# EDGAR Filing Document

**Accession Number:** 0000877232
**File Stem:** 0001193125-25-232741
**Filing Date:** 2025-10
**Character Count:** 183010
**Document Hash:** 569a667df3876c3292936b9804bada18
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-232741.hdr.sgml**: 20251007

**ACCESSION NUMBER**: 0001193125-25-232741

**CONFORMED SUBMISSION TYPE**: N-CSR

**PUBLIC DOCUMENT COUNT**: 40

**CONFORMED PERIOD OF REPORT**: 20250731

**FILED AS OF DATE**: 20251007

**DATE AS OF CHANGE**: 20251007

**EFFECTIVENESS DATE**: 20251007

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GREEN CENTURY FUNDS
- **CENTRAL INDEX KEY:** 0000877232

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0731

**FILING VALUES:**
- **FORM TYPE:** N-CSR
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-06351
- **FILM NUMBER:** 251378361

**BUSINESS ADDRESS:**
- **STREET 1:** 114 STATE STREET
- **STREET 2:** SUITE 200
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02109
- **BUSINESS PHONE:** 617-482-0800

**MAIL ADDRESS:**
- **STREET 1:** C/O UMB FUND SERVICES
- **STREET 2:** 803 WEST MICHIGAN STREET SUITE A
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53233

## Series and Classes Contracts Data

### GREEN CENTURY BALANCED FUND (Series ID: S000007714)

| Class ID   | Class Name                | Ticker Symbol   |
|:---|:---|:---|
| C000020964 | Individual Investor Class | GCBLX           |
| C000225233 | Institutional Class       | GCBUX           |

### GREEN CENTURY EQUITY FUND (Series ID: S000007715)

| Class ID   | Class Name                | Ticker Symbol   |
|:---|:---|:---|
| C000020965 | Individual Investor Class | GCEQX           |
| C000202490 | Institutional Class       | GCEUX           |

### Green Century MSCI International Index Fund (Series ID: S000055094)

| Class ID   | Class Name                | Ticker Symbol   |
|:---|:---|:---|
| C000173337 | Individual Investor Class | GCINX           |
| C000173338 | Institutional Class       | GCIFX           |

?xml version='1.0' encoding='ASCII'? N-CSR

#### UNITED STATES

#### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

------

#### FORM N-CSR

------

#### CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES

#### Investment Company Act file number

#### 811-06351

#### Green Century Funds
(Exact name of registrant as specified in charter)

------

114 State Street

Suite 200

Boston, MA 02109

(Address of principal executive offices)

Green Century Capital Management, Inc.

114 State Street

Suite 200

Boston, MA 02109

(Name and address of agent for service)

#### Registrant's telephone number, including area code:
&nbsp;&nbsp;&nbsp;&nbsp;(617) 482-0800

#### Date of fiscal year end:

#### July 31

#### Date of reporting period:

#### July 31, 2025
 **Item 1. Report to Stockholders.**

(a) The following is a copy of the report transmitted to shareholders pursuant to Rule 30e-1 under the Investment Company Act of 1940 (17 CFR 270.30e-1).

Green Century Balanced Fund

Individual Investor Class/GCBLX

![Green Century TSR Logo Cover 1](g95172images_307.jpg)

#### Annual Shareholder Report \| July 31, 2025
*For information on the Green Century Funds<sup>®</sup>, call 1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit *www.greencentury.com*.*

#### What were the Fund costs for the last year?
*(Based on a hypothetical $10,000 investment)*

The below table explains the costs that you would have paid within the reporting period.

---

| | | |
|:---|:---|:---|
| Fund (Class) | Costs of a $10,000 investment | Costs paid as a percentage<br>of a $10,000 investment |
| Green Century Balanced Fund<br>(Individual Investor Class/GCBLX) | $149 | 1.46% |

---

#### Management's Discussion of Fund Performance

#### How did the Fund perform last year? What affected the Fund's performance?
The Green Century Balanced Fund seeks capital growth and income from a diversified portfolio of stocks and bonds that meet Green Century's standards for corporate environmental responsibility. We seek to achieve the fund's investment objective by investing between 55% to 70% of the fund's net assets in value in multi-capitalization stocks and 30% to 45% in investment-grade quality bonds.

The Fund's investments focus on companies with strong environmental, social, and governance practices that may enhance corporate profitability and reduce certain types of risks. The Fund specifically avoids risks associated with exposure to fossil fuels, including traditional fossil-fuel based energy and utility companies. The Fund focuses on companies with strong balance sheets, strategic leadership in their products and markets, and strong environmental, social, and governance policies; these companies have greater financial flexibility to navigate choppy and volatile economic conditions.

In line with its environmental mandate, the Fund had exposure to what Green Century considers environmental leaders in a number of industries including Healthy Living, Capital Goods, and Transportation. The Fund has broad exposure to information technology, health care, financial, consumer, and industrial companies.

In addition to its equity exposure to environmental leaders, the Fund invests in designated Green Bonds and designated Social Impact Bonds. The issuers of Green Bonds have indicated that the proceeds from the bonds will be used for environmentally positive goals such as greenhouse gas reduction, climate adaptation, and climate change mitigation. Issuers of designated Social Impact Bonds have indicated that the proceeds from the bonds will be used for projects supporting such issues as poverty alleviation, low-income housing, fair trade, and community development.

The fund's performance for the year was shaped by its continued cautious positioning, a deliberate approach taken in light of anticipated economic challenges related to tariffs. This cautious allocation resulted in the fund underperforming its benchmark during the reporting period from August 1, 2024 to July 31, 2025.

Within equities, performance was influenced by the continuation of a highly concentrated market environment, with gains largely driven by a small number of very large-capitalization companies. And although the administration initially introduced reduced clean energy incentives, the potential for interest rate cuts continued to support the interest-rate-sensitive clean energy stocks.

Our fixed income exposure outperformed the benchmark for the year, supported by our structural overweight to corporate bonds relative to government bonds. The fund's high-quality and moderate duration fixed income exposure kept pace with its fixed income benchmark and the designated Green, Sustainable or Social Impact bonds held by the fund continued to trade well.

#### Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $10,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.

![Fund Performance - Growth of 10K](g95172chartimages_972598.jpg)

---

| | | | |
|:---|:---|:---|:---|
| AVERAGE ANNUAL TOTAL RETURN | 1 Year | 5 Years | 10 Years |
| Green Century Balanced Fund (Individual Investor Class/GCBLX) | 4.64% | 6.88% | 6.68% |
| S&P 500 Index Benchmark<sup>1,2</sup> | 16.33% | 15.88% | 13.66% |
| Custom Balanced Index<sup>3,4</sup> | 10.99% | 9.61% | 8.93% |

---

 **<sup>1</sup>** **The Regulatory Index is provided as a broad measure of market performance.** 

 **<sup>2</sup>** **The S&P 500 Index is an unmanaged index of 500 stocks** 

 **<sup>3</sup>** **The Performance Index is provided because the advisor believes it is more reflective of the fund's investment strategy. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.** 

 **<sup>4</sup>** **The Custom Balanced Index is comprised of a 60% weighting in the S&P 1500 Index and a 40% weighting in the BofA Merrill Lynch 1-10 Year US Corporate & Government Index** 

**The Fund's past performance is not a good predictor of the Fund's future performance.**

Visit www.greencentury.com/balanced-fund/ for the most recent performance information. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

#### Key Fund Statistics
The following table outlines key fund statistic that you should pay attention to

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;**Fund net assets** | &nbsp;&nbsp;&nbsp;&nbsp;$379 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total number of portfolio holdings** | &nbsp;&nbsp;&nbsp;&nbsp;104 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total advisory fees paid (net)** | &nbsp;&nbsp;&nbsp;&nbsp;$2.5 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Portfolio turnover rate as of the end of the reporting period** | &nbsp;&nbsp;&nbsp;&nbsp;23% |

---

#### Graphical Representation of Holdings
The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.

**Top Ten Holdings**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;Microsoft Corporation | 5.5% |
| &nbsp;&nbsp;&nbsp;&nbsp;NVIDIA Corporation | 5.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Apple, Inc. | 3.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc., Class A | 3.2% |
| &nbsp;&nbsp;&nbsp;&nbsp;Mastercard, Inc., Class A | 2.2% |
| &nbsp;&nbsp;&nbsp;&nbsp;Costco Wholesale Corporation | 1.6% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc. | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Export Development Canada | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;International Bank for Reconstruction & Development | 1.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Netflix, Inc. | 1.3% |

---

**Sector Allocation**

![Graphical Representation - Allocation 1 Chart](g95172chartimages_972603.jpg)

**Asset Allocation**

![Graphical Representation - Allocation 2 Chart](g95172chartimages_972608.jpg)

#### Availability of Additional Information
You can find additional information on the Fund's website:

• &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; www.greencentury.com/regulatory-filings/

You can also request this information by contacting us at 1-800-221-5519.

#### Householding
Shareholders who have consented to receive a single annual or semi-annual shareholder report at a shared address may revoke this consent by contacting us at 1-800-221-5519.

![Green Centurty TSR QR Code](g95172images_305.jpg)

For additional information please scan the code for hosted material at *www.greencentury.com* 

GREEN CENTURY FUNDS

Green Century Balanced Fund

Institutional Class/GCBUX

![Green Century TSR Logo Cover 1](g95172images_307.jpg)

#### Annual Shareholder Report \| July 31, 2025
*For information on the Green Century Funds<sup>®</sup>, call 1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit *www.greencentury.com*.*

#### What were the Fund costs for the last year?
*(Based on a hypothetical $10,000 investment)*

The below table explains the costs that you would have paid within the reporting period.

---

| | | |
|:---|:---|:---|
| Fund (Class) | Costs of a $10,000 investment | Costs paid as a percentage<br>of a $10,000 investment |
| Green Century Balanced Fund<br>(Institutional Class/GCBUX) | $119 | 1.16% |

---

#### Management's Discussion of Fund Performance

#### How did the Fund perform last year? What affected the Fund's performance?
The Green Century Balanced Fund seeks capital growth and income from a diversified portfolio of stocks and bonds that meet Green Century's standards for corporate environmental responsibility. We seek to achieve the fund's investment objective by investing between 55% to 70% of the fund's net assets in value in multi-capitalization stocks and 30% to 45% in investment-grade quality bonds.

