18 Series A investors in Massachusetts, including 17 in Boston
We list 18 Series A investors in Massachusetts as of November 2026: each has an SEC filing on file, and the list was last checked on 6 Nov 2026. The cities with the most head offices on this list are Boston (9), Cambridge (5) and Charlestown (1). 17 of the 18 are in the Boston metro area, so this page is also our list of Series A investors in Boston.
Top 5 Series A investors in Massachusetts, ranked by recent fund activity
Among firms with a published profile and a dated fund or deal in the last 24 months. The rule: Activity score out of 100: recency of the latest fund filing or dated deal (40: full marks within 3 months, then stepping down at 6, 12 and 24 months), stage focus (15: all of it when Series A is the only stage the firm states, split evenly when it states more), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (20) and completeness of the public record (10). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns. The same rule orders the whole list; it is repeated in the method box.
Cybernetix Ventures
Type: VC firm · HQ: Boston, MA · Stages: Pre-seed, Seed, Series A · Focus: Robotics, Industrial Tech, Logistics, AI · Latest activity: New fund, Aug 2026 · Fund size on file: $100M (SEC Form D, 2025)
Latest fund filing dated Aug 2026; $100M fund on file (SEC Form D, 2025); backs pre-seed, seed, Series A; names the US as where it invests; 2 named decision-makers on file.
Link Ventures
Type: VC firm · HQ: Cambridge, MA · Stages: Pre-seed, Seed, Series A · Focus: AI, Robotics, Industrial Tech, Space · Latest activity: New deal, Jun 2026 · Fund size on file: $200M (SEC Form D, 2021)
Dated new deal in Jun 2026; $200M fund on file (SEC Form D, 2021); backs pre-seed, seed, Series A; names the US as where it invests; 8 named decision-makers on file.
Winter Street Ventures
Type: VC firm · HQ: Boston, MA · Stages: Seed, Series A · Focus: Healthtech, AI, Medtech · Latest activity: New fund, Jun 2026 · Fund size on file: $75M (SEC Form D, 2026)
Latest fund filing dated Jun 2026; $75M fund on file (SEC Form D, 2026); backs seed, Series A; names the US as where it invests; 2 named decision-makers on file.
Clean Energy Ventures
Type: VC firm · HQ: Boston, MA · Stages: Seed, Series A · Focus: Energy, Climate Tech, Fintech, Deep Tech · Latest activity: New deal, May 2026 · Fund size on file: $306M (SEC Form D, 2022)
Dated new deal in May 2026; $306M fund on file (SEC Form D, 2022); backs seed, Series A; 8 named decision-makers on file.
CHVC
Type: VC firm · HQ: Charlestown, MA · Stages: Seed, Series A, Series B, Growth · Focus: Healthtech, Food and Beverage, Consumer, CPG · Latest activity: New deal, Aug 2025 · Fund size on file: $50M (SEC Form D, 2025)
Dated new deal in Aug 2025; $50M fund on file (SEC Form D, 2025); backs seed, Series A, Series B; names the US as where it invests; 2 named decision-makers on file.
First 10 of 18 Series A investors in Massachusetts
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Cybernetix Ventures | VC firm | Boston, MA | Pre-seed, Seed, Series A | Robotics, Industrial Tech, Logistics, AI | New fund, Aug 2026 | $100M (SEC Form D, 2025) | 4 Nov 2026 | 2 names · Unlock |
| Link Ventures | VC firm | Cambridge, MA | Pre-seed, Seed, Series A | AI, Robotics, Industrial Tech, Space | New deal, Jun 2026 | $200M (SEC Form D, 2021) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Winter Street Ventures | VC firm | Boston, MA | Seed, Series A | Healthtech, AI, Medtech | New fund, Jun 2026 | $75M (SEC Form D, 2026) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Clean Energy Ventures | VC firm | Boston, MA | Seed, Series A | Energy, Climate Tech, Fintech, Deep Tech | New deal, May 2026 | $306M (SEC Form D, 2022) | 5 Nov 2026 | 8 names, firm email · Unlock |
| CHVC | VC firm | Charlestown, MA | Seed, Series A, Series B, Growth | Healthtech, Food and Beverage, Consumer, CPG | New deal, Aug 2025 | $50M (SEC Form D, 2025) | 5 Nov 2026 | 2 names, firm email · Unlock |
| E14 Fund: MIT Affiliated VC | VC firm | Wellesley, MA | Pre-seed, Seed, Series A | AI, Robotics, Deep Tech, Food and Beverage | New fund, Dec 2025 | $118M (SEC Form D, 2023) | 4 Nov 2026 | 8 names · Unlock |
| Stage 2 Capital | VC firm | Lincoln, MA | Pre-seed, Seed, Series A | AI, Fintech, B2B, SaaS | New fund, Jul 2024 | $134M (SEC Form D, 2022) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Venture Guides | VC firm | Cambridge, MA | Seed, Series A | Cybersecurity, AI, B2B, SaaS | New fund, Apr 2025 | $262M (SEC Form D, 2025) | 5 Nov 2026 | 8 names · Unlock |
| RA Capital | VC firm | Boston, MA | Pre-seed, Seed, Series A, Series B, Growth, Any stage | Biotech, Healthtech, Climate Tech, Energy | New deal, Aug 2025 | $881M (SEC Form D, 2021) | 4 Nov 2026 | 8 names · Unlock |
| Awareness Venture | VC firm | Westport, MA | Seed, Series A, Series B | Healthtech, AI, Biotech, Medtech | New fund, Nov 2024 | $6M (SEC Form D, 2023) | 5 Nov 2026 | 3 names · Unlock |
You are seeing 10 of 18. The full list adds 8 more investors and 108 named decision-makers.
