PRTA

$8.81+4.88%download financials (.py)

PROTHENA CORP PUBLIC LTD CO

Market Cap

$461M

Live price × shares (2026-10-17)

Sector

Health Care

Industry

Biotechnology

Beta (raw)

-0.31

60mo monthly vs SPY

P/E (TTM)

N/M

TTM to Jun 2026 · negative earnings

P/S (TTM)

8.5

Price / TTM revenue

P/B

1.6

Price / stockholders equity

EV/EBITDA

—

TTM

Price Chart

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Signals

purchases / sales, 90d

Short Volume

51%

W/W -10.2pp

Market & Alt Data

News

Factor Profile

Pro

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Velocity Score

19.96x

Avg Daily Buying (90d)

11,722 sh/day

Baseline Daily Buying

1,408 sh/day

Unique Buyers (90d)

Sort by

Type

Trade Date	Filed	Owner	Role	Type	Shares	Price	Value	Owned After
2026-10-23	2026-10-26	SCULLY WILLIAM P	10% Owner	Purchase	50.0K	$8.07	$404K	1.19M	View
2026-10-22	2026-10-26	SCULLY WILLIAM P	10% Owner	Purchase	100.0K	$8.19	$819K	1.14M	View
2026-10-14	2026-10-15	SCULLY WILLIAM P	10% Owner	Purchase	10.0K	$8.46	$85K	1.04M	View
2026-10-13	2026-10-15	SCULLY WILLIAM P	10% Owner	Purchase	100.0K	$8.35	$835K	1.03M	View
2026-10-08	2026-10-09	SCULLY WILLIAM P	10% Owner	Purchase	90.0K	$8.57	$771K	529.0K	View

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PRTA

Signals

Factor Profile

Recent News

PROTHENA CORP PUBLIC LTD CO (PRTA)

Reporting Insiders

Factor Profile

Date	Insider	Type	Shares	Value
2026-10-23	SCULLY WILLIAM P	P	50,000	$403,525
2026-10-22	SCULLY WILLIAM P	P	100,000	$818,520
2026-10-14	SCULLY WILLIAM P	P	10,000	$84,569
2026-10-13	SCULLY WILLIAM P	P	100,000	$835,480
2026-10-08	SCULLY WILLIAM P	P	90,000	$770,904