165 Series B investors in the US
We list 165 Series B investors in the US as of November 2026: 162 have an SEC filing on file and 3 were checked on the firm's own website or an official register, and the list was last checked on 7 Nov 2026. The cities with the most head offices on this list are New York (25), San Francisco (18) and Menlo Park (10).
Top 10 Series B investors in the US, 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 B 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.
Alpha Partners
Type: VC firm · HQ: New York, NY · Stages: Series B, Growth · Focus: AI, Developer Tools, Healthtech, Cybersecurity · Latest activity: New fund, Oct 2026 · Fund size on file: $200M (SEC Form D, 2024)
Latest fund filing dated Oct 2026; $200M fund on file (SEC Form D, 2024); backs Series B, growth-stage; names the US as where it invests; 8 named decision-makers on file.
Energy Impact Partners
Type: VC firm · HQ: United States (London office) · Stages: Seed, Series A, Series B, Growth · Focus: Energy, Climate Tech, AI, Cybersecurity · Latest activity: Portfolio news, Nov 2026 · Fund size or assets: $4.5B (own site)
Portfolio news dated Nov 2026; $4.5B on file (own site); backs seed, Series A, Series B; names the US as where it invests; 8 named decision-makers on file.
Greycroft
Type: VC firm · HQ: New York, NY · Stages: Series A, Series B, Growth · Focus: AI, Industrial Tech, Defense Tech, Healthtech · Latest activity: New deal, Oct 2026 · Fund size on file: $600M (SEC Form D, 2022)
Dated new deal in Oct 2026; $600M fund on file (SEC Form D, 2022); backs Series A, Series B, growth-stage; names the US as where it invests; 5 named decision-makers on file.
Kleiner Perkins
Type: VC firm · HQ: Menlo Park, CA · Stages: Pre-seed, Seed, Series A, Series B, Growth · Focus: AI, Fintech, Proptech, Mobility · Latest activity: New fund, Aug 2026 · Fund size on file: $995M (SEC Form D, 2026)
Latest fund filing dated Aug 2026; $995M fund on file (SEC Form D, 2026); backs pre-seed, seed, Series A; names the US as where it invests; 2 named decision-makers on file.
Tribe Capital
Type: VC firm · HQ: San Mateo, CA · Stages: Seed, Series A, Series B, Growth · Focus: AI, Cybersecurity, Crypto and Web3, Generalist · Latest activity: New fund, Oct 2026 · Fund size on file: $500M (SEC Form D, 2021)
Latest fund filing dated Oct 2026; $500M fund on file (SEC Form D, 2021); backs seed, Series A, Series B; names the US as where it invests; 8 named decision-makers on file.
Madrona
Type: VC firm · HQ: Seattle, WA · Stages: Pre-seed, Seed, Series A, Series B, Growth · Focus: AI, Biotech, Consumer, Deep Tech · Latest activity: New deal, Oct 2026 · Fund size on file: $490M (SEC Form D, 2025)
Dated new deal in Oct 2026; $490M fund on file (SEC Form D, 2025); backs pre-seed, seed, Series A; names the US as where it invests; 8 named decision-makers on file.
Translink Capital
Type: VC firm · HQ: Palo Alto, CA · Stages: Seed, Series A, Series B · Focus: AI, Developer Tools, Mobility, B2B · Latest activity: New fund, Sep 2026 · Fund size on file: $174M (SEC Form D, 2021)
Latest fund filing dated Sep 2026; $174M fund on file (SEC Form D, 2021); backs seed, Series A, Series B; names the US as where it invests; 8 named decision-makers on file.
Bison Ventures
Type: VC firm · HQ: San Francisco, CA · Stages: Pre-seed, Seed, Series A, Series B · Focus: AI, Healthtech, Energy, Biotech · Latest activity: New fund, Oct 2026 · Fund size on file: $160M (SEC Form D, 2025)
Latest fund filing dated Oct 2026; $160M 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.
Evolution
Type: VC firm · HQ: New York, NY · Stages: Seed, Series A, Series B, Growth · Focus: Cybersecurity, AI, Developer Tools, SaaS · Latest activity: New fund, Sep 2026 · Fund size on file: $1.2B (SEC Form D, 2026)
Latest fund filing dated Sep 2026; $1.2B fund on file (SEC Form D, 2026); backs seed, Series A, Series B; 8 named decision-makers on file.
Geodesic
Type: VC firm · HQ: Foster City, CA · Stages: Series B, Any stage · Focus: AI, Developer Tools, Fintech, B2B · Latest activity: New deal, Oct 2026 · Fund size on file: $500M (SEC Form D, 2021)
Dated new deal in Oct 2026; $500M fund on file (SEC Form D, 2021); backs Series B, any stage; 8 named decision-makers on file.
