Marc Andreessen

Co-Founder and General Partner, Andreessen Horowitz · 0 appearances on the record.

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investorfounderengineerauthorhost@pmarca ↗a16z.com ↗Wikipedia ↗

Marc Andreessen co-created the Mosaic web browser and co-founded Netscape before establishing the venture capital firm Andreessen Horowitz in 2009. He has written influential essays and backed major technology companies including Facebook, Coinbase, GitHub, and OpenAI.

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Everything Marc Andreessen said on Sourcery that made the record, most notable first. Filter by type, assessment or year in the ledger →

The other half of the tape: Marc Andreessen's own voice is left out of every number here. Other people bring the name up 71 times in 22 episodes on Sourcery. 6 statements on the record name them. every mention, with the transcript →

Who brings them up most Molly O'Shea 50Qasar Younis 5Cyan Banister 5Alex Immerman 4Henry Ward 2Michel Del Buono 1Jeffrey Katzenberg 1Bucky Moore 1

Statements about Marc Andreessen, by other people (6)

Opinion
Banister: Marc Andreessen is wrong to tell founders to avoid introspection
“But if you actually become very introspective, and I know Marc Andreessen says, don't do that, but I spend a lot of time being introspective and I would say that he's wrong. And I'd love to have a chat with him about this. You can actually surgically go in and…”
Cyan Banister Jul 10, 2026 ▶ 34:10 "Dig Through Your Couches. SpaceX Needs It." Cyan Banister on Luke Nosek's Pitch · Sourcery with Molly O'Shea
Insight
Altman: Founders pick specific partners over fund size, saving mid-sized VCs
“The part I'm least sure about with the framing is that the middle shouldn't exist. That I don't know if I have clarity on that yet. The reason is I still think that a series A or B or C founder, for the most part, is going to pick a partner that they really li…”
Jack Altman Jun 27, 2025 ▶ 17:04 How Jack Altman Hit 100x Growth | Uncapped, AI, VC, Founders · Sourcery with Molly O'Shea
Opinion
Altman: Mid-sized VC funds can succeed despite Andreessen's barbell theory
“Marc Andreessen mentioned that There's basically this barbell where you can either be really small, you can be really big. The middle is not there, but I had a guest recently that I haven't posted yet who, you know, we didn't talk numbers, but I would say is i…”
Jack Altman Jun 27, 2025 ▶ 4:04 How Jack Altman Hit 100x Growth | Uncapped, AI, VC, Founders · Sourcery with Molly O'Shea
Insight
Del Buono: a16z Hires for Outsized Strengths, Not Lack of Flaws
“They said, we don't hire people for lack of flaws. We hire people for their sort of their skills.”
Michel Del Buono Mar 27, 2026 ▶ 50:04 Inside Marc Andreessen & Ben Horowitz’s Multi-Family Office · Sourcery with Molly O'Shea
Assertion Not checkable as stated
Armstrong: Marc Andreessen mentored me on DC policy and communications
“Marc Andreessen's been an incredible mentor about how to do policy and In DC and comms.”
Brian Armstrong Jun 26, 2026 ▶ 56:34 Brian Armstrong: Rebuilding Coinbase Around Intelligence · Sourcery with Molly O'Shea
Disclosure
Immerman: a16z Growth team has operated with only 7 to 12 people
“So the growth team has always been small. We ranged from like seven to 12 people. When we started, we were seven, including Marc.”
Alex Immerman Mar 13, 2026 ▶ 42:23 Inside a16z Growth: Waymo, Stripe, ElevenLabs, Revolut, Coinbase, Kalshi · Sourcery with Molly O'Shea

Every mention by year

tap a year for its mentions
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0815202420252026episodes it came up in
0027.5415202420252026episodesmentions per episode
2026 38 mentions in 12 episodes 3 per episode
2025 31 mentions in 8 episodes 4 per episode
2024 2 mentions in 2 episodes 1 per episode

Played on the show (1)

Episodes where a recording of Marc Andreessen was played rather than Marc taking part, or where the tape carries an address with nobody putting questions to them. Listed because the words are on the record, kept out of every score on this page because they were not said on this show. We read this off the tape: who was spoken to, who was asked something, who answered whom.

EpisodeDateOn tapeWhat it is
How Marc Andreessen, Ben Horowitz, & David Ulevitch Started a16z’s American Dynamism Fund Nov 18, 2025 24s clip played
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