C40 Cities Climate Leadership Group Inc logo

C40 Cities Climate Leadership Group Inc

Public charity · Grantmaker New York, NY EIN: 90-0634376 Website

C40 IS A GLOBAL NETWORK OF NEARLY 100 MAYORS OF THE WORLD'S LEADING CITIES THAT take action to address environmental and climate change issues. FOR ADDITIONAL INFORMATION.

C40 Cities Climate Leadership Group Inc at a glance

In short: C40 Cities Climate Leadership Group Inc gave $518K across 2 grants in 2024 (avg $259K), mostly in District of Columbia. Source: 2024 IRS Form 990.

Annual giving (2024)
$518,027
+0.9% vs 2023
Grants made (2024)
2
-33.3% vs 2023
Average grant
$259,014
+51.4% vs 2023
Median grant
$259,014
Total assets
$43,927,306
+13.9% vs 2023
Primary geography
District of Columbia (77% of itemized 2024 grant dollars)
Latest 990 filing
Form 990, 2024 View filing

Data from IRS Form 990, 2024; updated September 2026.

Who C40 Cities Climate Leadership Group Inc funds

How this funder distributes its grants

Top Recipients

Top 2 recipients in 2024

World Resources Institute: $400KWorld Resources Institute$400KUrban Sustainability Directors Network: $118KUrban Sustainability DirectorsNetwork$118K

The largest 2024 recipient was World Resources Institute ($400K). Together the top 2 received $518K.

Grant Size Distribution

9 grants across all recorded years

1<$50K1$50–100K5$100–250K2$250–500K$500K–1M$1–5M$5M+

The most common grant size was in the $100–250K range: 5 grants of 9 (56%).

Geographic Focus

Where this funder awards grants

Grant Distribution by State

6states

Share of 2024 grant dollars across all 2 itemized grants.

Cities

WashingtonBerkeleyBoulderCollege ParkNew YorkPort Washington

How C40 Cities Climate Leadership Group Inc gives

  • Giving grew 159% from 2021 to 2024. Method

From the foundation's IRS Form 990 filings. Methodology.

Giving History

Giving Over Time

Total grant dollars and number of grants per year

$0$200K$400K$600K0 grants2020 2 grants2021 2 grants2022 3 grants2023 2 grants2024

From 2021 to 2024, annual grant giving ranged from $200K (2021) to $518K (2024). In 2024 it made 2 grants totaling $518K.

Grants by year

Grant recipients and amounts by year

RecipientPurposeAmount
World Resources Institute Washington, DCSupport and Collaborating with SCALE partners$400,000
Urban Sustainability Directors Network Port Washington, WIto achieve greater influence and outcomes for local governments$118,027
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Financial History

Multi-year comparison from IRS filings

Figures from IRS filings, by filing year
Filing yearTotal AssetsRevenueExpensesGrants paidGrantsNet Investment Income
2024$43,927,306$73,614,205$69,615,007$518,0272$149,635
2023$38,571,730$47,220,199$61,416,603$513,2193$124,948
2022$52,177,936$54,380,631$38,765,181$406,5722$12,525
2021$35,030,897$45,171,282$33,981,598$200,0002$4,898
2020$23,610,427$32,632,140$30,812,024———

About C40 Cities Climate Leadership Group Inc

Based on IRS filings

C40 Cities Climate Leadership Group Inc is a public charity focused on Environment & Animals, based in New York, NY. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $43.9M in total assets. In 2024, it awarded 2 grants totaling $518K. Net investment income was $150K.

Leadership & Key People

Officers and directors from IRS filings

C40 Cities Climate Leadership Group Inc is led by Mark Watts, Executive Director on every filing since 2020; 8 of 18 officers listed in 2024 are compensated.

Officers on the 2024 filing

  • Mark Watts

    Executive Director

    On filings since 2020

    40 hrs/week

    $226K (2020) → $244K (2024)

  • Michael R. Bloomberg

    President & Director

    On filings since 2020

    0.1 hrs/week

    No compensation reported

  • Juliette Carter

    Managing Director of Corp Services

    Director of Corporate Serv → Managing Director of Corp Services, 2023

    On filings since 2020

    32 hrs/week

    $123K (2020) → $129K (2024)

  • Aditi Maheshwari

    Managing Director of Climate Action Implementation

    New on the 2024 filing

    40 hrs/week

    $207K (2024)

  • Zachary Tofias

    Programme Director, Food & Waste

    Programme Director Food & Waste → Programme Director, Food & Waste, 2024

    On filings since 2020

    40 hrs/week

    $124K (2020) → $144K (2024)

  • Iyad Kheirbek

    Programme Director & Air Quality

    Programme Director Air Quality → Program Director, Air Quality in Climate Solutions & Netwo, 2023

    Program Director, Air Quality in Climate Solutions & Netwo → Programme Director & Air Quality, 2024

    On filings since 2021

    40 hrs/week

    $126K (2021) → $166K (2024)

  • Laura Jay

    Regional Director North America

    Regional Director & North America → Regional Director North America, 2024

    On filings since 2023

    40 hrs/week

    $147K (2023) → $150K (2024)

  • Julia Ciardullo

    Director & Multilevel Partnerships | C40 X Gcom Joint Program

    New on the 2024 filing

    40 hrs/week

    $142K (2024)

