Investor Lists

Seed investors based in Boston

Updated 7 November 2026

Firms with an address in Boston that we have watched take part in a seed round in the last two years.

See all 39 →The top 25
39investors on the listNo change this week
528cheques in 12 months-6% against the market
$10Mmedian round they joined+25% against the market median
87%wrote a cheque in 12 months
69%have led a round

The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

  1. 1MassChallengeDeploying nowAccelerator · United States984$1.8Mmedian roundSept 2026last seen
  2. 2Battery VenturesDeploying nowVC firm · United States658$32Mmedian roundNov 2026last seen
  3. 3Polaris PartnersDeploying nowVC firm · United States490$36Mmedian roundOct 2026last seen
  4. 4RA Capital ManagementDeploying nowPrivate equity · United States395$93Mmedian roundNov 2026last seen
  5. 5Wellington ManagementDeploying nowVC firm · United States297$130Mmedian roundOct 2026last seen
  6. 6Flare CapitalDeploying nowVC firm · United States93$12Mmedian roundOct 2026last seen
  7. 7MassMutual VenturesDeploying nowVC firm · United States84$14Mmedian roundOct 2026last seen
  8. 8Pillar VCDeploying nowVC firm · United States83$8.2Mmedian roundSept 2026last seen
  9. 9Castle Island VenturesDeploying nowVC firm · United States78$7Mmedian roundOct 2026last seen
  10. 10The E14 FundDeploying nowVC firm · United States72$8Mmedian roundOct 2026last seen
  11. 11One Way VenturesDeploying nowVC firm · United States71$8Mmedian roundNov 2026last seen
  12. 12Underscore VCDeploying nowVC firm · United States65$7Mmedian roundSept 2026last seen
  13. 13HubSpot VenturesDeploying nowCorporate VC · United States64$25Mmedian roundNov 2026last seen
  14. 14Four Cities CapitalDeploying nowVC firm · United States62$5.3Mmedian roundOct 2026last seen
  15. 15ElephantDeploying nowVC firm · United States54$16Mmedian roundJul 2026last seen
  16. 16Optum VenturesDeploying nowVC firm · United States53$25Mmedian roundOct 2026last seen
  17. 17Glasswing VenturesDeploying nowVC firm · United States50$5.2Mmedian roundOct 2026last seen
  18. 18Raptor GroupDeploying nowPrivate equity · United States50$15Mmedian roundSept 2026last seen
  19. 19MCJDeploying nowVC firm · United States47$9Mmedian roundSept 2026last seen
  20. 20Asymmetric Capital PartnersDeploying nowVC firm · United States44$8.3Mmedian roundSept 2026last seen
  21. 21Clean Energy VenturesDeploying nowVC firm · United States42$10Mmedian roundSept 2026last seen
  22. 22Suffolk TechnologiesDeploying nowVC firm · United States39$5.3Mmedian roundJun 2026last seen
  23. 23Will VenturesDeploying nowVC firm · United States39$7Mmedian roundSept 2026last seen
  24. 24LRVHealthDeploying nowVC firm · United States36$19Mmedian roundSept 2026last seen
  25. 25PharmStarsDeploying nowAccelerator · United States34$1.6Mmedian roundJun 2026last seen
14 more on this list

All 39 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000.

See the whole list →

Quick answers about seed investors based in Boston

Who are the most active seed investors based in Boston?

By cheques observed, the most active are MassChallenge, Battery Ventures, Polaris Partners, RA Capital Management and Wellington Management.

How many seed investors based in Boston are there?

39 are on record. 87% made an investment in the last 12 months and 69% have led a round.

Which stages do seed investors based in Boston back?

Of the rounds with a named stage in the last 12 months, mostly Seed (23%) and Series A (22%).

How big are the rounds seed investors based in Boston join?

The typical (median) round among the leading investors here is $9M.

Which sectors do seed investors based in Boston back most?

In the last 12 months, mostly AI, Biotech and Healthcare.

Which seed investors based in Boston lead the most rounds?

Battery Ventures (29 led), RA Capital Management (15 led) and Wellington Management (15 led).

What have seed investors based in Boston invested in recently?

Recent rounds include Alethio Therapeutics (Series A, Nov 2026, with RA Capital Management), Shackleton AI (Seed, Nov 2026, with Battery Ventures) and Lazarus AI (Nov 2026, with One Way Ventures).

How is this list of seed investors based in Boston ranked?

By cheques observed, from the rounds and filings we watched, and never by anything anyone paid for. It is rebuilt every night.

Built from the rounds we watched, refreshed every night. How we count · Report a correction