The Fund's investments focus on companies with strong environmental, social, and governance practices that may enhance corporate profitability and reduce certain types of risks. The Fund specifically avoids risks associated with exposure to fossil fuels, including traditional fossil-fuel based energy and utility companies. The Fund focuses on companies with strong balance sheets, strategic leadership in their products and markets, and strong environmental, social, and governance policies; these companies have greater financial flexibility to navigate choppy and volatile economic conditions.

In line with its environmental mandate, the Fund had exposure to what Green Century considers environmental leaders in a number of industries including Healthy Living, Capital Goods, and Transportation. The Fund has broad exposure to information technology, health care, financial, consumer, and industrial companies.

In addition to its equity exposure to environmental leaders, the Fund invests in designated Green Bonds and designated Social Impact Bonds. The issuers of Green Bonds have indicated that the proceeds from the bonds will be used for environmentally positive goals such as greenhouse gas reduction, climate adaptation, and climate change mitigation. Issuers of designated Social Impact Bonds have indicated that the proceeds from the bonds will be used for projects supporting such issues as poverty alleviation, low-income housing, fair trade, and community development.

The fund's performance for the year was shaped by its continued cautious positioning, a deliberate approach taken in light of anticipated economic challenges related to tariffs. This cautious allocation resulted in the fund underperforming its benchmark during the reporting period from August 1, 2024 to July 31, 2025.

Within equities, performance was influenced by the continuation of a highly concentrated market environment, with gains largely driven by a small number of very large-capitalization companies. And although the administration initially introduced reduced clean energy incentives, the potential for interest rate cuts continued to support the interest-rate-sensitive clean energy stocks.

Our fixed income exposure outperformed the benchmark for the year, supported by our structural overweight to corporate bonds relative to government bonds. The fund's high-quality and moderate duration fixed income exposure kept pace with its fixed income benchmark and the designated Green, Sustainable or Social Impact bonds held by the fund continued to trade well.

#### Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $250,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period. Institutional Shares were offered as of November 28, 2020. The Institutional Share Class performance prior to November 28, 2020 reflects the performance of the Fund's Individual Investor Class.

![Fund Performance - Growth of 10K](g95172chartimages_972634.jpg)

---

| | | | |
|:---|:---|:---|:---|
| AVERAGE ANNUAL TOTAL RETURN | 1 Year | 5 Years | 10 Years |
| Green Century Balanced Fund (Institutional Class/GCBUX) | 4.94% | 7.18% | 6.83% |
| S&P 500 Index Benchmark<sup>1,2</sup> | 16.33% | 15.88% | 13.66% |
| Custom Balanced Index<sup>3,4</sup> | 10.99% | 9.61% | 8.93% |

---

 **<sup>1</sup>** **The Regulatory Index is provided as a broad measure of market performance.** 

 **<sup>2</sup>** **The S&P 500 Index is an unmanaged index of 500 stocks** 

 **<sup>3</sup>** **The Performance Index is provided because the advisor believes it is more reflective of the fund's investment strategy. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.** 

 **<sup>4</sup>** **The Custom Balanced Index is comprised of a 60% weighting in the S&P 1500 Index and a 40% weighting in the BofA Merrill Lynch 1-10 Year US Corporate & Government Index** 

**The Fund's past performance is not a good predictor of the Fund's future performance.**

Visit www.greencentury.com/balanced-fund-institutional/ for the most recent performance information. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares.

#### Key Fund Statistics
The following table outlines key fund statistic that you should pay attention to

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;**Fund net assets** | &nbsp;&nbsp;&nbsp;&nbsp;$379 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total number of portfolio holdings** | &nbsp;&nbsp;&nbsp;&nbsp;104 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total advisory fees paid (net)** | &nbsp;&nbsp;&nbsp;&nbsp;$2.5 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Portfolio turnover rate as of the end of the reporting period** | &nbsp;&nbsp;&nbsp;&nbsp;23% |

---

#### Graphical Representation of Holdings
The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.

**Top Ten Holdings**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;Microsoft Corporation | 5.5% |
| &nbsp;&nbsp;&nbsp;&nbsp;NVIDIA Corporation | 5.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Apple, Inc. | 3.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc., Class A | 3.2% |
| &nbsp;&nbsp;&nbsp;&nbsp;Mastercard, Inc., Class A | 2.2% |
| &nbsp;&nbsp;&nbsp;&nbsp;Costco Wholesale Corporation | 1.6% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc. | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Export Development Canada | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;International Bank for Reconstruction & Development | 1.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Netflix, Inc. | 1.3% |

---

**Sector Allocation**

![Graphical Representation - Allocation 1 Chart](g95172chartimages_972639.jpg)

**Asset Allocation**

![Graphical Representation - Allocation 2 Chart](g95172chartimages_972644.jpg)

#### Availability of Additional Information
You can find additional information on the Fund's website:

• &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; www.greencentury.com/regulatory-filings/

You can also request this information by contacting us at 1-800-221-5519.

#### Householding
Shareholders who have consented to receive a single annual or semi-annual shareholder report at a shared address may revoke this consent by contacting us at 1-800-221-5519.

![Green Centurty TSR QR Code](g95172images_305.jpg)

For additional information please scan the code for hosted material at *www.greencentury.com* 

GREEN CENTURY FUNDS

Green Century Equity Fund

Individual Investor Class/GCEQX

![Green Century TSR Logo Cover 1](g95172images_307.jpg)

#### Annual Shareholder Report \| July 31, 2025
*For information on the Green Century Funds<sup>®</sup>, call 1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit *www.greencentury.com*.*

#### What were the Fund costs for the last year?
*(Based on a hypothetical $10,000 investment)*

The below table explains the costs that you would have paid within the reporting period.

---

| | | |
|:---|:---|:---|
| Fund (Class) | Costs of a $10,000 investment | Costs paid as a percentage<br>of a $10,000 investment |
| Green Century Equity Fund<br>(Individual Investor Class/GCEQX) | $129 | 1.20% |

---

#### Management's Discussion of Fund Performance

#### How did the Fund perform last year? What affected the Fund's performance?
The Investor share class of the Green Century Equity Fund returned 14.36%, for the one year period ended July 31, 2025. Over the same time period, the S&P 500 Index returned 16.33%. The strongest performing sectors in the Equity Fund were Information Technology, Financials, and Consumer Discretionary, which returned 27.5%, 20.3%, and 17.2%, respectively. The worst performing sectors were Health Care, Consumer Staples, and Utilities, which returned -10.7%, -7.5%, and 0.5% respectively, for the year. Within the S&P 500 Index, Communication Services, Information Technology, and Financials were the strongest performing sectors, gaining 31.3%, 23.6%, and 21.5%, respectively. The worst performing sectors were Health Care, Energy, and Materials, which returned

-11.3%, -5.4%, and -3.3%, respectively, for the year.

#### Energy Transfer
The Energy sector returned -3.25% over the trailing twelve-month period. Only the Health Care sector had worse performance.

#### U.S. Technology
U.S. technology and technology-like companies such as Netflix and Meta Platforms continued to drive strong returns within the U.S. market. The fund's overweights to the Information Technology and Communication Services sectors continue to positively benefit the fund's performance.

#### Old and New Economies
The fund remains relatively neutral in terms of relative sector weights to Financials, Utilities, Industrials, and Real Estate, which did not have material impacts on the fund's performance, which was driven by relative sector differences amongst Information Technology, Health Care, Consumer Staples, and Communication Services.

#### Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $10,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.

![Fund Performance - Growth of 10K](g95172chartimages_972454.jpg)

---

| | | | |
|:---|:---|:---|:---|
| AVERAGE ANNUAL TOTAL RETURN | 1 Year | 5 Years | 10 Years |
| Green Century Equity Fund (Individual Investor Class/GCEQX) | 14.36% | 14.27% | 12.90% |
| S&P 500 Index<sup>1</sup> | 16.33% | 15.88% | 13.66% |

---

 **<sup>1</sup>** **The S&P 500 Index is an unmanaged index of 500 stocks** 

**The Fund's past performance is not a good predictor of the Fund's future performance.**

Visit www.greencentury.com/equity-fund/ for the most recent performance information. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.

#### Key Fund Statistics
The following table outlines key fund statistic that you should pay attention to

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;**Fund net assets** | &nbsp;&nbsp;&nbsp;&nbsp;$715 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total number of portfolio holdings** | &nbsp;&nbsp;&nbsp;&nbsp;338 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total advisory fees paid (net)** | &nbsp;&nbsp;&nbsp;&nbsp;$1.4 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Portfolio turnover rate as of the end of the reporting period** | &nbsp;&nbsp;&nbsp;&nbsp;8% |

---

#### Graphical Representation of Holdings
The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.

**Top Ten Holdings**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;NVIDIA Corporation | 15.9% |
| &nbsp;&nbsp;&nbsp;&nbsp;Microsoft Corporation | 13.7% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc., Class A | 4.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc., Class C | 3.5% |
| &nbsp;&nbsp;&nbsp;&nbsp;Tesla, Inc. | 3.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Visa, Inc., Class A | 2.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Mastercard, Inc., Class A | 1.8% |
| &nbsp;&nbsp;&nbsp;&nbsp;Home Depot, Inc. (The) | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Procter & Gamble Company (The) | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;AbbVie, Inc. | 1.3% |

---

**Sector Allocation**

![Graphical Representation - Allocation 1 Chart](g95172chartimages_972459.jpg)

**Asset Allocation**

![Graphical Representation - Allocation 2 Chart](g95172chartimages_972464.jpg)

#### Availability of Additional Information
You can find additional information on the Fund's website:

• &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; www.greencentury.com/regulatory-filings/

You can also request this information by contacting us at 1-800-221-5519.