First 25 of 165 Series B investors in the US
| Investor | Type | HQ | Stagesour research | Focusour research | Latest fund or deal | Fund sizeas filed or stated | Checked | Contacts |
|---|---|---|---|---|---|---|---|---|
| Alpha Partners | VC firm | New York, NY | Series B, Growth | AI, Developer Tools, Healthtech, Cybersecurity | New fund, Oct 2026 | $200M (SEC Form D, 2024) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Energy Impact Partners | VC firm | United States (London office) | Seed, Series A, Series B, Growth | Energy, Climate Tech, AI, Cybersecurity | Portfolio news, Nov 2026 | $4.5B (own site) | 5 Nov 2026 | 8 names · Unlock |
| Greycroft | VC firm | New York, NY | Series A, Series B, Growth | AI, Industrial Tech, Defense Tech, Healthtech | New deal, Oct 2026 | $600M (SEC Form D, 2022) | 4 Nov 2026 | 5 names · Unlock |
| Kleiner Perkins | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | AI, Fintech, Proptech, Mobility | New fund, Aug 2026 | $995M (SEC Form D, 2026) | 4 Nov 2026 | 2 names · Unlock |
| Tribe Capital | VC firm | San Mateo, CA | Seed, Series A, Series B, Growth | AI, Cybersecurity, Crypto and Web3, Generalist | New fund, Oct 2026 | $500M (SEC Form D, 2021) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Madrona | VC firm | Seattle, WA | Pre-seed, Seed, Series A, Series B, Growth | AI, Biotech, Consumer, Deep Tech | New deal, Oct 2026 | $490M (SEC Form D, 2025) | 5 Nov 2026 | 8 names · Unlock |
| Translink Capital | VC firm | Palo Alto, CA | Seed, Series A, Series B | AI, Developer Tools, Mobility, B2B | New fund, Sep 2026 | $174M (SEC Form D, 2021) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Bison Ventures | VC firm | San Francisco, CA | Pre-seed, Seed, Series A, Series B | AI, Healthtech, Energy, Biotech | New fund, Oct 2026 | $160M (SEC Form D, 2025) | 4 Nov 2026 | 2 names, firm email · Unlock |
| Evolution | VC firm | New York, NY | Seed, Series A, Series B, Growth | Cybersecurity, AI, Developer Tools, SaaS | New fund, Sep 2026 | $1.2B (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Geodesic | VC firm | Foster City, CA | Series B, Any stage | AI, Developer Tools, Fintech, B2B | New deal, Oct 2026 | $500M (SEC Form D, 2021) | 5 Nov 2026 | 8 names, firm email · Unlock |
| Prudence. | VC firm | New York, NY | Series A, Series B | Proptech, AI, Robotics, Developer Tools | New fund, Aug 2026 | $150M (SEC Form D, 2022) | 4 Nov 2026 | 3 names · Unlock |
| Autotech Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B | Mobility, AI, Logistics, Fintech | New fund, Aug 2026 | $25M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Lightspeed Venture Partners | VC firm | Menlo Park, CA | Seed, Series A, Series B, Growth | AI, Healthtech, Gaming, SaaS | New fund, Jul 2026 | $1.2B (SEC Form D, 2024) | 4 Nov 2026 | 8 names · Unlock |
| Greylock | VC firm | San Francisco, CA | Seed, Series A, Series B, Growth | AI | New fund, Jun 2026 | $10.5B (SEC Form ADV) | 5 Nov 2026 | LinkedIn page · Unlock |
| How Women Invest | VC firm | Oakland, CA | Pre-seed, Seed, Series A, Series B | Healthtech, AI, B2B, Climate Tech | New fund, Sep 2026 | $12M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| Ansa | VC firm | New York, NY | Series A, Series B, Growth | AI, Cybersecurity, Healthtech, Media | New fund, May 2026 | $200M (SEC Form D, 2026) | 4 Nov 2026 | 4 names, firm email · Unlock |
| SignalFire | VC firm | San Francisco, CA | Seed, Series A, Series B, Growth | AI, Healthtech, Developer Tools, B2B | New fund, May 2026 | $357M (SEC Form D, 2021) | 4 Nov 2026 | 8 names · Unlock |
| G2 Venture Partners | VC firm | Portola Valley, CA | Series B, Growth | AI, Industrial Tech, Mobility, Energy | New deal, Aug 2026 | $53M (SEC Form D, 2026) | 4 Nov 2026 | 8 names, firm email · Unlock |
| FLF Accelerate | VC firm | Tampa, FL | Pre-seed, Seed, Series A, Series B | AI, Fintech, Media, B2B | New fund, Sep 2026 | $5M (SEC Form D, 2026) | 4 Nov 2026 | 8 names · Unlock |
| True Beauty Ventures | VC firm | Palm Beach Gardens, FL | Seed, Series A, Series B | Consumer, Healthtech, CPG | New fund, Oct 2026 | $308M (SEC Form D, 2022) | 4 Nov 2026 | 8 names, firm email · Unlock |
| Menlo Ventures | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | AI, Media, Robotics, Consumer | New fund, Sep 2026 | $800M (SEC Form D, 2025) | 4 Nov 2026 | 8 names · Unlock |
| SYN Ventures | VC firm | West Palm Beach, FL | Seed, Series A, Series B | Cybersecurity, AI, Defense Tech, Industrial Tech | New fund, Oct 2026 | $300M (SEC Form D, 2022) | 4 Nov 2026 | 8 names · Unlock |
| 500 Global | VC firm | Pleasant Hill, CA | Pre-seed, Seed, Series A, Series B, Growth | Generalist | New fund, Jul 2026 | $138M (SEC Form D, 2021) | 5 Nov 2026 | 8 names · Unlock |
| Massive VC | VC firm | Boulder, CO | Seed, Series A, Series B | Space, AI, Energy, Cybersecurity | New fund, May 2026 | $30M (SEC Form D, 2026) | 4 Nov 2026 | 3 names · Unlock |
| 01A | VC firm | San Francisco, CA | Series A, Series B, Growth | New fund, Nov 2026 | $395M (SEC Form D, 2026) | 4 Nov 2026 | 2 names, firm email · Unlock |
You are seeing 25 of 165. The full list adds 140 more investors and 933 named decision-makers.
