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Mersana Therapeutics logo — Our mission is to discover and develop life-changing antibod...

Mersana Therapeutics

Our mission is to discover and develop life-changing antibody-drug conjugates (ADCs) for patients fighting cancer.

Founded 2001 United States Cambridge, United States 159 employees Acquired Total: $534.80M Biotechnology, Health Care +1

General Information

Company Name Mersana Therapeutics
Founded Year 2001
Location United States Cambridge, United States
Founders / Decision Makers
Team member Team member
Employees 159
Industries Biotechnology, Health Care, Health and Wellness
Funding Stage Acquired
Business Model B2B
Revenue Model Product Sales, Licensing
Social

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About Mersana Therapeutics

Mersana Therapeutics, founded in 2001, is a visionary player in the Biotechnology and Health Care sectors, headquartered in the United States. With its mission, "Our mission is to discover and develop life-changing antibody-drug conjugates (ADCs) for patients fighting cancer," the company stands at the forefront of developing innovative treatments for cancer patients.

This clinical-stage biopharmaceutical enterprise is pioneering the development of novel antibody-drug conjugates (ADCs) through its proprietary Dolasynthen and Immunosynthen ADC platforms. These platforms are integral to its pipeline of wholly-owned and partnered product candidates aiming to address various cancer types. Notable projects include XMT-1660, targeting B7-H4, and XMT-2056, a novel HER2-targeting ADC.

Significant validation of Mersana's potential came with a $129.00M acquisition investment by Day One Biopharmaceuticals on 01 November 2025, marking a strategic move that underscores investor confidence in its robust pipeline and proprietary technologies.

Business keywords: Antibody-Drug Conjugates (ADCs), Cancer Research, Oncology Drug Development, Bioconjugation, Cytotoxic Therapeutics, Immunostimulatory Therapeutics, Biodegradable Polymer Platform, B7-H4 Targeting, HER2 Targeting, Clinical-Stage Biopharmaceuticals

Services & Products

Drug Development
Clinical Trials
Patient Resource Support

Target Customers

Patients with cancer Healthcare providers Pharmaceutical partners Researchers

Funding Rounds & Investors (13)

View All
Funding Stage Amount Investors Lead Investors Date
Acquisition $129.00M 1
Day One Biopharmaceuticals
01 Nov 2025
Post-IPO Debt $100.00M -
01 Jan 2021
Post-IPO Equity $65.00M -
01 Apr 2020
Post-IPO Equity $97.80M -
01 Feb 2019
Post-IPO Equity Undisclosed -
01 Jul 2018
IPO Undisclosed -
01 Jun 2017
Round $33.00M 6
Wellington Management, ArrowMark Partners +4
01 Jun 2016
Series B $35.00M 4
F-Prime Capital, NEA +2
01 Mar 2015
Secondary Market $14.50M 2
F-Prime Capital, NEA
01 Apr 2014
Series A $27.00M 4
F-Prime Capital, ProQuest Investments +2
01 Sep 2012

View All 13 Funding Rounds

Mersana Therapeutics Alternatives & Competitors

View All Alternatives
Mersana Therapeutics vs
Arcus Biosciences
Arcus Biosciences United States

Biopharmaceutical company developing differentiated molecules and combination therapies for cancer a...

IPO
633 employees
Biopharma, Biotechnology
Mersana Therapeutics vs
Iksuda Therapeutics
Iksuda Therapeutics United Kingdom

Creating class-leading ADCs with enhanced tumor specificity

Series A
43 employees
Biopharma, Biotechnology
Mersana Therapeutics vs
Mestag Therapeutics
Mestag Therapeutics United Kingdom

New therapies for inflammatory disease and cancer by targeting fibroblast immunology

Seed
40 employees
Biotechnology, Health Care

FAQ About Mersana Therapeutics

Our mission is to discover and develop life-changing antibody-drug conjugates (ADCs) for patients fighting cancer.
Mersana Therapeutics was founded in 2001.
Mersana Therapeutics is headquartered in Cambridge, United States.
Mersana Therapeutics operates in Biotechnology, Health Care and Health and Wellness. Its work centres on Antibody-Drug Conjugates (ADCs), Cancer Research, Oncology Drug Development and Bioconjugation. Its customers include Patients with cancer, Healthcare providers and Pharmaceutical partners.
Mersana Therapeutics has a B2B business model. Its revenue comes from Product Sales and Licensing.
Mersana Therapeutics has approximately 159 employees.
Mersana Therapeutics has completed 13 funding rounds, raising a total of $534.80M. The latest funding stage is Acquired.
Mersana Therapeutics offers: Drug Development, Clinical Trials, Patient Resource Support.
Top alternatives and competitors to Mersana Therapeutics include Arcus Biosciences, Iksuda Therapeutics, Mestag Therapeutics, Prelude Therapeutics, NBE-Therapeutics AG. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Mersana Therapeutics and Arcus Biosciences are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Mersana Therapeutics, https://bouncewatch.com/company/mersana-therapeutics, updated 9 June 2026. When citing, please name BounceWatch and link this page.

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