---
title: "29 Series B Investors in Silicon Valley (Nov 2026)"
last_updated: "2026-11-06"
rows: "29"
free_rows: "14"
source: "SEC filings"
canonical: "https://theinvestordatabase.com/lists/series-b-investors-in-silicon-valley/"
---

# 29 Series B investors in Silicon Valley

We list 29 Series B investors in Silicon Valley 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 Menlo Park (10), Palo Alto (8) and San Mateo (3).

- 29 investors
- 15 with a fund filing or dated deal in the last 12 months
- $350M median fund size on file (SEC Form D, 17 firms)
- 162 named decision-makers on file

## First 14 of 29 Series B investors in Silicon Valley

| Investor | Type | HQ | Stages (our research) | Focus (our research) | Latest fund or deal | Fund size | Checked | Profile |
|---|---|---|---|---|---|---|---|---|
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/kleiner-perkins/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/tribe-capital/ |
| 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) | 2026-11-05 | https://theinvestordatabase.com/investors/translink-capital/ |
| Geodesic | VC firm | Foster City, CA | Series B, Any stage | AI, Developer Tools, Fintech, B2B | New deal, Oct 2026 | $500M (SEC Form D, 2021) | 2026-11-05 | https://theinvestordatabase.com/investors/geodesic/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/third-mind/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/lightspeed-venture-partners/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/g2-venture-partners/ |
| 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) | 2026-11-04 | https://theinvestordatabase.com/investors/menlo-ventures/ |
| IVP: Venture capital for the Exceptional | VC firm | Menlo Park, CA | Series B, Growth | AI, Healthtech, Developer Tools, SaaS | New fund, Oct 2026 | $60M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/ivp-venture-capital-for-the-exceptional/ |
| Westly Capital Partners | VC firm | Menlo Park, CA | Pre-seed, Seed, Series A, Series B, Growth | AI, Energy, Industrial Tech, Cybersecurity | New fund, May 2026 | $500M (SEC Form D, 2026) | 2026-11-04 | https://theinvestordatabase.com/investors/westly-capital-partners/ |
| Theory Ventures | VC firm | Portola Valley, CA | Pre-seed, Seed, Series A, Series B | AI, Data, Developer Tools, Cybersecurity | New deal, Jul 2026 | $450M (SEC Form D, 2024) | 2026-11-05 | https://theinvestordatabase.com/investors/theory-ventures/ |
| Calculus VC | VC firm | Foster City, CA | Series A, Series B | AI, Deep Tech, Healthtech, Industrial Tech | New deal, Aug 2026 | $1M (SEC Form D, 2025) | 2026-11-04 | https://theinvestordatabase.com/investors/calculus-vc/ |
| Andreessen Horowitz (a16z) | VC firm | Menlo Park, CA | Seed, Series A, Series B, Growth | AI, Defense Tech, Healthtech, Consumer | New fund, Aug 2026 |  | 2026-11-04 | https://theinvestordatabase.com/investors/andreessen-horowitz-a16z/ |
| Celesta Capital | VC firm | San Mateo, CA | Seed, Series A, Series B | AI, Healthtech, Deep Tech, Biotech | New fund, Sep 2025 | $102M (SEC Form D, 2024) | 2026-11-04 | https://theinvestordatabase.com/investors/celesta-capital/ |

You are seeing 14 of 29. The full list adds 15 more investors and 162 named decision-makers.

Get all 29 investors and 162 named contacts, $49, one-time: https://theinvestordatabase.com/buy/list/series-b-investors-in-silicon-valley
This page: https://theinvestordatabase.com/lists/series-b-investors-in-silicon-valley/

## Method and limits
- Source: All 29 rows carry an SEC filing (Form D or Form ADV). All 29 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. Place: head office in Silicon Valley, matched on city and state.
- Order: 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.
- Fill rates: Of 29 rows: stage 29, sector 28, fund size 25, website 29. In the paid file: named decision-makers on 26 rows, firm email on 9, LinkedIn page on 19, check size on 2.

## Questions
### How many Series B investors in Silicon Valley are there?
We list 29 as of November 2026. 15 of the 29 have a fund filing or a dated deal in the last 12 months. The cities with the most are Menlo Park (10), Palo Alto (8) and San Mateo (3).

### Which Series B investors in Silicon Valley raised a new fund in the last 12 months?
13 of the 29 have a fund filing dated in the last 12 months. The most recent on this list are IVP: Venture capital for the Exceptional (Oct 2026), Tribe Capital (Oct 2026) and Menlo Ventures (Sep 2026).

### What is the typical fund size of Series B investors in Silicon Valley?
The median fund size on file for this list is $350M, across the 17 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 12 do not disclose a size there.

### How do I contact Series B investors in Silicon Valley?
The paid file holds 162 named decision-makers across 26 of these 29 and a firm email for 9. 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 B investors in Silicon Valley come from?
All 29 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.