NEWCaplight raises a $16M Series A, led by BlackRock and Fin Capital →
Skip to main content
Caplight Logo









Addition Therapeutics

Addition Therapeutics

Private
South San Francisco, CaliforniaHealthcare & Life Scienceshttps://additiontx.com/

Last Round

Series A

Extension

Dec 22, 2025

Total Funding Raised

$106M

Momentum

Top 25%

of companies Caplight tracks

Company Overview

Addition Therapeutics is a biotechnology company developing a new class of genomic medicines using its all-RNA, non-viral, LNP-based PRINT (Precise RNA-Mediated Insertion of Transgenes) platform to create one-time therapies for chronic and rare diseases.

Sector

Healthcare & Life Sciences

Verticals

Biotechnology, Drug Discovery, Clinical Trials, Precision Medicine

Business Model

B2B

Customer Profile

Services & Consulting

AI Layer

Non-AI

Keywords

gene therapyGLP-1metabolic diseaseweight loss medicationobesity treatmentPRINT platformin vivo gene therapylipid nanoparticleLNPtransgene insertionbiotechgenetic medicinedrug discoveryclinical stage biotech

Historical Pricing

Historical view of private secondary pricing and transaction trends.

Unlock Pricing Charts

Sign up to view complete historical pricing and secondary transactions.

Caplight Momentum Score

Proprietary index based on bid/ask volume and sentiment.

View Momentum History

Track how buyer interest and sentiment changes over time.

Addition Therapeutics Comps

Public and private peers based on sector, stage, and business model.

Addition Therapeutics comps — public and private peers by sector, stage, and business model
CompanyStatusEst. ValuationRev Multiple
OpenAIPrivate$86.0B~40x
CoherePrivate$5.0B--
Competitor 1Public$XX.XBXXx
Competitor 2Public$XX.XBXXx

View Full Comps Set

Access detailed peer comparisons, multiples, and valuation benchmarks.

Addition Therapeutics Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series A ExtensionDec 22, 2025
Series ASep 1, 2023

Addition Therapeutics Investors

Notable investors and investment history

Addition Therapeutics investors
InvestorRounds
BEVCSeries A, Series A Extension
Gates Family FoundationSeries A Extension
Osage University PartnersSeries A, Series A Extension
Gates FoundationSeries A Extension
AbingworthSeries A, Series A Extension
Bill & Melinda Gates FoundationSeries A, Series A Extension
Pivotal bioVenture PartnersSeries A, Seed, Series A Extension

Market signals

Structured signals derived from secondary market and firmographic data.

  • Apr 27, 2026

    Developing a gene therapy for permanent GLP-1 production in liver cells.

  • Dec 22, 2025

    $100M Series A round completed.

Addition Therapeutics Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation
Sign Up to view
Mock Valuation

Addition Therapeutics Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about Addition Therapeutics's valuation, stock price, and market status.

Firmographic Details

HeadquartersSouth San Francisco, California
Employee Range66
Year Founded2021
Last FundingDec 22, 2025

Institutional Data Access

Join leading institutional investors using Caplight to access private market data, discover pricing, and execute secondary block trades.

Requires verified institutional or accredited status.