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SEC Form 4 research

PROTHENA CORP PUBLIC LTD CO insider transactions

Inspect PROTHENA CORP PUBLIC LTD CO's public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001559053
Reporting owners
38
Officers and directors
17
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

Scroll sideways to compare all columns. Select a heading to sort.

2026-10-092026-10-08SCULLY WILLIAM PP90,000$8.57Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-08 and its public availability date is 2026-10-09. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code P: a purchase. A purchase code is only one eligibility check. Confirm reporting-owner role, amendment lineage and coverage before treating it as a strategy input.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

SEC accession 0001045463-26-000020 ↗SEC accession 0001045463-26-000020 ↗SEC accession 0001045463-26-000019 ↗

Recent insider disclosures

Inspect all 12 displayed rows: Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

Scroll sideways to compare all columns. Select a heading to sort.

2026-10-092026-10-08SCULLY WILLIAM PP90,000$8.57Not reported
2026-10-092026-10-07SCULLY WILLIAM PP125,000$8.4Not reported
2026-10-062026-10-02SCULLY WILLIAM PP100,000$8.57Not reported
2026-09-302026-09-29SCULLY WILLIAM PP162,000$8.68Not reported
2026-09-292026-09-28SCULLY WILLIAM PP103,500$8.6Not reported
2026-09-212026-09-18SCULLY WILLIAM PP100,000$8.43Not reported
2026-09-042026-09-02SCULLY WILLIAM PP27,000$9.47Not reported
2026-08-222026-08-20SCULLY WILLIAM PP50,000$8.79Not reported
2026-08-112026-08-07SCULLY WILLIAM PP3,500$8.62Not reported
2026-08-112026-08-07SCULLY WILLIAM PP34,000$8.62Not reported
2026-07-312026-07-29Kingston Anne EvansS7,662$8.47Not reported
2026-07-312026-07-29Isaacs Michael JohnS8,386$8.47Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 19 displayed rows: Officers and directors in the directory

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Nguyen Tran000145701337
Garren Hideki000185412621
Ekman Lars000137611733
COLLIER RICHARD T000111075116
Cooke Shane000152482366
HENNEY CHRISTOPHER S000124288029
HOMAN ARTHUR W0001232119153
Isaacs Michael John00021278151
Karp Carol D.000169221422
Kingston Anne Evans00021278511
Kinney Gene G.000156438033
Koller Martin00015733514
Malecek Michael J000177933636
Nickerson Tara000156446114
Schenk Dale B.000156437110
Selkoe Dennis J.000158230633
Smith Brandon S.000180522613
Walker Karin L000155942265
Zago Wagner M.000170868116
Nguyen Tran ↗Garren Hideki ↗Ekman Lars ↗COLLIER RICHARD T ↗Cooke Shane ↗HENNEY CHRISTOPHER S ↗HOMAN ARTHUR W ↗Isaacs Michael John ↗Karp Carol D. ↗Kingston Anne Evans ↗Kinney Gene G. ↗Koller Martin ↗Malecek Michael J ↗Nickerson Tara ↗Schenk Dale B. ↗Selkoe Dennis J. ↗Smith Brandon S. ↗Walker Karin L ↗Zago Wagner M. ↗

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.