#### Householding
Shareholders who have consented to receive a single annual or semi-annual shareholder report at a shared address may revoke this consent by contacting us at 1-800-221-5519.

![Green Centurty TSR QR Code](g95172images_305.jpg)

For additional information please scan the code for hosted material at *www.greencentury.com* 

GREEN CENTURY FUNDS

Green Century Equity Fund

Institutional Class/GCEUX

![Green Century TSR Logo Cover 1](g95172images_307.jpg)

#### Annual Shareholder Report \| July 31, 2025
*For information on the Green Century Funds<sup>®</sup>, call 1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit *www.greencentury.com*.*

#### What were the Fund costs for the last year?
*(Based on a hypothetical $10,000 investment)*

The below table explains the costs that you would have paid within the reporting period.

---

| | | |
|:---|:---|:---|
| Fund (Class) | Costs of a $10,000 investment | Costs paid as a percentage<br>of a $10,000 investment |
| Green Century Equity Fund<br>(Institutional Class/GCEUX) | $97 | 0.90% |

---

#### Management's Discussion of Fund Performance

#### How did the Fund perform last year? What affected the Fund's performance?
The Institutional share class of the Green Century Equity Fund returned 14.71%, for the one year period ended July 31, 2025. Over the same time period, the S&P 500 Index returned 16.33%. The strongest performing sectors in the Equity Fund were Information Technology, Financials, and Consumer Discretionary, which returned 27.5%, 20.3%, and 17.2%, respectively. The worst performing sectors were Health Care, Consumer Staples, and Utilities, which returned -10.7%, -7.5%, and 0.5% respectively, for the year. Within the S&P 500 Index, Communication Services, Information Technology, and Financials were the strongest performing sectors, gaining 31.3%, 23.6%, and 21.5%, respectively. The worst performing sectors were Health Care, Energy, and Materials, which returned

-11.3%, -5.4%, and -3.3%, respectively, for the year.

#### Energy Transfer
The Energy sector returned -3.25% over the trailing twelve-month period. Only the Health Care sector had worse performance.

#### U.S. Technology
U.S. technology and technology-like companies such as Netflix and Meta Platforms continued to drive strong returns within the U.S. market. The fund's overweights to the Information Technology and Communication Services sectors continue to positively benefit the fund's performance.

#### Old and New Economies
The fund remains relatively neutral in terms of relative sector weights to Financials, Utilities, Industrials, and Real Estate, which did not have material impacts on the fund's performance, which was driven by relative sector differences amongst Information Technology, Health Care, Consumer Staples, and Communication Services.

#### Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $250,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period. The Institutional Share Class performance for periods prior to April 30, 2018 reflects the performance of the Fund's Individual Investor Class.

![Fund Performance - Growth of 10K](g95172chartimages_972490.jpg)

---

| | | | |
|:---|:---|:---|:---|
| AVERAGE ANNUAL TOTAL RETURN | 1 Year | 5 Years | 10 Years |
| Green Century Equity Fund (Institutional Class/GCEUX) | 14.71% | 14.62% | 13.14% |
| S&P 500 Index<sup>1</sup> | 16.33% | 15.88% | 13.66% |

---

 **<sup>1</sup>** **The S&P 500 Index is an unmanaged index of 500 stocks** 

**The Fund's past performance is not a good predictor of the Fund's future performance.**

Visit www.greencentury.com/equity-fund-institutional/ for the most recent performance information. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.

#### Key Fund Statistics
The following table outlines key fund statistic that you should pay attention to

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;**Fund net assets** | &nbsp;&nbsp;&nbsp;&nbsp;$715 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total number of portfolio holdings** | &nbsp;&nbsp;&nbsp;&nbsp;338 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total advisory fees paid (net)** | &nbsp;&nbsp;&nbsp;&nbsp;$1.4 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Portfolio turnover rate as of the end of the reporting period** | &nbsp;&nbsp;&nbsp;&nbsp;8% |

---

#### Graphical Representation of Holdings
The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Sector Allocation exclude short-term holdings, if any. The Sector Allocation chart represents Common Stocks of the Fund.

**Top Ten Holdings**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;NVIDIA Corporation | 15.9% |
| &nbsp;&nbsp;&nbsp;&nbsp;Microsoft Corporation | 13.7% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc., Class A | 4.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;Alphabet, Inc., Class C | 3.5% |
| &nbsp;&nbsp;&nbsp;&nbsp;Tesla, Inc. | 3.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Visa, Inc., Class A | 2.3% |
| &nbsp;&nbsp;&nbsp;&nbsp;Mastercard, Inc., Class A | 1.8% |
| &nbsp;&nbsp;&nbsp;&nbsp;Home Depot, Inc. (The) | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Procter & Gamble Company (The) | 1.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;AbbVie, Inc. | 1.3% |

---

**Sector Allocation**

![Graphical Representation - Allocation 1 Chart](g95172chartimages_972495.jpg)

**Asset Allocation**

![Graphical Representation - Allocation 2 Chart](g95172chartimages_972500.jpg)

#### Availability of Additional Information
You can find additional information on the Fund's website:

• &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; www.greencentury.com/regulatory-filings/

You can also request this information by contacting us at 1-800-221-5519.

#### Householding
Shareholders who have consented to receive a single annual or semi-annual shareholder report at a shared address may revoke this consent by contacting us at 1-800-221-5519.

![Green Centurty TSR QR Code](g95172images_305.jpg)

For additional information please scan the code for hosted material at *www.greencentury.com* 

GREEN CENTURY FUNDS

Green Century MSCI International Index Fund

Individual Investor Class/GCINX

![Green Century TSR Logo Cover 1](g95172images_307.jpg)

#### Annual Shareholder Report \| July 31, 2025
*For information on the Green Century Funds<sup>®</sup>, call 1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit *www.greencentury.com*.*

#### What were the Fund costs for the last year?
*(Based on a hypothetical $10,000 investment)*

The below table explains the costs that you would have paid within the reporting period.

---

| | | |
|:---|:---|:---|
| Fund (Class) | Costs of a $10,000 investment | Costs paid as a percentage<br>of a $10,000 investment |
| Green Century MSCI International Index Fund<br>(Individual Investor Class/GCINX) | $131 | 1.28% |

---

#### Management's Discussion of Fund Performance

#### How did the Fund perform last year? What affected the Fund's performance?
The Investor share class of the Green Century MSCI International Index Fund returned 4.96%, for the one year period ended July 31, 2025. Over the same time period, the MSCI World ex USA Index returned 13.70%. The strongest performing sectors in the International Fund were Financials, Consumer Discretionary, and Industrials, which returned 27.2%, 14.0%, and 12.1%, respectively. The worst performing sectors were Health Care, Utilities, and Real Estate, which returned -35.6%, -9.8%, and +1.78% respectively, for the year. Within the MSCI World ex USA Index, Financials, Communication Services, and Industrials were the strongest performing sectors, gaining 36.2%, 29.0%, and 23.2%, respectively. The worst performing sectors were Health Care, Materials, and Consumer Discretionary, which returned -10.8%, 2.6%, and 3.6%, respectively, for the year.

#### Energy Transfer
Despite a positive return for the Energy sector during the trailing twelve-month period, the fund's exclusion of larger companies that underperformed was beneficial to returns. The underweight to Utilities detracted from performance due to strong overall performance within the sector.

#### International Technology
Non-US IT companies had modest positive performance overall but with wide dispersion of performance within the sector, a departure from concentrated returns within the U.S. information technology sector.

#### Old and New Economies
The fund benefitted from overweights to Financials (slight overweights to Industrials and Materials) as well as underweights to Health Care. While overweight information technology, relative to the Index the impact was a slight drag on performance due to overweights to a few companies that underperformed.

#### Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $10,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.

![Fund Performance - Growth of 10K](g95172chartimages_972562.jpg)

---

| | | | |
|:---|:---|:---|:---|
| AVERAGE ANNUAL TOTAL RETURN | 1 Year | 5 Years | Since<br>Inception<sup>1</sup> |
| Green Century MSCI International Index Fund (Individual Investor Class/GCINX) | 4.96% | 6.51% | 6.14% |
| MSCI World ex USA Index<sup>2</sup> | 13.70% | 10.65% | 7.94% |

---

 **<sup>1</sup>** **Inception Date September 30, 2016** 

 **<sup>2</sup>** **The MSCI World EX USA Index is a custom index calculated by MSCI Inc. The index includes large and mid-cap stocks across 22 of 23 Developed Markets countries and excludes the United States** 

**The Fund's past performance is not a good predictor of the Fund's future performance.**

Visit www.greencentury.com/international-index-fund/ for the most recent performance information. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.

#### Key Fund Statistics
The following table outlines key fund statistic that you should pay attention to

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;**Fund net assets** | &nbsp;&nbsp;&nbsp;&nbsp;$165 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total number of portfolio holdings** | &nbsp;&nbsp;&nbsp;&nbsp;184 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total advisory fee paid (net)** | &nbsp;&nbsp;&nbsp;&nbsp;$496 k. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Portfolio turnover rate as of the end of the reporting period** | &nbsp;&nbsp;&nbsp;&nbsp;20% |

---

#### Graphical Representation of Holdings
The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Country Allocation exclude short-term holdings, if any. The Country Allocation chart represents Common Stocks of the Fund.

**Top Ten Holdings**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;ASML Holding NV | 4.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Unilever PLC | 3.0% |
| &nbsp;&nbsp;&nbsp;&nbsp;Novo Nordisk A/S, Class B | 2.9% |
| &nbsp;&nbsp;&nbsp;&nbsp;Schneider Electric SE | 2.9% |
| &nbsp;&nbsp;&nbsp;&nbsp;Hitachi Ltd. | 2.5% |
| &nbsp;&nbsp;&nbsp;&nbsp;Sony Group Corporation | 2.2% |
| &nbsp;&nbsp;&nbsp;&nbsp;ABB Ltd. | 2.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;Zurich Insurance Group AG | 2.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;AIA Group Ltd. | 2.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;RELX PLC | 2.0% |

---

**Top Ten Country Allocation**

![Graphical Representation - Allocation 1 Chart](g95172chartimages_972567.jpg)

**Asset Allocation**

![Graphical Representation - Allocation 2 Chart](g95172chartimages_972572.jpg)

#### Availability of Additional Information
You can find additional information on the Fund's website:

• &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; www.greencentury.com/regulatory-filings/

You can also request this information by contacting us at 1-800-221-5519.

