Katherine Boyle

Who they are

Katherine Boyle is General Partner at Andreessen Horowitz — she founded the American Dynamism practice in 2022 and sits on the boards of Anduril Industries, Apex, Hadrian, and Saronic Technologies.

Person

Katherine came up through journalism — Georgetown BA in Government and Philosophy, then a Mitchell Scholarship at the National University of Ireland Galway for a Master of Public Advocacy, then general-assignment reporter work and time at The Washington Post. That grounding in public affairs and narrative is visible in everything she's done since. She moved into venture via General Catalyst, where she co-led the seed practice and made early bets on Anduril Industries and Vannevar Labs before defense tech was fashionable. A stint at Founders Fund followed before she joined a16z in November 2021. She founded the American Dynamism practice at a16z in 2022 — an investment thesis covering defense, aerospace, manufacturing, energy, logistics, and critical infrastructure — and has become its most prominent external voice. Her board seats tell the story: Anduril (observer since 2017, carried from General Catalyst), Apex (spacecraft manufacturing), Hadrian (aerospace manufacturing), and Saronic Technologies (autonomous maritime defense). She writes at The Free Press and publishes essays on the a16z blog on defense tech, national competitiveness, and the skilled trades, and she's appeared on Acquired, Noah Smith's Noahpinion, CNBC, and a string of defense-adjacent podcasts. The through-line from Mitchell Scholar to defense GP is an abiding preoccupation with American institutional capacity — she's been arguing the same thesis since before it was a meme.

Company

A16z opened 2026 with the largest fundraising haul in its history — more than $15 billion across five new funds in January 2026, including a $6.75 billion growth fund, a $1.7 billion AI-infrastructure fund, and a $1.12 billion national-interest fund, representing over 18% of all U.S. VC capital raised in 2025. The national-interest fund is explicitly tied to American Dynamism priorities — defense, housing, and supply-chain tech — and was framed as a strategic move to fund AI, crypto, and companies advancing U.S. interests. Since then the firm has moved quickly: in April 2026 it co-led rounds in Stipple Bio and Westmag (a drone-motor and robot-actuator company); in May it closed a $2.2 billion fifth crypto fund and led an $11 million seed in Westmag and a $16 million Series A in Pit; in June it led a $33 million seed in Ornn, a compute-power marketplace; and in July 2026 it led a €385 million Series A in Mistral AI at a $2 billion valuation. The firm also announced a January 2026 partnership with Booz Allen Hamilton to accelerate advanced tech for U.S. government customers, a direct expression of the American Dynamism thesis at institutional scale.

Market

A16z sits at roughly $90 billion AUM, level with Sequoia Capital as one of the two largest U.S. venture firms, with an 18% share of 2025 U.S. VC capital — a scale that lets it offer a full-service operating platform (talent, go-to-market, policy, recruitment) that capital-only rivals can't match. Its primary competitors are Sequoia, Insight Partners, Bessemer, Accel, and NEA. Geopolitical tension with China is the structural tailwind behind the American Dynamism and national-interest fund strategy, positioning a16z as a deliberate conduit for U.S. tech leadership in defense, sovereign AI, and industrial capacity.

Network

Katherine's closest named collaborator at a16z is David Ulevitch, with whom she co-hosts content on the Bio x American Dynamism thesis. She works alongside General Partners Marc Andreessen, Ben Horowitz, and Managing Partner Raghu Raghuram. Her board network anchors her in the defense-tech operator community — Anduril, Apex, Hadrian, Saronic, Castelion — and she sits on the boards of The Free Press and the Mercatus Center at George Mason University.

David Ulevitch· General Partner, a16z (American Dynamism / Bio collaboration)
Marc Andreessen· General Partner, Andreessen Horowitz
Ben Horowitz· General Partner, Andreessen Horowitz
Raghu Raghuram· Managing Partner, Andreessen Horowitz

How they likely show up

Journalism background (Washington Post, general-assignment reporter) before VC → likely thinks in narrative and public argument, not just financial models; comfortable making a case to a broad audience.
Founded a named investment practice (American Dynamism, 2022) and has driven it from thesis to dedicated fund → high conviction, willing to stake personal brand on a contrarian bet before it becomes consensus.
Active across a wide range of public platforms — Acquired, CNBC, Noah Smith's Noahpinion, defense-specific podcasts — on consistent themes → her public voice is a deliberate instrument, not casual; she uses media to shape the category she invests in.
Board seats span four companies (Anduril, Apex, Hadrian, Saronic) across defense, space, and maritime — all hardware-heavy, long-cycle businesses → she operates at the intersection of patient capital and national-security timelines, not typical SaaS velocity.
Mitchell Scholar in Public Advocacy, Georgetown Government/Philosophy BA → she frames investment theses in civic and institutional terms, not just market-size terms; expect arguments grounded in national interest, not just TAM.
Carries Anduril relationship from General Catalyst (2017) through to a16z board seat → long-term relationship investor; loyalty and continuity matter to her more than deal-by-deal opportunism.

Conversation tips

→ Come in with a specific view on U.S. industrial capacity or defense procurement — she engages with the substance of the thesis, not surface enthusiasm for 'defense tech.'
→ Reference a specific piece she wrote at The Free Press or the a16z blog — she'll know immediately whether you read it or skimmed the headline.
→ Ask about the Mitchell Scholarship and the Galway years — it's an unusual detour for a Silicon Valley GP and she'll have a story about why public advocacy mattered before VC.
→ Don't pitch the American Dynamism angle as a recent trend — she was making this argument in 2022 when it wasn't fashionable; treat it as an established conviction, not a hot take.
→ If you're building in defense, aerospace, or manufacturing, be precise about where you sit in the supply chain — she's on boards at Anduril, Apex, Hadrian, and Saronic and will immediately cross-reference.

Toolbox

Openers

Open on the $1.12 billion national-interest fund from January 2026 — it's the first time American Dynamism has its own dedicated capital pool, a concrete validation of what she's been arguing since 2022.
Reference the Booz Allen Hamilton partnership announced in January 2026 — it's the most direct bridge between the American Dynamism thesis and actual U.S. government customers, and she's likely thinking about what the partnership model means for portfolio companies.
Mention her Saronic Technologies board seat — autonomous maritime defense is one of the less-covered corners of the defense-tech wave, and it's a pointed bet on a specific gap in U.S. naval capacity.

Discovery questions

The American Dynamism practice went from thesis to meme to dedicated fund in roughly three years — what changed in the LP base that made a named national-interest fund possible in January 2026?
You've carried the Anduril relationship from General Catalyst all the way through to a16z — how do you think about continuity of board presence across firm transitions, and what does that signal to founders?
Your background is journalism and public advocacy before VC — how does the Mitchell Scholarship framing of 'public good' actually translate into how you underwrite a defense or infrastructure deal?

Avoid

Don't frame American Dynamism as a recent or opportunistic pivot to defense spending — she built the thesis before it was consensus and will disengage from anyone who treats it as a macro trade rather than a long-held conviction.

Make it yours