United States · 
What does ClearSky invest in?
ClearSky invests most often at Series B and Series A (63% of the rounds on record), in sectors such as Cybersecurity and Energy Transition.
ClearSky highlights
- 01
1 cheques in the last 12 months
- 02
Mostly Series B and Series A: 63% of its rounds
- 03
Sole investor in 1 rounds, median $25M
What they do
ClearSky is a venture capital and growth equity firm investing in innovative companies in the cybersecurity and energy transition sectorsFrom their own website
- Type
- VC firm (from a list, unverified)
- Cheque size
- Not stated
- Stages
- SeedSeries ASeries BGrowthPre-IPO
- Sectors
- CybersecurityEnergy Transition
- Based in
- West Palm Beach, United States
- Cold pitches
- Not accepted
The record
Every round we can evidence, newest first8 appearances
- 2026
1 round
- Sept
- 2019
4 rounds
- Dec
- Sept
- Sept
- Apr
- 2018
2 rounds
- Nov
- Jun
- 2017
1 round
- Apr
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
The team
Named by the firm itself, on a filing, its Form ADV or its company registration10 named
AWAlexander WeissManaging DirectoriFiling they signed
CECharlie EinsmannManager of Clear Sky Management, LLC, ManageriFiling they signed
CCChristopher CrowManager of the Managing MemberiFiling they signed
DZDain ZaitzManager of the Managing MemberiFiling they signed
ESErik StraserDirectoriFiling they signed
JHJames HuffManaging DirectoriFiling they signed
JLJay LeekDirectoriFiling they signed
PKPeter KuperDirectoriFiling they signed
SJSamuel JackninManager of Clear Sky Management, LLC, ManageriFiling they signed
SFSteven FosterManaging DirectoriFiling they signed
We also hold 18 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
What the register says
From the firm's own filings with the SEC, which it must file accurately by law
$716Mgross assets of its fundsOct 2026
Exemptreporting adviserventure or small private funds
- Legal name
- Clearsky Advisors LLC
- SEC number
- CRD 326951
What they claim to have backed
From their own portfolio page (on their website)
0 of 1 we have independently watched raise
Investor Portal
Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.