20 deep tech investors in Massachusetts, including 18 in Boston
We list 20 deep tech investors in Massachusetts as of November 2026: 19 have an SEC filing on file and 1 was checked on the firm's own website or an official register, and the list was last checked on 5 Nov 2026. The cities with the most head offices on this list are Boston (10), Cambridge (5) and Framingham (1). 18 of the 20 are in the Boston metro area, so this page is also our list of deep tech investors in Boston.
Top 5 deep tech 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 (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), 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 (15) and completeness of the public record (10). Regional focus is 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.
Inflection
Type: VC firm · HQ: Framingham, MA · Stages: Pre-seed, Seed · Focus: Deep Tech, AI, Space, Defense Tech · Latest activity: New fund, Sep 2026 · Fund size on file: $50M (SEC Form D, 2026)
Latest fund filing dated Sep 2026; $50M fund on file (SEC Form D, 2026); 27% of its observed portfolio is deep tech; names the US as where it invests; 3 named decision-makers on file.
Safar Partners
Type: VC firm · HQ: Cambridge, MA · Stages: Seed · Focus: Deep Tech, Healthtech, Industrial Tech, Biotech · Latest activity: New deal, Aug 2026 · Fund size on file: $300M (SEC Form D, 2023)
Dated new deal in Aug 2026; $300M fund on file (SEC Form D, 2023); 17% of its observed portfolio is deep tech; names the US as where it invests; 3 named decision-makers on file.
Timescale Ventures
Type: VC firm · HQ: Marblehead, MA · Stages: Pre-seed, Seed · Focus: Deep Tech, Energy, Industrial Tech, AI · Latest activity: New fund, Sep 2026 · Fund size on file: $50M (SEC Form D, 2025)
Latest fund filing dated Sep 2026; $50M fund on file (SEC Form D, 2025); 39% of its observed portfolio is deep tech; 2 named decision-makers on file.
Parallel Venture Capital
Type: VC firm · HQ: Boston, MA · Stages: Pre-seed, Seed · Focus: Deep Tech, Defense Tech, AI, Cybersecurity · Latest activity: New fund, Mar 2026 · Fund size on file: $25M (SEC Form D, 2025)
Latest fund filing dated Mar 2026; $25M fund on file (SEC Form D, 2025); 25% of its observed portfolio is deep tech; names the US as where it invests; 4 named decision-makers on file.
Glasswing Ventures
Type: VC firm · HQ: Boston, MA · Stages: Pre-seed · Focus: Deep Tech, AI, Future of Work, Cybersecurity · Latest activity: New deal, Jun 2026 · Fund size on file: $203M (SEC Form D, 2024)
Dated new deal in Jun 2026; $203M fund on file (SEC Form D, 2024); states deep tech as a focus; 8 named decision-makers on file.
First 10 of 20 deep tech investors in Massachusetts
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Inflection | VC firm | Framingham, MA | Pre-seed, Seed | Deep Tech, AI, Space, Defense Tech | New fund, Sep 2026 | $50M (SEC Form D, 2026) | 4 Nov 2026 | 3 names, firm email · Unlock |
| Safar Partners | VC firm | Cambridge, MA | Seed | Deep Tech, Healthtech, Industrial Tech, Biotech | New deal, Aug 2026 | $300M (SEC Form D, 2023) | 4 Nov 2026 | 3 names, firm email · Unlock |
| Timescale Ventures | VC firm | Marblehead, MA | Pre-seed, Seed | Deep Tech, Energy, Industrial Tech, AI | New fund, Sep 2026 | $50M (SEC Form D, 2025) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Parallel Venture Capital | VC firm | Boston, MA | Pre-seed, Seed | Deep Tech, Defense Tech, AI, Cybersecurity | New fund, Mar 2026 | $25M (SEC Form D, 2025) | 4 Nov 2026 | 4 names · Unlock |
| Glasswing Ventures | VC firm | Boston, MA | Pre-seed | Deep Tech, AI, Future of Work, Cybersecurity | New deal, Jun 2026 | $203M (SEC Form D, 2024) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Engine Ventures | VC firm | Cambridge, MA | Deep Tech, Energy, AI, Climate Tech | New fund, May 2026 | $500M (SEC Form D, 2026) | 4 Nov 2026 | 8 names, firm email · Unlock | |
| Spark Capital | VC firm | Boston, MA | Any stage | Deep Tech, Fintech, AI, Industrial Tech | New fund, Aug 2026 | $2.3B (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| One Way Ventures | VC firm | Boston, MA | Pre-seed, Seed, Growth | Deep Tech, AI, SaaS, Fintech | New fund, Jan 2026 | $60M (SEC Form D, 2025) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Clean Energy Ventures | VC firm | Boston, MA | Seed, Series A | Deep Tech, Energy, Climate Tech, Fintech | New deal, May 2026 | $306M (SEC Form D, 2022) | 5 Nov 2026 | 8 names, firm email · Unlock |
| F-Prime Capital | VC firm | Cambridge, MA | Any stage | Deep Tech, Healthtech, Biotech, Crypto and Web3 | $5.3B (own site) | 4 Nov 2026 | 8 names · Unlock |
You are seeing 10 of 20. The full list adds 10 more investors and 119 named decision-makers.
