PRTA PROTHENA CORP PUBLIC LTD CO
Nasdaq · SEC CIK 1559053 · EDGAR
- Bought, last 12 months
- $4.96M 10 purchases by 1 insiders
- Sold, last 12 months
- $136.0K 2 sales by 2 insiders
- Filings on record
- 215 since 2021-07-12, latest 2026-09-21 16:23
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| SCULLY WILLIAM P | 10% | $4.96M | — |
| Isaacs Michael John | GC, Company Sec | — | $71.1K |
| Kingston Anne Evans | Chief Strategy Off | — | $64.9K |
| Swanson Chad J. | Chief Development Off | — | — |
| Smith Brandon S. | COO | — | — |
| Zago Wagner M. | CSO | — | — |
| Kinney Gene G. | Pres, CEO, Dir | — | — |
| Walker Karin L | CAO | — | — |
| Nguyen Tran | CFO, Chief Strategy Off | — | — |
Transactions 243
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2023-06-07 | 2023-06-07 | PRTA | Karp Carol D. | Chief Regulatory Off | M - OptEx | $13.19 | +20.0K | 5,000 | New | +$263.7K |
| DMT | 2023-06-07 | 2023-06-07 | PRTA | Karp Carol D. | Chief Regulatory Off | S - Sale+OE | $71.05 | -20.0K | 17.0K | -54% | -$1.42M |
| DMT | 2023-06-07 | 2023-06-07 | PRTA | Zago Wagner M. | CSO | S - Sale+OE | $71.06 | -19.0K | 0 | -100% | -$1.35M |
| DMT | 2023-06-07 | 2023-06-07 | PRTA | Zago Wagner M. | CSO | M - OptEx | $26.09 | +19.0K | 19.0K | New | +$495.8K |
| DMT | 2023-05-31 | 2023-05-31 | PRTA | Malecek Michael J | CLO | S - Sale+OE | $64.64 | -5,000 | 0 | -100% | -$323.2K |
| DT | 2023-05-31 | 2023-05-31 | PRTA | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DMT | 2023-05-19 | 2023-05-19 | PRTA | Walker Karin L | CAO | S - Sale+OE | $74.00 | -5,000 | 0 | -100% | -$370.0K |
| DT | 2023-05-19 | 2023-05-19 | PRTA | Walker Karin L | CAO | M - OptEx | $15.04 | +5,000 | 5,000 | New | +$75.2K |
| DMT | 2023-05-17 | 2023-05-17 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $26.15 | +95.0K | 48.2K | New | +$2.48M |
| DMT | 2023-05-17 | 2023-05-17 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $73.99 | -95.0K | 3,300 | -97% | -$7.03M |
| DMT | 2023-05-17 | 2023-05-17 | PRTA | Kinney Gene G. | Pres, CEO | S - Sale+OE | $73.69 | -45.0K | 27.7K | -62% | -$3.32M |
| DT | 2023-05-17 | 2023-05-17 | PRTA | Kinney Gene G. | Pres, CEO | M - OptEx | $29.81 | +45.0K | 57.8K | +352% | +$1.34M |
| DT | 2023-05-05 | 2023-05-03 | PRTA | Selkoe Dennis J. | Dir | S - Sale+OE | $57.00 | -15.0K | 2,845 | -84% | -$855.0K |
| DMT | 2023-05-05 | 2023-05-03 | PRTA | Selkoe Dennis J. | Dir | M - OptEx | $18.07 | +15.0K | 17.8K | +527% | +$271.1K |
| DT | 2023-04-28 | 2023-04-26 | PRTA | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DMT | 2023-04-28 | 2023-04-26 | PRTA | Malecek Michael J | CLO | S - Sale+OE | $53.45 | -5,000 | 320 | -94% | -$267.3K |
| DMT | 2023-04-21 | 2023-04-19 | PRTA | Walker Karin L | CAO | S - Sale+OE | $52.89 | -5,000 | 2,083 | -71% | -$264.5K |
| DT | 2023-04-21 | 2023-04-19 | PRTA | Walker Karin L | CAO | M - OptEx | $15.04 | +5,000 | 5,000 | New | +$75.2K |
| DMT | 2023-03-31 | 2023-03-29 | PRTA | Malecek Michael J | CLO | S - Sale+OE | $49.02 | -5,000 | 2,266 | -69% | -$245.1K |
| DT | 2023-03-31 | 2023-03-29 | PRTA | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| DM | 2023-03-22 | 2023-03-20 | PRTA | Walker Karin L | CAO | S - Sale+OE | $47.72 | -5,000 | 0 | -100% | -$238.6K |
