100X Founder Mastermind · By Application · July 14 – August 4, 2026
From 100 to 5.
A mastermind for founders mid-validation. Bring your own idea. Get unstuck alongside a tight cohort of founders.
The first 100X Founder cohort had 100 founders sharing my time. This one has just 5 teams — each working their own stuck problem, with me in the room every week.
Taught by Ash Maurya — creator of Lean Canvas, author of Running Lean + Scaling Lean, founder of LEANSTACK.
Most founders don't finish a problem-discovery cycle on their first try.
They start interviews and stall. They collect signal but can't synthesize it. They know what's next but can't see the path.
In my closing email to the original 100X cohort, I wrote: "Most founders need 1.5 to 2 ninety-day cycles to hit problem-solution fit. If you're not there yet, that's completely normal."
This mastermind is the push — on your own idea, not a sandbox case.
Who this is for
Doers stuck on synthesis.
This is a high-touch, own-project mastermind. It only works if you've done the foundation work and you're ready to be visible in your progress.
This is for you if:
- You've completed your Lean Canvas v1 (in LEANSpark or anywhere)
- You've conducted at least 3 customer interviews — in any form you can bring
- You can name your current stall point in one sentence
- You're willing to show your work weekly and be a referenceable case study post-cohort
This is not for you if:
- You're still picking which idea to work on
- You haven't scheduled an interview yet
- You want a self-paced course you can fit around full-time work
- You're looking for marketing tactics or launch playbooks
Earlier than this — still choosing an idea, or want to run the loop on a team's idea before your own? Start with the Love The Problem workshop.
My commitment to you
5 founding teams.
5 referenceable case studies.
By August 4, 2026 — the day this mastermind ends — I commit to producing 5 referenceable case studies. Five founding teams who came in stuck on problem-solution fit and left with a validated mafia offer ready to launch.
Your story, your face, your company on leanspark.ai/case-studies when the page launches with this cohort.
That's why I'm taking 5 teams, not 50. I cannot personally guarantee outcomes for 50.
Proof from the last cohort
5 teams in. 5 clear outcomes out.
The last cohort was the same size as this one. Every team left with a decision they could defend — not a maybe.
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Landed their first customers
From customer interviews to a closed mafia offer — real money, real commitment, inside the cohort.
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Pivoted on the evidence
Their interviews said the original idea wasn't the one. They changed direction on the data — before sinking months into the wrong build. That's a win here, not a failure.
The point isn't that everyone ships the idea they walked in with — it's that nobody leaves guessing.
"He taught me to read what customers actually do, not what they say they want."
— Jonatan Sombie · 100X Founder original cohort · founder, storage-layer for AI agents
How we work
Five rules of the mastermind
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Practice trumps theory.
You won't sit through more lectures. You've read the books. Every minute of live time is applied work — on your data, with the cohort.
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Everyone here is stuck on something.
Admission requires you've done the foundation work — canvas, interviews, real attempts. Which means everyone in this room has the framework. The mastermind is for getting unstuck, not for getting taught.
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No lecture. Learn by working.
Each session: you bring your work, the cohort critiques it, I pattern-match what I see. New distinctions get installed just-in-time, when you need them — never before.
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Traction is the goal.
Not a validated idea on paper. A real mafia offer ready to test against real customers. By August 4, five case studies of founders who got there.
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Together we go farther.
You'll spend more time working alongside the other founders than listening to me. Their stuck points sharpen yours; yours sharpen theirs. The cohort is the multiplier — that's why it's 5 teams, not 1:1, and not 50.
The 4 weeks
What we actually do, week by week
One half-day live session per week. Friday office hours for direct unblocking. A 30-min 1:1 with me in week 4.
- Synthesize what you have
From raw signal to first patterns
Bring everything you've collected — interviews, mining notes, canvas drafts. We sort signal from noise as a cohort. Friday office hours: real-time critique of your synthesis.
You leave week 1 with: a sharpened broad-match hypothesis, ready to narrow.
- Narrow the match
Pattern recognition across your evidence
Identify the underserved segment hiding in your data. Run the broad → narrow match discipline live with the cohort. Simulations on the trap that costs most founders six months: confusing rationalized signal with real signal.
You leave week 2 with: a narrow-match pattern triangulated across your evidence.
- Mafia offer sketch
Translate signal into a testable offer
From narrow-match pattern to a concrete, testable mafia offer. UVP hypothesis, early-adopter targeting, a price point you'd actually charge. Cohort critique of each team's draft.
You leave week 3 with: a mafia offer sketch ready to test.
