Michael J Malecek $PRTA SEC Form 4 Insider Trading

Michael J Malecek has filed a total of 36 insider trades in $PRTA since 2021. Their most recent trade was a sale of 404 shares, made on Sep 27, 2023. Their largest trade was a sale of 29,572 shares, made on Oct 26, 2022. We estimate that they now own 80,000 shares of $PRTA, worth an estimated $671,200.

Insider Trading at $PRTA

There have been a total of 274 insider trades reported at $PRTA since 2021, with 1.6 million shares purchased and 8.6 million shares sold. The most active insider traders in $PRTA stock have been Karin L Walker, Michael J Malecek, and Tran Nguyen. The most recent trade was a sale of 3.3 million shares reported by Capital, LLC EcoR1 (None), made on May 02, 2025.

$PRTA Executives and Stock Owners with Insider Trades

• Karin L Walker, Chief Accounting Officer

• Michael J Malecek, Chief Legal Officer

• Tran Nguyen, Chief Strategy Officer and CFO

• Carol D. Karp, Chief Regulatory Officer

• Gene G. Kinney, President and CEO

• Hideki Garren, Chief Medical Officer

• Brandon S. Smith, Chief Operating Officer

• Wagner M. Zago, Chief Scientific Officer

• Michael J Malecek, See Remarks

*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.