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PROTHENA CORP PUBLIC LTD CO

PRTA Net buying

CIK 0001559053 #3165 in the set updated 22 Sep 2026

Bought (1 mo)

$1.10M

out of their own pocket, the only kind of buying there is

Sold (1 mo)

$0.00

$0.00 on a plan · $0.00 straight out of an exercise

Sold at will

$0.00

0 of 0 sales

Net

+$1.10M

+$1.10M against sales at will

By person

11 insiders · 2 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

SCULLY WILLIAM P

10% owner

$1.10M (2)

—

+$1.10M

1,146,000

2.23%

$9.67M

+7.9%

EcoR1 Capital, LLC entity

10% owner

—

5,304,596

10.33%

$44.74M

−54.2%

Malecek Michael J

Chief Legal Officer

—

80,000

0.1558%

$674.77K

—

Kinney Gene G.

President and CEO

—

68,793

0.1340%

$580.24K

—

Kingston Anne Evans

Chief Strategy Officer

—

55,782

0.1087%

$470.50K

−16.7%

Smith Brandon S.

Chief Operating Officer

—

52,000

0.1013%

$438.60K

—

Swanson Chad J.

Chief Development Officer

—

40,733

0.0793%

$343.57K

—

Nguyen Tran

Chief Strategy Officer and CFO

—

40,205

0.0783%

$339.11K

—

Isaacs Michael John

General Counsel & Company Sec.

—

35,745

0.0696%

$301.49K

−26.8%

Zago Wagner M.

Chief Scientific Officer

—

34,000

0.0662%

$286.78K

—

Walker Karin L

Chief Accounting Officer

—

10,000

0.0195%

$84.35K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

SCULLY WILLIAM P

18 Sep 2026

10% owner

Buy

100,000

$8.43

$843.46K

SCULLY WILLIAM P

2 Sep 2026

10% owner

Buy

27,000

$9.47

$255.74K

Show all 2 transactions →

What was left out

Form 4 filings counted 2

Amendments (4/A) skipped 0

Filings about a different issuer 0

Unreadable filings 0

Joint filings 0

Sales on a Rule 10b5-1 plan 0

Sales straight out of an exercise 0

Sales at will 0

Transactions with no price 0

Shares from compensation/vesting 0

History held since 2 Sep 2016