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AMR Action Fund

Venture capital

Boston · Seed–Growth · 13 people tracked

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Investment thesis

The AMR Action Fund invests equity in clinical-stage, small and mid-size biotech companies developing antimicrobial therapeutics that address WHO and CDC priority pathogens. It backs both traditional small-molecule antibiotics and innovative modalities such as bacteriophages and antibody-based treatments. A globally recognized Scientific Advisory Board supports diligence across antibiotic development, clinical trial design, and manufacturing. The fund builds international syndicates with financial partners, leading or co-leading several investments per year, and leverages relationships with industry limited partners to create value in portfolio companies and drive successful exits. Its stated mission is to bring two to four new antibiotics to patients by the end of the decade.

Source: firm website, verified Sep 29, 2026.

Stage
Seed–Growth
HQ
Boston, Massachusetts, US
Leads rounds
Leads
Instruments
Equity
Founded
2020
Last 12 months
5 investments
AUM
$1B
VC funds
2
Tracked investments
22
IPOs
1
Acquisitions
1

Team · 13 people

from the firm's website & public directories

What they invest in

from 19 of 22 portfolio companies

Biotech ×16Healthtech ×11Medical Devices ×7AI & Machine Learning ×5Digital Health ×5Deep Tech ×3Defense Tech ×2AdTech ×1

HQs:United States×8Canada×1Switzerland×1Spain×1United Kingdom×1Israel×1

Investments · 22 tracked

founders shown can be your intro path

By year:2026 · 52024 · 22023 · 42022 · 12020 · 22016 · 115 dated

Biomxbiomx.comin𝕏NYSE: PHGE

BiomX builds a portfolio of defense and security companies through subsidiaries, partnerships, and acquisitions, focusing on detection systems, aerial technologies, and infrastructure security.

AI & Machine LearningBiotechCybersecurityDeep TechDefense TechHardwareNess Ziona

Jonathan Solomon(Chief Executive Officer)inMerav Bassan(Chief Development Officer)inMarina Wolfson(Chief Financial Officer)inJesse Goodman(Director)Alan Moses(Director)Jonathan Leff(Director)

Co-investorsBaruch Future VenturesNSG VenturesOrbiMedSBI JI Innovation Advisory Ltd.Seventure Partners8VC+2 more

Antabioantabio.cominJan 2024✓ verified

Antabio is a clinical-stage biopharmaceutical company developing novel antibacterial treatments for drug-resistant, Gram-negative bacterial infections identified as critical priorities by the WHO and CDC, with a focus on life-threatening hospital-acquired infections.

BiotechHealthtech

Marc Lemonnier(Chief Executive Officer)inRienk Pypstra(Chief Medical Officer)Gordon Waldron(Chief Financial Officer)inMagdalena Zalacain(Chief Scientific Officer)in

Co-investorsBNP Paribas DéveloppementIRDI SORIDEC GestionOmnes Capital

Centauri Therapeuticscentauritherapeutics.cominFeb 2026✓ verified

Centauri Therapeutics develops the Alphamer platform, a proprietary antibody recruiting molecule technology designed to redirect the immune system against disease targets.

BiotechDigital HealthHealthtechMedical Devices

Co-investorsNCL Technology Ventures Ltd.Boehringer Ingelheim Venture Fund

Pattern Biosciencepattern.bioin𝕏Apr 2023 · $28.7M✓ verified

Pattern develops rapid antibiotic susceptibility and infection diagnostics using single-cell microbiology, which reads the metabolic patterns of individual bacterial cells to deliver ID/AST results in hours without culture steps.

BiotechHealthtechMedical DevicesAustin, US

Nick Arab(Founder & CTO)Ross Johnson(Co-founder & Chief Engineer)inCarey-Ann Burnham(Chief Executive Officer)inTravis Davies(SVP, Operations)inKyle Fieleke(SVP, Corporate Development & Finance)inDavid Bussian(SVP, Clinical, Regulatory & Assay Development)in

Co-investorsIllumina VenturesIllumina Innovation

Adaptive Phage Therapeuticsaphage.comin𝕏Series B · May 2023 · $20M

Aphage develops AI and sensor technologies to identify, track, and classify physical threats across borders, infrastructure, and transportation networks for government and security organizations.

