Seed Funded Sustainability Startups
Seed-stage sustainability funding in this snapshot is tightly concentrated in the $2M–$4M band, while one disclosed round stands well above it.
Seed-stage sustainability funding in this snapshot is tightly concentrated in the $2M–$4M band, while one disclosed round stands well above it. The largest disclosed amount is waste* at $8M (2023-01-25), compared with the next-largest disclosed rounds of $4M (Cardino 2024-06-11; Nex 2023-03-22; Sunmaxx PVT 2023-01-19) and $3M (Noovoleum 2025-02-11; Bend 2023-05-03). Several undisclosed rounds appear in parallel (Humble Sustainability, 2024-05-20; Sustable, 2023-12-13; Blueit, 2023-04-06; Trashin, 2021-10-31), but the disclosed entries show a clear skew toward mid-sized checks.
Geographically, the list clusters around Europe and English-speaking markets: London appears twice (Amazonica on 2025-07-01; Clim8 Invest on 2021-04-12), and Germany also shows up multiple times (Cardino 2024-06-11; Nex 2023-03-22; circolution’s city is Frankfurt, with 2023-02-01). Temporally, the most recent 19 rows span 2021-04-12 (Clim8 Invest) through 2025-07-01 (Amazonica), with a noticeable run of rounds from 2023-11-09 (Phantm) into 2024-06-11 (Cardino).
Most recent rounds
19 shownRelated listings
Frequently asked
What’s the largest disclosed seed round in this sustainability list, and is it a true outlier versus the rest?
wasted* closed on 2023-01-25 at $8M, which is higher than the next-largest disclosed amounts of $4M (Cardino 2024-06-11; Nex 2023-03-22; Sunmaxx PVT 2023-01-19) and $3M (Noovoleum 2025-02-11; Bend 2023-05-03).
Are there clear temporal clusters among the most recent seed rounds?
Yes. After Phantm (2023-11-09, $1M), several entries land in a steady sequence through mid-2024: Sustable is 2023-12-13 (undisclosed), MatchLog is 2024-04-25 ($2M), and Cardino is 2024-06-11 ($4M).
Which locations are over-represented, based on repeated cities in the dataset?
London appears twice: Amazonica in London on 2025-07-01 ($2M) and Clim8 Invest in London on 2021-04-12 ($8M). Germany also repeats with multiple distinct cities—Cardino (Berlin, 2024-06-11, $4M) and Nex (Berlin, 2023-03-22, $4M), plus circolution in Frankfurt (2023-02-01, $250K).
How often are amounts undisclosed, and does that affect concentration around $2M–$4M?
Four of the 19 rows are undisclosed (Humble Sustainability 2024-05-20; Sustable 2023-12-13; Blueit 2023-04-06; Trashin 2021-10-31). Among disclosed rounds, many sit in the $2M–$4M range (e.g., Amazonica $2M on 2025-07-01, Noovoleum $3M on 2025-02-11, Cardino $4M on 2024-06-11).
Are there any standout small disclosed rounds that sit far below the rest of the disclosed amounts?
Yes. The smallest disclosed amount is circolution at $250K (2023-02-01), far below other disclosed checks such as Carbonaix at $500K (2024-04-15) and B4Waste at $380K (2022-09-06).
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