#### Householding
Shareholders who have consented to receive a single annual or semi-annual shareholder report at a shared address may revoke this consent by contacting us at 1-800-221-5519.

![Green Centurty TSR QR Code](g95172images_305.jpg)

For additional information please scan the code for hosted material at *www.greencentury.com* 

GREEN CENTURY FUNDS

Green Century MSCI International Index Fund

Institutional Class/GCIFX

![Green Century TSR Logo Cover 1](g95172images_307.jpg)

#### Annual Shareholder Report \| July 31, 2025
*For information on the Green Century Funds<sup>®</sup>, call 1-800-93-GREEN. For information on how to open an account and account services, call 1-800-221-5519 8:00 am to 6:00 pm Eastern Time, Monday through Friday. For daily share price information twenty-four hours a day, visit *www.greencentury.com*.*

#### What were the Fund costs for the last year?
*(Based on a hypothetical $10,000 investment)*

The below table explains the costs that you would have paid within the reporting period.

---

| | | |
|:---|:---|:---|
| Fund (Class) | Costs of a $10,000 investment | Costs paid as a percentage<br>of a $10,000 investment |
| Green Century MSCI International Index Fund<br>(Institutional Class/GCIFX) | $101 | 0.98% |

---

#### Management's Discussion of Fund Performance

#### How did the Fund perform last year? What affected the Fund's performance?
The Institutional share class of the Green Century MSCI International Index Fund returned 5.24%, for the one year period ended July 31, 2025. Over the same time period, the MSCI World ex USA Index returned 13.70%. The strongest performing sectors in the International Fund were Financials, Consumer Discretionary, and Industrials, which returned 27.2%, 14.0%, and 12.1%, respectively. The worst performing sectors were Health Care, Utilities, and Real Estate, which returned -35.6%, -9.8%, and +1.78% respectively, for the year. Within the MSCI World ex USA Index, Financials, Communication Services, and Industrials were the strongest performing sectors, gaining 36.2%, 29.0%, and 23.2%, respectively. The worst performing sectors were Health Care, Materials, and Consumer Discretionary, which returned -10.8%, 2.6%, and 3.6%, respectively, for the year.

#### Energy Transfer
Despite a positive return for the Energy sector during the trailing twelve-month period, the fund's exclusion of larger companies that underperformed was beneficial to returns. The underweight to Utilities detracted from performance due to strong overall performance within the sector.

#### International Technology
Non-US IT companies had modest positive performance overall but with wide dispersion of performance within the sector, a departure from concentrated returns within the U.S. information technology sector.

#### Old and New Economies
The fund benefitted from overweights to Financials (slight overweights to Industrials and Materials) as well as underweights to Health Care. While overweight information technology, relative to the Index the impact was a slight drag on performance due to overweights to a few companies that underperformed.

#### Fund Performance
The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the Fund. It assumes a $250,000 initial investment at the beginning of the first fiscal year in an appropriate broad-based securities market index for the same period.

![Fund Performance - Growth of 10K](g95172chartimages_972526.jpg)

---

| | | | |
|:---|:---|:---|:---|
| AVERAGE ANNUAL TOTAL RETURN | 1 Year | 5 Years | Since<br>Inception<sup>1</sup> |
| Green Century MSCI International Index Fund (Institutional Class/GCIFX) | 5.24% | 6.83% | 6.44% |
| MSCI World ex USA Index<sup>2</sup> | 13.70% | 10.65% | 7.94% |

---

 **<sup>1</sup>** **Inception Date September 30, 2016** 

 **<sup>2</sup>** **The MSCI World EX USA Index is a custom index calculated by MSCI Inc. The index includes large and mid-cap stocks across 22 of 23 Developed Markets countries and excludes the United States** 

**The Fund's past performance is not a good predictor of the Fund's future performance.**

Visit www.greencentury.com/international-index-fund-institutional/ for the most recent performance information. The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or redemption of fund shares. The investment return and principal value of shares of the Fund fluctuate, so your shares, when sold, may be worth more or less than their original cost.

#### Key Fund Statistics
The following table outlines key fund statistic that you should pay attention to

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;**Fund net assets** | &nbsp;&nbsp;&nbsp;&nbsp;$165 mil. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total number of portfolio holdings** | &nbsp;&nbsp;&nbsp;&nbsp;184 |
| &nbsp;&nbsp;&nbsp;&nbsp;**Total advisory fee paid (net)** | &nbsp;&nbsp;&nbsp;&nbsp;$496 k. |
| &nbsp;&nbsp;&nbsp;&nbsp;**Portfolio turnover rate as of the end of the reporting period** | &nbsp;&nbsp;&nbsp;&nbsp;20% |

---

#### Graphical Representation of Holdings
The tables below show the investment make up of the Fund, representing percentage of total net assets of the Fund. The Top Ten Holdings and Country Allocation exclude short-term holdings, if any. The Country Allocation chart represents Common Stocks of the Fund.

**Top Ten Holdings**

---

| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;ASML Holding NV | 4.4% |
| &nbsp;&nbsp;&nbsp;&nbsp;Unilever PLC | 3.0% |
| &nbsp;&nbsp;&nbsp;&nbsp;Novo Nordisk A/S, Class B | 2.9% |
| &nbsp;&nbsp;&nbsp;&nbsp;Schneider Electric SE | 2.9% |
| &nbsp;&nbsp;&nbsp;&nbsp;Hitachi Ltd. | 2.5% |
| &nbsp;&nbsp;&nbsp;&nbsp;Sony Group Corporation | 2.2% |
| &nbsp;&nbsp;&nbsp;&nbsp;ABB Ltd. | 2.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;Zurich Insurance Group AG | 2.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;AIA Group Ltd. | 2.1% |
| &nbsp;&nbsp;&nbsp;&nbsp;RELX PLC | 2.0% |

---

**Top Ten Country Allocation**

![Graphical Representation - Allocation 1 Chart](g95172chartimages_972531.jpg)

**Asset Allocation**

![Graphical Representation - Allocation 2 Chart](g95172chartimages_972536.jpg)

#### Availability of Additional Information
You can find additional information on the Fund's website:

• &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; www.greencentury.com/regulatory-filings/

You can also request this information by contacting us at 1-800-221-5519.

#### Householding
Shareholders who have consented to receive a single annual or semi-annual shareholder report at a shared address may revoke this consent by contacting us at 1-800-221-5519.

![Green Centurty TSR QR Code](g95172images_305.jpg)

For additional information please scan the code for hosted material at *www.greencentury.com* 

GREEN CENTURY FUNDS

------

(b) Not applicable.

#### Item 2. Code of Ethics
(a) The registrant has adopted a Code of Ethics applicable to the registrant's principal executive officer, principal financial officer and principal accounting officer or controller.

(c) During the period covered by this report, there were no amendments to the provisions of the Code of Ethics referred to in Item 2(a) above.

(d) During the period covered by this report, there were no implicit or explicit waivers to the provisions of the Code of Ethics referred to in Item 2(a) above.

(e) Not applicable.

(f) The Code of Ethics is filed as an exhibit to this Form N-CSR.

#### Item 3. Audit Committee Financial Expert
The Board of Trustees of the registrant has determined that Sanford Pooler, a member of the Board's audit committee, qualifies as an "audit committee financial expert" as that term is defined in the instructions to Item 3 of Form N-CSR. Mr. Pooler is "independent" as that term is defined in the instructions to Item 3 of Form N-CSR.

#### Item 4. Principal Accountant Fees and Services
(a) Audit Fees. The aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for the audit of the registrant's annual financial statements or services that are normally provided by the accountant in connection with statutory and regulatory filings or engagements for those fiscal years are as follows.

For the fiscal year ended 7/31/25: $119,800

For the fiscal year ended 7/31/24: $111,625

(b) Audit-Related Fees. No fees were billed in either of the last two fiscal years for assurance and related services by the principal accountant that are reasonably related to the performance of the audit of the registrant's financial statements and are not reported under paragraph (a) of this item.

(c) Tax Fees. The aggregate fees billed for each of the last two fiscal years for professional services rendered by the principal accountant for tax compliance, tax advice and tax planning are as follows. The services comprising the fees disclosed under this category are tax compliance monitoring and tax filing preparation.

For the fiscal year ended 7/31/25: $25,050

For the fiscal year ended 7/31/24: $23,850

------

(d) All Other Fees. No fees were billed in each of the last two fiscal years for products and services provided by the principal accountant, other than the services reported in paragraphs (a) through (c) of this item.

---

| | |
|:---|:---|
| (e)(1) | The Charter of the Audit Committee of the Board requires that the Committee approve (a) all audit and permissible non-audit services to be provided to the Funds and (b) all permissible non-audit services to be provided by the Funds' independent auditors to the Funds' investment adviser or administrator or any entity controlling, controlled by, or under common control with the investment adviser or administrator that provides ongoing services to the Funds, if the engagement relates directly to the operations and financial reporting of the Funds. The Audit Committee has the duty to consider whether the non-audit services provided by the Funds' auditor to the Funds' investment adviser, administrator, or any adviser affiliate that provides ongoing services to the Funds, which services were not pre-approved by the Audit Committee, are compatible with maintaining the auditor's independence and to review and approve the fees proposed to be charged to the Funds by the auditors for each audit and non-audit service.  |

---

---

| | |
|:---|:---|
| (e)(2) | Zero percent of the services described in each of paragraphs (b) through (d) of this Item were approved by the Audit Committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.  |

---

(f) Not applicable.

