Andreessen Horowitz
Andreessen Horowitz's Overview
Andreessen Horowitz (often abbreviated as a16z) is a prominent venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz. Headquartered in Silicon Valley, a16z backs bold entrepreneurs building the future through technology, with a significant and growing focus on artificial intelligence. The firm invests across various stages, from seed to growth, and in diverse sectors including AI, bio + healthcare, consumer, crypto, enterprise, fintech, and games. a16z is known for its comprehensive support model, providing portfolio companies with access to deep expertise in innovation, talent acquisition, market intelligence, policy, business development, and brand building. Their partners frequently serve on the boards of their portfolio companies, offering hands-on guidance.
Where is Andreessen Horowitz's Headquarters?
HQ Function
Serves as a primary hub for investment activities, partner meetings, portfolio company engagement, and overall firm operations in Silicon Valley.
Notable Features:
Situated on Sand Hill Road, renowned globally as the epicenter of venture capital. The offices are modern and designed to foster collaboration and host entrepreneurs.
Work Culture:
Characterized by a fast-paced, intellectually rigorous environment. Strong emphasis on founder support, deep technological understanding, and a network-driven approach to value creation.
HQ Significance:
Its location in Menlo Park offers unparalleled proximity to a dense ecosystem of startups, established tech companies, research institutions, and engineering talent, crucial for AI and tech investments.
Values Reflected in HQ: The headquarters embodies values of innovation, entrepreneurial empowerment, technological advancement, and long-term strategic partnership.
Location:
Andreessen Horowitz invests globally, with a primary focus on US-based technology companies. Its physical presence includes key US tech hubs—Menlo Park, San Francisco, New York, and Miami Beach—and an international office in London. This network enables a16z to support its portfolio companies in scaling worldwide, accessing international markets and talent, and navigating complex global landscapes, particularly for AI technologies that have universal applications. The firm actively fosters innovation ecosystems and backs transformative companies regardless of their origin.
Street Address:
2865 Sand Hill Road, Suite 101
City:
Menlo Park
State/Province:
CA
Country:
USA
Andreessen Horowitz's Global Presence
San Francisco, CA/USA
Address: One Market Plaza, Steuart Tower, San Francisco, CA 94105
Serves as a key Northern California operational base, providing deep connectivity to the San Francisco tech ecosystem and its talent pool.
New York, NY/USA
Address: 11 Madison Avenue, New York, NY 10010
Provides strategic access to East Coast markets, financial institutions, media companies, and a diverse talent base.
Miami Beach, FL/USA
Address: Various locations in Miami Beach (specific public address not listed)
Engages with the South Florida tech boom and acts as a potential gateway for connections to Latin American markets.
London, UK/UK
Address: 11-12 Hanover Square, London, W1S 1JJ
Establishes a strategic presence in a key European financial and technology hub, accessing local talent, markets, and innovation.
Buying Intent Signals for Andreessen Horowitz
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Executive Team of Andreessen Horowitz
As of April 2025, Andreessen Horowitz' leadership includes:
Investors of Andreessen Horowitz
Andreessen Horowitz has been backed by several prominent investors over the years, including:
Executive New Hires/Exits in the Last 12 Months
Andreessen Horowitz dynamically adjusts its leadership to spearhead emerging technology frontiers, especially in AI. Recent notable changes include the appointment of new General Partners focused on AI and transitions in top leadership roles to strengthen firm operations and investment strategy.
New Appointments:
Technology (Tech Stack) used by Andreessen Horowitz
Discover the tools Andreessen Horowitz uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
Andreessen Horowitz Email Formats and Examples
Andreessen Horowitz (a16z) primarily utilizes a common professional email format. The most frequently observed pattern is [first_initial][last]@[companydomain].com. For instance, an email to 'Jane Doe' would likely be 'jdoe@a16z.com'. While this format is widely recognized, direct unsolicited emails may have varying response rates; introductions through mutual connections or official firm channels are often more effective for engagement.
[first_initial][last]@a16z.com
Format
jdoe@a16z.com
Example
70%
Success rate
News and media
Wall Street Journal • April 16, 2024
Andreessen Horowitz Is Raising $7.2 Billion for New Funds, Including AI Focus
Andreessen Horowitz is in the process of raising approximately $7.2 billion for a new set of funds, signaling continued aggressive investment in technology startups. A significant portion of this new capital is expected to be allocated to artificial intelligence and related sectors, underscoring the firm's commitment to the AI revolution....more
a16z.com • May 21, 2024
a16z: AI x Science, From Bench to Bedside
Andreessen Horowitz published an insightful article exploring the transformative impact of artificial intelligence on scientific research and development, particularly within biology and medicine. The piece by Vineeta Agarwala, Vijay Pande, and Andy Tran highlights how AI is accelerating discovery, optimizing drug development, and enabling personalized healthcare, reflecting the firm's deep investment thesis in AI-driven scientific breakthroughs....more
TechCrunch • January 24, 2024
a16z hires another AI founder as general partner to lead early-stage investments
Andreessen Horowitz announced the hiring of Anjney Midha, co-founder of AI startup Ubiquity6 (acquired by Discord), as a new general partner. Midha will focus on leading early-stage investments in artificial intelligence, further bolstering a16z's expertise and capital deployment in the rapidly evolving AI landscape....more
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