Skip to main content
PRTA
NASDAQ Life Sciences

Prothena Authorizes Significant $100M Share Repurchase Program

Tom Rudovsky · Reported by Dow Jones Newswires
More coverage: Biotech Stocks · Healthcare
Sentiment info
Positive
Importance info
8
Price
$9.81
Mkt Cap
$466.706M
52W Low
$4.32
52W High
$16.16
52W Position info
127% above low
Off High info
39% below high
Rel. Volume info
0.6× avg
Market data snapshot near publication time

PRTA has more than doubled off its 52-week low of $4.32.

Summary

Prothena has announced a new share repurchase plan authorizing the company to buy back up to $100 million of its ordinary shares. This is a highly material capital allocation decision, as the authorized amount represents over 20% of the company's current market capitalization of approximately $467 million. The move signals strong management confidence in the company's valuation and future prospects, potentially providing significant support for the stock price by reducing the outstanding share count and boosting earnings per share. This follows recent Q4 and full-year 2025 financial results reported on February 19th. Traders will closely monitor the execution of this program and its impact on the company's financial structure and stock performance.

At the time of this announcement, PRTA was trading at $9.81 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $466.7M. The 52-week trading range was $4.32 to $16.16. This news item was assessed with positive market sentiment and an importance score of 8 out of 10. Source: Dow Jones Newswires.


Price Chart

Share this article

Copied!

PRTA - Latest Insights

PRTA
Jun 09, 2026, 8:00 AM EDT
Filing Type: 144
Importance Score:
7
Price at Filing: $8.71
Real-time Price: $8.56 info
Change: -$0.150 (-2%) info
Market Cap: $448.144M info
PRTA
May 07, 2026, 4:32 PM EDT
Source: Wiseek News
Importance Score:
9
Price at Filing: $10.53
Real-time Price: $8.56 info
Change: -$1.97 (-19%) info
Market Cap: $448.144M info
PRTA
May 07, 2026, 4:20 PM EDT
Filing Type: 10-Q
Importance Score:
9
Price at Filing: $10.53
Real-time Price: $8.56 info
Change: -$1.97 (-19%) info
Market Cap: $448.144M info
PRTA
May 07, 2026, 4:14 PM EDT
Filing Type: 8-K
Importance Score:
9
Price at Filing: $10.53
Real-time Price: $8.56 info
Change: -$1.97 (-19%) info
Market Cap: $448.144M info
PRTA
Apr 27, 2026, 4:07 PM EDT
Source: Reuters
Importance Score:
8
Price at Filing: $11.34
Real-time Price: $8.56 info
Change: -$2.78 (-25%) info
Market Cap: $448.144M info