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Prothena Corp. Valuation Multiples

Discover revenue and EBITDA valuation multiples for Prothena Corp. and similar public comparables like Blau FarmacΓͺutica, Aquestive Therapeutics, Abclon, Contineum Therapeutics and more.

Prothena Corp. Overview

About Prothena Corp.

Prothena Corp PLC is a clinical biotechnology company that focuses on protein dysregulation and a pipeline of investigational therapeutics with the potential to change the course of devastating neurodegenerative and rare and peripheral amyloid diseases. The company's clinical pipeline of antibody-based product candidates targets a range of indications, including Amyloid Light-chain (AL) amyloidosis (NEOD001), Parkinson's disease and other related synucleinopathies (PRX002), and inflammatory diseases, including ATTR amyloidosis [Coramitug (PRX004)], Alzheimer’s disease (PRX123), Neurodegeneration (PRXPRX019), and Others.


Founded

2012

HQ

Ireland

Employees

163

Financials (LTM)

Revenue: $39M
Net Income: ($146M)

EV

$193M

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Prothena Corp. Financials

Prothena Corp. reported last 12-month revenue of $39M.

In the same LTM period, Prothena Corp. generated $39M in gross profit and had net loss of ($146M).

Revenue (LTM)


Prothena Corp. P&L

In the most recent fiscal year, Prothena Corp. reported revenue of $10M and EBITDA of ($184M).

Prothena Corp. is unprofitable as of last fiscal year, with EBITDA margin of (1897%) and net margin of (2521%).

See analyst estimates for Prothena Corp.
LTMLast FY202320242025202620272028
Revenue$39M$10M$91M$135M$10M
Gross Profit$39Mβ€”β€”β€”$10M
Gross Margin100%β€”β€”β€”100%
EBITDAβ€”($184M)($190M)($154M)($184M)
EBITDA Marginβ€”(1897%)(208%)(114%)(1897%)
EBIT Margin(322%)(1906%)(209%)(114%)(1906%)
Net Profit($146M)($244M)($147M)($122M)($244M)
Net Margin(375%)(2521%)(161%)(90%)(2521%)

Financial data powered by Morningstar, Inc.

Prothena Corp. Stock Performance

Prothena Corp. has current market cap of $514M, and enterprise value of $193M.

Market Cap Evolution


Prothena Corp.'s stock price is $9.82.

Prothena Corp. share price decreased by 11.2% in the last 30 days, and increased by 114.1% in the last year.

Prothena Corp. has an EPS (earnings per share) of $-4.66.

See more trading valuation data for Prothena Corp.
EVMarket CapPrice 1DPrice 1MPrice 3MPrice 12MEPS
$193M$514M0.0%-11.2%13.3%114.1%$-4.66

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Prothena Corp. Valuation Multiples

Prothena Corp. trades at 4.9x EV/Revenue multiple, and (1.0x) EV/EBITDA.

See NTM and 2027E valuation multiples for Prothena Corp.

EV / Revenue (LTM)


Prothena Corp. Financial Valuation Multiples

As of May 25, 2026, Prothena Corp. has market cap of $514M and EV of $193M.

Prothena Corp. has a P/E ratio of (3.5x).

LTMLast FY202320242025202620272028
EV/Revenue4.9x19.9x2.1x1.4x19.9x
EV/EBITDAβ€”(1.0x)(1.0x)(1.3x)(1.0x)
EV/EBIT(1.5x)(1.0x)(1.0x)(1.2x)(1.0x)
EV/Gross Profit4.9xβ€”β€”β€”19.9x
P/E(3.5x)(2.1x)(3.5x)(4.2x)(2.1x)
EV/FCFβ€”(1.2x)(1.4x)(1.3x)(1.2x)

Multiples above and below 250x are considered non-meaningful (n/m). Valuation data powered by FactSet, Inc. and Morningstar, Inc.

Verified Prothena Corp. Valuation Multiples

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Prothena Corp. Margins & Growth Rates

Prothena Corp. grew revenue by 760% but EBITDA decreased by 100% in the last fiscal year.

In the most recent fiscal year, Prothena Corp. reported EBITDA margin of (1897%) and net margin of (2521%).

See estimated margins and future growth rates for Prothena Corp.

