Malecek Michael J
SEC CIK 1779336 · EDGAR
BoughtSold
Companies
| Ticker | Company | Title | Holding | Bought | Sold | Trades | First | Last |
|---|---|---|---|---|---|---|---|---|
| PRTA | PROTHENA CORP PUBLIC LTD CO | See Remarks | 80.0K | — | $9.34M | 25 | 2021-10-27 | 2025-07-28 |
Most active insiders at PRTA, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | SCULLY WILLIAM P | 10% | $4.96M | — |
| 2 | Isaacs Michael John | GC, Company Sec | — | $71.1K |
| 3 | Kingston Anne Evans | Chief Strategy Off | — | $64.9K |
| 4 | Swanson Chad J. | Chief Development Off | — | — |
| 5 | Smith Brandon S. | COO | — | — |
| 6 | Zago Wagner M. | CSO | — | — |
| 7 | Kinney Gene G. | Pres, CEO, Dir | — | — |
| 8 | Walker Karin L | CAO | — | — |
| 9 | Nguyen Tran | CFO, Chief Strategy Off | — | — |
Malecek Michael J made no open-market trades at PRTA in the last 12 months.
Transactions 25
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-07-30 | 2025-07-28 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | A - Grant | $0.00 | +80.0K | 80.0K | New | $0 | |
| DMT | 2023-09-27 | 2023-09-27 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $47.37 | -5,000 | 0 | -100% | -$236.9K |
| DT | 2023-09-27 | 2023-09-27 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DMT | 2023-08-30 | 2023-08-30 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $55.02 | -5,000 | 14 | -100% | -$275.1K |
| DT | 2023-08-30 | 2023-08-30 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DMT | 2023-07-26 | 2023-07-26 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $62.33 | -5,000 | 620 | -89% | -$311.6K |
| DT | 2023-07-26 | 2023-07-26 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DMT | 2023-06-28 | 2023-06-28 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $69.82 | -5,000 | 3,760 | -57% | -$349.1K |
| DT | 2023-06-28 | 2023-06-28 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DMT | 2023-05-31 | 2023-05-31 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $64.64 | -5,000 | 0 | -100% | -$323.2K |
| DT | 2023-05-31 | 2023-05-31 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DT | 2023-04-28 | 2023-04-26 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DMT | 2023-04-28 | 2023-04-26 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $53.45 | -5,000 | 320 | -94% | -$267.3K |
| DMT | 2023-03-31 | 2023-03-29 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $49.02 | -5,000 | 2,266 | -69% | -$245.1K |
| DT | 2023-03-31 | 2023-03-29 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| D | 2023-03-17 | 2023-03-15 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +15.0K | 15.0K | New | +$154.1K |
| DM | 2023-03-17 | 2023-03-15 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $48.44 | -15.0K | 8,564 | -64% | -$726.6K |
| DM | 2022-12-02 | 2022-11-30 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $62.28 | -5,000 | 0 | -100% | -$311.4K |
| D | 2022-12-02 | 2022-11-30 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DM | 2022-10-28 | 2022-10-26+ | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | M - OptEx | $10.27 | +85.0K | 20.0K | New | +$873.0K |
| DM | 2022-10-28 | 2022-10-26+ | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | CLO | S - Sale+OE | $60.71 | -85.0K | 0 | -100% | -$5.16M |
| D | 2021-11-19 | 2021-11-19 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | See Remarks | S - Sale+OE | $55.00 | -10.0K | 0 | -100% | -$550.0K |
| D | 2021-11-19 | 2021-11-19 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | See Remarks | M - OptEx | $10.27 | +10.0K | 10.0K | New | +$102.7K |
| DM | 2021-10-29 | 2021-10-27 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | See Remarks | S - Sale+OE | $58.52 | -10.0K | 0 | -100% | -$585.2K |
| D | 2021-10-29 | 2021-10-27 | PRTA | PROTHENA CORP PUBLIC LTD CO | Malecek Michael J | See Remarks | M - OptEx | $10.27 | +10.0K | 10.0K | New | +$102.7K |
Purchase Sale Sale after option exercise All abbreviations