Primary Venture Partners closed $625M Fund V in February 2026 — the largest NYC-exclusive seed fund in history. It anchors a distinctly NYC seed-stage story.

What Primary does

• NYC-only: Every portfolio company is NYC-headquartered or has major NYC presence.
• Seed and pre-Series A: $1M–$7M initial checks.
• Data-driven diligence: Heavy use of cohort data, customer calls, and benchmarks.
• Operating team support: Functional experts in talent, sales, marketing, finance support portfolio companies.

Portfolio themes

1. B2B SaaS — vertical and horizontal.
2. Fintech — especially embedded finance + B2B treasury.
3. Marketplaces — NYC’s dense demand + supply makes marketplace ecosystems easier to bootstrap.
4. Consumer — select, capital-efficient.
5. Health — workflow AI, specialty care enablement.

Notable portfolio companies

• Alma — mental health marketplace.
• Ollie — pet food D2C.
• Mirror — acquired by Lululemon.
• Jet.com — acquired by Walmart.
• Chief — professional network for women executives.

Why a $625M seed fund?

1. Fewer, larger seed rounds: NYC seed checks have grown to $3–7M — larger funds write these more comfortably.
2. Reserve discipline: $625M lets Primary reserve heavily for follow-on in winners.
3. Market share defense: Primary protects its NYC seed lead against national funds entering the city.
4. Category expansion: Additional partners enable sector-specific coverage.

Primary’s 2026 thesis

• NYC’s applied AI edge: Backing AI startups that sell into NYC enterprise buyers (finance, health, media).
• Embedded finance: Fintech infrastructure layered into vertical SaaS.
• Consumer loyalty and commerce tooling: Retail tech evolution.
• Marketplace defensibility: Network-effect-driven businesses.

How founders work with Primary

1. Warm intro preferred: Strong pattern matching on founder background.
2. Diligence-heavy: Expect customer calls and data requests.
3. Operating support: Real, not cosmetic — post-investment engagement is high.
4. Board seat standard: Primary typically takes a seat at lead-check rounds.

Practical takeaway

• Founders: Primary is arguably the most important seed investor for NYC-based founders. Build relationships before fundraise.
• Investors: Co-investing alongside Primary is a strong positive signal.
• LPs: Primary’s Fund V is oversubscribed; access may be limited to incumbent LPs.

Sources

1. TechCrunch Primary Fund V coverage (Feb 2026): https://techcrunch.com/2026/02/10/primary-ventures-raises-massive-625m-fund-v-to-focus-on-seed-investing
2. Primary Venture Partners: https://www.primary.vc/