Prothena insider buys 20,000 PRTA shares
PROTHENA CORP PUBLIC LTD CO large shareholder William P. Scully reported an open-market purchase of 20,000 ordinary shares of PRTA.
Rhea-AI Filing Summary
PROTHENA CORP PUBLIC LTD CO large shareholder William P. Scully reported an open-market purchase of 20,000 ordinary shares of PRTA. The transaction occurred on June 16, 2026 at a weighted average price of $7.8995 per share, with individual trades between $7.8600 and $7.9312.
After this purchase, Scully directly holds 756,000 ordinary shares. The filing also shows indirect holdings of 52,000 shares held by his spouse and 80,000 shares held by Manatee Equity Fund LLC, for which he disclaims beneficial ownership except to the extent of his pecuniary interest.
Positive
- None.
Negative
- None.
Insider Trade Summary
Net Buyer: 20,000 shares
Net Buy
3 txns
Insider
SCULLY WILLIAM P
Role
10% Owner
Bought
20,000 shs ($158K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Purchase | Ordinary Shares, par value $0.01 per share | 20,000 | $7.8995 | $158K |
| holding | Ordinary Shares, par value $0.01 per share | -- | -- | -- |
| holding | Ordinary Shares, par value $0.01 per share | -- | -- | -- |
Holdings After Transaction:
Ordinary Shares, par value $0.01 per share — 756,000 shares (Direct);
Ordinary Shares, par value $0.01 per share — 80,000 shares (Indirect, By Manatee Equity Fund LLC);
Ordinary Shares, par value $0.01 per share — 52,000 shares (Indirect, By Spouse)
Footnotes (2)
- F1. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $7.8600 to $7.9312, inclusive. The reporting person undertakes to provide to Prothena Corp Public Ltd Co, any security holder of Prothena Corp Public Ltd Co, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.
- F2. The reporting person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.
Key Figures
Open-market purchase: 20,000 shares
Purchase price: $7.8995 per share
Price range: $7.8600–$7.9312 per share
+3 more
6 metrics
Open-market purchase
20,000 shares
Ordinary shares bought on June 16, 2026
Purchase price
$7.8995 per share
Weighted average price for 20,000 shares
Price range
$7.8600–$7.9312 per share
Range of individual trade prices
Direct holdings after trade
756,000 shares
Ordinary shares held directly by Scully
Indirect holdings by spouse
52,000 shares
Ordinary shares held indirectly by spouse
Indirect holdings via LLC
80,000 shares
Ordinary shares held by Manatee Equity Fund LLC
Key Terms
open-market purchase, weighted average price, beneficial ownership, pecuniary interest, +1 more
5 terms
open-market purchase financial
"transaction_action: "open-market purchase""
An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
beneficial ownership financial
"The reporting person disclaims beneficial ownership of these securities"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent of his pecuniary interest therein."
indirect ownership financial
"ownership_type: "indirect" and nature_of_ownership: "By Spouse""
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
Does the PRTA Form 4 disclose any indirect holdings for William P. Scully?
Yes. The filing lists 52,000 Prothena ordinary shares held indirectly by Scully’s spouse and 80,000 shares held by Manatee Equity Fund LLC. Scully disclaims beneficial ownership of these securities except to the extent of his pecuniary interest in the respective entities.
What does the weighted average price mean in William P. Scully’s PRTA trade?
The weighted average price of $7.8995 reflects multiple trades combined into one reported figure. According to the filing, individual purchases occurred at prices from $7.8600 to $7.9312 per share, and detailed breakdowns are available from Prothena or the SEC staff upon request.
AI-generated analysis. How Rhea-AI works. Not financial advice.
