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Overture VC

Los Angeles, California · Invests in US; North America; Europe · Website

Check size

$250K-$5M

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Pre-SeedSeedSeries AB2B SaaSDeveloper ToolsClimate & EnergyManufacturingClimate & Clean EnergyEnterprise SoftwareDeveloper Tools & Infrastructure

Thesis

Early-stage climate tech founders need more than capital—they need government relations expertise and regulatory navigation. We bridge venture capital with embedded public-sector strategy through Boundary Stone Partners, our government affairs firm co-founded by our team. We focus on sectors where policy is central: energy abundance, resilience, and clean industry transformation.

Likely not a fit for

Consumer-focused climate apps, pure hardware without software/services, companies that ignore or avoid government engagement

How they invest

Lead or follow
Usually leads
Typical decision
~2 weeks
Warm intro
Not required
Involvement
Advisor
Fund status
Actively deploying
Decision process
Partnership vote

Partners & team

7 contacts on file

SD

Shomik Dutta

Co-Founder & Managing Partner · Primary contact

LP

Leila Pirbay

Principal

BH

Brandon Hurlbut

Co-Founder

TM

Tamim Mourad

Co-Founder & Venture Partner

MO

Michael O'Neil

Co-Founder & Partner

AH

Allison Hinckley

Senior Principal

EM

Emma McDonagh

Principal

Portfolio

Antora EnergyClimate Clean Energy

Antora Energy is an American energy technology company that specializes in thermal energy storage, using solid carbon blocks to store energy as heat for industrial applications.

Bedrock EnergyClimate Clean Energy

Unlocking geothermal for any real estate in any location. Bedrock's novel technology makes geothermal borehole fields affordable, fast, and space-efficient to install, transforming the heating & cooling of buildings.

Alta TechnologiesManufacturing Industrial

Alta Technologies uses engineered proteins to separate rare earth elements and strategic metals from complex material streams with unmatched selectivity.

Blue EnergyClimate Clean Energy

Blue Energy de-risks nuclear construction through fixed-price contracting at fab yards and shipyards, enabling project finance.

Eion
FloodbaseInsurance

Floodbase is an end-to-end solution enabling insurance products for previously uncovered flood risk, providing parametric flood insurance that pays out based on the magnitude of flooding.

BurnbotClimate Clean Energy

BurnBot delivers scalable, precision fuels management to protect homes, infrastructure, and landscapes—before disaster strikes.

Crux ClimateClimate Clean Energy

Crux is the capital platform supercharging the clean economy by making capital markets more liquid, efficient, and intelligent.

Forum MobilityLogistics Supply Chain

Forum Mobility delivers turnkey zero-emission solutions to help freight carriers confidently electrify their fleets, providing charging depots, electric truck leasing, and innovative financing.

Applied CarbonClimate Clean Energy

Applied Carbon develops mobile technology that converts agricultural crop residues into biochar, enhancing soil health and sequestering carbon permanently.

BioSqueezeBiotech Life Sciences

BioSqueeze is a company specializing in biomineralization technology to address well integrity challenges in the oil and gas industry, providing innovative solutions from spud to plug.

Blumen SystemsEnterprise Software

Blumen Systems provides AI-powered solutions for infrastructure and permitting, helping developers and engineering firms automate workflows and manage regulatory compliance.