(g) The aggregate non-audit fees billed by the registrant's accountant for services rendered to the registrant were the tax compliance, tax advice and tax planning fees listed in paragraph (c) of this Item and are as follows. No non-audit fees were billed by the registrant's accountant for services rendered to the registrant's investment adviser or any entity controlling, controlled by, or under common control with the adviser that provides ongoing services to the registrant for each of the last two fiscal years of the registrant.

For the fiscal year ended 7/31/25: $25,050

For the fiscal year ended 7/31/24: $23,850

(h) Not applicable.

(i) Not applicable.

(j) Not applicable.

#### Item 5. Audit Committee of Listed Registrants
Not applicable.

#### Item 6. Investments
(a) Included as part of the report to shareholders filed under Item 7(a) of this Form N-CSR.

(b) Not applicable.

------

#### Item 7. Financial Statements and Financial Highlights for Open-End Management Investment Companies
(a) Copy of the most recent financial statements:

------

![LOGO](g95172g83p75.jpg)

### Green Century Balanced Fund

#### (Individual Investor Class: GCBLX)

#### (Institutional Class: GCBUX)

### Green Century Equity Fund

#### (Individual Investor Class: GCEQX)

#### (Institutional Class: GCEUX)

### Green Century MSCI International Index Fund

#### (Individual Investor Class: GCINX)

#### (Institutional Class: GCIFX)

### ANNUAL FINANCIALS AND OTHER INFORMATION

### July 31, 2025

------

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS July 31, 2025

---

| | | | |
|:---|:---|:---|:---|
|  COMMON STOCKS — 62.3% |  |  |  |
|  | SHARES | VALUE | VALUE |
|  Software & Services — 9.7% |  |  |  |
|  Cadence Design Systems, Inc. (a) | 8359 | $| 3047441 |
|  Intuit, Inc. | 4160 |  | 3266141 |
|  Microsoft Corporation | 39107 |  | 20863584 |
|  Palo Alto Networks, Inc. (a) | 18476 |  | 3207434 |
|  ServiceNow, Inc. (a) | 4349 |  | 4101629 |
|  Shopify, Inc., Class A (a) | 19159 |  | 2341421 |
|  |  |  | 36827650 |
|  Semiconductors & Semiconductor Equipment — 7.3% | Semiconductors & Semiconductor Equipment — 7.3% | Semiconductors & Semiconductor Equipment — 7.3% | Semiconductors & Semiconductor Equipment — 7.3% |
|  Analog Devices, Inc. | 11600 |  | 2605708 |
|  ASML Holding NV (b) | 3740 |  | 2598216 |
|  NVIDIA Corporation | 115759 |  | 20590053 |
|  NXP Semiconductors NV (b) | 9455 |  | 2021195 |
|  |  |  | 27815172 |
|  Capital Goods — 6.6% |  |  |  |
|  Deere & Company | 4061 |  | 2129467 |
|  Eaton Corporation PLC | 10408 |  | 4004166 |
|  Ferguson Enterprises, Inc. | 15607 |  | 3485511 |
|  MYR Group, Inc. (a) | 14633 |  | 2831486 |
|  Trane Technologies PLC | 7776 |  | 3406510 |
|  United Rentals, Inc. | 3116 |  | 2751241 |
|  Westinghouse Air Brake Technologies Corporation | 12138 |  | 2331103 |
|  Xylem, Inc. | 27149 |  | 3926288 |
|  |  |  | 24865772 |
|  Media & Entertainment — 5.3% |  |  |  |
|  Alphabet, Inc., Class A | 62283 |  | 11952108 |
|  Netflix, Inc. (a) | 4284 |  | 4966869 |
|  Spotify Technology SA (a) | 5107 |  | 3199740 |
|  |  |  | 20118717 |
|  Banks — 3.5% |  |  |  |
|  Bank of America Corporation | 100000 |  | 4727000 |
|  East West Bancorp, Inc. | 41298 |  | 4140124 |
|  PNC Financial Services Group, Inc. (The) | 23836 |  | 4535276 |
|  |  |  | 13402400 |
|  Financial Services — 3.5% |  |  |  |
|  Fiserv, Inc. (a) | 11012 |  | 1530007 |
|  Intercontinental Exchange, Inc. | 17678 |  | 3267425 |
|  Mastercard, Inc., Class A | 14830 |  | 8400750 |
|  |  |  | 13198182 |

---

---

| | | |
|:---|:---|:---|
|  | SHARES | VALUE |
|  Technology Hardware & Equipment — 3.3% | Technology Hardware & Equipment — 3.3% | Technology Hardware & Equipment — 3.3% |
|  Apple, Inc. | 60169 | $12489279 |
|  Consumer Discretionary Distribution & Retail — 2.9% | Consumer Discretionary Distribution & Retail — 2.9% | Consumer Discretionary Distribution & Retail — 2.9% |
|  Home Depot, Inc. (The) | 9892 | 3635409 |
|  MercadoLibre, Inc. (a)(b) | 1232 | 2924632 |
|  TJX Companies, Inc. (The) | 35295 | 4395286 |
|  Tractor Supply Company | 1310 | 74605 |
|  |  | 11029932 |
|  Healthcare Equipment & Services — 2.8% | Healthcare Equipment & Services — 2.8% |  |
|  Alcon, Inc. | 35019 | 3065914 |
|  Elevance Health, Inc. | 4437 | 1256026 |
|  Intuitive Surgical, Inc. (a) | 3347 | 1610208 |
|  Stryker Corporation | 5859 | 2301005 |
|  UnitedHealth Group, Inc. | 8750 | 2183650 |
|  |  | 10416803 |
|  Consumer Services — 2.5% | Consumer Services — 2.5% | Consumer Services — 2.5% |
|  Booking Holdings, Inc. | 510 | 2807071 |
|  Bright Horizons Family Solutions, Inc. (a) | 20925 | 2366617 |
|  Chipotle Mexican Grill, Inc. (a) | 45286 | 1941864 |
|  Marriott International, Inc., Class A | 9124 | 2407185 |
|  |  | 9522737 |
|  Consumer Staples Distribution & Retail — 2.3% | Consumer Staples Distribution & Retail — 2.3% | Consumer Staples Distribution & Retail — 2.3% |
|  Costco Wholesale Corporation | 6640 | 6239210 |
|  Sysco Corporation | 30845 | 2455262 |
|  |  | 8694472 |
|  Insurance — 2.2% |  |  |
|  Arthur J. Gallagher & Company | 7712 | 2215272 |
|  Progressive Corporation (The) | 15121 | 3659887 |
|  Travelers Companies, Inc. (The) | 9008 | 2344242 |
|  |  | 8219401 |
|  Pharmaceuticals, Biotechnology & Life Sciences — 1.6% | Pharmaceuticals, Biotechnology & Life Sciences — 1.6% | Pharmaceuticals, Biotechnology & Life Sciences — 1.6% |
|  AstraZeneca PLC ADR (b) | 36787 | 2688762 |
|  Gilead Sciences, Inc. | 28375 | 3186229 |
|  |  | 5874991 |
|  Renewable Energy & Energy Efficiency — 1.5% | Renewable Energy & Energy Efficiency — 1.5% | Renewable Energy & Energy Efficiency — 1.5% |
|  First Solar, Inc. (a) | 15473 | 2703597 |
|  Ormat Technologies, Inc. | 35154 | 3143119 |
|  |  | 5846716 |

---

------

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | |
|:---|:---|:---|
|  | SHARES | VALUE |
|  Household & Personal Products — 1.2% | Household & Personal Products — 1.2% | Household & Personal Products — 1.2% |
|  Procter & Gamble Company (The) | 13683 | $2058881 |
|  Unilever PLC ADR (b) | 39856 | 2328786 |
|  |  | 4387667 |
|  Materials — 1.1% |  |  |
|  Avery Dennison Corporation | 11233 | 1884560 |
|  Ecolab, Inc. | 9358 | 2449550 |
|  |  | 4334110 |
|  Consumer Durables & Apparel — 1.0% | Consumer Durables & Apparel — 1.0% | Consumer Durables & Apparel — 1.0% |
|  Deckers Outdoor Corporation (a) | 20495 | 2175954 |
|  Lululemon Athletica, Inc. (a) | 7160 | 1435795 |
|  |  | 3611749 |
|  Equity Real Estate Investment Trusts (REITs) — 0.8% | Equity Real Estate Investment Trusts (REITs) — 0.8% | Equity Real Estate Investment Trusts (REITs) — 0.8% |
|  Equinix, Inc. REIT | 2596 | 2038301 |
|  Prologis, Inc. REIT | 10930 | 1167106 |
|  |  | 3205407 |
|  Commercial & Professional Services — 0.8% | Commercial & Professional Services — 0.8% | Commercial & Professional Services — 0.8% |
|  Verisk Analytics, Inc. | 10870 | 3029578 |
|  Utilities — 0.7% |  |  |
|  American Water Works Company, Inc. | 19443 | 2726686 |
|  Real Estate Management & Development — 0.7% | Real Estate Management & Development — 0.7% | Real Estate Management & Development — 0.7% |
|  Jones Lang LaSalle, Inc. (a) | 9787 | 2646013 |
|  Transportation — 0.6% |  |  |
|  Union Pacific Corporation | 10254 | 2276080 |
|  Food & Beverage — 0.4% |  |  |
|  McCormick & Company, Inc. | 23732 | 1676191 |
|  Total Common Stocks (Cost $115,224,383) |  | 236215705 |
|  | PRINCIPAL<br>AMOUNT |  |
|  BONDS & NOTES — 36.8% |  |  |
|  Green and Sustainability Bonds — 26.0% | Green and Sustainability Bonds — 26.0% | Green and Sustainability Bonds — 26.0% |
|  Alphabet, Inc.<br>1.10%, due 8/15/30 (c) | $6000000 | 5173860 |
|  Apple, Inc.<br>3.00%, due 6/20/27 (c) | 5000000 | 4906300 |

