Zach Coelius

Who they are

Zach Coelius is Managing Partner at Coelius Capital — a five-time entrepreneur who founded Triggit, a Facebook retargeting pioneer acquired by LinkedIn, before turning solo GP.

Person

Zach studied Political Science and History at the University of Minnesota, then earned a Master's in International/Global Studies at the University of Limerick — an unusual academic path that likely sharpened the qualitative, pattern-recognition lens he now applies to investing. He built his operator credibility as Founder/CEO of Triggit, an online advertising technology company that pioneered Facebook retargeting and was ultimately acquired by LinkedIn. After Triggit he did a stint as Senior Advisor at McKinsey & Company before making the full pivot to venture. He launched Coelius Capital in January 2015 when it was a solo GP fund investing at Seed to Series A — and has run it that way ever since. Alongside the fund he built an AngelList Syndicate and Rolling Fund backed by 3,000+ investors, which he uses as a diligence engine. His public voice is active: LinkedIn writing on fundraising, AI, and startup strategy, appearances on SaaStr and the Meb Faber Research Podcast, and speaking slots at Web Summit 2023, Web Summit Qatar 2024, LUMA Partners' Digital Marketing Summit, and Startup Grind Tbilisi. The through-line is an operator who bet on qualitative judgment over quantitative screens — his Meb Faber episode title, 'I Like To Play Where It's Still Qualitative,' says it plainly. He also hosts monthly in-person founder/investor dinners in San Francisco, which signals that deal flow for him is as much community-built as pipeline-sourced.

Company

Coelius Capital made 2 investments in 2025, including participation in the Seed round of Known Dating — a signal that Zach is still actively deploying at the earliest stages. The fund raised $33.3 million for its latest fund in early 2022, a period the firm itself has noted was marked by down rounds, structured deals, and scarce conviction across the broader venture market. Coelius Capital remains a solo GP operation, founded and managed by Zach, focused on Seed to Series A in SaaS, Enterprise, Fintech, AI, and Data sectors, with a particular lean toward national-security technologies and B2B2C models with unconventional ideas.

Market

Coelius Capital operates in early-stage venture, a segment that saw significant turbulence in 2022–2023 — down rounds and structured deals shifted power toward cautious investors. The fund differentiates as a solo GP with an operator background, positioning against multi-partner institutional funds by offering founder-to-founder credibility and domain knowledge in B2B and national-security tech. The 3,000+ investor AngelList syndicate gives it co-investment scale that punches above its solo structure.

Network

Zach has shared stages with Jason Calacanis, who featured him on the Ask An Angel podcast series, and Tiffany Luck of GGV Capital, with whom he co-paneled at SaaStr on navigating venture gatekeepers. His community-building through monthly San Francisco dinners likely keeps him connected to a wide range of Bay Area founders and investors, though named attendees aren't surfaced in the available claims.

Jason Calacanis· Angel investor / podcast host
Tiffany Luck· Investor, GGV Capital

How they likely show up

Explicitly titles a public talk 'I Like To Play Where It's Still Qualitative' → prefers judgment-driven decisions over quantitative screens; likely skeptical of purely data-driven pitches.
Solo GP structure maintained since 2015 → high autonomy, fast decisions, no partnership committee to navigate — meetings can move quickly if he's interested.
Founded and ran Triggit as a CEO before investing → thinks like an operator first; will stress-test execution assumptions, not just the market thesis.
AngelList syndicate with 3,000+ investors used as a 'diligence engine' → treats network as an information asset; reciprocity and information-sharing likely resonate with him.
Hosts monthly in-person founder/investor dinners → values warm, relationship-first deal flow over cold inbound; community signal matters to him.
Active LinkedIn writer and frequent conference speaker (SaaStr, Web Summit, LUMA) → comfortable being visible and opinionated; likely responds well to being challenged on a specific view he's published.

Conversation tips

→ Reference a specific LinkedIn post or podcast episode he's done — 'I caught your Meb Faber episode on qualitative investing' lands better than generic praise.
→ Come with a clear answer to why this is still a qualitative, judgment-call space — he actively seeks bets where data doesn't yet dominate.
→ Don't ask for a warm intro through formal channels; if you can get in front of him at a dinner or event, that's the channel he has deliberately built.
→ Be direct about your operator experience or lack thereof — he came up as a founder and will appreciate honesty about what you have and haven't built.
→ Ask for his view, not his money — he's publicly opinionated on fundraising, AI, and startup strategy; engaging him on a thesis will open a real conversation.

Toolbox

Openers

Open on the AngelList syndicate as a diligence engine — he built a 3,000+ investor network specifically to sharpen his judgment, not just to deploy capital; that's an unusual structural choice worth unpacking.
Reference the LUMA Partners Digital Marketing Summit talk on 'Financing in Challenging Markets' — it was 2023, the market was brutal, and his take on conviction during down rounds is a live thesis you can probe.
Mention Triggit's Facebook retargeting work and its acquisition by LinkedIn — he was building ad-tech infrastructure before programmatic was mainstream, and that operator arc directly shapes how he evaluates founders today.

Discovery questions

Your Meb Faber episode is titled 'I Like To Play Where It's Still Qualitative' — where in AI and data right now do you think that window still exists before the quants take over?
You've run Coelius Capital as a solo GP since 2015 — how has the syndicate's role as a diligence engine evolved as the fund has matured and the market has shifted?
Triggit was acquired by LinkedIn — how much does your own exit experience as a founder shape what you're willing to tell a founder to hold out for versus take the deal?

Avoid

Don't pitch with a deck heavy on TAM slides and growth projections — he has said outright that he plays where it's still qualitative, so leading with spreadsheet-first logic signals you haven't done the homework on how he thinks.

Make it yours