Skip to main content

Anderson Karen M.

In the past year, 3 open-market sale filings worth $6.50M and no purchases.

Current role at each company

Open-market trades in the past year

Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.

Bought
–
0 filings
Sold
$6.50M
3 filings
Net
−$6.50M
Bought minus sold
Companies
1
With open-market trades

Trades

Every Form 4 that lists Anderson Karen M. as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.

CNTA Centessa Pharmaceuticals plc

Chief People Officer7 trades

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Mar 27, 2026 (view filing)Mar 261 dayAnderson Karen M.Chief People OfficerSSale−41.1K$30.12−$1.24M−39.8%62.1K after10b5-1
Mar 18, 2026 (view filing)Mar 16-172 daysAnderson Karen M.Chief People OfficerSSale−74.8K$28.20−$2.11M−54.6%62.1K after2 lots10b5-1
Mar 16, 2026 (view filing)Mar 133 daysAnderson Karen M.Chief People OfficerSSale−120.0K$26.25−$3.15M−65.9%62.1K afterAmended2 lots10b5-1
Feb 10, 2025 (view filing)Feb 7-103 daysAnderson Karen M.Chief People OfficerSSale−31.0K$19.03−$589.1K−36.3%54.3K after2 lots10b5-1
Feb 4, 2025 (view filing)Feb 31 dayAnderson Karen M.Chief People OfficerSSale−6.47K$16.86−$109.1K−10.6%54.3K after10b5-1
Dec 17, 2024 (view filing)Dec 13-174 daysAnderson Karen M.Chief People OfficerSSale−16.5K$17.21−$284.0K−18.7%71.5K after2 lots10b5-1
Mar 26, 2024 (view filing)Mar 251 dayAnderson Karen M.Chief People OfficerSSale−51.2K$11.89−$608.2K−41.7%71.5K after2 lots10b5-1

MIME Mimecast Ltd

Chief Human Resources Officer3 trades

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Nov 3, 2021 (view filing)Nov 12 daysAnderson Karen M.Chief Human Resources OfficerSSale−7.81K$75.10−$586.7K−100.0%0 after3 lots
Oct 4, 2021 (view filing)Oct 13 daysAnderson Karen M.Chief Human Resources OfficerSSale−1.86K$64.71−$120.3K−100.0%0 after2 lots
Aug 12, 2021 (view filing)Aug 102 daysAnderson Karen M.Chief Human Resources OfficerSSale−17.5K$58.57−$1.02M−100.0%0 after2 lots