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17 Series A investors in Boston
7 of the 17 have a fund filing or a dated deal in the last 12 months; the median fund size on file is $125M (SEC Form D, 15 firms); the most recent fund filings are from Cybernetix Ventures (Aug 2026), Winter Street Ventures (Jun 2026) and E14 Fund: MIT Affiliated VC (Dec 2025); of the 17 with a stage on file, seed (17), Series A (17) and pre-seed (7); the count covers the metro area, by city: Boston (9), Cambridge (5) and Charlestown (1); the paid file holds 105 named decision-makers for them.
The first 5 in list order: Cybernetix Ventures, Link Ventures, Winter Street Ventures, Clean Energy Ventures and CHVC. They are ranked with the rest of the list, by the same rule.
How these 18 break down
By city
| City | On this list | Share |
|---|---|---|
| Boston | 9 | 50% |
| Cambridge | 5 | 28% |
By sector
| Sector | On this list | Share |
|---|---|---|
| AI | 13 | 72% |
| SaaS | 10 | 56% |
| Healthtech | 9 | 50% |
| Medtech | 7 | 39% |
| Fintech | 6 | 33% |
| Industrial Tech | 5 | 28% |
| Biotech | 5 | 28% |
| Robotics | 3 | 17% |
| Hardware | 3 | 17% |
| Energy | 3 | 17% |
| Climate Tech | 3 | 17% |
| Deep Tech | 3 | 17% |
Sector is our research. A firm can carry more than one sector.
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 17 | 94% |
| Corporate VC | 1 | 6% |
Method and limits
- Source
- All 18 rows carry an SEC filing (Form D or Form ADV). All 18 have a website we checked. Filing date and fund size are SEC data where a filing exists. Stage, sector and check size are our research.
- Inclusion rule
- Organizations that back startups. Individuals, buyout funds and firms we found to be inactive are left out. Stage: the firm states that it invests at Series A. Place: head office in Massachusetts.
- Order
- Firms with a published profile come first. Activity score out of 100: recency of the latest fund filing or dated deal (40: full marks within 3 months, then stepping down at 6, 12 and 24 months), stage focus (15: all of it when Series A is the only stage the firm states, split evenly when it states more), stated focus on the US (15: full marks when the firm names the US as where it invests, half when it says global), size of the fund on file on a log scale (20) and completeness of the public record (10). Stage and regional focus are our research, not an SEC figure. It is a measure of activity and fit, not of quality or returns.
- Last refreshed
- November 2026. Rows on this list were checked between 4 Nov 2026 and 6 Nov 2026.
- Fill rates
- Of 18 rows: stage 18, sector 18, fund size 18, website 18. In the paid file: named decision-makers on 18 rows, firm email on 7, LinkedIn page on 11, check size on 1.
- Corrections
- Email [email protected] or use the update form. We act within 5 working days.
Questions
How many Series A investors in Massachusetts are there?
We list 18 as of November 2026. 7 of the 18 have a fund filing or a dated deal in the last 12 months. The cities with the most are Boston (9), Cambridge (5) and Charlestown (1).
Which Series A investors in Massachusetts raised a new fund in the last 12 months?
3 of the 18 have a fund filing dated in the last 12 months. The most recent on this list are Cybernetix Ventures (Aug 2026), Winter Street Ventures (Jun 2026) and E14 Fund: MIT Affiliated VC (Dec 2025).
What is the typical fund size of Series A investors in Massachusetts?
The median fund size on file for this list is $121M, across the 16 firms with a size on an SEC Form D. The fund on file is each firm's main fund, which is not always its newest. The other 2 do not disclose a size there.
How do I contact Series A investors in Massachusetts?
The paid file holds 108 named decision-makers across 18 of these 18 and a firm email for 7. We publish the address a firm lists itself, never a personal email. Each free row links to a profile with the firm's website.
Where does the data on Series A investors in Massachusetts come from?
All 18 rows have an SEC filing on file (Form D or Form ADV). Filing date and fund size come from the filing. Stage, sector and check size are our research. Rows on this list were last checked on 6 Nov 2026 at the latest. The whole file is re-verified twice a year.
Related lists
Series A investors in California (136)Seed investors in Massachusetts (60)Series A investors in New York (49)Pre-seed investors in Massachusetts (48)Series A investors in Florida (21)Series A investors in Illinois (20)Growth-stage investors in Massachusetts (18)Series A investors in Pennsylvania (16)Series A investors in Texas (15)
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