United States · Series D startup

Who invested in Solexel

7 rounds we have observed, with the 15 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.

Cleantech

Funding summaryUpdated 26 Oct 2026

$224Mraised across 7 rounds since 2012, from 7 sources

$25MSeries C$11MSeries C$55MSeries C$7.5MDebt$31MSeries D$25MDebt$70MSeries D

Latest round: Series D, $70MAug 2015
Step-upi: 2.8×
Investors: 15

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.

201320142015

$25MSeries C$11MSeries C$55MSeries C$7.5MDebt$31MSeries D$25MDebt$70MSeries D

First round: Series C, $25M
Biggest round: $70M
Usual gap between rounds: 7 months

The rounds

Aug 2015
Series D$70M1 new9 returning
From a historical funding recordSEC filing: $95M sold, first sale Jul 2014
Jan 2015
Debt$25M1 new
- Opus Bank
From a historical funding recordSEC filing: $64M sold, first sale Jul 2014
Jul 2014
Series D$31M2 new8 returning
From a historical funding recordSEC filing: $56M sold, first sale Jul 2014
Nov 2013
Debt$7.5M1 new
- Trinity Capital
From a historical funding recordSEC filing: $55M sold, first sale Jun 2013
Jun 2013
Series C$55M5 new2 returning
Reported by sec.govSEC filing: $15M sold, first sale Jun 2013
Jul 2012
Series C$11M1 new4 returning
From a historical funding recordSEC filing: $36M sold, first sale May 2012
Apr 2012
Series C$25M4 new
Reported by greentechmedia.comSEC filing: $25M sold, first sale May 2012

Founders and team

From the SEC filings it signed: 3 on the team.

Marinus (Mark) KerstensExecutive Officeri
Mehrdad MoslehiExecutive Officer, Directori
Michael WingertExecutive Officer, Directori

On the board, as filediGreg WilliamsIra EhrenpreisJan van DokkumLes VadaszMichael CannonReyad Fezzani

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.

Series C2012Series C2012Series C2013Debt2013Series D2014Debt2015Series D2015

Kleiner Perkins Caufield & ByersTechnology PartnersGentry Venture Partners

DAG Ventures

Northgate Capital

GSV Capital

SunPowerKPCB HoldingsDuff, Ackerman and GoodrichSpirox

Everyone who backed them

Kleiner Perkins Caufield & ByersVC firm5rounds

Technology PartnersHedge fund5rounds

Gentry Venture PartnersVC firm4rounds

DAG VenturesVC firm3rounds

Northgate CapitalFamily office3rounds

GSV CapitalInvestment firm3rounds

SunPowerVC firm3rounds

KPCB HoldingsInvestment firm2rounds

Duff, Ackerman and GoodrichVC firm2rounds

SpiroxVC firm2rounds

Jasper Ridge PartnersPrivate equity2rounds

Trinity CapitalVC firm1round

Oak Hill Capital Management, LLCVC firm1round

Opus BankInvestment firm1round

GAFCorporate VC1round

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

Quick answers about Solexel

Who invested in Solexel?

Solexel's investors include Kleiner Perkins Caufield & Byers, Technology Partners, Gentry Venture Partners, DAG Ventures and Northgate Capital, and 10 more on record.

How much has Solexel raised?

Solexel has raised $224M across 7 rounds since 2012.

When did Solexel last raise?

Solexel's most recent round was a Series D of $70M in Aug 2015.

What was Solexel's biggest round?

Its most recent round, $70M in Aug 2015, is also its largest on record.

Who backed Solexel first?

Solexel's first round on record, in Apr 2012, was backed by Kleiner Perkins Caufield & Byers, Technology Partners and Duff, Ackerman and Goodrich and 1 others.