Updated: May 19, 2026

Joseph Klein III

IONSIONIS PHARMACEUTICALS INCSEC CIK: 0001206369
Estimated Net Worth
$15.7 Million
Last Updated: May 19, 2026 11:10 PM EST

Transaction Summary

Total Transactions207
Buy-Sell Ratio1.68
Buy Transactions124
Sell Transactions74

Transaction Volume

Total Volume$19.41M
Net Volume-$13.95M
Buy Volume$2.73M
Sell Volume$16.68M

Trade Analysis

AVG Trade Size$93.78K
Largest Trade$1.77M
Most Active MonthJul
Most Active Year2006

Trading Sentiment

OverallBearish
Recent TradeSelling
Last 90 Days0 Trades
ConvictionNone

Net Worth & Trading Activity Over Time

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Monthly Trading Pattern

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Past Insider Trading and Trends

Joseph Klein III has an estimated net worth of $15.7 Million. This is based on reported shares across multiple companies, which include GENAISSANCE PHARMACEUTICALS INC, SAVIENT PHARMACEUTICALS INC, BIOMARIN PHARMACEUTICAL INC, IONIS PHARMACEUTICALS INC, AKCEA THERAPEUTICS, INC., NPS PHARMACEUTICALS INC, PDL BIOPHARMA, INC., CLINICAL DATA INC, OSI PHARMACEUTICALS INC, and GUILFORD PHARMACEUTICALS INC.



2007 was Joseph Klein III's most active year for acquiring shares with 41 total transactions. Joseph Klein III's most active month to acquire stocks was the month of June. 2008 was Joseph Klein III's most active year for disposing of shares, totalling 63 transactions. Joseph Klein III's most active month to dispose stocks was the month of February. 2026 saw Joseph Klein III paying a total of $2,009,155.89 for 48,432 shares, this is the most they've acquired in one year. In 2025 Joseph Klein III cashed out on 136,000 shares for a total of $4,320,000.00, their largest year based on trade value.

Holdings & Transactions

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