divestiture at compressed valuations.

Siebel sells 554,802 shares (22.1% of holdings) at $18.82; stock down 57.9% from $42.94 52-week high, company unprofitable with $-116.8M net income.

Thomas M Siebel, Executive Chairman of C3.ai, sold 554,802 shares at $18.82 on 2025-10-14, reducing his holdings from 2.51M to 1.96M shares. This sale occurs when AI trades 57.9% below its 52-week high of $42.94, while the company is unprofitable with a recent net income of $-116.8M against $70.3M quarterly revenue. Siebel's same-ticker history shows mixed timing outcomes: his most recent measurable prior sale (2025-07-18) was well-timed, with the stock falling 36.8% in the subsequent 90 days, but his other measurable sale (2025-08-04) was poorly timed, with the stock declining only 26.8% afterward. His cross-ticker track record exhibits a 37.50% well-timed rate across 20 prior sells, suggesting modest predictive accuracy. The current sale and cumulative recent selling activity at this ticker (5 sales since mid-July) merit monitoring, particularly given the company's persistent unprofitability and proximity to 52-week lows.

Executive Chairman Siebel sells 566,125 shares (18.4% of holdings) in unprofitable AI at $17.23; stock down 59.8% from 52-week high.

Thomas M Siebel, Executive Chairman of C3.ai, Inc., sold 566,125 shares at $17.23 on 2025-09-16, reducing his holdings from 3,076,227 to 2,510,102 shares. The sale value of $9,754,333.75 represents an 18.4% reduction in his pre-transaction holdings at a price that is 59.8% below the 52-week high of $42.94. The company faces structural profitability challenges: latest quarterly revenue stands at $70,261,000 with a net loss of $116,769,000, and the company was unprofitable over its most recent full fiscal year despite posting 25.3% annual revenue growth. At the same ticker (AI), the executive's five prior sell transactions have not produced well-timed outcomes; his cross-ticker track record shows a 26.67% well-timed sell rate over 20 prior open-market sales, which exceeds his single-ticker performance at AI. The stock has declined 5.3% in the past 30 days and 28.6% over the past 90 days, and is currently trading at $17.24—near the transaction price—against a deteriorating fundamental backdrop.