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Companies

Lilac Solutions

Ion-exchange beads that extract lithium from brine

Raised to date

$34.4M

of $46.7M offered across 1 Form D filing

Still open
$12.3M
Investors
21
Last filed
Jun 29, 2026

About

Lilac Solutions is an Oakland, California company founded in 2016 that develops ion-exchange technology for direct lithium extraction (DLE) from brines. Its proprietary ion-exchange beads pull lithium out of high-grade, low-grade, and chemically complex brines in a closed loop, without the evaporation ponds conventional lithium production relies on, producing battery-grade lithium at roughly 87% recovery and 5-20 cubic meters of freshwater per tonne LCE. The company has completed pilot operations on Utah's Great Salt Lake and with Neptune Energy in Germany, unveiled a fifth-generation ion-exchange system, and built a US ion-exchange media manufacturing facility in Nevada. It raised a $150 million round in 2021 to scale the technology.

Ion-exchange beads extract lithium directly from brine in a closed loop, eliminating evaporation ponds — which cuts land disturbance, freshwater loss, and project timelines, and makes low-grade or complex brines economic that conventional processing strands.

Funding

  • EquityFiled Jun 29, 2026Form D
    $34.4M/ $46.7M

Product

Lilac ion exchange direct lithium extraction system

Critical minerals process technology

A modular ion-exchange platform that selectively captures lithium from brine and releases it as a concentrated stream for conversion into battery-grade lithium chemicals, deployed at pilot, demonstration, and commercial scale on brine resources.

  • Proprietary ion-exchange beads that selectively capture lithium from brine
  • Closed-loop process requiring no evaporation ponds
  • Approximately 87% lithium recovery

Built for

Lithium producers and mining companies, plus oil and gas and geothermal operators sitting on lithium-bearing brines, and nations pursuing domestic lithium production

People on file