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Liquid Piston

Bloomfield, US · Delaware corporation · 2 known investors

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LiquidPiston develops compact rotary internal combustion engines based on a patented thermodynamic cycle, offering improvements in efficiency, weight, size, vibration, and noise, with engines scalable from 1HP to over 1000HP. It focuses on military and aerospace propulsion and power generation, with plans to serve industrial, marine, UAV, urban mobility, and automotive markets.</parameter> <parameter name="hq_city">Bloomfield

Deep Tech Defense Tech Energy Hardware Mobility & Transportation

Founders & leadership

AS

Alexander Shkolnik

Alexander ShkolnikCo-founder

NS

Nikolay Shkolnik Co-founder · Technical PrincipalNikolay Shkolnik is co-founder of LiquidPiston, an MIT-incubated company developing rotary internal combustion engines based on proprietary thermodynamic research.

JN

James Norrod

James NorrodExecutive

Board

WF

William FrezzaBoard director

PS

Per SunebyBoard director

DP

David PattersonBoard director

DH

David HabigerBoard director

SK

Semyon KoganBoard director

Investors · 2

Adams Capital Management✓ confirmed by Liquid PistonPittsburgh · $1M – $5M

How we know: the company's own site · Not right? Tell us

Colle Capital Partnerslisted by Colle Capital PartnersNew York · $500K – $2M

How we know: Colle Capital Partners's portfolio page · Not right? Tell us

Reported raises · per SEC filings

Form D private placements

$4.2M disclosed across 11 of 12 rounds · 2015–2026

▶$500KraisedMar 2026 · 1 investors · Other Energy

Rule 506(c)

Officers, directors & promoters on the filing

Per SunebyExecutive Officer, Director
Alexander ShkolnikExecutive Officer, Director
Nikolay ShkolnikExecutive Officer, Director
Vincenzo PerroneExecutive Officer
Peter HartmanExecutive Officer

Offering amount: $500K
Amount sold: $500K
First sale: Mar 2026
Incorporated: Corporation, Delaware
Federal exemptions: 06c

Full filing on SEC EDGAR ↗

▶$25KraisedNov 2024 · 1 investors · Other Energy

Rule 506(c)

Officers, directors & promoters on the filing

Per SunebyDirector
Alexander ShkolnikExecutive Officer, Director
Nikolay ShkolnikExecutive Officer, Director

Offering amount: $230K
Amount sold: $25K
First sale: Nov 2024
Incorporated: Corporation, Delaware
Federal exemptions: 06c

Full filing on SEC EDGAR ↗

▶$50KraisedOct 2023 · 1 investors · Other Energy

Rule 506(c)

Officers, directors & promoters on the filing

Per SunebyDirector
Nikolay ShkolnikExecutive Officer, Director
Alexander ShkolnikExecutive Officer, Director

Offering amount: $2.3M
Amount sold: $50K
Minimum investment: $25K
First sale: Jun 2023
Incorporated: Corporation, Delaware
Federal exemptions: 06c

Full filing on SEC EDGAR ↗

▶$1MofferedJun 2021 · Other Energy

Rule 506(c)

Officers, directors & promoters on the filing

Alexander ShkolnikExecutive Officer, Director
Nikolay ShkolnikExecutive Officer, Director
Per SunebyDirector

Offering amount: $1M
Incorporated: Corporation, Delaware
Federal exemptions: 06c

Full filing on SEC EDGAR ↗

▶$126.9KraisedMar 2020 · 5 investors · Other Energy

Rule 506(c)

Officers, directors & promoters on the filing

Nikolay ShkolnikDirector
Alexander ShkolnikExecutive Officer, Director
Per SunebyDirector

Offering amount: $750K
Amount sold: $126.9K
First sale: Feb 2020
Incorporated: Corporation, Delaware
Federal exemptions: 06c

Full filing on SEC EDGAR ↗

▶$75KraisedSep 2019 · 2 investors · Other Energy

Rule 506(c)

Officers, directors & promoters on the filing

Alexander ShkolnikExecutive Officer, Director
Nikolay ShkolnikDirector
Per SunebyDirector

Offering amount: $500K
Amount sold: $75K
First sale: Aug 2019
Incorporated: Corporation, Delaware
Federal exemptions: 06c

Full filing on SEC EDGAR ↗

▶$250KraisedJun 2019 · 1 investors · Other Energy

Rule 506(b)

Officers, directors & promoters on the filing

Nikolay ShkolnikDirector
Per SunebyDirector
Alexander ShkolnikExecutive Officer, Director

Offering amount: $250K
Amount sold: $250K
First sale: Mar 2019
Incorporated: Corporation, Delaware
Federal exemptions: 06b

Full filing on SEC EDGAR ↗

▶$299.1KraisedJan 2019 · 43 investors · Other Energy

Rule 506(c)

Officers, directors & promoters on the filing

Peter SunebyDirector
Nikolay ShkolnikDirector
Alexander ShkolnikExecutive Officer, Director
Tony TetherDirector

Offering amount: $299.1K
Amount sold: $299.1K
Sales commissions: $9K
Placement agents: WeFunder Portal LLC
First sale: Jul 2017
Incorporated: Corporation, Delaware
Federal exemptions: 06c

Full filing on SEC EDGAR ↗

Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.

Related companies · 1

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Companies working in the same space as Liquid Piston.

Non-dilutive funding · 8 SBIR/STTR awards

Federal grants — no equity taken

Agency	Phase	Year	Amount
U.S. ArmyArmy	Phase II	2022	$441.1K
U.S. Air ForceAir Force	Phase I	2022	$50K
U.S. Air ForceAir Force	Phase II	2021	$750K
U.S. Air ForceAir Force	Phase II	2021	$748.6K
U.S. Air ForceAir Force	Phase ISTTR	2021	$149.9K
U.S. ArmyArmy	Phase I	2020	$116.5K
U.S. ArmyArmy	Phase I	2020	$100K
U.S. ArmyArmy	Phase I	2006	$70K

Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.

In the news

LiquidPiston Launches Reg CF Funding Round to Unlock up to $7M in U.S. Army Funding via SBIR CATALYST Awardfinance.yahoo.com · Apr 2026

LiquidPiston Raises $30 Million in Reg A+ Crowdfunding Roundglobenewswire.com · Oct 2023

LiquidPiston Announces Closing Date for Crowdfunding Roundfinance.yahoo.com · Sep 2023

Frequently asked questions

What does Liquid Piston do?: LiquidPiston develops compact rotary internal combustion engines based on a patented thermodynamic cycle, offering improvements in efficiency, weight, size, vibration, and noise, with engines scalable from 1HP to over 1000HP. It focuses on military and aerospace propulsion and power generation, with plans to serve industrial, marine, UAV, urban mobility, and automotive markets.</parameter> <parameter name="hq_city">Bloomfield
Who founded Liquid Piston?: Liquid Piston was founded by Alexander Shkolnik, Nikolay Shkolnik.
Who are Liquid Piston's investors?: Liquid Piston's investors include Adams Capital Management, Colle Capital Partners.
How much funding has Liquid Piston raised?: Liquid Piston has disclosed $4.2M raised across 11 of its 12 known rounds.
Where is Liquid Piston headquartered?: Liquid Piston is headquartered in Bloomfield, US.