# Ben Horowitz, Horowitz at Andreessen Horowitz > Ben Horowitz, Horowitz at Andreessen Horowitz. 10 investments on record. The rounds they were named in and the filings that name them, each with its source. Source: https://millionrounds.com/person/ben-horowitz (Millionrounds; every figure on the page links to its filing or article) Las Vegas, US · Partner # Ben Horowitz Horowitz at [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) Latest rounds - **Echelon** Round Oct 2026 - **Muzy** Seed · $4.4M Jun 2013 - **Nicira Networks** Series B · $11.3M Sept 2010 Backs *Software* *Collaboration Tools* *AI* *Govtech* Profile summary - **Rounds named:** 10 last Jun 2013 - **Filings:** 20 with regulators - **Books:** 3 written What this record rests on - ✓ **Named in rounds** 10 rounds name them - ✓ **On filings** 20 filings with a regulator - ✓ **Linked to a firm** At Andreessen Horowitz - **Claimed** Not claimed yet Titles come from filings their firm signed. [Correct or remove](https://millionrounds.com/corrections?person=ben-horowitz)[Is this you? Claim it](https://millionrounds.com/claim?person=ben-horowitz) ## The firm [**Andreessen Horowitz** VC firm · US **320** cheques in 12 months **1649** all time **110** led deploying](https://millionrounds.com/fund/andreessen-horowitz) ## Rounds they were named in - **Rounds:** 11 - **Led:** 0 - **Disclosed:** $37.3M - **Active:** 2007–26 2026 - [Echelon](https://millionrounds.com/company/echelon) *Round* *SA* Oct 2026 Joined · +3 investors 2013 - [Muzy](https://millionrounds.com/company/muzy) *Seed* **$4.4M** *US* Jun 2013 Joined · +4 investors · historical 2010 - [Nicira Networks](https://millionrounds.com/company/nicira-networks) *Series B* **$11.3M** *US* Sept 2010 Joined · +1 investor · historical 2009 - [Fluther](https://millionrounds.com/company/fluther) *Seed* **$600k** *US* Sept 2009 Joined · +6 investors · historical - [ExtraHop Networks](https://millionrounds.com/company/extrahop-networks) *Series A* **$5.1M** *US* Apr 2009 Joined · +2 investors · historical - [GoodData](https://millionrounds.com/company/gooddata) *Seed* **$2.5M** *US* Apr 2009 Joined · +4 investors · historical - [Asana](https://millionrounds.com/company/asana) *Seed* **$1.2M** *US* Apr 2009 Joined · +13 investors · historical 2008 - [Wealthfront](https://millionrounds.com/company/wealthfront) *Seed* **$3M** *US* Dec 2008 Joined · +7 investors · historical - [Metaplace](https://millionrounds.com/company/metaplace) *Series B* **$6.7M** *US* Oct 2008 Joined · +3 investors · historical - [Qik](https://millionrounds.com/company/qik) *Round* *US* Aug 2008 Joined · +1 investor · historical 2007 - [AppNexus](https://millionrounds.com/company/appnexus) *Seed* **$2.5M** *US* Dec 2007 Joined · +6 investors · historical By stage - Seed **6** - Round **2** - Series B **2** - Series A **1** What they backed Software **2** Collaboration Tools **1** AI **1** Govtech **1** Web3 & Crypto **1** Fintech **1** Alongside - [Marc Andreessen *9*](https://millionrounds.com/fund/marc-andreessen) - [Ron Conway *3*](https://millionrounds.com/fund/ron-conway) - [SV Angel *3*](https://millionrounds.com/fund/sv-angel) - [Adam D'Angelo *1*](https://millionrounds.com/fund/adam-d-angelo) - [Aditya Agarwal *1*](https://millionrounds.com/fund/aditya-agarwal) - [Andy Rachleff *1*](https://millionrounds.com/fund/benchmark) - [Avra *1*](https://millionrounds.com/fund/avra) - Bruce Dunlevie *1* Rounds where a report named this person rather than a firm, matched on name: read it as a strong hint, not proof, since people share names. ## Companies they are listed as backing Portfolio - [Anyscale](https://millionrounds.com/company/anyscale) - [AppNexus](https://millionrounds.com/company/appnexus) - [Arweave](https://millionrounds.com/company/arweave) - [Asana](https://millionrounds.com/company/asana) - [Barefoot Networks](https://millionrounds.com/startup/barefoot-networks-inc) - [Celo](https://millionrounds.com/company/celo) - [Cresta](https://millionrounds.com/startup/cresta) - [CryptoKitties](https://millionrounds.com/company/cryptokitties) - [Domo](https://millionrounds.com/startup/domo-2) - [Eco](https://millionrounds.com/startup/eco) - [Factual](https://millionrounds.com/company/factual) - [Fluther](https://millionrounds.com/startup/fluther) - [Forte](https://millionrounds.com/startup/forte-2) - [GoodData](https://millionrounds.com/startup/gooddata) - [Lytro](https://millionrounds.com/company/lytro) - [Mayvenn](https://millionrounds.com/startup/mayvenn-2) - [Medium](https://millionrounds.com/startup/medium) - [Muzy](https://millionrounds.com/startup/muzy) - [Oasis Labs](https://millionrounds.com/company/oasis-labs) - [Reflexer Labs](https://millionrounds.com/startup/reflexer-labs) - [SignalFx](https://millionrounds.com/company/signalfx) - [SnapLogic](https://millionrounds.com/company/snaplogic) - [Tanium](https://millionrounds.com/company/tanium) - [TripActions](https://millionrounds.com/company/tripactions) - [UnitedMasters](https://millionrounds.com/company/unitedmasters) - [dYdX](https://millionrounds.com/company/dydx) - Apptio - Disruptive Multimedia - ExtraHop Networks - Jawbone - Magnet Beauty - Metaplace - Nicira Networks - Okta - Qik - Tidemark ## Where they are named on record Filings - SEC Form D · Venture Capital fund **[ELEAH](https://millionrounds.com/fund/eleah)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[AH AD](https://millionrounds.com/fund/ah-ad)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[ATOAH](https://millionrounds.com/fund/atoah)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[DATAH](https://millionrounds.com/fund/datah)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[Carolah](https://millionrounds.com/fund/carolah)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[AH AI](https://millionrounds.com/fund/ah-ai)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[AH American Dynamism Fund II-B](https://millionrounds.com/fund/ah-american-dynamism-fund-ii-b)** Managing Member of the GP of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[AH Crypto Fund V-B](https://millionrounds.com/fund/ah-crypto-fund-v-b)** Managing Member of the GP of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[CURAH](https://millionrounds.com/fund/curah)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[AH Crypto](https://millionrounds.com/fund/ah-crypto)** Ultimate managing member of the Issuer's GP on 2 filings · since 2026 - SEC Form D · Other investment fund **AH 2026 Fund Multiplexer (Unblocked) II, L.P.** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[AH American Dynamism](https://millionrounds.com/fund/ah-american-dynamism)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[Innovation](https://millionrounds.com/fund/innovation)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz)** Ultimate managing member of the Issuer's GP on 4 filings · since 2026 - SEC Form D · Other investment fund **AH 2026 Fund Multiplexer (Blocked) II-C, L.P.** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Other investment fund **AH 2026 Fund Multiplexer (Blocked) II, L.P.** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Other investment fund **AH 2026 Fund Multiplexer (Unblocked) II-C, L.P.** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[TAP Investment](https://millionrounds.com/fund/tap-investment)** Ultimate managing member of the Issuer's GP since 2026 - SEC Form D · Venture Capital fund **[CURAH](https://millionrounds.com/fund/curah)** Member of the GP LLC since 2025 - SEC Form D · Venture Capital fund **[AH Bio Fund V-B](https://millionrounds.com/fund/ah-bio-fund-v-b)** Managing Member of the GP of the Issuer's GP since 2025 Each row is a document a firm filed with a regulator: somebody signed it, and it carries a date. ## Also at Andreessen Horowitz - [**Marc Andreessen** Co-Founder *38 rounds*](https://millionrounds.com/person/marc-andreessen) - [**Jeff Jordan** Managing Partner at A16z *8 rounds*](https://millionrounds.com/person/jeff-jordan) - [**David Ulevitch** Council Member *6 rounds*](https://millionrounds.com/person/david-ulevitch) - [**Lars Dalgaard** Board Member / Board Partner *4 rounds*](https://millionrounds.com/person/lars-dalgaard) - [**Steve Papa** Founder and CEO *2 rounds*](https://millionrounds.com/person/steve-papa) - [**Arianna Simpson** Managing Partner *1 round*](https://millionrounds.com/person/arianna-simpson) - [**Peter Johnson** GTM *1 round*](https://millionrounds.com/person/peter-johnson-3) - [**Peter Levine** General Partner *1 round*](https://millionrounds.com/person/peter-levine) ## Their books - The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers―Straight Talk on the Challenges of Entrepreneurship Ben Horowitz · 2014 4.19 from 114,702 ratings on Goodreads About the book A lot of people talk about how great it is to start a business, but only Ben Horowitz is brutally honest about how hard it is to run one. In The Hard Thing About Hard Things, Ben Horowitz, cofounder of Andreessen Horowitz and one of Silicon Valley's most respected and… On AmazonListen on Audible - What You Do Is Who You Are: How to Create Your Business Culture Ben Horowitz · 2019 4.00 from 8,251 ratings on Goodreads About the book Ben Horowitz, a leading venture capitalist, modern management expert, and New York Times bestselling author, combines lessons both from history and from modern organizational practice with practical and often surprising advice to help executives build cultures that can weather… On AmazonListen on Audible - Good Product Manager/Bad Product Manager Ben Horowitz · 2007 4.31 from 103 ratings on Goodreads About the book This document focuses specifically on product management in the context of a "divlet" [small division] in AOL. Related key assumptions are that there is a corresponding "business owner" in each of the brands, and that the "products" are generally online services intended for… On AmazonListen on Audible - Find the books for what you are building, or how you invest. [Open the Reading List](https://millionrounds.com/reading-list) As an Amazon Associate we earn from qualifying purchases. ## Find people like Ben Filter every partner and angel by firm, kind, market and whether we watched them invest. Free with an account. Search people[How we know what we know](https://millionrounds.com/methodology)