---

---

| | | |
|:---|:---|:---|
|  | PRINCIPAL<br>AMOUNT | VALUE |
|  Green and Sustainability Bonds — (continued) | Green and Sustainability Bonds — (continued) | Green and Sustainability Bonds — (continued) |
|  Asian Development Bank<br>3.125%, due 9/26/28 (b) | $4000000 | $3906020 |
|  AvalonBay Communities, Inc.<br>2.05%, due 1/15/32 (c) | 4000000 | 3444044 |
|  Boston Properties LP<br>4.50%, due 12/1/28 (c) | 5000000 | 4952270 |
|  Bridge Housing Corporation<br>3.25%, due 7/15/30 (c) | 4500000 | 4172971 |
|  Century Housing Corporation<br>5.40%, due 8/15/25 | 4500000 | 4498771 |
|  European Investment Bank<br>2.125%, due 4/13/26 (b) | 500000 | 492683 |
|  European Investment Bank<br>3.75%, due 2/14/33 (b) | 5000000 | 4857475 |
|  Export Development Canada<br>4.75%, due 6/5/34 | 5000000 | 5150380 |
|  International Bank for Reconstruction & Development<br>4.00%, due 7/25/30 (b) | 5000000 | 5002850 |
|  International Finance Corporation<br>2.125%, due 4/7/26 (b) | 2885000 | 2843419 |
|  Johnson Controls International plc / Tyco Fire & Security Finance SCA<br>1.75%, due 9/15/30 (b)(c) | 3000000 | 2622120 |
|  Kreditanstalt fuer Wiederaufbau<br>4.375%, due 2/28/34 (b) | 4000000 | 4022956 |
|  Mastercard, Inc.<br>1.90%, due 3/15/31 (c) | 5000000 | 4388900 |
|  Nederlandse Waterschapsbank NV<br>2.375%, due 3/24/26 (b)(d) | 3500000 | 3456947 |
|  New Jersey Infrastructure Bank<br>3.00%, due 9/1/31 | 2500000 | 2332625 |
|  NXP BV / NXP Funding LLC / NXP USA, Inc.<br>5.00%, due 1/15/33 (b)(c) | 4500000 | 4488543 |
|  Prologis LP<br>1.25%, due 10/15/30 (c) | 4500000 | 3836335 |
|  Public Finance Authority<br>5.292%, due 7/1/29 | 3000000 | 3039930 |
|  Salesforce, Inc.<br>1.50%, due 7/15/28 (c) | 4500000 | 4183258 |
|  San Francisco Bay Area Rapid Transit District<br>2.622%, due 8/1/29 | 2000000 | 1888688 |

---

------

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | PRINCIPAL<br>AMOUNT | PRINCIPAL<br>AMOUNT | VALUE | VALUE |
|  Green and Sustainability Bonds — (continued) | Green and Sustainability Bonds — (continued) | Green and Sustainability Bonds — (continued) | Green and Sustainability Bonds — (continued) | Green and Sustainability Bonds — (continued) |
|  Starbucks Corporation<br>2.45%, due 6/15/26 (c) | $| 4500000 | $| 4426357 |
|  United States International Development Finance Corporation<br>2.58%, due 7/15/38 |  | 2445737 |  | 2116751 |
|  Verizon Communications, Inc.<br>3.875%, due 2/8/29 (c) |  | 3000000 |  | 2955498 |
|  Visa, Inc.<br>0.75%, due 8/15/27 (c) |  | 3500000 |  | 3280554 |
|  Xylem, Inc.<br>2.25%, due 1/30/31 (c) |  | 2500000 |  | 2205648 |
|  |  |  |  | 98646153 |
|  U.S. Government Agencies — 5.9% | U.S. Government Agencies — 5.9% | U.S. Government Agencies — 5.9% |  |  |
|  Federal Farm Credit Banks Funding Corporation<br>3.875%, due 8/15/28 |  | 4000000 |  | 3995756 |
|  Federal Farm Credit Banks Funding Corporation<br>1.14%, due 8/20/29 (c) |  | 5500000 |  | 4897558 |
|  Federal Farm Credit Banks Funding Corporation<br>3.30%, due 3/23/32 (c) |  | 5000000 |  | 4682080 |
|  Federal Home Loan Banks<br>4.75%, due 3/14/31 |  | 4000000 |  | 4125928 |
|  Federal Home Loan Banks<br>3.315%, due 11/13/35 |  | 5000000 |  | 4443255 |
|  |  |  |  | 22144577 |
|  Community Development Financial Institutions — 3.7% | Community Development Financial Institutions — 3.7% | Community Development Financial Institutions — 3.7% | Community Development Financial Institutions — 3.7% | Community Development Financial Institutions — 3.7% |
|  Capital Impact Partners<br>1.00%, due 9/15/25 (c) |  | 1500000 |  | 1492083 |
|  Capital Impact Partners<br>5.50%, due 3/15/27 |  | 3750000 |  | 3754826 |
|  Local Initiatives Support Corporation<br>1.00%, due 11/15/25 |  | 2000000 |  | 1970668 |
|  Local Initiatives Support Corporation<br>3.782%, due 3/1/27 (c) |  | 2000000 |  | 1983090 |
|  National Community Renaissance of California<br>3.27%, due 12/1/32 (c) |  | 4000000 |  | 3462012 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | PRINCIPAL<br>AMOUNT | PRINCIPAL<br>AMOUNT | VALUE |
|  Community Development Financial Institutions — (continued) | Community Development Financial Institutions — (continued) | Community Development Financial Institutions — (continued) | Community Development Financial Institutions — (continued) |
|  Reinvestment Fund, Inc. (The)<br>3.78%, due 2/15/26 | $| 1400000 | $1374831 |
|  |  |  | 14037510 |
|  Capital Goods — 0.9% |  |  |  |
|  Trane Technologies Financing Ltd.<br>3.80%, due 3/21/29 (c) |  | 3500000 | 3435055 |
|  Municipal — 0.3% |  |  |  |
|  Commonwealth of Massachusetts<br>4.11%, due 7/15/31 (c) |  | 989094 | 983050 |
|  Total Bonds & Notes<br>(Cost $142,622,126) |  |  | 139246345 |
|  SHORT-TERM INVESTMENTS — 0.7% | SHORT-TERM INVESTMENTS — 0.7% | SHORT-TERM INVESTMENTS — 0.7% |  |
|  UMB Money Market Fiduciary Account, 0.01% (e)<br>(Cost $2,630,940) |  |  | 2630940 |
|  Total Short-term Investments<br>(Cost $2,630,940) |  |  | 2630940 |
|  **TOTAL INVESTMENTS (f) — 99.8%** | **TOTAL INVESTMENTS (f) — 99.8%** | **TOTAL INVESTMENTS (f) — 99.8%** | **TOTAL INVESTMENTS (f) — 99.8%** |
| &nbsp;&nbsp;&nbsp;&nbsp; (Cost $260,477,449) |  |  | 378092990 |
| Other Assets Less Liabilities — 0.2% | Other Assets Less Liabilities — 0.2% | Other Assets Less Liabilities — 0.2% | 790784 |
|  **NET ASSETS — 100.0%** |  |  | $378883774 |

---

PLC – Public Limited Company

ADR – American Depository Receipt

REIT – Real Estate Investment Trusts

LP – Limited Partnership

LLC – Limited Liability Company

&nbsp;&nbsp;&nbsp;&nbsp;(a) Non-income producing security.

&nbsp;&nbsp;&nbsp;&nbsp;(b) Securities whose value are determined or significantly influenced by trading in markets other than the United States or Canada.

&nbsp;&nbsp;&nbsp;&nbsp;(c) Callable

&nbsp;&nbsp;&nbsp;&nbsp;(d) Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional buyers. The total value of these securities is $3,456,947.

------

GREEN CENTURY BALANCED FUND PORTFOLIO OF INVESTMENTS July 31, 2025 concluded

&nbsp;&nbsp;&nbsp;&nbsp;(e) The rate quoted is the annualized seven-day yield of the fund at the period end.

&nbsp;&nbsp;&nbsp;&nbsp;(f) The cost of investments for federal income tax purposes is $260,488,369 resulting in gross unrealized appreciation and depreciation of $128,094,321 and $10,489,700 respectively, or net unrealized appreciation of $117,604,621.

