# XL Hybrids funding: rounds and investors > XL Hybrids has raised $44M across 5 rounds since 2011. Investors include WindSail Capital Group, Constellation Technology Ventures/ IKEA Group and Peter... Source: https://millionrounds.com/company/xl-hybrids (Millionrounds; every figure on the page links to its filing or article) United States · [Series D startup](https://millionrounds.com/companies) # Who invested in *XL Hybrids* 5 rounds we have observed, with the 3 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. Manufacturing Follow XL Hybrids and see its new rounds in your feed. [Start following](https://millionrounds.com/login?join=1&why=follow&next=%2Fcompany%2Fxl-hybrids) Funding summary Updated 27 Oct 2026 **$44M** raised across 5 rounds since 2011, from 5 sources **$4.4M** Venture **$4.0M** Series B **$3.0M** Debt **$11M** Series C **$22M** Series D - **Latest round:** Series D, $22M Oct 2017 - **Step-up i:** 2.1× - **Investors:** 3 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. 2011 2012 2013 2014 2015 2016 2017 **$4.4M** Venture **$4.0M** Series B **$3.0M** Debt **$11M** Series C **$22M** Series D - **First round:** Venture, $4.4M - **Biggest round:** $22M - **Usual gap between rounds:** 2.1 years ## The rounds - **Oct 2017** Series D **$22M** *1 new* Constellation Technology Ventures/ IKEA Group Reported by FinSMEs SEC filing: $22M sold, first sale Sept 2017 - **Aug 2015** Series C **$11M** *1 new* Peter O’Brien From a historical funding record SEC filing: $11M sold, first sale Aug 2015 - **Dec 2013** Debt **$3.0M** *1 new* [WindSail Capital Group](https://millionrounds.com/fund/windsail-capital-group) Reported by bizjournals.com - **Mar 2013** Series B **$4.0M** No investor was named in the report. Reported by finsmes.com SEC filing: $4.0M sold, first sale Feb 2013 - **Jan 2011** Venture **$4.4M** No investor was named in the report. Reported by masshightech.com SEC filing: $4.4M sold, first sale Dec 2010 ## Founders and team From the SEC filings it signed: 2 on the team. - **Clayton J. Siegert** Executive Officer i - **Thomas J. Hynes** Executive Officer, Director i On the board, as filed i *Richard J. Canny* *William K. Aulet* ## 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. **Venture** 2011 **Series B** 2013 **Debt** 2013 **Series C** 2015 **Series D** 2017 [WindSail Capital Group](https://millionrounds.com/fund/windsail-capital-group) Constellation Technology Ventures/ IKEA Group Peter O’Brien ## Everyone who backed them [WindSail Capital Group](https://millionrounds.com/fund/windsail-capital-group) VC firm **1** round Constellation Technology Ventures/ IKEA Group no record of our own yet **1** round Peter O’Brien 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=xl-hybrids). ## Quick answers about XL Hybrids ### Who invested in XL Hybrids? XL Hybrids's investors include WindSail Capital Group, Constellation Technology Ventures/ IKEA Group and Peter O’Brien. ### How much has XL Hybrids raised? XL Hybrids has raised $44M across 5 rounds since 2011. ### When did XL Hybrids last raise? XL Hybrids's most recent round was a Series D of $22M in Oct 2017. ### What was XL Hybrids's biggest round? Its most recent round, $22M in Oct 2017, is also its largest on record. ### Who backed XL Hybrids first? XL Hybrids's first round on record, in Dec 2013, was backed by WindSail Capital Group. ### What stage is XL Hybrids at? XL Hybrids's latest named round is a Series D, in Oct 2017. ### Where is XL Hybrids based? XL Hybrids is based in the United States. ## Companies like XL Hybrids In the same sector, and raised in the last eighteen months. [**Ayar Labs** $904M · Oct 2026](https://millionrounds.com/company/ayar-labs)[**Apex** $1.1B · Oct 2026](https://millionrounds.com/company/apex)[**ZwitterCo** $58M · Oct 2026](https://millionrounds.com/company/zwitterco)[**Peak Energy** $163M · Oct 2026](https://millionrounds.com/company/peak-energy)[**Arda** $233M · Oct 2026](https://millionrounds.com/company/arda)[**Origin** $121M · Oct 2026](https://millionrounds.com/company/origin) ## Find investors like these Search every investor by what they have actually funded, then narrow to your stage and market. Free. Open the investor searchOr these rounds in the app