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How these 165 break down
By US state
| US state | On this list | Share |
|---|---|---|
| California | 60 | 36% |
| New York | 29 | 18% |
| Florida | 11 | 7% |
| Massachusetts | 9 | 5% |
| Illinois | 8 | 5% |
| Texas | 5 | 3% |
| Washington | 4 | 2% |
| Colorado | 4 | 2% |
| Utah | 3 | 2% |
| Tennessee | 3 | 2% |
By sector
| Sector | On this list | Share |
|---|---|---|
| AI | 126 | 76% |
| SaaS | 108 | 65% |
| Healthtech | 69 | 42% |
| Fintech | 59 | 36% |
| Deep Tech | 41 | 25% |
| Cybersecurity | 37 | 22% |
| Medtech | 36 | 22% |
| Biotech | 34 | 21% |
| Energy | 29 | 18% |
| Industrial Tech | 29 | 18% |
| Consumer | 29 | 18% |
| Hardware | 28 | 17% |
Sector is our research. A firm can carry more than one sector.
By type
| Type | On this list | Share |
|---|---|---|
| VC firm | 159 | 96% |
| Corporate VC | 2 | 1% |
Method and limits
- Source
- 162 of the 165 rows carry an SEC filing (Form D or Form ADV). All 165 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 B.
- 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 B 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 7 Nov 2026.
- Fill rates
- Of 165 rows: stage 165, sector 159, fund size 143, website 165. In the paid file: named decision-makers on 155 rows, firm email on 62, LinkedIn page on 98, check size on 17.
- Corrections
- Email hello@theinvestordatabase.com or use the update form. We act within 5 working days.
Questions
How many Series B investors in the US are there?
We list 165 as of November 2026. 96 of the 165 have a fund filing or a dated deal in the last 12 months. The cities with the most are New York (25), San Francisco (18) and Menlo Park (10).
What is the typical fund size of Series B investors in the US?
The median fund size on file for this list is $102M, across the 113 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 52 do not disclose a size there.
Which sectors do Series B investors in the US back most?
On this list: AI (126), SaaS and B2B software (108), healthtech and digital health (69) and fintech (59). Sector is our research and a firm can carry more than one.
Which Series B investors in the US raised a new fund in the last 12 months?
69 of the 165 have a fund filing dated in the last 12 months. The most recent on this list are 01A (Nov 2026), IVP: Venture capital for the Exceptional (Oct 2026) and True Beauty Ventures (Oct 2026).
Where does the data on Series B investors in the US come from and how often is it updated?
162 of the 165 rows have an SEC filing on file (Form D or Form ADV) and 3 were 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 7 Nov 2026 at the latest. The whole file is re-verified twice a year.
Can I download the list of Series B investors in the US as a spreadsheet?
Yes. The file holds all 165 rows in Excel and CSV, with 933 named decision-makers and 62 firm emails, for $49 one-time. 25 rows are free on this page.
Narrower lists
Series B AI investors in the US (126)Series B SaaS investors in the US (108)Series B healthtech investors in the US (69)Series B investors in California (60)Series B fintech investors in the US (59)Series B deep tech investors in the US (41)Series B cybersecurity investors in the US (37)Series B medtech investors in the US (36)Series B biotech investors in the US (34)Series B investors in New York (29)Series B investors in Silicon Valley (29)Series B energy investors in the US (29)Series B industrial tech investors in the US (29)Series B consumer investors in the US (29)Series B hardware investors in the US (28)Series B B2B investors in the US (27)Series B climate tech investors in the US (27)Series B developer tools investors in the US (21)Series B robotics investors in the US (20)Series B mobility investors in the US (18)Series B media investors in the US (16)
Related lists
Seed investors in the US (1,043)Pre-seed investors in the US (549)Series A investors in the US (372)Growth-stage investors in the US (288)Series B investors in Europe (117)Series B investors in the UK (54)
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