See Notes to Financial Statements

------

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS July 31, 2025

---

| | | | |
|:---|:---|:---|:---|
|  COMMON STOCKS — 99.8% |  |  |  |
|  | SHARES | VALUE | VALUE |
|  Software & Services — 20.8% |  |  |  |
|  Accenture PLC, Class A (a) | 17125 | $| 4574087 |
|  Adobe, Inc. (b) | 11637 |  | 4162439 |
|  Akamai Technologies, Inc. (b) | 3363 |  | 256631 |
|  Atlassian Corporation,<br>Class A (a)(b) | 4483 |  | 859750 |
|  Autodesk, Inc. (b) | 6407 |  | 1942026 |
|  Automatic Data Processing, Inc. | 10813 |  | 3346623 |
|  Cadence Design Systems, Inc. (b) | 7747 |  | 2824324 |
|  Cognizant Technology Solutions Corporation, Class A | 13749 |  | 986628 |
|  Dynatrace, Inc. (b) | 9070 |  | 477173 |
|  Fidelity National Information Services, Inc. | 13071 |  | 1037968 |
|  Fortinet, Inc. (b) | 18941 |  | 1892206 |
|  Gen Digital, Inc. | 15617 |  | 460545 |
|  HubSpot, Inc. (b) | 1275 |  | 662554 |
|  Intuit, Inc. | 7576 |  | 5948145 |
|  Microsoft Corporation | 184364 |  | 98358194 |
|  Okta, Inc., Class A (b) | 4334 |  | 423865 |
|  Paycom Software, Inc. | 1584 |  | 366759 |
|  PayPal Holdings, Inc. (b) | 25094 |  | 1725463 |
|  PTC, Inc. (b) | 3677 |  | 789856 |
|  Salesforce, Inc. | 26544 |  | 6857112 |
|  ServiceNow, Inc. (b) | 5702 |  | 5377670 |
|  Synopsys, Inc. (b) | 5474 |  | 3467615 |
|  Workday, Inc., Class A (b) | 6019 |  | 1380638 |
|  Zscaler, Inc. (b) | 2878 |  | 821842 |
|  |  |  | 149000113 |
|  Semiconductors & Semiconductor Equipment — 20.0% | Semiconductors & Semiconductor Equipment — 20.0% | Semiconductors & Semiconductor Equipment — 20.0% | Semiconductors & Semiconductor Equipment — 20.0% |
|  Advanced Micro Devices, Inc. (b) | 44750 |  | 7889872 |
|  Analog Devices, Inc. | 14206 |  | 3191094 |
|  Applied Materials, Inc. | 22858 |  | 4115811 |
|  Intel Corporation | 119408 |  | 2364278 |
|  Lam Research Corporation | 36508 |  | 3462419 |
|  Microchip Technology, Inc. | 15626 |  | 1056161 |
|  NVIDIA Corporation | 639125 |  | 113681164 |
|  NXP Semiconductors NV (a) | 8276 |  | 1769161 |
|  ON Semiconductor Corporation (b) | 13087 |  | 737583 |
|  Skyworks Solutions, Inc. | 5085 |  | 348526 |
|  Texas Instruments, Inc. | 25478 |  | 4613047 |
|  |  |  | 143229116 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Financial Services — 9.8% |  |  |  |
|  Ally Financial, Inc. | 6979 | $| 264155 |
|  American Express Company | 16102 |  | 4819490 |
|  Ameriprise Financial, Inc. | 2978 |  | 1543170 |
|  Bank of New York Mellon Corporation (The) | 19167 |  | 1944492 |
|  BlackRock, Inc. | 4038 |  | 4466068 |
|  Cboe Global Markets, Inc. | 2651 |  | 638997 |
|  Charles Schwab Corporation (The) | 46547 |  | 4549038 |
|  CME Group, Inc. | 9709 |  | 2701821 |
|  Equitable Holdings, Inc. | 6665 |  | 342248 |
|  FactSet Research Systems, Inc. | 907 |  | 365430 |
|  Franklin Resources, Inc. | 7876 |  | 189024 |
|  Intercontinental Exchange, Inc. | 14983 |  | 2769308 |
|  Invesco Ltd. | 5887 |  | 123686 |
|  Mastercard, Inc., Class A | 22150 |  | 12547310 |
|  Moody's Corporation | 4396 |  | 2267149 |
|  Morgan Stanley | 33636 |  | 4791785 |
|  Nasdaq, Inc. | 10356 |  | 996454 |
|  Northern Trust Corporation | 5312 |  | 690560 |
|  Raymond James Financial, Inc. | 5126 |  | 856708 |
|  S&P Global, Inc. | 8639 |  | 4760953 |
|  State Street Corporation | 8390 |  | 937583 |
|  Synchrony Financial | 10916 |  | 760518 |
| T. Rowe Price Group, Inc. | 5933 |  | 601903 |
|  Visa, Inc., Class A | 46867 |  | 16191142 |
|  Voya Financial, Inc. | 2036 |  | 142520 |
|  |  |  | 70261512 |
|  Media & Entertainment — 8.8% | Media & Entertainment — 8.8% | Media & Entertainment — 8.8% | Media & Entertainment — 8.8% |
|  Alphabet, Inc., Class A | 152623 |  | 29288354 |
|  Alphabet, Inc., Class C | 129828 |  | 25038628 |
|  Electronic Arts, Inc. | 7484 |  | 1141235 |
|  John Wiley & Sons, Inc., Class A | 1598 |  | 61683 |
|  New York Times Company (The), Class A | 6396 |  | 331888 |
|  Omnicom Group, Inc. | 6551 |  | 472000 |
|  Scholastic Corporation | 1655 |  | 40829 |
|  Walt Disney Company (The) | 48413 |  | 5766472 |
|  Warner Bros Discovery, Inc. (b) | 71529 |  | 942037 |
|  ZoomInfo Technologies, Inc. (b) | 10919 |  | 118253 |
|  |  |  | 63201379 |
|  Capital Goods — 5.4% |  |  |  |
|  3M Company | 14473 |  | 2159661 |
|  A.O. Smith Corporation | 3359 |  | 237784 |

---

------

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Capital Goods — (continued) | Capital Goods — (continued) | Capital Goods — (continued) | Capital Goods — (continued) |
|  AGCO Corporation | 1685 | $| 198779 |
|  Air Lease Corporation, Class A | 1953 |  | 108196 |
|  Allegion PLC (a) | 1944 |  | 322549 |
|  Axon Enterprise, Inc. (b) | 2004 |  | 1514002 |
|  Builders FirstSource, Inc. (b) | 2942 |  | 374016 |
|  Carrier Global Corporation | 21437 |  | 1471007 |
|  CNH Industrial NV (a) | 18432 |  | 238879 |
|  Deere & Company | 6995 |  | 3667968 |
|  Dover Corporation | 3887 |  | 704091 |
|  Eaton Corporation PLC | 10868 |  | 4181137 |
|  EMCOR Group, Inc. | 1496 |  | 938725 |
|  Fastenal Company | 34502 |  | 1591577 |
|  Ferguson Enterprises, Inc. | 5547 |  | 1238812 |
|  Fortive Corporation | 7597 |  | 364124 |
|  Fortune Brands Innovations, Inc. | 1307 |  | 71284 |
|  Granite Construction, Inc. | 813 |  | 76804 |
|  Hubbell, Inc. | 1387 |  | 606785 |
|  IDEX Corporation | 1444 |  | 236108 |
|  Illinois Tool Works, Inc. | 8108 |  | 2075405 |
|  Lennox International, Inc. | 975 |  | 593775 |
|  Lincoln Electric Holdings, Inc. | 1338 |  | 325803 |
|  Masco Corporation | 4719 |  | 321506 |
|  Middleby Corporation (The) (b) | 1216 |  | 176563 |
|  Owens Corning | 2090 |  | 291409 |
|  PACCAR, Inc. | 14446 |  | 1426687 |
|  Pentair PLC (a) | 3640 |  | 372008 |
|  Quanta Services, Inc. | 4112 |  | 1670007 |
|  Rockwell Automation, Inc. | 3044 |  | 1070605 |
|  Roper Technologies, Inc. | 3272 |  | 1800909 |
|  Sensata Technologies Holding PLC | 4003 |  | 123132 |
|  Snap-on, Inc. | 1323 |  | 424934 |
|  Stanley Black & Decker, Inc. | 3879 |  | 262414 |
|  Timken Company (The) | 787 |  | 59883 |
|  Trane Technologies PLC | 6250 |  | 2738000 |
|  United Rentals, Inc. | 1808 |  | 1596356 |
|  W.W. Grainger, Inc. | 1376 |  | 1430407 |
|  Westinghouse Air Brake Technologies Corporation | 4239 |  | 814100 |
|  Xylem, Inc. | 6520 |  | 942922 |
|  |  |  | 38819113 |
|  Pharmaceuticals, Biotechnology & Life Sciences — 5.2% | Pharmaceuticals, Biotechnology & Life Sciences — 5.2% | Pharmaceuticals, Biotechnology & Life Sciences — 5.2% | Pharmaceuticals, Biotechnology & Life Sciences — 5.2% |
|  AbbVie, Inc. | 47251 |  | 8931384 |
|  Agilent Technologies, Inc. | 7675 |  | 881167 |
|  Amgen, Inc. | 14420 |  | 4255342 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Pharmaceuticals, Biotechnology & Life Sciences — (continued) | Pharmaceuticals, Biotechnology & Life Sciences — (continued) | Pharmaceuticals, Biotechnology & Life Sciences — (continued) | Pharmaceuticals, Biotechnology & Life Sciences — (continued) |
|  Biogen, Inc. (b) | 3795 | $| 485760 |
|  BioMarin Pharmaceutical, Inc. (b) | 4990 |  | 288672 |
|  Bio-Techne Corporation | 3391 |  | 185589 |
|  Bristol-Myers Squibb Company | 53742 |  | 2327566 |
|  Danaher Corporation | 17405 |  | 3431570 |
|  Gilead Sciences, Inc. | 33446 |  | 3755651 |
|  Illumina, Inc. (b) | 3790 |  | 389271 |
|  IQVIA Holdings, Inc. (b) | 4404 |  | 818527 |
|  Jazz Pharmaceuticals PLC (a)(b) | 1058 |  | 121279 |
|  Merck & Company, Inc. | 68713 |  | 5367860 |
|  Mettler-Toledo International, Inc. (b) | 580 |  | 715534 |
|  Vertex Pharmaceuticals, Inc. (b) | 6883 |  | 3144636 |
|  Waters Corporation (b) | 1229 |  | 354886 |
|  Zoetis, Inc. | 11800 |  | 1720322 |
|  |  |  | 37175016 |
|  Renewable Energy & Energy Efficiency — 3.7% | Renewable Energy & Energy Efficiency — 3.7% | Renewable Energy & Energy Efficiency — 3.7% | Renewable Energy & Energy Efficiency — 3.7% |
|  Acuity, Inc. | 764 |  | 237871 |
|  First Solar, Inc. (b) | 3066 |  | 535722 |
|  Itron, Inc. (b) | 1131 |  | 140855 |
|  Johnson Controls International, PLC (a) | 17112 |  | 1796760 |
|  Ormat Technologies, Inc. | 1011 |  | 90394 |
|  Tesla, Inc. (b) | 77677 |  | 23945489 |
|  |  |  | 26747091 |
|  Equity Real Estate Investment Trusts (REITs) — 2.9% | Equity Real Estate Investment Trusts (REITs) — 2.9% | Equity Real Estate Investment Trusts (REITs) — 2.9% | Equity Real Estate Investment Trusts (REITs) — 2.9% |
|  American Tower Corporation REIT | 12577 |  | 2620921 |
|  AvalonBay Communities, Inc. REIT | 3485 |  | 649186 |
|  BXP, Inc. REIT | 3231 |  | 211404 |
|  CBRE Group, Inc., Class A (b) | 8967 |  | 1396521 |
|  COPT Defense Properties REIT | 1146 |  | 31263 |
|  Crown Castle, Inc. REIT | 11402 |  | 1198236 |
|  Digital Realty Trust, Inc. REIT | 9199 |  | 1623072 |
|  Equinix, Inc. REIT | 2464 |  | 1934659 |
|  Equity Residential REIT | 8421 |  | 532207 |
|  Federal Realty Investment Trust REIT | 924 |  | 85156 |
|  Healthpeak Properties, Inc. | 13234 |  | 224184 |
|  Host Hotels & Resorts, Inc. REIT | 19368 |  | 304465 |
|  Iron Mountain, Inc. REIT | 7931 |  | 772162 |

