PRTA
insider transactionsPROTHENA CORP PUBLIC LTD CO — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 30d
+345.0K
345.0K buy · 0 sell
Net value · 30d
$3.1M
$3.1M in · $0 out
Sentiment · 30d
Net buying
100% buying · 0% selling
Open-market trades · 30d
5
345.0K buy · 0 sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Buy·P
10% Owner
$158.0K
20.0K sh · $7.90
Own +3%
-
Other·G
10% Owner
$0
325.0K sh
Own -31%
-
Buy·P
10% Owner
$1.0M
125.0K sh · $8.17
Own +13%
-
Buy·P
10% Owner
$465.3K
50.0K sh · $9.31
Own +6%
-
Buy·P
10% Owner
$471.3K
50.0K sh · $9.43
Own +6%
-
Buy·P
10% Owner
$981.3K
100.0K sh · $9.81
Own +14%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 16, 2026 | William P Scully | Buy P | 20.0K | $158.0K |
| Jun 15, 2026 | William P Scully | Other G | 325.0K | $0 |
| Jun 11, 2026 | William P Scully | Buy P | 125.0K | $1.0M |
| Jun 4, 2026 | William P Scully | Buy P | 50.0K | $465.3K |
| Jun 2, 2026 | William P Scully | Buy P | 50.0K | $471.3K |
| May 22, 2026 | William P Scully | Buy P | 100.0K | $981.3K |
About PRTA insider trading
This page tracks insider transactions for PROTHENA CORP PUBLIC LTD CO (PRTA) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.