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MRSN Overview

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$
0.000
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0.000(0.000%)Aft-market
ET
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0.000
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ET
OverviewStock Price PredictionTechnicalValuationFinancialsEarningsShould I BuyNews & Events
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Intellectia

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High
--
Open
--
VWAP
--
Vol
--
Mkt Cap
244.11M
Low
--
Amount
--
EV/EBITDA(TTM)
--
Total Shares
--
EV
88.97M
EV/OCF(TTM)
--
P/S(TTM)
4.36
Mersana Therapeutics, Inc. is a commercial-stage biopharmaceutical company focused on the development of antibody-drug conjugates (ADCs) and is engaged in developing and commercializing targeted therapies for people of all ages with life-threatening diseases. The Company also focuses on adult oncology. Its pipeline includes tovorafenib (OJEMDA), DAY301, emiltatug ledadotin (Emi-Le), a novel antibody drug conjugate (ADC) targeting the B7-H4 protein in clinical development to treat the rare cancer adenoid cystic carcinoma (ACC). It has developed two proprietary and differentiated ADC platforms: Dolasynthen and Immunosynthen. Dolasynthen is a cytotoxic ADC platform that is designed to generate site-specific, homogeneous ADCs. Immunosynthen is its proprietary stimulator of interferon genes (STING)-agonist platform that is designed to generate systemically administered ADCs that locally activate STING signaling in both antigen-expressing tumor cells and in tumor-resident immune cells.
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Events Timeline

(ET)
2026-01-06
09:20:00
Day One Biopharmaceuticals Completes Acquisition of Mersana Therapeutics
select
2025-11-14 (ET)
2025-11-14
07:02:03
Mersana Therapeutics Announces Q3 Earnings Per Share of ($1.51), Below Consensus Estimate of 89 Cents
select
2025-11-13 (ET)
2025-11-13
10:08:45
Oppenheimer finds Day One's $285M investment in Mersana 'intriguing'
select