| D | 2023-03-22 | 2023-03-20 | PRTA | Walker Karin L | CAO | M - OptEx | $15.04 | +5,000 | 5,000 | New | +$75.2K |
| D | 2023-03-17 | 2023-03-15 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| DM | 2023-03-17 | 2023-03-15 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $48.43 | -10.0K | 8,398 | -54% | -$484.3K |
| D | 2023-03-17 | 2023-03-15 | PRTA | Garren Hideki | Chief Medical Off | M - OptEx | $24.90 | +12.0K | 12.0K | New | +$298.8K |
| DM | 2023-03-17 | 2023-03-15 | PRTA | Garren Hideki | Chief Medical Off | S - Sale+OE | $48.41 | -12.0K | 0 | -100% | -$580.9K |
| D | 2023-03-17 | 2023-03-15 | PRTA | Malecek Michael J | CLO | M - OptEx | $10.27 | +15.0K | 15.0K | New | +$154.1K |
| DM | 2023-03-17 | 2023-03-15 | PRTA | Malecek Michael J | CLO | S - Sale+OE | $48.44 | -15.0K | 8,564 | -64% | -$726.6K |
| D | 2023-03-17 | 2023-03-15 | PRTA | Walker Karin L | CAO | M - OptEx | $15.04 | +20.0K | 20.0K | New | +$300.8K |
| DM | 2023-03-17 | 2023-03-15 | PRTA | Walker Karin L | CAO | S - Sale+OE | $48.41 | -20.0K | 10.6K | -65% | -$968.3K |
| D | 2023-02-17 | 2023-02-15 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| DM | 2023-02-17 | 2023-02-15 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $53.34 | -10.0K | 3,864 | -72% | -$533.4K |
| DM | 2023-01-20 | 2023-01-18 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $55.53 | -10.0K | 3,200 | -76% | -$555.3K |
| D | 2023-01-20 | 2023-01-18 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| D | 2023-01-12 | 2023-01-10 | PRTA | Cooke Shane | Dir | S - Sale+OE | $52.92 | -5,000 | 0 | -100% | -$264.6K |
| D | 2023-01-12 | 2023-01-10 | PRTA | Cooke Shane | Dir | M - OptEx | $6.41 | +5,000 | 5,000 | New | +$32.0K |
| D | 2023-01-05 | 2023-01-05 | PRTA | COLLIER RICHARD T | Dir | S - Sale+OE | $52.67 | -5,000 | 1,219 | -80% | -$263.4K |
| D | 2023-01-05 | 2023-01-05 | PRTA | COLLIER RICHARD T | Dir | M - OptEx | $6.41 | +5,000 | 6,219 | +410% | +$32.0K |
| D | 2023-01-05 | 2023-01-03 | PRTA | Ekman Lars | Dir, COB of the Board | M - OptEx | $6.41 | +15.8K | 16.1K | +6,516% | +$101.5K |
| DM | 2023-01-05 | 2023-01-03 | PRTA | Ekman Lars | Dir, COB of the Board | S - Sale+OE | $55.98 | -15.8K | 3,148 | -83% | -$886.4K |
| DM | 2022-12-23 | 2022-12-21 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $58.97 | -10.0K | 10.0K | -50% | -$589.7K |
| D | 2022-12-23 | 2022-12-21 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| DM | 2022-12-12 | 2022-12-12 | PRTA | Cooke Shane | Dir | S - Sale+OE | $61.04 | -5,000 | 4,668 | -52% | -$305.2K |
| D | 2022-12-12 | 2022-12-12 | PRTA | Cooke Shane | Dir | M - OptEx | $6.41 | +5,000 | 5,000 | New | +$32.0K |
| DM | 2022-12-05 | 2022-12-05 | PRTA | COLLIER RICHARD T | Dir | S - Sale+OE | $62.07 | -5,000 | 1,219 | -80% | -$310.4K |
| D | 2022-12-05 | 2022-12-05 | PRTA | COLLIER RICHARD T | Dir | M - OptEx | $6.41 | +5,000 | 6,219 | +410% | +$32.0K |
| DM | 2022-12-02 | 2022-11-30 | PRTA | Malecek Michael J | CLO | S - Sale+OE | $62.28 | -5,000 | 0 | -100% | -$311.4K |
| D | 2022-12-02 | 2022-11-30 | PRTA | Malecek Michael J | CLO | M - OptEx | $10.27 | +5,000 | 5,000 | New | +$51.4K |
