Funded Startups in Boston
Boston's most recent 50 funded rounds span July through November 2025, with November alone accounting for 18 deals — more than any other month in this set.
Boston's most recent 50 funded rounds span July through November 2025, with November alone accounting for 18 deals — more than any other month in this set. Two sectors dominate: artificial intelligence, represented by Beacon Biosignals ($86M Series B), Code Metal ($37M Series A), and Realm.Security ($15M Series A); and biotechnology and life sciences, spanning AllRock Bio ($50M Series A), Ensoma ($53M), Dash Bio, and Compass Therapeutics ($120M).
The largest disclosed round belongs to TeraDAR, an automotive hardware company that raised $150M at Series B in November 2025. Series A is the most represented labeled stage with 13 rounds across this set. Twelve rounds carry undisclosed amounts, including Imbria Pharmaceuticals (Series B), Dewpoint Therapeutics (Series D), and Indico Data. Deal sizes range from Sigmantic AI's $500K pre-seed to TeraDAR's nine-figure raise, covering the full active stage spectrum present in the market.
Most recent rounds
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Frequently asked
What are the largest disclosed rounds among recent Boston companies?
TeraDAR leads at $150M (Series B, November 2025), followed by Compass Therapeutics at $120M (August 2025) and Beacon Biosignals at $86M (Series B, November 2025). AllRock Bio, Blue Water Autonomy, and Ensoma each raised between $50M and $53M in the August–September 2025 window.
Which sectors are generating the most funding activity in Boston right now?
AI and biotech together account for the clear majority of the 50 rounds shown. AI appears as a primary or secondary sector for at least 17 companies, including Code Metal, Eyebot, Cascala Health, and OutcomesAI; biotech and life sciences covers another dozen-plus, from Bambusa Therapeutics and Dash Bio to Superluminal Medicines and Predicta Biosciences.
What funding stages are most common among recently funded Boston startups?
Series A leads with 13 rounds, including AI Proteins ($42M), Blue Water Autonomy ($50M), OneLayer ($28M), and apiphani ($25M). A further 12 rounds are labeled "Venture - Series Unknown" and 7 as "Series Unknown," meaning roughly 38% of this set carries an unspecified or undisclosed stage.
How many of the recent Boston rounds have undisclosed dollar amounts?
Twelve of the 50 rounds do not disclose a dollar figure, including Imbria Pharmaceuticals (Series B), Dewpoint Therapeutics (Series D), Indico Data, Somite, and Cleo Robotics. Undisclosed amounts appear across all stages, from seed to late-stage venture.
Is there active cybersecurity and AI-security funding in Boston in this period?
Yes — Realm.Security raised $15M Series A in October 2025 focusing on AI-driven cybersecurity; apiphani closed a $25M Series A in September 2025 spanning IT, AI, cloud, and cybersecurity; SOC Prime and SimSpace each closed rounds in October–November 2025. Proof also raised $16M combining B2B software, cyber security, and legal tech.
Has deal flow been consistent month to month, or are there clear spikes?
November 2025 is the most active month in this set with 18 rounds, including nine-figure deals and multiple Series A closings. September 2025 is second with 12 rounds; October and August each contribute 7, and July accounts for 6 — suggesting an acceleration into Q4 2025.
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