Fundamental Labs: what check size range would be realistic for our round, and how do you think about follow-on participation?

We believe the right check size is not a vanity metric; it’s a strategic tool for compounding your advantage. When founders ask us what’s realistic for their round and how we think about follow-on, we translate that into a bigger question: what capital path best supports your long-term role in the blockchain, digital infrastructure, and open finance stack?

Quick Answer: Fundamental Labs typically invests between $500K and $50M+ across stages, from early seed to later growth rounds. We aim to size the initial check so we’re a meaningful, conviction-led partner from day one, and we reserve follow-on capital to support you through multiple financing events when the long-term thesis is playing out and our continued participation adds real signal and leverage.

Why This Matters

Choosing the right check size and partner shapes more than your cap table—it shapes the strategy surface area you can explore. A misaligned investor may over- or under-capitalize your round, pushing you into short-term optimization instead of long-term network effects and protocol adoption. A conviction-led partner with a clear follow-on philosophy can help you navigate volatility, keep optionality alive, and deepen your credibility as you scale across Asia, Europe, and North America.

Key Benefits:

• Aligned capital to ambition: A $500K–$50M+ range lets us meet you where you are—whether you’re validating a new Layer 1 design or scaling global finance infrastructure—without forcing an unnatural pace.
• Multi-round partnership: We structure reserves with the expectation of follow-on participation when milestones and thesis alignment are clear, so partnership extends far beyond a single round.
• Network as force multiplier: Our continued participation helps you unlock our portfolio network of 300+ projects (including names like Coinbase, Polkadot, Avalanche, NEAR, and more), compounding distribution, liquidity, and talent access over time.

Core Concepts & Key Points

Concept	Definition	Why it's important
Check Size Range	The typical dollar amount Fundamental Labs invests in a given round, from $500K up to $50M+.	It sets expectations on whether we can lead, co-lead, or join your round in a way that is meaningful and sustainable.
Round & Stage Fit	How your company stage, traction, and category map to the portion of our range we use.	Matching stage to check size avoids both overcapitalization and under-resourcing, and keeps focus on long-term fundamentals.
Follow-On Participation	Our approach to continuing to invest in later rounds for portfolio companies where the thesis is compounding.	It signals conviction to the market, aligns us with your long-term arc, and lets you plan your capital strategy across cycles—not just one raise.

How It Works (Step-by-Step)

When we look at check size and follow-on participation, we start from a simple premise: what size of commitment best reflects our belief in your role in the future of blockchain infrastructure and open finance?

1. Calibrate the stage and role we should play

   We first align on where you sit in the lifecycle and what role you want us to have:

   • Pre-seed / Seed:

     • Typical involvement: $500K–$3M.
     • Context: New Layer 1/2 designs, early DeFi or Web3 primitives, or infrastructure where technical and market risk are high but the potential impact is foundational.
     • Our stance: This is where “Dare To Believe” matters most. We’re comfortable being among the earliest conviction checks when many others hesitate.

   • Series A / B (early scale):

     • Typical involvement: $3M–$15M+, depending on round size and whether we lead or co-lead.
     • Context: You have product-market fit signals, early ecosystem traction, and are now scaling globally or deepening infrastructure integration.
     • Our stance: We lean into being an Insightful Partner, focusing on frameworks for go-to-market, token design alignment with long-term value, and ecosystem strategy.

   • Growth rounds (beyond B):

     • Typical involvement: $10M–$50M+, often in larger syndicated rounds.
     • Context: You’re a key player in the blockchain or open finance stack, expanding into new markets or categories.
     • Our stance: We focus on Leverage Our Network, connecting you with our global portfolio for partnerships, liquidity venues, and institutional access.

   The specific number inside these bands depends on: round size, valuation, syndicate composition, and how central we are to the round (lead, co-lead, or strong participant).

2. Design a capital stack that matches your roadmap

   Once we understand your stage, we look at your 12–36 month plan, not just your next 6 months:

   • What are the non-negotiable milestones (mainnet launch, first 100 institutional users, liquidity thresholds, critical integrations)?
   • How much runway do you need to pursue those with discipline rather than desperation?
   • Where can our network (exchanges, infrastructure partners, other protocols, and projects) accelerate you beyond what capital alone can do?