| D | 2022-12-02 | 2022-12-01 | PRTA | Garren Hideki | Chief Medical Off | S - Sale+OE | $62.51 | -4,000 | 0 | -100% | -$250.0K |
| D | 2022-12-02 | 2022-12-01 | PRTA | Garren Hideki | Chief Medical Off | M - OptEx | $24.90 | +4,000 | 4,000 | New | +$99.6K |
| DM | 2022-12-02 | 2022-12-01 | PRTA | Ekman Lars | Dir, COB of the Board | S - Sale+OE | $61.60 | -15.8K | 6,264 | -72% | -$975.4K |
| D | 2022-12-02 | 2022-12-01 | PRTA | Ekman Lars | Dir, COB of the Board | M - OptEx | $6.41 | +15.8K | 16.1K | +6,516% | +$101.5K |
| DM | 2022-11-25 | 2022-11-23 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $61.09 | -10.0K | 4,669 | -68% | -$610.9K |
| D | 2022-11-25 | 2022-11-23 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| DM | 2022-11-18 | 2022-11-18 | PRTA | Walker Karin L | CAO | S - Sale+OE | $57.07 | -10.0K | 226 | -98% | -$570.7K |
| D | 2022-11-18 | 2022-11-18 | PRTA | Walker Karin L | CAO | M - OptEx | $15.04 | +10.0K | 10.0K | New | +$150.4K |
| DM | 2022-11-10 | 2022-11-10 | PRTA | Cooke Shane | Dir | S - Sale+OE | $56.17 | -5,000 | 0 | -100% | -$280.8K |
| D | 2022-11-10 | 2022-11-10 | PRTA | Cooke Shane | Dir | M - OptEx | $6.41 | +5,000 | 5,000 | New | +$32.0K |
| DM | 2022-11-09 | 2022-11-07 | PRTA | COLLIER RICHARD T | Dir | S - Sale+OE | $55.62 | -5,000 | 1,219 | -80% | -$278.1K |
| D | 2022-11-09 | 2022-11-07 | PRTA | COLLIER RICHARD T | Dir | M - OptEx | $6.41 | +5,000 | 6,219 | +410% | +$32.0K |
| D | 2022-11-03 | 2022-11-01 | PRTA | Ekman Lars | Dir, COB of the Board | M - OptEx | $6.41 | +15.8K | 16.1K | +6,516% | +$101.5K |
| DM | 2022-11-03 | 2022-11-01 | PRTA | Ekman Lars | Dir, COB of the Board | S - Sale+OE | $62.89 | -15.8K | 6,933 | -70% | -$995.7K |
| DM | 2022-11-03 | 2022-11-01 | PRTA | Garren Hideki | Chief Medical Off | S - Sale+OE | $61.90 | -4,000 | 511 | -89% | -$247.6K |
| D | 2022-11-03 | 2022-11-01 | PRTA | Garren Hideki | Chief Medical Off | M - OptEx | $24.90 | +4,000 | 4,000 | New | +$99.6K |
| DM | 2022-10-28 | 2022-10-26+ | PRTA | Malecek Michael J | CLO | M - OptEx | $10.27 | +85.0K | 20.0K | New | +$873.0K |
| DM | 2022-10-28 | 2022-10-26+ | PRTA | Malecek Michael J | CLO | S - Sale+OE | $60.71 | -85.0K | 0 | -100% | -$5.16M |
| D | 2022-10-26 | 2022-10-24 | PRTA | Walker Karin L | CAO | M - OptEx | $15.04 | +20.0K | 20.0K | New | +$300.8K |
| DM | 2022-10-26 | 2022-10-24 | PRTA | Walker Karin L | CAO | S - Sale+OE | $57.23 | -20.0K | 0 | -100% | -$1.14M |
| DM | 2022-10-21 | 2022-10-19 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $56.44 | -10.0K | 10.4K | -49% | -$564.4K |
| D | 2022-10-21 | 2022-10-19 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| DM | 2022-10-12 | 2022-10-10 | PRTA | Cooke Shane | Dir | S - Sale+OE | $55.91 | -5,000 | 2,676 | -65% | -$279.6K |
| D | 2022-10-12 | 2022-10-10 | PRTA | Cooke Shane | Dir | M - OptEx | $6.41 | +5,000 | 5,000 | New | +$32.0K |
| DM | 2022-10-07 | 2022-10-05 | PRTA | COLLIER RICHARD T | Dir | S - Sale+OE | $57.92 | -5,000 | 5,329 | -48% | -$289.6K |
| D | 2022-10-07 | 2022-10-05 | PRTA | COLLIER RICHARD T | Dir | M - OptEx | $6.41 | +5,000 | 6,219 | +410% | +$32.0K |
| D | 2022-10-05 | 2022-10-03 | PRTA | Garren Hideki | Chief Medical Off | S - Sale+OE | $60.90 | -4,000 | 0 | -100% | -$243.6K |