AI & Machine LearningBiotechDefense TechGovTechGaithersburg, IL

Gregory L. Merril(Executive Officer, Director, Promoter)Carl R. Merril(Executive Officer, Director)in

BoardJonathan Leff(Director)inEvan Loh(Director)Jana Jensen(Director)Raymond L. Martz(Director)

Board seatMartin Heidecker· per SEC Form D

Co-investorsHackensack Meridian Health Bear's DenMaryland TEDCOTEDCODeerfield Management CompanySofinnova Ventures

Elion Therapeuticseliontx.cominJun 2024 · $81M

Clinical-stage biotech developing next-generation polyene antifungals for life-threatening invasive fungal infections.

BiotechNew York, US

Kieren Marr(Executive Officer, Director)

BoardJim Flynn(Director)Jonathan Leff(Director)

Board seatMartin Heidecker· per SEC Form D

Co-investorsIllinois VenturesDeerfield Management Company

Rgenta Therapeuticsrgentatx.cominSeed · Jan 2020 · $20M

Rgenta develops orally available small molecule therapies that target RNA to address diseases previously considered undruggable, with programs in oncology (targeting proteins such as MYB in solid tumors and hematologic cancers) and central nervous system repeat expansion disorders like Huntington's disease.

AI & Machine LearningBiotechDeep TechHealthtechCambridge, US

Travis Wager(Co-founder, President and CSO)inHualin Simon Xi(Executive Officer, Director)Zhiping Weng(Co-founder)inSimon Xi(Co-founder and CEO)inJackie Walling(CMO)Debasish Roychowdhury(Director)

Board seatMartin Heidecker· per SEC Form D

Co-investorsDelos CapitalVivo CapitalBoehringer Ingelheim Venture FundKorea Investment PartnersLilly Asia VenturesMatrix Capital Management+1 more

Vedanta Biosciencesvedantabio.comin𝕏Mar 2023 · $110M

Vedanta Biosciences is a clinical-stage biotech developing Live Biotherapeutic Products (LBP) based on defined consortia of bacteria to treat serious gastrointestinal diseases, with an initial focus on preventing recurrent Clostridium difficile infection.

BiotechHealthtechCambridge, US

Bernat Olle(Executive Officer, Director)inDaniel Couto(Executive Officer)inMark Mullikin(Executive Officer)inJeffrey Silber(Executive Officer)inChristopher Viehbacher(Director)

BoardJohn LaMattina(Director)in

Board seatMartin Heidecker· per SEC Form D

Co-investorsK2 HealthVenturesSalica InvestmentsSeventure PartnersBNP ParibasBNP Paribas Asset Management EuropeGlobal Health Investment Fund+1 more

VENATORX PHARMACEUTICALS INCvenatorx.comSeries C · Mar 2022 · $34M

Developing ceftibuten-ledaborbactam etzadroxil, a clinical phase 3-ready oral beta-lactam/beta-lactamase inhibitor combination for complicated urinary tract infections.

BiotechMalvern, US

Christopher J. Burns(Executive Officer, Director)Daniel C. Pevear(Executive Officer)Michael Diem(Director)Vincent J. Milano(Director)Ezra Felker(Executive Officer)Shelley Chu(Director)

Board seatMartin Heidecker· per SEC Form D

Co-investorsBioAdvanceForesite CapitalVersant Ventures

BioVersysbioversys.comin𝕏Series C · Jan 2023 · $9M

BioVersys is a clinical-stage biotech company focused on developing antimicrobial therapies to address unmet medical needs in infectious diseases, including tuberculosis and hospital-acquired infections.

BiotechDeep TechHealthtechMedical DevicesBasel, CH

Dr. Marc Gitzinger(Chief Executive Officer & Founder)

Co-investorsStartAngels Network

F2Gf2g.com

F2G develops medicines to treat serious fungal diseases where existing therapies have failed or are ineffective.

BiotechDigital HealthHealthtechMedical Devices

Co-investorsAdvent Life SciencesAisling CapitalAstellas Venture Management LLCBrace PharmaSofinnova PartnersSunstone Capital+3 more

Libra Therapeuticslibratherapeutics.comin𝕏Series A · Sep 2020 · $29M

Libra Therapeutics develops small molecule therapeutics targeting lysosomal function and autophagy to treat neurodegenerative diseases including ALS, Parkinson's, Alzheimer's, and Huntington's disease.