News

Yahoo Finance
9.5
02-24Yahoo Finance
Day One Biopharmaceuticals Reports Strong 2025 Financial Results and Growth Outlook
  • Revenue Growth: In 2025, Day One's OJEMDA net product revenue reached $155.4 million, reflecting a 172% year-over-year increase, indicating strong market demand and widespread adoption by prescribers, with guidance for 2026 projected between $225 million and $250 million.
  • Clinical Trial Progress: Three-year data from the FIREFLY-1 trial was presented at the 2025 Society for Neuro-Oncology Annual Meeting, confirming the long-term safety and efficacy of OJEMDA in patients with relapsed or refractory pLGG, thereby enhancing the company's market position in rare cancers.
  • R&D Expense Management: Research and development expenses totaled $148.1 million in 2025, significantly down from 2024, demonstrating the company's ability to control costs while still advancing product development and improving overall financial health.
  • Strong Cash Position: As of December 31, 2025, Day One reported cash and short-term investments totaling $441.1 million, ensuring sufficient funding for future R&D and market expansion initiatives.
Globenewswire
8.5
01-06Globenewswire
Day One Acquires Mersana for $25 per Share, Expanding Oncology Pipeline
  • Acquisition Completed: Day One successfully acquired Mersana, paying $25 per share in cash along with a non-tradable contingent value right per share, with potential milestone payments totaling up to $30.25 per CVR, thereby enhancing its strategic positioning in adult oncology.
  • Pipeline Expansion: This acquisition adds the innovative antibody-drug conjugate Emi-Le targeting B7-H4 to Day One's clinical pipeline, aimed at treating the rare adenoid cystic carcinoma, addressing a significant unmet medical need in this area.
  • Market Response: As of the tender offer expiration, a total of 3,029,135 shares of Mersana were validly tendered, representing 60.57% of outstanding shares, ensuring the smooth completion of the acquisition and further solidifying Day One's market position.
  • Strategic Fit: Day One's CEO stated that this acquisition aligns closely with the company's mission, aiming to accelerate the development of new therapies by integrating resources, thereby enhancing its impact on patient communities and achieving sustainable business growth.
PRnewswire
7.0
2025-12-24PRnewswire
Halper Sadeh Investigates Udemy and Others for Potential Violations
  • Investigation Launched: Halper Sadeh LLC is investigating Udemy, Inc. (NASDAQ:UDMY) for potential violations related to its sale to Coursera, Inc., which involves exchanging each Udemy share for 0.800 shares of Coursera, potentially impacting shareholder rights.
  • Cash Transaction Review: Alexander & Baldwin, Inc. (NYSE:ALEX) is being sold to MW Group and funds affiliated with Blackstone Real Estate for $21.20 per share in cash, with Halper Sadeh possibly seeking to increase the consideration for shareholders.
  • Shareholder Rights Protection: The sale of United Security Bancshares (NASDAQ:UBFO) to Community West Bancshares involves an exchange of 0.4520 shares of Community West stock for each United Security share, prompting Halper Sadeh to offer legal advice to protect shareholder interests.
  • Legal Support Offered: The transaction between Mersana Therapeutics, Inc. (NASDAQ:MRSN) and Day One Biopharmaceuticals, Inc. has raised concerns, with Halper Sadeh providing legal services without upfront fees to help shareholders understand their rights.
Globenewswire
8.5
2025-12-23Globenewswire
Alexander & Baldwin Acquired for $21.20 per Share, Valuing Deal at $2.3 Billion
  • Acquisition Overview: Alexander & Baldwin will be acquired by MW Group and investors affiliated with Blackstone Real Estate and DivcoWest for $21.20 per share in an all-cash transaction, valuing the deal at approximately $2.3 billion, including outstanding debt, indicating strong market interest in the company.
  • Board Investigation: The ongoing investigation focuses on whether the A&B Board breached its fiduciary duties by failing to conduct a fair process, which could impact shareholder trust and satisfaction regarding the transaction.
  • Market Reaction: The transaction price being below market expectations may lead to short-term volatility in A&B's stock price, affecting investor confidence and raising questions about corporate governance.
  • Strategic Implications: This acquisition could reshape A&B's market positioning, and if successfully completed, may provide new growth opportunities for the company, while also necessitating attention to the protection of shareholder rights.
PRnewswire
7.0
2025-12-17PRnewswire
Halper Sadeh Investigates Mersana's Sale to Day One for Shareholder Rights Violations
  • Legal Investigation Initiated: Halper Sadeh LLC is investigating Mersana Therapeutics, Inc.'s sale to Day One Biopharmaceuticals, Inc. for potential violations of federal securities laws and breaches of fiduciary duties, aiming to protect shareholder rights and ensure the legality of the transaction.
  • Cidara Transaction Analysis: Cidara Therapeutics, Inc. is being sold to Merck for $221.50 per share in cash, raising concerns about shareholder rights, with Halper Sadeh LLC potentially seeking increased compensation and additional disclosures to ensure transparency in the deal.
  • Merger Impact Assessment: Ryerson Holding Corporation's merger with Olympic Steel, Inc. will result in Ryerson shareholders owning approximately 63% of the combined entity, prompting Halper Sadeh LLC to evaluate the potential impacts of this transaction on shareholder rights to safeguard their interests.
  • Shareholder Rights Protection: Halper Sadeh LLC offers no upfront legal fees for consultations, encouraging shareholders to reach out to discuss their legal rights and options, ensuring they receive appropriate compensation and disclosures in the transaction.
PRnewswire
8.5
2025-12-16PRnewswire
Mersana's $285M Deal with Day One Under Investigation for Fiduciary Breaches
  • Transaction Overview: Mersana's deal with Day One Biopharmaceuticals offers shareholders $25.00 per share in cash and potential contingent value rights of up to $30.25 per share, resulting in an approximate equity value of $129 million at closing, with a total deal value of up to $285 million if all milestone payments are achieved.
  • Insider Benefits: Mersana insiders are set to receive substantial benefits as part of change of control arrangements, raising concerns about whether the board is fulfilling its fiduciary duties to all shareholders.
  • Competition Restrictions: The transaction agreement imposes unreasonable limitations on competing transactions for Mersana, with significant penalties for accepting competing bids, potentially harming shareholder interests.
  • Legal Investigation: The Ademi Firm is investigating the conduct of Mersana's board to determine if they are adhering to their fiduciary responsibilities to all shareholders, particularly in the context of shareholder rights during mergers and acquisitions.
Wall Street analysts forecast MRSN stock price to rise
4 Analyst Rating
Wall Street analysts forecast MRSN stock price to rise
0 Buy
4 Hold
0 Sell
Hold
Current: 0.000
sliders
Low
30.75
Averages
30.75
High
30.75
Current: 0.000
sliders
Low
30.75
Averages
30.75
High
30.75
Wedbush
Outperform
to
Neutral
downgrade
$55.25
AI Analysis
2025-11-13
Reason
Wedbush
Price Target
$55.25
AI Analysis
2025-11-13
downgrade
Outperform
to
Neutral
Reason
Wedbush downgraded Mersana Therapeutics (MRSN) to Neutral from Outperform after Day One Biopharmaceuticals (DAWN) agreed to acquire Mersana for total consideration of up to $55.25 per share in cash.
BTIG
Buy -> Neutral
downgrade
$25
2025-11-13
Reason
BTIG
Price Target
$25
2025-11-13
downgrade
Buy -> Neutral
Reason
BTIG downgraded Mersana Therapeutics (MRSN) to Neutral from Buy following news this morning of Mersana's acquisition by Day One Biopharmaceuticals (DAWN) for $25 per share in cash at closing plus one non-tradable CVR per share to receive certain potential milestone payments of up to an aggregate of $30.25 per CVR in cash.
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Valuation Metrics

