Main Engineering LLC

Private

Won a federal SBIR/STTR research award from NSF and other federal agencies.

National Science Foundation

SAM UEI: GSX3L6CQDVR4

Founded: —Source: [GOV]
Headquarters: SILVER SPRING, MarylandSource: [GOV]
Headcount: 2Source: [GOV]
Stage: Seed

$0[GOV]Total raised

Undisclosed[GOV]Last valuation

Overview

Main Engineering LLC has been awarded 1 US Small Business Innovation Research (SBIR/STTR) contract totalling $305,000 in 2025. These are non-dilutive federal research grants, not equity financing. The company is based in SILVER SPRING, Maryland.

Funding rounds

1 rounds

SBIR Phase I award (NSF)GrantMar 2025Source: [GOV]
$305K
—post-money

Investors

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People

Leadership

Erik DonaldPrincipal investigatorSince 2025[GOV]

Acquisitions

Main Engineering LLC has no recorded acquisitions.

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Exits

Still private — no exit on record.

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Diversity investments

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