---
title: "20 Deep Tech Investors in Massachusetts (Nov 2026): 18 in Boston"
last_updated: "2026-11-05"
rows: "20"
free_rows: "10"
source: "SEC Form D filings and our own research"
canonical: "https://theinvestordatabase.com/lists/deep-tech-investors-in-massachusetts/"
---

# 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.

- 20 investors
- 12 with a fund filing or dated deal in the last 12 months
- $146M median fund size on file (SEC Form D, 14 firms)
- 119 named decision-makers on file

## First 10 of 20 deep tech investors in Massachusetts

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| Inflection | VC firm | Framingham, MA | Pre-seed, Seed | Deep Tech, AI, Space, Defense Tech | New fund, Sep 2026 | $50M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/inflection/ |
| Safar Partners | VC firm | Cambridge, MA | Seed | Deep Tech, Healthtech, Industrial Tech, Biotech | New deal, Aug 2026 | $300M (SEC Form D, 2023) | 2026-11-04 | https://theinvestordatabase.com/investors/safar-partners/ |
| Timescale Ventures | VC firm | Marblehead, MA | Pre-seed, Seed | Deep Tech, Energy, Industrial Tech, AI | New fund, Sep 2026 | $50M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/timescale-ventures/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/parallel-venture-capital/ |
| Glasswing Ventures | VC firm | Boston, MA | Pre-seed | Deep Tech, AI, Future of Work, Cybersecurity | New deal, Jun 2026 | $203M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/glasswing-ventures/ |
| Engine Ventures | VC firm | Cambridge, MA |  | Deep Tech, Energy, AI, Climate Tech | New fund, May 2026 | $500M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/engine-ventures/ |
| Spark Capital | VC firm | Boston, MA | Any stage | Deep Tech, Fintech, AI, Industrial Tech | New fund, Aug 2026 | $2.3B (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/spark-capital/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/one-way-ventures/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/clean-energy-ventures/ |
| F-Prime Capital | VC firm | Cambridge, MA | Any stage | Deep Tech, Healthtech, Biotech, Crypto and Web3 |  | $5.3B (own site) | 2026-11-04 | https://theinvestordatabase.com/investors/f-prime-capital/ |

You are seeing 10 of 20. The full list adds 10 more investors and 119 named decision-makers.

Get all 20 investors and 119 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/deep-tech-investors-in-massachusetts
This page: https://theinvestordatabase.com/lists/deep-tech-investors-in-massachusetts/

## 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.

## 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: 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.
- 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.

## 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.