  • Antha Williams

    Treasurer & Director

    On filings since 2020

    0.1 hrs/week

    No compensation reported

  • Bruce Lindsey

    Secretary & Director

    Secretary → Secretary & Director, 2022

    On filings since 2020

    0.1 hrs/week

    No compensation reported

  • Carolina Urrutia

    Director

    On filings since 2020

    0.1 hrs/week

    No compensation reported

  • Jesper Nygard

    Director

    On filings since 2020

    0.1 hrs/week

    No compensation reported

  • Shirley Rodrigues

    Vice President & Director

    Director → Vice President & Director, 2022

    On filings since 2020

    0.1 hrs/week

    No compensation reported

  • Jennifer Semakula Musisi

    Director

    On filings since 2021

    0.1 hrs/week

    No compensation reported

  • Sri Haryati

    Director

    On filings since 2022

    0.1 hrs/week

    No compensation reported

  • Hongpeng Lei

    Director

    On filings since 2023

    0.1 hrs/week

    No compensation reported

  • Maria Vittoria Beria

    Director

    On filings since 2023

    0.1 hrs/week

    No compensation reported

  • Kevin Austin

    Deputy Executive Director

    Deputy Executive Director → Deputy Excutive Director, 2023

    Deputy Excutive Director → Deputy Executive Director, 2024

    On filings since 2020

    40 hrs/week

    $195K (2020) → $208K (2024)

Former officers (13)
  • Former: Hastings Chikoko (2020–2023) — Regional Director of Africa
  • Former: Justin Johnson (2020–2023) — Director
  • Former: Milag San Jose-Ballesteros (2023) — Reg Director for East, Se Asia & Oceania
  • Former: Andrew Deacon (2022) — Director of Strategy & Operations
  • Former: Anna Beech (2022) — Managing Director, Governor & Executive Engagement
  • Former: Emily Russell (2022) — Director of Development
  • Former: Lamia Senousi (2022) — Managing Director, Committee & Events
  • Former: Vittoria Beria (2022) — Director
  • Former: Ana Guerrero (2020–2021) — Director
  • Former: David Miller (2020–2021) — Director of Intl. Diplomacy
  • Former: Josh Alpert (2020–2021) — Director of Special Projects
  • Former: Krish Kumar (2020–2021) — Director
  • Former: Jared Pruzan (2020) — Head of Knowledge Management

Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.

Compensation Overview

From 2024 IRS filing

Mark Watts — Executive Director: $244KMark WattsExecutive Director$244KKevin Austin — Deputy Executive Director: $208KKevin AustinDeputy Executive Director$208KAditi Maheshwari — Managing Director of Climate Action Implementation: $207KAditi MaheshwariManaging Director of Climate…$207KIyad Kheirbek — Programme Director, Air Quality: $166KIyad KheirbekProgramme Director, Air Quality$166KLaura Jay — Regional Director North America: $150KLaura JayRegional Director North America$150KZachary Tofias — Programme Director, Food and Waste: $144KZachary TofiasProgramme Director, Food and…$144KJulia Ciardullo — Director, Multilevel Partnerships | C40 x GCoM Joint Program: $142KJulia CiardulloDirector, Multilevel…$142KJuliette Carter — Managing Director of Corp Services: $129KJuliette CarterManaging Director of Corp…$129K

The highest reported compensation on the 2024 filing was $244K, to Mark Watts (Executive Director). 8 officers or directors reported compensation on that filing.

Frequently asked questions about C40 Cities Climate Leadership Group Inc

How much does C40 Cities Climate Leadership Group Inc give each year?

C40 Cities Climate Leadership Group Inc gave $518K across 2 grants in 2024, according to its 2024 IRS Form 990. In 2023 it gave $513K across 3 grants.

How large is C40 Cities Climate Leadership Group Inc?

C40 Cities Climate Leadership Group Inc reported $43.9M in total assets on its 2024 IRS Form 990. Its revenue that year was $73.6M.

What is C40 Cities Climate Leadership Group Inc?

C40 Cities Climate Leadership Group Inc is a public charity focused on Environment & Animals, based in New York, NY. It holds $43.9M in total assets as of 2024.

Where does C40 Cities Climate Leadership Group Inc operate?

C40 Cities Climate Leadership Group Inc has awarded grants in California, Colorado, District of Columbia, Maryland, New York, Wisconsin.

What is C40 Cities Climate Leadership Group Inc's EIN?

C40 Cities Climate Leadership Group Inc's EIN (Employer Identification Number) is 90-0634376. IRS Form 990 filing data is available on this page for 2020–2024.

Data last updated September 2026. Sourced from IRS Form 990 filings.

Data update history

(5)

When this profile's IRS filing data changed on Grantable

  1. Updated Form 990 for fiscal year 2021 (received by the IRS November 3, 2022)
  2. Updated Form 990 for fiscal year 2022 (received by the IRS November 14, 2023)
  3. Updated Form 990 for fiscal year 2023 (received by the IRS November 14, 2024)
  4. Updated Form 990 for fiscal year 2024 (received by the IRS November 14, 2025)
  5. IRS filings on file for fiscal years 2020–2024

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The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open

Figures come from C40 Cities Climate Leadership Group Inc's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.

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