Custom Polymer Science Services for Complex Therapeutics

For more than 30 years, Gannet BioChem has helped innovators turn complex therapeutic ideas into real-world impact. As a specialized CDMO rooted in polymer science, we combine deep expertise in activated polymers, PEG chemistry, and bioconjugation with end-to-end capabilities needed to accelerate development, from early discovery through cGMP and commercial manufacturing.

Built on a scientific legacy that spans Shearwater and Nektar Therapeutics, we bring together chemistry excellence, responsive collaboration, and the confidence of a partner who stays close to your molecule at every stage.

Where Deep Science Meets
True Partnership

At Gannet BioChem, we believe progress happens when expertise and collaboration come together. Watch the video to hear from our team about the legacy, capabilities, and values that shape every partnership. 

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Expertise and Capabilities That Unlock What’s Possible

Whether you’re advancing an early therapeutic concept, preparing for clinical phases, or scaling toward commercialization, our team meets you where you are and guides your program with tailored chemistry and polymer science expertise.

Activated Polymers

Activated Polymers
Our activated polymer services support the development, scale-up, and manufacturing of complex materials with diverse architectures, molecular weights, and functional groups. By combining deep polymer expertise with integrated analytical services, we help partners translate early concepts into scalable, manufacturing-ready solutions.
Explore Our Expertise

PEG & Bioconjugation

PEG & Bioconjugation
With more than three decades of experience in PEG chemistry and bioconjugate development, we help partners design PEG solutions that improve stability, pharmacokinetics, and manufacturability. Our team supports everything from PEG structure selection and linker chemistry to bioconjugation strategies for proteins, peptides, small molecules, and more.
Discover Our Experience

Project Management

Project Management
Our project management approach brings clarity and confidence to complex polymer programs. Working closely with scientific, analytical, and manufacturing teams, we translate technical complexity into realistic plans that support efficient development, informed decision-making, and dependable execution from early development through cGMP and commercial manufacturing.
Dive Deeper Into Our Approach

Analytical Method Development & Validation

Analytical Method Development & Validation
We provide the clarity needed to guide integrated programs forward. With deep experience across polymers, PEGs, and conjugated systems, our teams design phase-appropriate methods that support critical quality attributes, process decisions, and regulatory readiness.
Uncover Analytical Excellence

cGMP Manufacturing

cGMP Manufacturing
Gannet BioChem offers integrated cGMP manufacturing services that support programs from early development through commercial supply. Our FDA-inspected facility and experienced teams provide the continuity, quality, and reliability needed to scale complex polymer chemistries with confidence.
See Our Capabilities

Proven. Trusted. Built for the Therapeutics of Tomorrow.

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30+ years advancing polymer-enabled drug delivery

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50+ global partners supported across preclinical 
and clinical programs

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FDA-inspected, purpose-built facility supporting projects from milligram to commercial scale

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Tenured scientific team with hands-on involvement from concept to batch

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Track record supporting FDA-approved therapies 
and late-stage development programs

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Flexible, scalable manufacturing designed for complex chemistries

Explore the Latest From Gannet BioChem

Blog

Gannet BioChem Acquires Laysan Bio to Expand Activated Polymer and Bioconjugation Capabilities

January 2026
Blog

Gannet BioChem to Participate in Biotech Showcase 2025

December 2025
Event

DCAT Week

March 23-25, 2026New York City, NY

Move Your
Molecule Forward

Partner with the team that unites deep polymer science expertise with a collaborative, responsive approach.