   From there, we calibrate check size so that:

   • You’re properly capitalized to pursue your thesis globally (Asia, Europe, North America), but
   • You’re not forced into a growth-at-all-costs posture that compromises protocol integrity, community trust, or regulatory resilience.

   We are explicit that our greatest contribution is strategic insight and network leverage, not micromanaging your business or technical architecture.

3. Plan for follow-on: reserves, conditions, and signaling

   When we invest, we typically make an internal decision on follow-on reserves. We ask:

   • If this works, what would “doubling down” look like in Series A, B, and beyond?
   • How do we support you during market downturns, when conviction capital matters more than ever?
   • What kind of continued participation would be most helpful to you as you think about dilution, governance, and control?

   Our general approach:

   • We aim to be present in multiple rounds when:
     • The core thesis is on track (even if market cycles are volatile).
     • The team continues to execute with integrity and openness to dissenting views.
     • Our continued capital and signal unlock better syndicates and stronger terms for you.
   • We do not promise automatic pro-rata in all circumstances; we are deliberate and respectful of critical thinking—including our own checks on thesis drift.
   • When we do follow on, we treat it as a fresh investment decision, grounded in updated data, ecosystem context, and your role in the evolving open finance landscape.

   You should think of us as a partner who plans to be at the table for multiple chapters, not just the opening scene.

Common Mistakes to Avoid

• Optimizing for maximum check size over fit:

  Founders sometimes push for the largest possible check without considering whether it matches their stage, burn discipline, and market readiness. Oversized rounds can create pressure to chase short-term metrics or expand too quickly across regions.

  How to avoid it: Come into the conversation with a clear, written use-of-funds across 18–24 months and an honest assessment of your hiring and execution bandwidth. Ask us directly: “Given this plan, what check size do you think is healthy?”

• Treating follow-on as guaranteed or purely mechanical:

  Some teams assume follow-on is an entitlement, or that pro-rata will always be exercised regardless of thesis, governance, or execution. That can create misaligned expectations and unnecessary tension.

  How to avoid it: Early in the relationship, align on scenarios where we’d lean in (e.g., clear strategic progress amid a rough market) and where we might step back (e.g., persistent governance misalignment). We’re happy to have that conversation explicitly.

Real-World Example

A hypothetical example drawn from patterns we’ve seen: A team building a new finance infrastructure layer—API-first rails for on-chain settlement integrated with traditional institutions—approached us at Seed. They had a strong technical team, early pilots in Asia, and a credible path to Europe and North America, but very little proven revenue.

We led a $2.5M seed check within our $500K–$3M early-stage band, enough to give them ~24 months of runway to ship core infrastructure, secure initial institutional integrations, and build compliance muscle. More importantly, we worked with them on a framework for go-to-market: which institutions to prioritize, how to sequence geography, and how to balance on-chain purity with regulatory realities.

Eighteen months later, with real volume through their rails and growing interest from global partners—including several from our existing portfolio—we participated significantly in their Series A, alongside other investors. Our follow-on wasn’t automatic; it came after we revisited the core thesis: would this team play a foundational role in the open finance stack over the next decade?

By having calibrated the seed check size correctly and explicitly planning for follow-on reserves, the team avoided over-dilution, maintained strategic control, and signaled to the market that their earliest conviction investors still believed as the stakes got larger.

Pro Tip: When you talk to us, bring both a “today” deck and a “Series B vision” memo. Show how this round is a bridge between where you are and where you realistically want to be in 2–3 rounds. It makes the check-size discussion sharper and the follow-on logic more transparent on both sides.

Summary

For Fundamental Labs, check size is not a generic range; it is an expression of conviction about your role in the future of blockchain technology, digital infrastructure, and open finance networks. We typically invest between $500K and $50M+, matching our involvement to your stage—from early Layer 1 experiments and Web3 primitives to scaling global protocols and infrastructure. We reserve capital and attention for follow-on participation where the long-term thesis is compounding and where our continued partnership, network, and insight can meaningfully increase your odds of shaping mass adoption.

If you’re evaluating us for your round, the most useful conversation is not, “What’s the biggest check you can write?” but, “What is the right check size and follow-on plan for the future we’re trying to build together?”

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