LiquidPiston crowdfunding raise on StartEngine (closed)

Closed — raised US$3,928,885 from 1,304 investors (393% of target)

The Multi-Fuel Engine Built for a Multi-Billion-Dollar Market

  • Raised on StartEngine
  • Equity
  • Aerospace & Defense · United States

Funding history

111 readings

LiquidPiston: amount raised over time The amount raised rose from US$3,456,092 on 11 October 2026 to US$3,928,885 on 16 October 2026, over 111 readings. Target US$999,986. Maximum US$4,999,982.
LiquidPiston: amount raised per day, 14 days to 16 Oct 12 Oct US$37,676; 13 Oct US$57,107; 14 Oct US$101,528; 15 Oct US$249,881; 24 hours to 16 Oct US$254,783. 12 Oct: US$37,67613 Oct: US$57,10714 Oct: US$101,52815 Oct: US$249,88124 hours to 16 Oct: US$254,783
Raised US$472,793 while Raise Sonar tracked it, from 11 Oct to 16 Oct.

About LiquidPiston

Summarised by Raise Sonar from LiquidPiston’s StartEngine pitch

LiquidPiston is developing a patented rotary engine for defense, aerospace and industrial markets. The page describes the company as disrupting the 100+ year internal combustion engine industry. It cites millions in government contracts and 110+ patents protecting its platform. The offering is a Reg CF raise made through StartEngine Primary, LLC and is now closed.

Read the full pitch on StartEngine (opens in a new tab)

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The raise in figures

Raised

US$3,928,885

of US$4,999,982 maximum

78%

of maximum

US$0Target US$999,986 metUS$4,999,982

Investors
1,304
Minimum investment
US$1,013
Pre-money valuation
US$297.4M

At target: US$298.4M post-money · 0.34% equity offered

Last updated

↳ StartEngine · last checked 18 d ago

About this raise

LiquidPiston ran an equity crowdfunding raise on StartEngine, which has now closed. The company is based in the United States, and StartEngine lists it under Aerospace & Defense. Under Regulation Crowdfunding (Reg CF), investors are offered shares.

The round values LiquidPiston at $297M pre-money. Its target is $999,986, and its maximum $4.99M. The round closed with $3.92M from 1,304 investors, 78% of its maximum. The minimum investment was $1,013.

It ran from to , a run of 185 days. Investors from outside the United States could invest too, subject to StartEngine’s checks.

Reg CF lets a US company raise from the general public, not only accredited investors, through an SEC-registered funding portal or broker-dealer. Buying shares makes investors part-owners of LiquidPiston.

Closed

Closed on Fri 16 Oct

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Questions about LiquidPiston’s raise

When did LiquidPiston’s crowdfunding raise close?

LiquidPiston’s raise on StartEngine closed on 16 October 2026.

What was the minimum investment in LiquidPiston?

The minimum investment in LiquidPiston’s raise on StartEngine was $1,013.

What regulation was LiquidPiston’s raise under?

LiquidPiston’s raise was under Regulation Crowdfunding (Reg CF). Reg CF is the SEC’s exemption that lets a US company raise from the general public, not only accredited investors, through an SEC-registered funding portal or broker-dealer.

How much did LiquidPiston raise?

LiquidPiston raised $3.92M from 1,304 investors on StartEngine, 78% of its $4.99M maximum.

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