Insights

Innovative Genomic Platforms Replay's development of disruptive genome writing technologies, including the high payload capacity HSV vectors and hypoimmunogenic platforms, positions them as key providers of advanced gene therapy delivery systems suitable for a variety of therapeutic applications.

Strategic Collaborations Recent collaborations, such as the research partnership with Syena on T cell receptor based therapies, highlight Replay’s focus on expanding its portfolio in cell and immune therapies, opening opportunities for strategic partnerships and joint ventures.

Strong Funding Trajectory With substantial funding of $55 million and ongoing grants from organizations like the Bill & Melinda Gates Foundation, Replay demonstrates solid financial backing, which can be leveraged for future investments in research and partnership development.

Market Potential in Rare Diseases The launch of Eudora targeting genetic retinal diseases indicates a focus on rare and genetic disorders, presenting opportunities to connect with biotech and pharma companies seeking innovative treatments in this niche market.

Emerging Technology Leader Replay’s focus on cutting-edge genome writing and platform technologies, combined with a relatively small but agile team, positions it as a potential key player for partners looking to co-develop novel genomic medicine solutions.

Replay Tech Stack

Replay uses 8 technology products and services including Wix, Webpack, Apple iCloud Mail, and more. Explore Replay's tech stack below.

  • Wix
    Content Management System
  • Webpack
    Development
  • Apple iCloud Mail
    Email
  • React
    Javascript Frameworks
  • Next.js
    Javascript Frameworks
  • Heroku
    Platform As A Service
  • Node.js
    Programming Languages
  • Google Tag Manager
    Tag Management

Replay's Email Address Formats

Replay uses at least 1 format(s):
Replay Email FormatsExamplePercentage
FLast@replay.bioJDoe@replay.bio
46%
First.Last@replay.bioJohn.Doe@replay.bio
4%
FLast@replay.bioJDoe@replay.bio
46%
First.Last@replay.bioJohn.Doe@replay.bio
4%

Frequently Asked Questions

What is Replay's stock symbol?

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Replay is a publicly traded company; the company's stock symbol is RPLA.

What is Replay's official website and social media links?

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Replay's official website is replay.bio and has social profiles on LinkedInCrunchbase.

What is Replay's SIC code NAICS code?

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Replay's SIC code is 8733 - Noncommercial Research Organizations NAICS code is 541714 - Research and Development in Biotechnology (except Nanobiotechnology).

How many employees does Replay have currently?

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As of December 2025, Replay has approximately 35 employees across 2 continents, including North AmericaEurope. Key team members include Head Of Marketing: C. B.Co-Founder And Lead Blockchain Engineer: L. M. A.Founder: A. W.. Explore Replay's employee directory with LeadIQ.

What industry does Replay belong to?

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Replay operates in the Biotechnology Research industry.

What technology does Replay use?

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Replay's tech stack includes WixWebpackApple iCloud MailReactNext.jsHerokuNode.jsGoogle Tag Manager.

What is Replay's email format?

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Replay's email format typically follows the pattern of FLast@replay.bio. Find more Replay email formats with LeadIQ.

How much funding has Replay raised to date?

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As of December 2025, Replay has raised $55M in funding. The last funding round occurred on Jul 25, 2022 for $55M.

When was Replay founded?

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Replay was founded in 2021.

Replay

Biotechnology ResearchCalifornia, United States11-50 Employees

Replay is a genome writing company, which aims to define the future of genomic medicine through reprogramming biology by writing and delivering big DNA. The Company has assembled a toolkit of disruptive platform technologies – including a high payload capacity HSV platform, a hypoimmunogenic platform, and a genome writing platform – to address the scientific challenges currently limiting clinical progress and preventing genomic medicine from realising its full potential. The Company’s hub-and-spoke business model separates technology development within Replay from therapeutic development in product companies, which leverage the technology platforms. For example, Replay’s synHSV™ technology, a high payload capacity HSV vector capable of delivering up to 30 times the payload of AAV, is utilized by Replay’s four gene therapy product companies, bringing big DNA treatments to diseases affecting the skin, eye, brain, and muscle. The Company has, additionally, established an enzyme writing product company engaging its evolutionary inference machine learning and genome writing technology to optimize functionality. Replay is led by a world-class team of academics, entrepreneurs and industry experts.

Section iconCompany Overview

Website
replay.bio
SIC Code
8733 - Noncommercial Research Organizations
Stock Symbol
RPLA
NAICS Code
541714 - Research and Development in Biotechnology (except Nanobiotechnology)
Founded
2021
Employees
11-50

Section iconFunding & Financials

  • $55M

    Replay has raised a total of $55M of funding over 2 rounds. Their latest funding round was raised on Jul 25, 2022 in the amount of $55M.

  • $10M$25M

    Replay's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $55M

    Replay has raised a total of $55M of funding over 2 rounds. Their latest funding round was raised on Jul 25, 2022 in the amount of $55M.

  • $10M$25M

    Replay's revenue is estimated to be in the range of $10M$25M

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