The current forward P/E ratio for Mersana Therapeutics Inc (MRSN.O) is -2.13, compared to its 5-year average forward P/E of -3.03. For a more detailed relative valuation and DCF analysis to assess Mersana Therapeutics Inc's fair value, Click here.

Forward PE

The forward P/E ratio is a valuation metric that divides a company's current stock price by its estimated future earnings per share over the next 12 months.
StronglyUndervaluedUndervaluedFairOvervaluedStronglyOvervalueddotted line Image
N/A
5Y Average PE
-3.03
Current PE
-2.13
Overvalued PE
-1.06
Undervalued PE
-4.99

Forward EV/EBITDA

The forward EV/EBITDA ratio is a valuation metric that divides a company's enterprise value (EV) by its estimated future earnings before interest, taxes, depreciation, and amortization (EBITDA) over the next 12 months.
StronglyUndervaluedUndervaluedFairOvervaluedStronglyOvervalueddotted line Image
N/A
5Y Average EV/EBITDA
-1.59
Current EV/EBITDA
0.00
Overvalued EV/EBITDA
0.21
Undervalued EV/EBITDA
-3.38

Forward PS

The forward P/S ratio is a valuation metric that divides a company's current stock price by its estimated future sales (or revenue) per share over the next 12 months.
StronglyUndervaluedUndervaluedFairOvervaluedStronglyOvervalueddotted line Image
N/A
5Y Average PS
544.58
Current PS
9.65
Overvalued PS
4254.05
Undervalued PS
-3164.89

Financials

AI Analysis
Annual
Quarterly

Whales Holding MRSN

B
Bain Capital Life Sciences Investors, LLC
Holding
MRSN
-5.79%
3M Return

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Frequently Asked Questions

What is Mersana Therapeutics Inc (MRSN) stock price today?

The current price of MRSN is 0 USD — it has increased 0

What is Mersana Therapeutics Inc (MRSN)'s business?

Mersana Therapeutics, Inc. is a commercial-stage biopharmaceutical company focused on the development of antibody-drug conjugates (ADCs) and is engaged in developing and commercializing targeted therapies for people of all ages with life-threatening diseases. The Company also focuses on adult oncology. Its pipeline includes tovorafenib (OJEMDA), DAY301, emiltatug ledadotin (Emi-Le), a novel antibody drug conjugate (ADC) targeting the B7-H4 protein in clinical development to treat the rare cancer adenoid cystic carcinoma (ACC). It has developed two proprietary and differentiated ADC platforms: Dolasynthen and Immunosynthen. Dolasynthen is a cytotoxic ADC platform that is designed to generate site-specific, homogeneous ADCs. Immunosynthen is its proprietary stimulator of interferon genes (STING)-agonist platform that is designed to generate systemically administered ADCs that locally activate STING signaling in both antigen-expressing tumor cells and in tumor-resident immune cells.

What is the price predicton of MRSN Stock?

Wall Street analysts forecast MRSN stock price to rise over the next 12 months. According to Wall Street analysts, the average 1-year price target for MRSN is30.75 USD with a low forecast of 30.75 USD and a high forecast of 30.75 USD. However, analyst price targets are subjective and often lag stock prices, so investors should focus on the objective reasons behind analyst rating changes, which better reflect the company's fundamentals.

What is Mersana Therapeutics Inc (MRSN)'s revenue for the last quarter?

Mersana Therapeutics Inc revenue for the last quarter amounts to 11.01M USD, decreased -12.61

What is Mersana Therapeutics Inc (MRSN)'s earnings per share (EPS) for the last quarter?

Mersana Therapeutics Inc. EPS for the last quarter amounts to -1.51 USD, decreased -35.47

How many employees does Mersana Therapeutics Inc (MRSN). have?

Mersana Therapeutics Inc (MRSN) has 102 emplpoyees as of March 12 2026.

What is Mersana Therapeutics Inc (MRSN) market cap?

Today MRSN has the market capitalization of 244.11M USD.