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$8.36-0.18|(-2.11%)
52W H: 11.852W L: 7.73Beta: -0.23

About Prothena Corporation PLC

Frequently Asked Questions

What is the 52-week range for PRTA?

The 52-week high is $11.8 and the 52-week low is $7.73.

What is the P/E ratio for PRTA?

The P/E ratio data is currently unavailable.

What is the dividend yield for PRTA?

This company does not currently pay a dividend or the data is unavailable.

What is the Return on Equity (ROE)?

The trailing twelve months (TTM) Return on Equity is -14.98%.

What is the Net Profit Margin?

The Net Profit Margin (TTM) is -80.67%.

What is the Price to Book (P/B) Ratio?

The annual Price to Book ratio stands at 1.83.

Analyst Recommendation Trends

Wall Street analyst consensus for PRTA over the last few months:

2026-09-01
Buy: 6
S.Buy: 2
Hold: 3
Sell: 1
2026-08-01
Buy: 6
S.Buy: 2
Hold: 3
Sell: 1
2026-07-01
Buy: 6
S.Buy: 2
Hold: 3
Sell: 1
2026-06-01
Buy: 6
S.Buy: 2
Hold: 3
Sell: 1

Latest PRTA News

4 Alzheimer's Drug Stocks to Watch on World Alzheimer's Day

Four biotech stocks advance Alzheimer's therapies, from marketed treatments to experimental programs targeting amyloid and tau.

Yahoo9/21/2026

Prothena to Participate in the H.C. Wainwright 28th Annual Global Investment Conference

DUBLIN, Ireland, September 09, 2026--Prothena to Participate in the H.C. Wainwright 28th Annual Global Investment Conference

Yahoo9/9/2026

Related Stocks (Peers)

Companies operating in similar sectors to PRTA:

ALKSPRTAAMRN

Recent Insider Transactions

DateNameShares ChangedPriceValue
2026-09-28SCULLY WILLIAM P+103,500$8.5978$889,872
2026-09-18SCULLY WILLIAM P+100,000$8.4346$843,460
2026-09-02SCULLY WILLIAM P+27,000$9.4718$255,739
2026-08-20SCULLY WILLIAM P+50,000$8.7886$439,430
2026-08-18SCULLY WILLIAM P-627,553--
2026-08-17SCULLY WILLIAM P+336,000--
2026-08-10SCULLY WILLIAM P+251,553--
2026-08-07SCULLY WILLIAM P+3,500$8.6192$30,167
2026-08-07SCULLY WILLIAM P+34,000$8.6192$293,053
2026-07-29Kingston Anne Evans-7,662$8.4729$64,919
2026-07-29Isaacs Michael John-8,386$8.4731$71,055
2026-07-28Zago Wagner M.-51,000--
2026-07-28Zago Wagner M.-51,000$8.56$436,560
2026-07-28Zago Wagner M.+51,000--
2026-07-28Walker Karin L-15,000--
2026-07-28Walker Karin L-15,000$8.56$128,400
2026-07-28Walker Karin L+15,000--
2026-07-28Swanson Chad J.-51,000--
2026-07-28Swanson Chad J.-3,467$8.56$29,678
2026-07-28Swanson Chad J.-40,800$8.56$349,248
2026-07-28Swanson Chad J.+51,000--
2026-07-28Smith Brandon S.-78,000--
2026-07-28Smith Brandon S.-78,000$8.56$667,680
2026-07-28Smith Brandon S.+78,000--
2026-07-28Kinney Gene G.-84,000--
2026-07-28Kinney Gene G.-84,000$8.56$719,040
2026-07-28Kinney Gene G.+84,000--
2026-07-28Kingston Anne Evans-3,498$8.56$29,943
2026-07-28Isaacs Michael John-4,694$8.56$40,181
2026-07-28Nguyen Tran-57,000--
2026-07-28Nguyen Tran-57,000$8.56$487,920
2026-07-28Nguyen Tran+57,000--
2026-06-16SCULLY WILLIAM P+20,000$7.8995$157,990
2026-06-15SCULLY WILLIAM P-325,000--
2026-06-11SCULLY WILLIAM P+125,000$8.1698$1,021,225
2026-06-04SCULLY WILLIAM P+50,000$9.3059$465,295
2026-06-02SCULLY WILLIAM P+50,000$9.426$471,300
2026-05-22SCULLY WILLIAM P+100,000$9.813$981,300
2026-05-15Selkoe Dennis J.+27,000--
2026-05-15Dunn William H. Jr.+27,000--
2026-05-15Cooke Shane+27,000--
2026-05-15Ekman Lars+27,000--
2026-05-15WELCH DANIEL G+27,000--
2026-05-15COLLIER RICHARD T+27,000--
2026-04-10Kingston Anne Evans+100,000--
2026-03-03Zago Wagner M.+190,000--
2026-03-03Walker Karin L+150,000--
2026-03-03Swanson Chad J.+190,000--
2026-03-03Smith Brandon S.+190,000--
2026-03-03Malecek Michael J+190,000--
2026-03-03Kinney Gene G.+520,000--
2026-03-03Nguyen Tran+230,000--