InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
0
T+90 hit rate
9%
T+90 mean return
-21.7%
Across 11 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Discover the detailed record of transactions filed by Malecek Michael J, Executive. Officer active across 1 company, notably Prothena CORP Public Ltd Co. Cumulatively, 13 filings have been recorded. History available since 27 October 2021. The latest transaction was disclosed on 28 July 2025 (Attribution). Regulator: SEC (Form 4). The full history is accessible without signup.
Declarations13 total
80,000 shares0Ordinary Shares, par value $0.01 per shareSEC:0000905148-25-002657:0
5,000 shares@ US$10.273.2% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-23-001024:0
5,000 shares@ US$10.273.0% of flowOrdinary Shares, par value $0.01 per shareSEC:0000905148-23-000803:0
5,000 shares@ US$10.273.0% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-036291:0
5,000 shares@ US$10.273.0% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-032003:0
5,000 shares@ US$10.273.1% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-027617:0
5,000 shares@ US$10.273.0% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-021747:0
5,000 shares@ US$10.273.1% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-23-015527:0
15,000 shares@ US$10.279.3% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-23-005290:0
5,000 shares@ US$10.273.2% of flowOrdinary Shares, par value $0.01 per shareSEC:0001140361-22-044321:0
65,000 shares@ US$10.2742.9% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-22-018925:0
10,000 shares@ US$10.270.018% mcap25.3% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-21-020909:0
10,000 shares@ US$10.270.017% mcap24.7% of flowOrdinary Shares, par value $0.01 per shareSEC:0001567619-21-019011:0
13 of 13 declarations
About Malecek Michael J
Malecek Michael J is an executive at Prothena Corp Public Ltd Co, a biopharmaceutical company. He contributes to the strategic and operational direction of the company, aiming to develop innovative treatments.