Prothena Corp. Margins

Last FY202420252026202720282029
Gross Marginβ€”β€”100%100%
EBITDA Margin(1897%)(114%)(1897%)0%
EBIT Margin(1906%)(114%)(1906%)(1%)
Net Margin(2521%)(90%)(2521%)3%
FCF Margin(1691%)(111%)(1691%)β€”

Prothena Corp. Growth Rates

FY+1/FY23/2424/2525/2626/2727/2828/29
Revenue Growth760%48%(93%)760%
Gross Profit Growthβ€”β€”β€”760%
EBITDA Growth(100%)(19%)20%(100%)
EBIT Growth(99%)(19%)19%(99%)
Net Profit Growth(101%)(17%)100%(101%)
FCF Growthβ€”10%9%β€”

Data powered by FactSet, Inc. and Morningstar, Inc.

Prothena Corp. Operational KPIs

Prothena Corp.'s revenue per employee in the last FY averaged $0.1M, while opex per employee averaged $1.2M for the same period.

Prothena Corp.'s Rule of 40 is 760% (metric relevant for SaaS companies only, counted as combined revenue growth rate and EBITDA margin).

Prothena Corp.'s Rule of X is 1901% (created by Bessemer, Rule of X is another metric to measure SaaS companies, ~1.5x stronger vs. the traditional Rule of 40, counted as revenue growth rate multiplied by 2.5 plus EBITDA margin).

Access forward-looking KPIs for Prothena Corp.
LTMLast FY202320242025202620272028
Rule of 40β€”760%β€”β€”β€”
Bessemer Rule of Xβ€”1901%β€”β€”β€”
Revenue per Employeeβ€”$0.1Mβ€”β€”β€”
Opex per Employeeβ€”$1.2Mβ€”β€”β€”
G&A Expenses to Revenue141%613%68%50%613%
R&D Expenses to Revenue255%1393%241%165%1393%
Opex to Revenueβ€”2006%309%214%2006%

Data powered by FactSet, Inc. and Morningstar, Inc.

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Prothena Corp. Competitors

Prothena Corp. competitors include Blau FarmacΓͺutica, Aquestive Therapeutics, Abclon, Contineum Therapeutics, XOMA Royalty, Medigen Vaccine Biologics, Kyverna Therapeutics, Wellgistics Health, Synmosa Biopharma and Genfit.

Most Prothena Corp. public comparables operate across Biopharmaceuticals and BioTech.

EV/RevenueEV/EBITDA
Last FYLTM2027ELast FYLTM2027E
Blau FarmacΓͺutica1.5x1.5x4.9x5.9x
Aquestive Therapeutics10.1x9.6x(9.1x)(10.6x)
Abclon156.9xβ€”(45.3x)β€”
Contineum Therapeuticsβ€”102.6x(4.1x)(3.9x)
XOMA Royalty10.8x10.1x11.7x36.2x
Medigen Vaccine Biologics23.3x20.3x(117.4x)1213.7x
Kyverna Therapeuticsβ€”β€”(2.0x)(1.9x)
Wellgistics Health24.0xβ€”(6.0x)β€”

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About Prothena Corp.

When was Prothena Corp. founded?Prothena Corp. was founded in 2012.
Where is Prothena Corp. headquartered?Prothena Corp. is headquartered in Ireland.
How many employees does Prothena Corp. have?As of today, Prothena Corp. has over 163 employees.
Who is the CEO of Prothena Corp.?Prothena Corp.'s CEO is Gene G. Kinney.
Is Prothena Corp. publicly listed?Yes, Prothena Corp. is a public company listed on Nasdaq.
What is the stock symbol of Prothena Corp.?Prothena Corp. trades under PRTA ticker.
When did Prothena Corp. go public?Prothena Corp. went public in 2012.
Who are competitors of Prothena Corp.?Prothena Corp. main competitors include Blau FarmacΓͺutica, Aquestive Therapeutics, Abclon, Contineum Therapeutics, XOMA Royalty, Medigen Vaccine Biologics, Kyverna Therapeutics, Wellgistics Health, Synmosa Biopharma, Genfit.
What is the current market cap of Prothena Corp.?Prothena Corp.'s current market cap is $514M.
What is the current revenue of Prothena Corp.?Prothena Corp.'s last 12 months revenue is $39M.
What is the current revenue growth of Prothena Corp.?Prothena Corp. revenue growth (NTM/LTM) is 56%.
What is the current EV/Revenue multiple of Prothena Corp.?Current revenue multiple of Prothena Corp. is 4.9x.
Is Prothena Corp. profitable?No, Prothena Corp. is not profitable.
What is the current net income of Prothena Corp.?Prothena Corp.'s last 12 months net income is ($146M).
How many companies Prothena Corp. has acquired to date?Prothena Corp. hasn't acquired any companies yet (or none have been disclosed publicly).
In how many companies Prothena Corp. has invested to date?Prothena Corp. hasn't invested in any companies yet (or none have been disclosed publicly).

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