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Grantham Foundation

53 State Street, 33rd Floor, Boston, MA, 02109, United States

Overview

Supports global environmental health and climate change communication.

Founded

1997

Deals ยท 12mo

8

Links

WebsiteLinkedIn

Stage focus

Seed
Series A

Geographic focus

United States

Sector focus

Environmental Consulting
Health Care
Natural Resources

Investment portfolio

40rounds
NAMEDATESIZE
Princeton Critical Minerals
Aug 2026Participated
$16 MSeries A
Quercus Biosolutions
Jul 2026Participated
$5 MSeed
Hephae Energy Technology
Jul 2026Participated
$18 MSeries A
Via Separations
Apr 2026Participated
$36 MOther Equity
V-Glass
Mar 2026Led
$4 MSeed
GTO Technologies
Jan 2026Led
$3 MSeed
Biocentis
Nov 2025Led
$13 MSeed
Flux XII
Nov 2025Led
$4 MSeed
Rodatherm
Sep 2025Participated
$38 MSeries A
InventWood
May 2025Led
$15 MSeries A
Vema Hydrogen
Feb 2025Participated
$13 MSeed
Carbon Ridge
Oct 2024Participated
$10 MOther Equity
Princeton Critical Minerals
Aug 2026Participated
$16 MSeries A
Quercus Biosolutions
Jul 2026Participated
$5 MSeed
Hephae Energy Technology
Jul 2026Participated
$18 MSeries A
Via Separations
Apr 2026Participated
$36 MOther Equity
V-Glass
Mar 2026Led
$4 MSeed
GTO Technologies
Jan 2026Led
$3 MSeed
Biocentis
Nov 2025Led
$13 MSeed
Flux XII
Nov 2025Led
$4 MSeed
Rodatherm
Sep 2025Participated
$38 MSeries A
InventWood
May 2025Led
$15 MSeries A
Vema Hydrogen
Feb 2025Participated
$13 MSeed
Carbon Ridge
Oct 2024Participated
$10 MOther Equity
40
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Insights

Time horizon

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Deal Distribution

Grantham Foundation: 40 funding rounds are recorded in the selected participation categories.All available history.
Grantham Foundation: 40 funding rounds are recorded in the selected participation categories. All available history
Round typeLed dealsParticipated deals
Seed97
Series A213
Series B02
Series C+01
Other Equity15

Monthly Deal Activity

Grantham Foundation: 40 deals are recorded across 87 months.All available history.
Grantham Foundation: 40 deals are recorded across 87 months. All available history
MonthDeals
Aug '191
Sep '190
Oct '190
Nov '190
Dec '190
Jan '200
Feb '201
Mar '200
Apr '200
May '200
Jun '200
Jul '200
Aug '200
Sep '200
Oct '200
Nov '200
Dec '200
Jan '210
Feb '210
Mar '210
Apr '210
May '210
Jun '210
Jul '210
Aug '211
Sep '210
Oct '211
Nov '210
Dec '210
Jan '221
Feb '220
Mar '220
Apr '220
May '221
Jun '220
Jul '221
Aug '221
Sep '221
Oct '220
Nov '220
Dec '220
Jan '231
Feb '232
Mar '231
Apr '232
May '231
Jun '230
Jul '230
Aug '231
Sep '230
Oct '232
Nov '230
Dec '230
Jan '240
Feb '241
Mar '240
Apr '241
May '241
Jun '241
Jul '242
Aug '242
Sep '240
Oct '242
Nov '240
Dec '240
Jan '250
Feb '251
Mar '250
Apr '250
May '251
Jun '250
Jul '250
Aug '250
Sep '251
Oct '250
Nov '252
Dec '250
Jan '261
Feb '260
Mar '261
Apr '261
May '260
Jun '260
Jul '262
Aug '261
Sep '260
Oct '260

Sector Breakdown

Grantham Foundation: Clean Energy & Sustainability is the largest displayed sector by deal count (24 deals).All available history.

A deal can appear in multiple sectors, so sector totals may overlap. Capital represents disclosed total round sizes, not fund cheque sizes.

Grantham Foundation: Clean Energy & Sustainability is the largest displayed sector by deal count (24 deals). All available history
SectorDeals
Clean Energy & Sustainability24
Health & Life Sciences10
Space & Frontier Tech9
Food & Agriculture8
Manufacturing6
Professional Services4
Networks, Cloud & Communication3
Transportation & Logistics3
Real Estate & Construction2
Consumer & Lifestyle2
Fintech1
AI & Machine Learning1
Data, Analytics & IT1

Deal Size Distribution

Grantham Foundation: 40 rounds have a disclosed size in the displayed size bands.All available history.

Undisclosed round sizes are excluded. Capital represents total round sizes, not fund cheque sizes.

Grantham Foundation: 40 rounds have a disclosed size in the displayed size bands. All available history
Round size band (USD)Deals
<$5M7
$5M-$10M12
$10M-$25M13
$25M-$50M6
$50M-$100M1
$100M-$250M1
$250M-$500M0
$500M-$1B0
$1B+0

Deals By Geography

Grantham Foundation: United States has the largest recorded deal count among the displayed regions (32 deals).All available history.

Top 7 of 7 regions; European countries are grouped as Europe.

Grantham Foundation: United States has the largest recorded deal count among the displayed regions (32 deals). All available history
RegionDeals
United States32
Europe3
Faroe Islands1
Canada1
Israel1
Saudi Arabia1
Australia1
Grantham Foundation: 20 co-investors are shown, with Breakthrough Energy Ventures sharing 4 recorded deals.All available history.

Co-Investors

Bubble size = shared deals

Click a bubble to open that fund in a new tab.

Shows up to 20 co-investors ranked by shared deals. Deals may be shared with multiple funds, so rows overlap. Capital is total round size, not fund cheque size.

Grantham Foundation: 20 co-investors are shown, with Breakthrough Energy Ventures sharing 4 recorded deals. All available history
Co-investorShared deals
Breakthrough Energy Ventures4
Congruent Ventures4
Evok Innovations3
Plug and Play Ventures3
Anglo American2
Baruch Future Ventures2
Berge Bulk2
Builders Vision2
Capricorn Investment Group2
Climate Capital2
Elemental Excelerator2
Fall Line Capital2
First In Ventures2
Helmerich & Payne2
Incite2
Katapult Ocean2
Lowercarbon Capital2
MCJ Collective2
MUUS Climate Partners2
Prelude Ventures2

Investment Strategy

Grantham Foundation: Led accounts for 30% and participating for 70% of round participation.All available history.
Grantham Foundation: Led accounts for 30% and participating for 70% of round participation. All available history
CategoryDeals (count)Share (%)
Led1230%
Participating2870%
Grantham Foundation: Single-lead accounts for 83% and co-led for 17% of lead dynamics.All available history.
Grantham Foundation: Single-lead accounts for 83% and co-led for 17% of lead dynamics. All available history
CategoryDeals (count)Share (%)
Single-lead1083%
Co-led217%

Team

Eric Smith

Investment Officer

Hannelore Grantham

Co-Founder

Jeremy Grantham

Co-Founder

Josh Agenbroad

Co-Founder & Industry Sector Lead

Kevin Tidwell

Managing Director

Ramsay Ravenel

President and CIO

Sam Lefkofsky

Analyst