# Monolith AI funding: rounds and investors > Monolith AI has raised $265M across 5 rounds since 2019. Investors include Charlie Songhurst, Pentech Ventures and Insight Partners. Source: https://millionrounds.com/company/monolith-ai (Millionrounds; every figure on the page links to its filing or article) United Kingdom · [Series B startup](https://millionrounds.com/companies) # Who invested in *Monolith AI* 5 rounds we have observed, with the 10 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. AI Big Data & Analytics Chemicals & Materials Funding summary Updated 26 Oct 2026 **$265M** raised across 5 rounds since 2019, from 6 sources **$2.4M** Round **$9.6M** Series A **$3.8M** Series A **$3.9M** Series A **$245M** Series B - **Latest round:** Series B, $245M Jul 2025 - **Step-up i:** 62.7× - **Investors:** 10 (1 led) See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2019 2020 2021 2022 2023 2024 2025 **$2.4M** Round **$9.6M** Series A **$3.8M** Series A **$3.9M** Series A **$245M** Series B - **First round:** Round, $2.4M - **Biggest round:** $245M - **Usual gap between rounds:** 2.2 years ## The rounds - **Jul 2025** Series B **$245M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Sept 2024** Series A **$3.9M** *2 new* [Warburg Pincus](https://millionrounds.com/fund/warburg-pincus) [TPG](https://millionrounds.com/fund/tpg) Shares issued, filed with Companies House (SH01); no report of this raise yet and 1 other - **Dec 2023** Series A **$3.8M** No investor was named in the report. Shares issued, filed with Companies House (SH01); no report of this raise yet - **Aug 2021** Series A **$9.6M** *4 new* *1 returning* [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) [Ascension](https://millionrounds.com/fund/ascension) [IP Group](https://millionrounds.com/fund/ip-group) [Charlie Songhurst](https://millionrounds.com/fund/charlie-songhurst) [Founders Factory](https://millionrounds.com/fund/founder-s-factory) Source recorded - **May 2019** Round **$2.4M** *4 new* [Pentech Ventures](https://millionrounds.com/fund/pentech-ventures) Lead [Charlie Songhurst](https://millionrounds.com/fund/charlie-songhurst) [Ascension Ventures](https://millionrounds.com/fund/ascension-ventures) Stanford Angels Reported by Uktech ## Funding filed with regulators Monolith AI filed 7 raises, $265M in all. Filings say how much was sold and to how many investors; they never name the investors. - Aug 2025 **$225M** UK share allotment - Jul 2025 **$326K** UK share allotment - Jul 2025 **$20M** UK share allotment - Sept 2024 **$3.9M** UK share allotment - Dec 2023 **$3.8M** UK share allotment - Aug 2021 **$12M** UK share allotment - Jun 2021 **Amount not stated** UK share allotment ## Who was in which round The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led. **Round** 2019 **Series A** 2021 **Series A** 2023 **Series A** 2024 **Series B** 2025 [Charlie Songhurst](https://millionrounds.com/fund/charlie-songhurst) [Pentech Ventures](https://millionrounds.com/fund/pentech-ventures) L [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) [Warburg Pincus](https://millionrounds.com/fund/warburg-pincus) [TPG](https://millionrounds.com/fund/tpg) [Ascension](https://millionrounds.com/fund/ascension) [IP Group](https://millionrounds.com/fund/ip-group) [Founders Factory](https://millionrounds.com/fund/founder-s-factory) [Ascension Ventures](https://millionrounds.com/fund/ascension-ventures) Stanford Angels ## Everyone who backed them [Charlie Songhurst](https://millionrounds.com/fund/charlie-songhurst) VC firm **2** rounds [Pentech Ventures](https://millionrounds.com/fund/pentech-ventures) VC firm **1** round, led 1 [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) VC firm **1** round [Warburg Pincus](https://millionrounds.com/fund/warburg-pincus) Private equity **1** round [TPG](https://millionrounds.com/fund/tpg) Private equity **1** round [Ascension](https://millionrounds.com/fund/ascension) VC firm **1** round [IP Group](https://millionrounds.com/fund/ip-group) VC firm **1** round [Founders Factory](https://millionrounds.com/fund/founder-s-factory) Accelerator **1** round [Ascension Ventures](https://millionrounds.com/fund/ascension-ventures) Corporate VC **1** round Stanford Angels no record of our own yet **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=monolith-ai). ## Also claim to have backed them These 2 firms list Monolith AI as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above. [Founders Factory Africa](https://millionrounds.com/fund/founders-factory-africa) VC firm Per its own site [Stanford Angels of the United Kingdom](https://millionrounds.com/fund/stanford-angels-of-the-united-kingdom) Angel network Per its own site ## Quick answers about Monolith AI ### Who invested in Monolith AI? Monolith AI's investors include Charlie Songhurst, Pentech Ventures, Insight Partners, Warburg Pincus and TPG, and 5 more on record. ### How much has Monolith AI raised? Monolith AI has raised $265M across 5 rounds since 2019. ### When did Monolith AI last raise? Monolith AI's most recent round was a Series B of $245M in Jul 2025. ### What was Monolith AI's biggest round? Its most recent round, $245M in Jul 2025, is also its largest on record. ### Who backed Monolith AI first? Monolith AI's first round on record, in May 2019, was backed by Pentech Ventures, Charlie Songhurst and Ascension Ventures and 1 others. ### What stage is Monolith AI at? Monolith AI's latest named round is a Series B, in Jul 2025. ### Where is Monolith AI based? Monolith AI is based in the United Kingdom. ### Who led Monolith AI's rounds? Pentech Ventures led the Undisclosed round in 2019. ## Companies like Monolith AI In the same sector, and raised in the last eighteen months. 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