Mafix raises $5.4M pre-seed led by Azolla Ventures to commercialize carbon-negative silicon fertilizers

FinSMEs / FinSMEs

Mafix raises $5.4M pre-seed led by Azolla Ventures to commercialize carbon-negative silicon fertilizers

Mafix, a Seattle-based maker of carbon-negative silicon fertilizers and mineral products, raised $5.4M in a pre-seed round led by Azolla Ventures on August 24, 2026. The company will use proceeds to demonstrate production of 1,000 tons of fertilizer, scale its mineral conversion process across feedstocks, and develop next-generation products.

MMafix

More: eagletribune.com, William Reed Ltd

eagletribune.com / Mafix - (GLOBE NEWSWIRE): Mafix raises $5.4M pre-seed led by Azolla Ventures to commercialize carbon‑negative silicon fertilizers and scale a 1,000‑ton demo
William Reed Ltd / Ryan Daily: Mafix raises $5.4M pre-seed to commercialize silicon fertilizer that boosts soil health and removes CO2

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