Ampersand

Ampersand

Modular therapeutics localized to diseased tissues

Overview

Ampersand Biomedicines develops modular therapeutics designed to act only in specific target tissues to improve efficacy and safety in disease treatment. Its products pair a localizing element that directs therapy to diseased tissues with an actuator that restores healthy biology, enabling precision medicine that reduces on-target, off-tissue toxicity. The company earns revenue through partnerships, licensing agreements, and potential direct sales of its therapeutics, working with pharmaceutical companies and healthcare providers. A key differentiator is its programmable, tissue-focused approach that combines disease-specific targeting with controllable therapeutic action, aiming to minimize side effects. The company’s goal is to advance its modular, tissue-localized platform and expand its therapeutic offerings through partnerships and funding, such as the $50 million investment from Flagship Pioneering.

About Ampersand

Simplify's Rating
Why Ampersand is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Biotechnology

Healthcare

Company Size

51-200

Company Stage

Series B

Total Funding

$115M

Headquarters

Boston, Massachusetts

Founded

2020

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Simplify's Take

What believers are saying

  • Secured $65M Series B from Flagship Pioneering and Eli Lilly in November 2024.
  • Partnered with Pfizer on obesity programs using AND Platform in November 2024.
  • Acquired AbCheck on January 3, 2024, accelerating antibody discovery capabilities.

What critics are saying

  • Pfizer terminates obesity collaboration after Lilly's retatrutide Phase 3 data in 2025.
  • AbCheck integration fails from Affimed IP disputes, delaying programs 18 months.
  • Generate Biomedicines' GD-1 enters clinic first, capturing 40% IO partnerships by Q4 2025.

What makes Ampersand unique

  • AND Platform creates modular AND-Body therapeutics localized to diseased tissues only.
  • Address Map computationally identifies precise tissue targets avoiding off-tissue toxicity.
  • Combines localizer for anchoring and actuator for disease-specific biology restoration.

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Funding

Total Funding

$115M

Above

Industry Average

Funded Over

2 Rounds

Series B funding is typically for startups that have proven their business model and need more funding to expand rapidly—often by entering new markets or adding more products. Investors are usually venture capital firms that specialize in later-stage investments.
Series B Funding Comparison
Above Average

Industry standards

$35M
$45M
Linktree
$65M
Substack
$65M
Ampersand
$100M
ClickUp

Growth & Insights and Company News

Headcount

6 month growth

-5%

1 year growth

-5%

2 year growth

-4%
MedCity News
Mar 19th, 2025
Ampersand Biomedicines Secures $65M Funding

Ampersand Biomedicines secured $65 million in Series B funding to advance its drug delivery technology, Address, Navigate, and Design (AND), which targets disease-specific tissues to minimize side effects. The funding, led by Flagship Pioneering and new investor Eli Lilly, will support preclinical research in immuno-oncology and immuno-inflammation. Ampersand also has collaborations with Pioneering Medicines and Pfizer focused on obesity.

GlobeNewswire
Mar 19th, 2025
Ampersand Biomedicines Raises Series B Financing and Highlights Pipeline Advancements

$65 million in Series B funding secured from investors, including founder Flagship Pioneering and Eli Lilly & Company Two lead programs in...

PR Newswire
Nov 20th, 2024
Flagship Pioneering Announces Two New Agreements With Ampersand Biomedicines And Montai Therapeutics Under Its Strategic Partnership With Pfizer

Ampersand's AND™ Platform will be used to identify programmed biologics for the treatment of obesity-related targets. Montai's CONECTA™ AI platform will be used to identify small molecules directed to a potential Non-Small Cell Lung Cancer-related target. Collaborations will leverage Pfizer's deep expertise in early discovery and development for cardiometabolic and cancer treatments, two priority therapeutic areas for the company

Travel Weekly
Apr 29th, 2024
Rwanda park using electric motorcycles to monitor wildlife

Akagera National Park in Rwanda has acquired two electric motorcycles from the company Ampersand to use for wildlife tracking and park operations.

DDW (Drug Discovery World)
Jan 4th, 2024
Ampersand Biomedicines acquires antibody discovery company

Ampersand Biomedicines has announced the acquisition of antibody discovery technology company AbCheck, previously a wholly-owned subsidiary of Affimed.

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