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Traded Oct 23, 2026 · Filed Oct 26, 2026
A major shareholder of Prothena Corp Public paid $404K out of pocket for Prothena Corp Public shares.
Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell.
Written by software from the filings listed below · Oct 26, 2026
4 more points, with the facts they come from, are in OQRO Pro.
Sign up freeopen market purchase
Code P — open-market or private purchase
~$403,525
Shares × reported transaction price
$100K–$500K
+4.4%
Purchase shares ÷ estimated pre-transaction holdings, from the filing
First purchase in 0 months
Confirmed open-market purchases by the same insider in the available history
No
Compared with 14 earlier confirmed purchases
No other insider purchases within 30 days
Distinct insiders at the same issuer with confirmed open-market purchases
78 days after results of Aug 6, 2026, 13 days before results of Nov 5, 2026
Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results
Closed at $8.20 on Oct 23, 2026, within 4% of its 52-week low, after an 8% drop over the previous 30 trading days
52-week range $7.91 (Jun 10, 2026) to $11.51 (Apr 28, 2026), 8% of the way up, from 250 adjusted closes. 30 trading days earlier: $8.93 on Sep 11, 2026. Describes the past only, not a forecast
None found in footnotes
Only flagged when a footnote says so; never inferred
Traded 13 days before PRTA reported its results (Nov 5, 2026)
Compared with every open-market purchase and sale of this company in SEC filings since 2006. A fact about the record, not a signal to trade
| After | Stock | S&P 500 | Difference |
|---|---|---|---|
| 7 days | −6.8% | −2.0% | −4.8% |
Past results only. Not a forecast.
Insider filing
Traded Nov 6 · filed 4 days later
Gift or transfer — classified separately from trades.
Insider buying
Traded Nov 9 · filed 1 day later
A major shareholder of Prothena Corp Public paid $1.19M out of pocket for Prothena Corp Public shares. Shares held went up 17% with this purchase.
Insider filing
Traded Oct 27 · filed 2 days later
Gift or transfer — classified separately from trades.
Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.
