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PRTA
NASDAQ Life Sciences

Previous Officer Files Intent to Sell $740K in Stock

Analysis by Wiseek AI
Sentiment info
Negative
Importance info
7
Price
$8.71
Mkt Cap
$448.144M
52W Low
$4.95
52W High
$11.8
Market data snapshot near publication time

Summary

A previous officer of Prothena has filed a Form 144 to sell 80,000 shares worth $740,000, signaling a significant disposition by a former executive.


Key Events

  • Intent to Sell Shares

    Michael J. Malecek, a previous officer, filed a Form 144 to sell 80,000 shares of common stock.

  • Significant Value

    The proposed sale has an approximate market value of $740,000.

  • Source of Shares

    The shares were acquired on July 28, 2025, through an employee restricted share unit award.


Analysis

A former officer, Michael J. Malecek, has filed a Form 144 indicating intent to sell 80,000 shares of common stock, valued at approximately $740,000. This sale represents a notable disposition by a former executive, potentially adding to market supply. The shares were acquired through an employee restricted share unit award.

At the time of this filing, PRTA was trading at $8.71 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $448.1M. The 52-week trading range was $4.95 to $11.80. This filing was assessed with negative market sentiment and an importance score of 7 out of 10.

View Main SEC Filing

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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: $7.93 info
Change: -$0.780 (-9%) info
Market Cap: $414.114M info
PRTA
May 07, 2026, 4:32 PM EDT
Source: Wiseek News
Importance Score:
9
Price at Filing: $10.53
Real-time Price: $7.93 info
Change: -$2.60 (-25%) info
Market Cap: $414.114M info
PRTA
May 07, 2026, 4:20 PM EDT
Filing Type: 10-Q
Importance Score:
9
Price at Filing: $10.53
Real-time Price: $7.93 info
Change: -$2.60 (-25%) info
Market Cap: $414.114M info
PRTA
May 07, 2026, 4:14 PM EDT
Filing Type: 8-K
Importance Score:
9
Price at Filing: $10.53
Real-time Price: $7.93 info
Change: -$2.60 (-25%) info
Market Cap: $414.114M info
PRTA
Apr 27, 2026, 4:07 PM EDT
Source: Reuters
Importance Score:
8
Price at Filing: $11.34
Real-time Price: $7.93 info
Change: -$3.41 (-30%) info
Market Cap: $414.114M info
PRTA
Mar 27, 2026, 4:03 PM EDT
Filing Type: DEF 14A
Importance Score:
7
Price at Filing: $9.26
Real-time Price: $7.93 info
Change: -$1.33 (-14%) info
Market Cap: $414.114M info
PRTA
Feb 27, 2026, 4:45 PM EST
Filing Type: 8-K
Importance Score:
8
Price at Filing: $9.01
Real-time Price: $7.93 info
Change: -$1.08 (-12%) info
Market Cap: $414.114M info
PRTA
Feb 27, 2026, 4:15 PM EST
Source: Dow Jones Newswires
Importance Score:
8
Price at Filing: $9.81
Real-time Price: $7.93 info
Change: -$1.88 (-19%) info
Market Cap: $414.114M info
PRTA
Feb 27, 2026, 4:04 PM EST
Filing Type: 10-K
Importance Score:
7
Price at Filing: $9.15
Real-time Price: $7.93 info
Change: -$1.22 (-13%) info
Market Cap: $414.114M info
PRTA
Feb 19, 2026, 4:07 PM EST
Filing Type: 8-K
Importance Score:
7
Price at Filing: $9.03
Real-time Price: $7.93 info
Change: -$1.10 (-12%) info
Market Cap: $414.114M info