- Verdict + 1:1 with Ash
Customer/Problem Fit verdict + bridge to launch
30-min 1:1 synthesis with me — pattern-match your signal, verdict on your offer, decide your next step. Cohort capstone: each team presents their Customer/Problem Fit verdict and a mafia-offer sketch ready to launch in the next stage.
You leave the mastermind with: a verdict you can defend, a launch-ready mafia offer, and your story for the case-studies page.
Throughout: cohort community runs inside LEANSpark. Async work, peer interviews, and discovery critique all live in the same app you're using for the work.
What's included
In your $1,495 per team
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Live with Ash, four weeks
Four half-day sessions. Weekly Friday office hours for direct unblocking. A 30-min 1:1 with me in week 4 to pattern-match your signal personally. Everything recorded.
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Featured launch of leanspark.ai/case-studies
You're one of the original 5 founding teams the page launches with — your story, your face, your company. Not buried in a wall of testimonials. The page goes live with you on it.
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LEANSpark for two months
Canvas, mining, interview capture, and the cohort community all live in the same app you'll use for the work. You leave with real artifacts and keep using them after the cohort ends.
Taught by
Ash Maurya
Creator of Lean Canvas. Author of Running Lean and Scaling Lean. Founder of LEANSTACK.
"I'm taking 5 teams because that's what I can personally commit to. By August 4, I'm on the hook for 5 case studies. That's the deal."
Fifteen years of teaching the messy work of finding problems worth solving. Coached founders across three continents, six funds, and a couple thousand businesses. LEANSpark — the AI co-founder platform you'll use during the mastermind — is the system I've been refining the whole time.
100X Founder Mastermind · July 14, 2026
$1,495
Per team. Up to 3 founders. One application, one slot.
Apply — 5 spots remaining →No card at application. If accepted, you'll authorize a card via Stripe (no immediate charge) and be charged on July 13. Selection closes Thursday July 9, 11:59 PM CT or when all 5 spots fill.
Apply
3 questions. ~3 minutes.
I read every application personally and reply within 24 hours. If accepted, you'll get a secure payment link to reserve your seat (no immediate charge). If not the right fit, you'll get a recommended next step.
Selection closes Thursday July 9, 11:59 PM CT
Apply now. I'll respond within 24 hours, often sooner.
Start application →What I'll ask: where you're stuck right now · what changes for you if you come out with a validated problem · how you handle feedback · whether you're in for the case-study commitment.
Questions
How is this different from the Love The Problem workshop?
Two different products under the 100X Founder umbrella. Love The Problem is a team-assigned workshop: you run the V.I.B.E. loop on one of a couple of cohort ideas — ideal if you're earlier, still choosing an idea, or want to learn the loop on someone else's problem first. This Mastermind is the opposite: by application, you work your own idea, alongside the other founders who are also mid-validation, with weekly critique and a 1:1 with me. If you're stuck on your own real problem and ready to be visible in your progress, this is the one.
How are applications reviewed?
I read each one personally. I'm looking for clarity on your stall, evidence you've done the foundation work, and signal that you'll do the work alongside me. Selection isn't a black box — if I decline, I'll tell you why.
What if I'm not accepted?
You'll get an honest reply within 24 hours with a recommended next step — the Love The Problem workshop, LEANSpark self-serve, or another path. Not all applications fit this specific cohort, and saying so isn't rejection — it's matching.
Can my co-founder come too?
Yes — that's the per-team pricing. Up to 3 founders per team at $1,495 flat. 4+ requires a brief conversation with me. Co-founders attend live sessions together; the 1:1 in week 4 covers the team.
What if I did the original 100X Founder cohort?
You're exactly who this is built for. The original cohort ran 13 weeks with shorter sessions — broader, lighter per session. This is the version I wanted to run from the start: 5 teams, half-day sessions, Friday office hours, 1:1 with me, outcome commitment. If you're stuck mid-cycle, this is the push.
What's the time commitment?
About 4 hours live + 4 hours async per week, for four weeks. If you can't put in 8 hours a week, don't apply — it's built for people who can do the work alongside me.
What if I miss a session?
All live Monday sessions are recorded. Friday office hours are not — they're working sessions, not lectures. With only 4 main sessions, missing more than one meaningfully hurts your progress and the cohort dynamic — but it's recoverable.
What's the refund policy?
No refunds. Each accepted team takes one of 5 spots that other founders applied for. The application is your decision moment — if you're uncertain, talk to me before applying rather than after.
Can I pay by invoice instead of card?
Reply to your acceptance email and we'll arrange. Standard route is Stripe; invoicing is available on request.
What happens after the four weeks?
You continue working in LEANSpark with your validated problem and mafia-offer sketch — running the campaign to test demand. If you want ongoing 1:1 coaching past the mastermind, that option opens after week 4.