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18 deep tech investors in Boston
10 of the 18 have a fund filing or a dated deal in the last 12 months; the median fund size on file is $189M (SEC Form D, 12 firms); the most recent fund filings are from Inflection (Sep 2026), Spark Capital (Aug 2026) and Engine Ventures (May 2026); of the 16 with a stage on file, seed (12), pre-seed (11) and Series A (3); the count covers the metro area, by city: Boston (10), Cambridge (5) and Framingham (1); the paid file holds 113 named decision-makers for them.
The first 5 in list order: Inflection, Safar Partners, Parallel Venture Capital, Glasswing Ventures and Engine Ventures. They are ranked with the rest of the list, by the same rule.
How these 20 break down
By city
| City | On this list | Share |
|---|---|---|
| Boston | 10 | 50% |
| Cambridge | 5 | 25% |
By stage
| Stage | On this list | Share |
|---|---|---|
| Pre-Seed | 12 | 60% |
| Seed | 13 | 65% |
| Series A | 3 | 15% |
Stage is our research. A firm can back more than one stage.
Method and limits
- Source
- 19 of the 20 rows carry an SEC filing (Form D or Form ADV). All 20 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. Sector: the firm states deep tech as a focus on its own site, or we observed it in the firm's portfolio. 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 (35: full marks within 3 months, then stepping down at 6, 12 and 24 months), share of the observed portfolio in this sector (25; half of that when the sector is stated only), 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 (15) and completeness of the public record (10). Regional focus is 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 5 Nov 2026.
- Fill rates
- Of 20 rows: stage 17, sector 20, fund size 19, website 20. In the paid file: named decision-makers on 20 rows, firm email on 12, LinkedIn page on 10, check size on 1.
- Corrections
- Email hello@theinvestordatabase.com or use the update form. We act within 5 working days.
Questions
How many deep tech investors in Massachusetts are there?
We list 20 as of November 2026. 12 of the 20 have a fund filing or a dated deal in the last 12 months. The cities with the most are Boston (10), Cambridge (5) and Framingham (1).
Which deep tech investors in Massachusetts raised a new fund in the last 12 months?
9 of the 20 have a fund filing dated in the last 12 months. The most recent on this list are Timescale Ventures (Sep 2026), Inflection (Sep 2026) and Spark Capital (Aug 2026).
What is the typical fund size of deep tech investors in Massachusetts?
The median fund size on file for this list is $146M, across the 14 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 6 do not disclose a size there.
How do I contact deep tech investors in Massachusetts?
The paid file holds 119 named decision-makers across 20 of these 20 and a firm email for 12. 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 deep tech investors in Massachusetts come from?
19 of the 20 rows have an SEC filing on file (Form D or Form ADV) and 1 was checked on the firm's own website or an official register. 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 5 Nov 2026 at the latest. The whole file is re-verified twice a year.
Broader lists
Deep tech venture capital firms in the US (322)Venture capital firms in Massachusetts (185)
Related lists
Deep tech investors in California (138)AI investors in Massachusetts (61)Healthtech investors in Massachusetts (58)SaaS investors in Massachusetts (55)Deep tech investors in New York (42)Medtech investors in Massachusetts (37)Biotech investors in Massachusetts (37)Fintech investors in Massachusetts (26)Industrial tech investors in Massachusetts (23)Deep tech investors in Florida (19)Climate tech investors in Massachusetts (19)Hardware investors in Massachusetts (16)Deep tech investors in Texas (15)Energy investors in Massachusetts (15)
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