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Great Oaks Venture Capital

greatoaksvc.com · New York, NY

“Great Oaks partners with ambitious founders at the earliest stage of company building, focused on supporting founders building enduring businesses across the United States, with the majority of time spent on Software, Healthcare, Financial Services, Marketplaces, and Enterprise.”

$50K – $500K
Check Size
01Investment Thesis

Great Oaks partners with ambitious founders at the earliest stage of company building, focused on supporting founders building enduring businesses across the United States, with the majority of time spent on Software, Healthcare, Financial Services, Marketplaces, and Enterprise.

Exclusion Criteria

No sectors are explicitly excluded; as a generalist, small-check ($50K-$500K) seed investor, Great Oaks is less suited to capital-intensive hardware or biotech plays that require a large anchor check.

02Investment Team
AB
Andy Boszhardt
Founder & Managing Partner
HM
Henry McNamara
General Partner
SO
Stuart O'Keeffe
General Partner
RS
Raj Sandhu
General Partner
03F4 Research Brief

Great Oaks Venture Capital Research

Investment Thesis

Great Oaks Venture Capital is a New York-based seed and early-stage venture firm that partners with ambitious founders at the earliest moments of company building. Founded in the mid-2000s, the firm has spent nearly two decades writing small initial checks as one of the first institutional investors into pre-traction and early-traction startups. Great Oaks is explicitly a generalist: it does not confine itself to a single vertical, but the partners concentrate the majority of their time on five areas — Software, Healthcare, Financial Services, Marketplaces, and Enterprise. The firm's public positioning emphasizes supporting founders building "enduring businesses" rather than chasing narrow thematic trends, and its nearly 50-company active portfolio bears this out, spanning fintech, digital health, developer tools, consumer, marketplaces, edtech, biotech, and applied AI/robotics.

Stage Focus

Great Oaks invests at Pre-Seed, Seed, and Series A, with the bulk of activity concentrated at Pre-Seed and Seed. The firm positions itself as one of the most active seed-stage investors based in New York and frequently serves as one of the first institutional checks into a company.

Check Size

The firm writes checks between $50,000 and $500,000 per the site's own disclosure. This is a small-check strategy consistent with a fund that prioritizes portfolio breadth and diversification over concentrated ownership, and it implies Great Oaks typically participates in syndicates alongside other seed investors and angels rather than anchoring a round on its own.

Lead Tendency

Not stated on the site. Given the check-size range ($50K-$500K), Great Oaks more plausibly plays a syndicate/participant role in most rounds rather than leading, but this could not be independently confirmed from public sources and is marked unknown.

Recent Activity

Public deal-tracking sources (Tracxn) indicate no newly announced Great Oaks investments so far in 2026, which combined with the firm's own homepage leaning on portfolio-company milestones rather than new-deal announcements suggests the fund may be in a slower deployment phase or between active fundraising cycles; this is marked as fund status "unknown" rather than asserted. What is confirmed is a run of strong portfolio-company outcomes surfaced directly on the firm's own site: construction-tech portfolio company EquipmentShare completed a $747M U.S. IPO on Nasdaq (ticker EQPT) in January 2026; food-supply-chain portfolio company GrubMarket confidentially filed for a U.S. IPO at a reported $4.5B valuation in mid-2026; clean-energy retail portfolio company Branch Energy raised a $33M Series B in September 2026 to expand outside its home Texas market; and AI reading/dictation portfolio company Speechify shipped a Windows app using on-device local models for transcription and dictation in March 2026.

Portfolio Highlights

The active portfolio spans roughly 50 companies. Notable current holdings include unicorn-scale outcomes GrubMarket ($4.5B, food supply chain, IPO-track) and Houzz ($4B, home-design marketplace), fast-growing fintech names Acorns, Human Interest, Cardless, and Vise, and a deep bench of digital-health companies (Maven Clinic, Virta Health, Ribbon Health, Oula, Allara Health, Picnic Health). On the historical side, two of the firm's advisors — Nat Turner and Zach Weinberg — are both former co-founders and CEOs of two earlier Great Oaks portfolio companies that produced marquee exits: Flatiron Health (acquired by Roche) and Invite Media (acquired by Google); both individuals remain active as prolific angel investors and Great Oaks advisors today.

Team

Great Oaks describes itself as "a small collegial team." Based on public team-page information, the investing partnership consists of:

  • Andy Boszhardt — Founder & Managing Partner
  • Henry McNamara — General Partner
  • Stuart O'Keeffe — General Partner
  • Raj Sandhu — General Partner (per external profiles, has invested in 100+ companies with 25+ exits and multiple unicorns)

The firm also maintains a network of operator-advisors, including Bradford Benz (Benz Capital / ex-TPG), Dan Reich (Troops, Tula Skincare, DIBS Beauty), James Gutierrez (Insikt, Oportun), John Philosophos (Dillon Kane Group), Ken Landis (Bobbi Brown Cosmetics), Nat Turner and Zach Weinberg (Flatiron Health, Invite Media), and Randall Burkert (Mercer + Bond Capital).

