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EdgarHawk

Anderson Karen M.

Chief People Officer

Officer
4 filings analyzed · 1 company · Latest 2026-03-27

Companies

Company Buys Sells Direction
Centessa Pharmaceuticals plc CNTA 0 13 Net selling

Activity

March 2026
high
Sell
41,076 shares
$1,237,382
Significance 6/10

Chief People Officer Karen M. Anderson sold 41,076 shares of CNTA at $30.12 (total $1.2M), reducing stake 39.8% to 62,085 shares.

Anderson sold 41,076 shares at $30.12 on 2026-03-26, the fourth sale within a 10-day span (prior sales on 2026-03-17, 2026-03-16, and twice on 2026-03-13). This concentrated selling activity at prices near the 52-week high of $29.91 represents a substantial reduction in her holdings (from 103,161 to 62,085 shares, a -39.8% decrease). Her cross-ticker track record shows 8 prior sells with a 100.00% well-timed rate at the 90-day mark (average 90d return -29.4%), and at CNTA specifically, her sole measurable historical sale on 2025-02-10 posted -35.2% 90-day return. Centessa faces significant operational headwinds: the company reported $0.00 latest-quarter revenue, a net loss of $-54,891,000.00, and -100.0% annual revenue growth, with a $3.9B market cap despite ongoing unprofitability. The rapid succession of sales by the Chief People Officer amid deteriorating fundamentals and at elevated valuations warrants investor attention.

high
Sell
74,811 shares
$2,109,180
Significance 7/10

Chief People Officer Karen M. Anderson sold 74,811 shares (54.6% of holdings) at $28.19 avg on 2026-03-16/17 ($2.1M)

Anderson executed 2 separate sales totaling 74,811 shares for $2,109,179.58 on March 16–17, reducing her stake from 136,896 shares to 62,085 shares—a 54.6% reduction in holdings. Her cross-ticker track record shows 6 prior sells with a 100.00% well-timed rate at the 90-day mark, and at CNTA specifically, all 3 prior measurable sales (2025-02-10, 2025-02-07, 2024-03-25) were well-timed, with 90-day declines ranging from -21.9% to -35.2%. Against this backdrop, the magnitude of this divestment (nearly 75K shares) by the Chief People Officer is notable. The company is unprofitable with $-54,891,000.00 net income and -100.0% annual revenue growth, creating a fundamental backdrop where pattern-consistent insider selling warrants investor attention—particularly given the concentration and speed of this reduction relative to her prior activity.

high
Sell
120,029 shares
$3,150,673
Significance 7/10

CPO Karen M. Anderson sold 120,029 shares (120.0K) at blended average $26.25 for $3,150,672.76 (-65.9% of holdings)

Anderson Karen M., Chief People Officer, executed 2 separate sales totaling 120,029 shares for $3,150,672.76, reducing her holdings by -65.9% from 182,114 shares to 62,085 shares. Her prior 4 sales at CNTA all posted negative 90-day returns (ranging -21.9% to -35.2%), establishing a consistent pattern where the stock subsequently declined after her sales. Against current company fundamentals (Revenue $0.00 latest quarter, Net income $-54,891,000.00, Annual revenue growth -100.0%), this substantial divestiture represents a material reduction in her stake at an unprofitable biotech. The timing and scale of this sale, coupled with her prior well-timed exit pattern at this ticker (4 of 4 prior sells negative at 90 days), warrant close monitoring of the company's near-term trajectory and insider confidence indicators.

February 2025
high
Sell
30,955 shares
$588,944
Significance 6/10

Chief People Officer Karen M. Anderson sold 30,955 shares for $588,943.54; -36.3% of holdings. Prior CNTA sales both well-timed at 90d mark.

Anderson Karen M., Chief People Officer, executed 2 separate sales totaling 30,955 shares for $588,943.54, reducing her holdings from 85,277 to 54,322 shares (-36.3% of pre-transaction holdings). The sales occurred at an average price of $19.03, near the 52-week high of $19.03, compared to a current price of $17.79. Her prior 2 sales at CNTA in March 2024 were both well-timed at the 90-day mark, with negative returns of -18.8% and -22.5% respectively, suggesting a pattern of selling ahead of declines at this ticker. The company remains unprofitable with net income of $-42,566,000.00, providing context for elevated scrutiny of insider liquidity decisions. The timing of this sale at peak price levels, paired with the insider's demonstrated pattern of well-timed sales at this specific ticker, warrants monitoring of subsequent price action.

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