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Maine startup funding

New funding rounds by startups based in Maine, from SEC Form D filings.

Updated Nov 10, 2026·Totals cover Form D filings Nov 13, 2025 to Nov 13, 2026

28 Maine startups filed a Form D in the last 12 months. Together they reported $41.4M sold in 27 new rounds. The median round was $1.0M.

Startups
28
filed in 12 months
Reported new funding
$41.4M
27 rounds
Median round
$1.0M
new rounds
Top city
Portland
9 startups

Largest rounds

1
Defendify, Inc.
Enterprise SoftwarePortland · filed Oct 2026
$6.5M14 investors
2
HighByte, Inc.
Enterprise SoftwarePortland · filed Jul 2026
$4.7M8 investors
3
$4.4M20 investors
4
MedRhythms, Inc.
HealthcarePortland · filed Mar 2026
$3.2M31 investors
5
$3.0M1 investors
6
North Spore Holdings, Inc.
Not classified yetPortland · filed Nov 2025
$2.6M12 investors
7
Bsahvc, Inc.
HealthcareKennebunk · filed Sep 2026
$2.5M1 investors
8
Bsahvc, Inc.
HealthcareKennebunk · filed Dec 2025
$2.2M10 investors
9
Western CAM Inc.
Energy & ClimateSouth Portland · filed May 2026
$2.2M3 investors
10
Shellfish Solutions Inc.
Not classified yetCastine · filed Feb 2026
$1.3M11 investors

Latest filings

Cities

Maine companies 72

72 companies
CompanyIndustryCityLatest filingLatest raise
Not classified yetBrunswickJun 10, 2024$1.0M
Industrial & RoboticsSouth BristolJun 6, 2024—
Consumer & RetailPortlandMay 29, 2024$450K
Not classified yetDurhamMay 28, 2024$250K
Not classified yetRocklandFeb 9, 2024$120K
Not classified yetWaldoboroJan 4, 2024$1.6M
Not classified yetPortlandNov 30, 2023$3.0M
Consumer & RetailPortlandNov 20, 2023$250K
Not classified yetBrunswickAug 30, 2023$11.1M
Not classified yetBangorAug 11, 2023$2.8M
Not classified yetOronoAug 4, 2023$1.8M
Industrial & RoboticsPortlandAug 1, 2023$5.1M
Not classified yetEliotJun 20, 2023$1.0M
Not classified yetSouth PortlandJun 20, 2023$50K
Not classified yetSouth PortlandJun 20, 2023$1.3M
Industrial & RoboticsPortlandMay 1, 2023$2.3M
FinTech & Financial ServicesPortlandMar 31, 2023$3.5M
Not classified yetPortlandMar 28, 2023$6.9M
Industrial & RoboticsPresque IsleMar 16, 2023$31K
Energy & ClimateSouth PortlandMar 3, 2023—
Industrial & RoboticsPortlandFeb 10, 2023$1.2M
Industrial & RoboticsBrewerFeb 8, 2023$5.9M
How this page is built

Startups are the private companies counted as startups (see our startup funding data), placed by the address on their latest Form D. Registered-agent and virtual-office addresses (common in Delaware and Wyoming) are not counted as a location. Public companies, foreign issuers and business-combination filings are excluded.