Decision Process

Not formally disclosed. Given a four-person General Partner team and the firm's description of itself as a small, collegial partnership, decisions most likely run through a lightweight partnership process rather than a formal investment committee, though this is an inference rather than a confirmed fact.

Founder Preferences

The firm's own language — "ambitious founders" building "enduring businesses" — points toward a preference for founders with long-term, durable-business orientation rather than pure growth-at-all-costs plays. The portfolio's breadth across sectors suggests the team backs strong technical and domain-expert founders across categories rather than favoring one founder archetype.

Geographic Focus

Great Oaks is headquartered in New York (667 Madison Avenue) and states it invests in founders "across the United States." The portfolio composition (companies headquartered coast-to-coast, from NYC fintech to Bay Area health-tech and robotics) is consistent with a nationwide, US-focused mandate rather than a regional one.

04Selected Portfolio
Biotech & Life Sciences
Verge Genomics·Output Biosciences
Climate & Sustainability
HowGood
Consumer Apps & Social
Rowan·Fetch
E-commerce & Marketplaces
LineLeap·GrubMarket·Joor·Houzz·Sundays·Ibotta·Away Travel
EdTech
Learneo
Enterprise Software
Ternary·ReadMe.io·Nylas·mightynetworks.com·Knotch·Workrise·Motivo·Terzo Technologies·Speechify·SingleStore
Fintech & Payments
Passthrough·Human Interest·Cardless·Astra·Acorns·Vise
Gaming
Triumph Arcade
Healthcare & Digital Health
Virta Health·Ribbon Health·Oula Health·PicnicHealth·Maven Clinic·Foodsmart·Meetfellow·Allara Health
HR Tech & Future of Work
Parallel Learning
Insurance
Quinn
Legal & Regtech
Priori
Logistics & Supply Chain
Kargo·EquipmentShare
Marketing & Adtech
Telly·Kevel·Peachy·Affinity
Real Estate & PropTech
Roofstock
Robotics & Automation
Built Robotics
Other
Hungryroot
Open the full portfolio→
05Recent Updates

Fresh signals from public announcements, essays, and portfolio activity.

See full activity (6) →
Former portfolio company Invite Media, co-founded by Great Oaks advisors Nat Turner and Zach Weinberg, was acquired by Google.
EXIT·greatoaksvc.com
Added recently
Former portfolio company Flatiron Health, co-founded by Great Oaks advisors Nat Turner and Zach Weinberg, was acquired by Roche.
EXIT·greatoaksvc.com
Added recently
Portfolio company Branch Energy raised a $33M Series B to expand its direct-to-consumer green energy platform outside Texas.
MILESTONE·axios.com
SEP 15, 2026
Portfolio company GrubMarket confidentially filed for a U.S. IPO at a reported $4.5B valuation.
MILESTONE·pymnts.com+1
JUL 2026
Portfolio company Speechify launched a Windows app that uses local on-device models for transcription and dictation.
MILESTONE·techcrunch.com
MAR 31, 2026
06Frequent co-investors
NP
Nyca Partners
Both backed 3 of the same companies
Roofstock, Acorns, Astra
AC
Activant Capital
Both backed 2 of the same companies
Cardless, Kargo
BP
BFG Partners
Both backed 2 of the same companies
Ibotta, Quinn
CV
Citi Ventures
Both backed 2 of the same companies
Roofstock, Nylas
DR
Dorm Room Fund
Both backed 2 of the same companies
Ribbon Health, Vise
Find the investors for your round→
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Quick Reference
Check Size
$50K – $500K
Stages
Pre-Seed · Seed · Series A
Decision
Partnership
Location
New York, NY
Sector Focus
Fintech & PaymentsConsumer Apps & SocialE-Commerce & MarketplacesBiotech & Life SciencesEdTechRobotics & AutomationEnterprise SoftwareDeveloper Tools & InfrastructureHealthcare & Digital Health
Models
B2B SaaSMarketplacesConsumer AppsVertical SaaS
Technology
AI/MLHealthcare TechnologyFintech
See all Fintech & Payments investors →See all Consumer Apps & Social investors →See all E-commerce & Marketplaces investors →
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Focus Areas
Fintech & PaymentsConsumer Apps & SocialE-Commerce & MarketplacesBiotech & Life SciencesEdTechRobotics & AutomationEnterprise SoftwareDeveloper Tools & InfrastructureHealthcare & Digital Health

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F4 Intelligence Report · Last Researched September 19, 2026F4 Research Engine