BiotechLongevityMedical Devices

Dr. Gill(Chief Scientific Officer)

Co-investorsDolby Family VenturesEpidarex Capital

Peptilogicspeptilogics.comin𝕏

Peptilogics is a clinical-stage surgical therapeutics company developing zaloganan (PLG0206), a novel anti-biofilm drug to treat and prevent medical device-related infections such as prosthetic joint infections.

BiotechHealthtechMedical DevicesPittsburg, US

Jonathan Steckbeck(Executive Officer, Director)in

BoardStephan Dietrich(Director)in

Co-investorsAAF Management Ltd.Alpha Wave GlobalMountain State CapitalNarya CapitalPresight CapitalRiverfront Ventures, LLC+5 more

Telumtherapeuticstelumtherapeutics.comin𝕏

Telum Therapeutics develops antimicrobial drugs using synthetic biology and AI-driven machine learning, specializing in engineered lytic proteins to address multidrug-resistant infections.

AI & Machine LearningBiotechDigital HealthHealthtechMedical DevicesNoáin, ES

Subhendu Basu(Chief Executive Officer)inRoberto Díez(Chief Operating Officer)inDiana Gutiérrez(Chief Scientific Officer)in

Co-investorsInvivo Capital Partners

Trellisgotrellis.cominJul 2026 · $9M

Trellis is an AI-driven platform that automates advertising, pricing, and profitability optimization for eCommerce sellers on marketplaces like Amazon, Walmart, and Shopify.

AdTechAI & Machine LearningE-commerceOttawa, CA

Denis Leclair(Founder)inFahim Sheikh(Founder)in

Co-investorsOkapi Venture CapitalSentiero VenturesCraft VenturesEaston CapitalNew Science VenturesStout Street Capital

Trellisjointrellishealth.cominJul 2026 · $9M

Trellis Health provides personalized health insights that track individual changes over time rather than comparing against population norms.

Digital HealthFemTechHealthtech

Co-investorsPALETTE VENTURESSwizzle VenturesEaston CapitalNew Science Ventures

Trellistrellis.com.pkin𝕏Jul 2026 · $9M

Trellis is a fintech company operating in Pakistan that provides financial inclusion solutions and digital transformation services.

Digital HealthFintechImpact & Social GoodPropTechPakistan, PK

Sohail Hasnie(CEO)

Co-investorsGobi PartnersInsitorEaston CapitalNew Science Ventures

Trellis BioSciencetrellisbio.cominJan 2026 · $9M

Trellis Bioscience develops human monoclonal antibody therapeutics targeting bacterial, viral, and cancer indications.

BiotechHealthtechRedwood City, US

Larry Kauvar(Chief Science Officer)Stefan Ryser(President and Chief Executive Officer)inGeoff Dillon(Chief Business Officer)inElisabeth Whitney(Chief Operating Officer)Nora Mende(Chief Financial Officer)

Co-investorsEaston CapitalNew Science Ventures

Utility Therapeuticsutilitytherapeutics.comacquired by Alembic Pharmaceuticals

Obtained U.S.

Co-investors3B Future Health Fund

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

Abexxa BiologicsTenNor TherapeuticsTennorx

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.

Exits · 2

1 IPOs · 1 acquisitions

BiomxNYSE: PHGEUtility Therapeuticsacq. by Alembic Pharmaceuticals

Portfolio news

latest coverage across their companies

Frequently asked questions

How many investments has AMR Action Fund made?
AMR Action Fund has 22 tracked investments, 2 of which have exited, including 5 dated in the last 24 months.
What stage does AMR Action Fund invest at?
AMR Action Fund invests at the Seed, Series A, Series B, Series C, Growth stages.
What sectors does AMR Action Fund focus on?
AMR Action Fund focuses on Biotech, Healthtech, Impact & Social Good, Medical Devices.
Where is AMR Action Fund located?
AMR Action Fund is headquartered in Boston, US.
Does AMR Action Fund lead rounds?
Yes, AMR Action Fund leads investment rounds.
Who does AMR Action Fund co-invest with?
AMR Action Fund most often shares deals with Seventure Partners, Foresite Capital, Illumina Ventures, among 29 tracked co-investors.
What size deals does AMR Action Fund back?
Across 6 deals with disclosed amounts, AMR Action Fund has joined rounds of $9M – $110M (median $31.4M).

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