SiSaf Ltd logo — Delivering on the promise of RNA therapeutics

SiSaf Ltd

Delivering on the promise of RNA therapeutics

Founded 2008 United Kingdom Guildford, United Kingdom 19 employees Series B Total: $21.83M Biotechnology, Health Care +1

General Information

Company Name SiSaf Ltd
Founded Year 2008
Location United Kingdom Guildford, United Kingdom
Founders / Decision Makers
Team member
Employees 19
Industries Biotechnology, Health Care, Pharmaceutical
Funding Stage Series B
Business Model B2B, Platform, B2B2C
Revenue Model Licensing, Project Based, Product Sales
Social

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About SiSaf Ltd

SiSaf Ltd, headquartered in the United Kingdom, is a pioneering company in RNA delivery and therapeutics. Founded in 2008, the company has carved a niche in the Biotechnology, Health Care, and Pharmaceutical industries with its innovative approach to addressing the limitations of existing RNA delivery technologies.

The company has developed its proprietary Bio-Courier® technology, which focuses on the hybridization of organic materials with inorganic bioabsorbable silicon, ultimately enhancing the stability and efficacy of RNA therapeutics. Their cutting-edge silicon stabilized hybrid lipid nanoparticles (sshLNP) are leading the charge in tackling rare genetic disorders through improved RNA transfection efficiency.

Under the leadership of founder and biomaterials expert Dr Suzanne Saffie-Siebert, SiSaf has attracted significant venture capital backing. Their most recent funding round, a $13.20M Series B investment in November 2020, was led by esteemed investors such as Vickers Venture Partners and Future Fund, enabling them to build a robust patent portfolio and scalable technological infrastructure.

Business keywords: RNA therapeutics, Bio-Courier technology, silicon stabilized hybrid lipid nanoparticles, Rare genetic disorders, Drug delivery, Gene therapy, Drug development, Corneal Dystrophy, Osteopetrosis, Keloid scars, Biomaterials, Research partnerships, Venture capital backed, Private company, Intellectual property

Services & Products

Development of RNA therapies
Proprietary RNA delivery technology
Research and development
Partnerships for therapy co-development
Pilot manufacturing

Target Customers

Healthcare providers Research institutions Biopharmaceutical partners Patients with rare genetic disorders Oncology specialists

Funding Rounds & Investors (6)

View All
Funding Stage Amount Investors Lead Investors Date
Series B $13.20M 2
Vickers Venture Partners, Future Fund
01 Nov 2020
Series B $4.30M 3
Vickers Venture Partners, Invest Northern Ireland +1
01 May 2018
Series A $3.50M 1
Vickers Venture Partners
01 Sep 2016
Grant €330.00K -
01 Jan 2016
Seed £500.00K 1
SVG Partners
01 Oct 2013
Spinout Undisclosed 1
University Ventures
01 Jan 2008

SiSaf Ltd Alternatives & Competitors

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FAQ About SiSaf Ltd

Delivering on the promise of RNA therapeutics
SiSaf Ltd was founded in 2008.
SiSaf Ltd is headquartered in Guildford, United Kingdom.
SiSaf Ltd operates in Biotechnology, Health Care and Pharmaceutical. Its work centres on RNA therapeutics, Bio-Courier technology, silicon stabilized hybrid lipid nanoparticles and Rare genetic disorders. Its customers include Healthcare providers, Research institutions and Biopharmaceutical partners.
SiSaf Ltd has a B2B, Platform and B2B2C business model. Its revenue comes from Licensing, Project Based and Product Sales.
SiSaf Ltd has approximately 19 employees.
SiSaf Ltd has completed 6 funding rounds, raising a total of $21.83M. The latest funding stage is Series B.
SiSaf Ltd offers: Development of RNA therapies, Proprietary RNA delivery technology, Research and development, Partnerships for therapy co-development, Pilot manufacturing.
Top alternatives and competitors to SiSaf Ltd include Hopewell Therapeutics, Inc., Elixirgen Therapeutics, Inc., Arcturus Therapeutics. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
SiSaf Ltd and Hopewell Therapeutics, Inc. are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for SiSaf Ltd, https://bouncewatch.com/company/sisaf-ltd, updated 26 September 2026. When citing, please name BounceWatch and link this page.

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