Updated: May 19, 2026

Jeffrey M Jonas

Generation Bio Co.SEC CIK: 0001042021
Estimated Net Worth
$90.7 Million
Last Updated: May 19, 2026 11:07 PM EST

Transaction Summary

Total Transactions61
Buy-Sell Ratio4.00
Buy Transactions44
Sell Transactions11

Transaction Volume

Total Volume$109.68M
Net Volume-$106.67M
Buy Volume$1.5M
Sell Volume$108.18M

Trade Analysis

AVG Trade Size$1.8M
Largest Trade$35.02M
Most Active MonthJun
Most Active Year2019

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

Jeffrey M Jonas has an estimated net worth of $90.7 Million. This is based on reported shares across multiple companies, which include Generation Bio Co., Karuna Therapeutics, Inc., ISIS PHARMACEUTICALS INC, Sage Therapeutics, Inc., and COMPASS Pathways plc.



2019 was Jeffrey M Jonas's most active year for acquiring shares with 11 total transactions. Jeffrey M Jonas's most active month to acquire stocks was the month of May. 2019 was Jeffrey M Jonas's most active year for disposing of shares, totalling 26 transactions. Jeffrey M Jonas's most active month to dispose stocks was the month of April. 2019 saw Jeffrey M Jonas paying a total of $558,720.00 for 273,450 shares, this is the most they've acquired in one year. In 2017 Jeffrey M Jonas cashed out on 396,000 shares for a total of $35,079,375.61, their largest year based on trade value.

Holdings & Transactions

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