United States · Series D startup

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

Funding summaryUpdated 26 Oct 2026

$44Mraised across 5 rounds since 2011, from 5 sources

$4.4MVenture$4.0MSeries B$3.0MDebt$11MSeries C$22MSeries D
Latest round
Series D, $22MOct 2017
Step-upi
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.

2011201220132014201520162017
$4.4MVenture$4.0MSeries B$3.0MDebt$11MSeries C$22MSeries D
First round
Venture, $4.4M
Jan 2011
Biggest round
$22M
Series D · Oct 2017
Usual gap between rounds
2.1 years
the median of 4

The rounds

  1. Oct 2017
    Series D$22M1 new
    • Constellation Technology Ventures/ IKEA Group

    Reported by FinSMEsSEC filing: $22M sold, first sale Sept 2017

  2. Aug 2015
    Series C$11M1 new
    • Peter O’Brien

    From a historical funding recordSEC filing: $11M sold, first sale Aug 2015

  3. Dec 2013
    Debt$3.0M1 new

    Reported by bizjournals.com

  4. Mar 2013
    Series B$4.0M

    No investor was named in the report.

    Reported by finsmes.comSEC filing: $4.0M sold, first sale Feb 2013

  5. Jan 2011
    Venture$4.4M

    No investor was named in the report.

    Reported by masshightech.comSEC filing: $4.4M sold, first sale Dec 2010

Founders and team

From the SEC filings it signed: 2 on the team.

  • Clayton J. SiegertExecutive Officeri
  • Thomas J. HynesExecutive Officer, Directori

On the board, as filediRichard J. CannyWilliam 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.

Venture2011Series B2013Debt2013Series C2015Series D2017WindSail Capital GroupConstellation Technology Ventures/ IKEA GroupPeter O’Brien

Everyone who backed them

Constellation Technology Ventures/ IKEA Groupno record of our own yet1round
Peter O’Brienno record of our own yet1round

Missing a round, or an investor who was in one? Tell us.

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.

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