| D | 2022-10-05 | 2022-10-03 | PRTA | Garren Hideki | Chief Medical Off | M - OptEx | $24.90 | +4,000 | 4,000 | New | +$99.6K |
| DM | 2022-10-05 | 2022-10-03 | PRTA | Ekman Lars | Dir, COB of the Board | S - Sale+OE | $61.52 | -15.8K | 12.6K | -56% | -$974.1K |
| D | 2022-10-05 | 2022-10-03 | PRTA | Ekman Lars | Dir, COB of the Board | M - OptEx | $6.41 | +15.8K | 16.1K | +6,516% | +$101.5K |
| DM | 2022-09-30 | 2022-09-28 | PRTA | Kinney Gene G. | Pres, CEO | S - Sale+OE | $53.38 | -16.4K | 25.1K | -39% | -$876.0K |
| D | 2022-09-30 | 2022-09-28 | PRTA | Kinney Gene G. | Pres, CEO | M - OptEx | $6.41 | +16.4K | 29.2K | +128% | +$105.2K |
| D | 2022-09-30 | 2022-09-28 | PRTA | Cooke Shane | Dir | M - OptEx | $6.41 | +10.0K | 10.0K | New | +$64.1K |
| D | 2022-09-30 | 2022-09-28 | PRTA | Cooke Shane | Dir | S - Sale+OE | $48.09 | -10.0K | 0 | -100% | -$480.9K |
| D | 2022-09-30 | 2022-09-28 | PRTA | Ekman Lars | Dir, COB of the Board | M - OptEx | $6.41 | +31.7K | 31.9K | +13,031% | +$203.0K |
| D | 2022-09-30 | 2022-09-28 | PRTA | Ekman Lars | Dir, COB of the Board | S - Sale+OE | $48.09 | -31.7K | 243 | -99% | -$1.52M |
| D | 2022-09-30 | 2022-09-28 | PRTA | COLLIER RICHARD T | Dir | S - Sale+OE | $48.09 | -25.0K | 1,219 | -95% | -$1.20M |
| D | 2022-09-30 | 2022-09-28 | PRTA | COLLIER RICHARD T | Dir | M - OptEx | $6.41 | +25.0K | 26.2K | +2,051% | +$160.2K |
| D | 2022-09-23 | 2022-09-21 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| D | 2022-09-23 | 2022-09-21 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $30.75 | -10.0K | 3,200 | -76% | -$307.5K |
| D | 2022-09-23 | 2022-09-21 | PRTA | Kinney Gene G. | Pres, CEO | S - Sale+OE | $32.02 | -2,720 | 12.8K | -18% | -$87.1K |
| D | 2022-09-23 | 2022-09-21 | PRTA | Kinney Gene G. | Pres, CEO | M - OptEx | $6.41 | +2,720 | 15.5K | +21% | +$17.4K |
| D | 2022-09-16 | 2022-09-15 | PRTA | Garren Hideki | Chief Medical Off | M - OptEx | $24.90 | +4,000 | 4,000 | New | +$99.6K |
| D | 2022-09-16 | 2022-09-15 | PRTA | Garren Hideki | Chief Medical Off | S - Sale+OE | $30.00 | -4,000 | 0 | -100% | -$120.0K |
| D | 2022-08-26 | 2022-08-24 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | S - Sale+OE | $30.17 | -10.0K | 3,200 | -76% | -$301.7K |
| D | 2022-08-26 | 2022-08-24 | PRTA | Nguyen Tran | CFO, Chief Strategy Off | M - OptEx | $6.73 | +10.0K | 13.2K | +312% | +$67.3K |
| D | 2022-08-19 | 2022-08-17 | PRTA | Kinney Gene G. | Pres, CEO | M - OptEx | $6.41 | +2,181 | 15.0K | +17% | +$14.0K |
| D | 2022-08-19 | 2022-08-17 | PRTA | Kinney Gene G. | Pres, CEO | S - Sale+OE | $32.03 | -2,181 | 12.8K | -15% | -$69.9K |
| DM | 2022-08-12 | 2022-08-10+ | PRTA | Kinney Gene G. | Pres, CEO | M - OptEx | $6.41 | +34.9K | 26.4K | New | +$223.9K |
| DM | 2022-08-12 | 2022-08-10+ | PRTA | Kinney Gene G. | Pres, CEO | S - Sale+OE | $32.16 | -34.9K | 12.8K | -73% | -$1.12M |
| DM | 2022-08-05 | 2022-08-04+ | PRTA | Kinney Gene G. | Pres, CEO | S - Sale+OE | $32.51 | -42.5K | 12.8K | -77% | -$1.38M |
| DM | 2022-08-05 | 2022-08-04+ | PRTA | Kinney Gene G. | Pres, CEO | M - OptEx | $6.41 | +42.5K | 33.7K | New | +$272.2K |
Purchase Sale Sale after option exercise All abbreviations