Recent activity

Overture VC in the news

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Research briefRead more
Overture VC Research Document Investment Thesis Overture VC is a specialized venture capital firm founded by former Obama White House and U.S. Department of Energy officials that bridges the startup world with government policy and support. The firm invests in early-stage climate tech startups where public policy is central to success—specifically in energy, artificial intelligence, resilience, and industrial transformation. The founding insight is that successful climate tech companies need more than capital; they need deep government relations expertise and understanding of the regulatory landscape. Every Overture portfolio company receives in-kind support from Boundary Stone Partners, a government affairs firm co-founded by Brandon Hurlbut (Overture's co-founder), which bundles venture capital with embedded public-sector strategy. This creates an unfair advantage for portfolio founders navigating federal, state, and municipal support programs, incentives, and compliance requirements. Sector and Investment Focus Overture identifies three primary investment categories: Energy Abundance - Helping the world meet staggering new energy needs for artificial intelligence, reindustrialization, and electrification with clean energy. Portfolio includes thermal batteries (Antora), geothermal (Bedrock), rare earth supply chains (Alta), advanced reactors (Blue Energy), grid management (GridCARE), and critical minerals recovery (Chemfinity, Endolith). Resilience - Adapting and hardening infrastructure and businesses to extreme weather risks. Portfolio includes wildfire prevention (BurnBot, Earth Force), flood risk insurance (Floodbase), and biomineralization for methane leaks (BioSqueeze). Clean Industry - Critical minerals, advanced manufacturing, clean transportation, logistics, and modern industrial infrastructure. Portfolio includes carbon materials (Dexmat), carbon removal (Eion, Applied Carbon, Graphyte), robotics for recycling (Glacier), mining tech (Endolith), waste management (Glacier, Endolith), and supply chain optimization (Blumen, Crux). Stage Focus and Check Size Overture invests in Pre-Seed, Seed, and Series A companies with an average check size of $1.5M . The fund is actively deploying from Fund II and shows strong conviction in early-stage founders with exceptional technology. Recent press coverage indicates participation in: Pre-Seed: $250K-$1M (Alta, various stealth companies) Seed: $1M-$5M (most common, including Floodbase, Forum Mobility, Bedrock Energy early rounds) Series A: $5M-$50M (follow-ons and larger rounds like Harbinger, Glacier) Lead Tendency Overture exhibits a "leads" tendency. The firm is listed as lead investor or co-lead in most major announcements: Led seed rounds in Floodbase, Crux (Series A co-lead with a16z), BurnBot (Series A) Participated as anchor investor in rounds for Xage Security, Moment Energy, GridCARE, Endolith The firm prefers lead positions and often co-leads, particularly with strategic partners like Breakthrough Energy Ventures and other climate-focused funds. Recent Activity and Fund Status Fund Status: Actively Deploying Overture closed Fund I at $60M in February 2024 and is now deploying Fund II with strong momentum. Recent investment activity (2024-2025) shows consistent deal flow and follow-on investments across multiple stages. Notable Recent Investments: December 2025: GridCARE $13.5M seed round (led by Xora, Overture participation) November 2025: Harbinger $160M series C with FedEx orders October 2025: Glacier Series A ($16M, Amazon-backed) September 2025: Overture featured for climate tech policy expertise August 2025: Multiple portfolio follow-ons (Observability.io, Moment Energy) May 2025: GridCARE $13.5M oversubscribed seed April 2025: Glacier $16M Series A (Amazon-backed) March 2025: Eion $33M purchase agreements via Frontier February 2026: Eion acquired by Terradot (exit) Last Known Activity: February 2026 The firm is deploying capital at a healthy pace with 20+ portfolio companies across multiple stages. Several portfolio companies have achieved meaningful traction and customer validation. Portfolio Highlights Notable Companies: Antora Energy - Thermal battery for industrial heat, $50M+ raised, factory opening Bedrock Energy - Geothermal drilling, $8.5M seed, ARPA-E funding Eion - Carbon removal via enhanced rock weathering, $33M purchase agreements, acquired by Terradot Floodbase - Flood risk monitoring, $12M Series A, FEMA selection Glacier - AI recycling robots, $16M Series A, Amazon-backed BurnBot - Wildfire prevention, $20M Series A Crux - Carbon credit marketplace, a16z-led Series A Harbinger - Medium-duty EVs, $100M+ Series B, Fortune 500 customers Forum Mobility - Fleet electrification, $400M CBRE JV Xage Security - Critical infrastructure cybersecurity, $30M Series B Team Background Shomik Dutta (Managing Partner): 20 years venture capital, climate, government. Former White House aide, Higher Ground Labs founder, $500M+ solar projects. Brandon Hurlbut (Co-Founder): DOE Chief of Staff, White House energy/environment liaison, managed $90B clean energy investments. Co-founder Boundary Stone Partners. Team includes government policy experts, energy sector veterans, and deep technology investors with meaningful prior exits. Geographic Focus Primary: United States (Los Angeles HQ, strong DC presence) Secondary: North America and Europe Selective: Japan, South Korea for critical manufacturing Decision Making Partnership-based with Shomik and Brandon driving major decisions. Typical timeline 2-4 weeks for warm intros. The firm combines conviction in founders with deep policy expertise, willing to lead in specialized climate tech sectors where regulatory/government procurement is core to business model.

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