---

------

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | |
|:---|:---|:---|
|  | SHARES | VALUE |
|  Equity Real Estate Investment Trusts (REITs) — (continued) | Equity Real Estate Investment Trusts (REITs) — (continued) | Equity Real Estate Investment Trusts (REITs) — (continued) |
|  Jones Lang LaSalle, Inc. (b) | 1577 | $426358 |
|  Macerich Company (The) REIT | 6763 | 113010 |
|  Prologis, Inc. REIT | 25901 | 2765709 |
|  SBA Communications Corporation, Class A REIT | 2712 | 609441 |
|  Simon Property Group, Inc. REIT | 8860 | 1451179 |
|  UDR, Inc. REIT | 3412 | 134057 |
|  Ventas, Inc. REIT | 11257 | 756245 |
|  Welltower, Inc. REIT | 18203 | 3004769 |
|  |  | 20844204 |
|  Consumer Services — 2.9% |  |  |
|  Aramark | 6130 | 260893 |
|  Booking Holdings, Inc. | 915 | 5036215 |
|  Darden Restaurants, Inc. | 3006 | 606220 |
|  Domino's Pizza, Inc. | 851 | 394192 |
|  Hilton Worldwide Holdings, Inc. | 6861 | 1839297 |
|  Jack in the Box, Inc. | 207 | 4078 |
|  Marriott International, Inc., Class A | 6914 | 1824120 |
|  McDonald's Corporation | 18888 | 5667722 |
|  Royal Caribbean Cruises Ltd. | 7387 | 2348106 |
|  Starbucks Corporation | 30837 | 2749427 |
|  Vail Resorts, Inc. | 592 | 88954 |
|  |  | 20819224 |
|  Healthcare Equipment & Services — 2.9% | Healthcare Equipment & Services — 2.9% |  |
|  Align Technology, Inc. (b) | 1933 | 249376 |
|  Becton, Dickinson & Company | 7556 | 1346857 |
|  Cardinal Health, Inc. | 6937 | 1076761 |
|  Cencora, Inc. | 5397 | 1543974 |
|  Centene Corporation (b) | 13260 | 345688 |
|  Cigna Group (The) | 7359 | 1967649 |
|  Cooper Cos., Inc. (The) (b) | 4649 | 328638 |
|  DaVita, Inc. (b) | 938 | 131667 |
|  DENTSPLY SIRONA, Inc. | 3941 | 56396 |
|  Dexcom, Inc. (b) | 10490 | 847277 |
|  Edwards Lifesciences Corporation (b) | 16729 | 1326777 |
|  Elevance Health, Inc. | 6229 | 1763305 |
|  HCA Healthcare, Inc. | 5192 | 1837916 |
|  Henry Schein, Inc. (b) | 2611 | 176634 |
|  Hologic, Inc. (b) | 4067 | 271757 |
|  Humana, Inc. | 3244 | 810578 |
|  IDEXX Laboratories, Inc. (b) | 2306 | 1232119 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Healthcare Equipment & Services — (continued) | Healthcare Equipment & Services — (continued) | Healthcare Equipment & Services — (continued) | Healthcare Equipment & Services — (continued) |
|  Insulet Corporation (b) | 1861 | $| 536712 |
|  Labcorp Holdings, Inc. | 2089 |  | 543307 |
|  Pediatrix Medical Group, Inc. (b) | 1578 |  | 19331 |
|  Quest Diagnostics, Inc. | 2833 |  | 474273 |
|  ResMed, Inc. | 4268 |  | 1160640 |
|  Select Medical Holdings Corporation | 1031 |  | 15249 |
|  STERIS PLC | 2397 |  | 542897 |
|  Teladoc Health, Inc. (b) | 2971 |  | 21421 |
|  Veeva Systems, Inc., Class A (b) | 4178 |  | 1187388 |
|  West Pharmaceutical Services, Inc. | 1848 |  | 442152 |
|  Zimmer Biomet Holdings, Inc. | 4538 |  | 415908 |
|  |  |  | 20672647 |
|  Food & Beverage — 2.8% |  |  |  |
|  Bunge Global SA | 3671 |  | 292799 |
|  Campbell Soup Company (The) | 1763 |  | 56275 |
|  Coca-Cola Company (The) | 112389 |  | 7630089 |
|  Conagra Brands, Inc. | 7849 |  | 143323 |
|  Darling Ingredients, Inc. (b) | 3614 |  | 117021 |
|  General Mills, Inc. | 13160 |  | 644577 |
|  Hormel Foods Corporation | 7838 |  | 220169 |
|  Ingredion, Inc. | 1433 |  | 188497 |
|  JM Smucker Company (The) | 1517 |  | 162835 |
|  Kellanova | 7176 |  | 572860 |
|  Keurig Dr Pepper, Inc. | 33364 |  | 1089335 |
|  Kraft Heinz Company (The) | 23336 |  | 640807 |
|  Lamb Weston Holdings, Inc. | 3449 |  | 196834 |
|  McCormick & Company, Inc. | 5559 |  | 392632 |
|  Mondelez International, Inc., Class A | 34906 |  | 2258069 |
|  PepsiCo, Inc. | 38084 |  | 5252545 |
|  |  |  | 19858667 |
|  Consumer Discretionary Distribution & Retail — 2.6% | Consumer Discretionary Distribution & Retail — 2.6% | Consumer Discretionary Distribution & Retail — 2.6% | Consumer Discretionary Distribution & Retail — 2.6% |
|  AutoNation, Inc. (b) | 278 |  | 53554 |
|  Best Buy Company, Inc. | 5363 |  | 348917 |
|  Buckle, Inc. (The) | 839 |  | 41421 |
|  CarMax, Inc. (b) | 4038 |  | 228591 |
|  Foot Locker, Inc. (b) | 2330 |  | 58343 |
|  GameStop Corporation,<br>Class A (b) | 11185 |  | 251103 |
|  Gap, Inc. (The) | 4332 |  | 84301 |
|  Home Depot, Inc. (The) | 27156 |  | 9980102 |
|  Kohl's Corporation | 1112 |  | 12054 |
|  LKQ Corporation | 5185 |  | 152802 |

---

------

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | |
|:---|:---|:---|
|  | SHARES | VALUE |
|  Consumer Discretionary Distribution & Retail — (continued) | Consumer Discretionary Distribution & Retail — (continued) | Consumer Discretionary Distribution & Retail — (continued) |
|  Lowe's Companies, Inc. | 15502 | $3465782 |
|  Pool Corporation | 722 | 222477 |
|  Signet Jewelers Ltd. | 1155 | 91360 |
|  Target Corporation | 12458 | 1252029 |
|  Tractor Supply Company | 14062 | 800831 |
|  Ulta Beauty, Inc. (b) | 1310 | 674663 |
|  Williams-Sonoma, Inc. | 3234 | 604920 |
|  |  | 18323250 |
|  Insurance — 2.4% |  |  |
|  Allstate Corporation (The) | 6958 | 1414214 |
|  Arthur J. Gallagher & Company | 6665 | 1914521 |
|  Chubb Ltd. (a) | 10262 | 2730102 |
|  Hartford Insurance Group, Inc. (The) | 7171 | 892001 |
|  Lincoln National Corporation | 2592 | 98781 |
|  Marsh & McLennan Companies, Inc. | 13054 | 2600357 |
|  Principal Financial Group, Inc. | 5857 | 455850 |
|  Progressive Corporation (The) | 16287 | 3942105 |
|  Prudential Financial, Inc. | 8165 | 845731 |
|  Travelers Companies, Inc. (The) | 6084 | 1583300 |
|  Willis Towers Watson PLC (a) | 1928 | 608882 |
|  |  | 17085844 |
|  Materials — 2.1% |  |  |
|  Albemarle Corporation | 2565 | 174035 |
|  Amcor PLC (a) | 60133 | 562243 |
|  Avery Dennison Corporation | 2174 | 364732 |
|  Axalta Coating Systems Ltd. (b) | 2208 | 62531 |
|  Ball Corporation | 7599 | 435119 |
|  Compass Minerals International, Inc. (b) | 373 | 7434 |
|  CRH PLC | 19507 | 1861943 |
|  H.B. Fuller Company | 428 | 24054 |
|  International Flavors & Fragrances, Inc. | 5800 | 411974 |
|  Linde PLC (a) | 13086 | 6022962 |
|  Mosaic Company (The) | 8402 | 302556 |
|  Newmont Corporation | 30300 | 1881630 |
|  PPG Industries, Inc. | 5464 | 576452 |
|  Sealed Air Corporation | 3243 | 94923 |
|  Sherwin-Williams Company (The) | 6500 | 2150720 |
|  Sonoco Products Company | 2893 | 130387 |
|  |  | 15063695 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Household & Personal Products — 2.0% | Household & Personal Products — 2.0% |  |  |
|  Church & Dwight Company, Inc. | 5982 | $| 560932 |
|  Clorox Company (The) | 2520 |  | 316411 |
|  Colgate-Palmolive Company | 22385 |  | 1876982 |
|  Estee Lauder Companies, Inc. (The), Class A | 6147 |  | 573761 |
|  Kimberly-Clark Corporation | 9104 |  | 1134541 |
|  Procter & Gamble Company (The) | 64705 |  | 9736161 |
|  |  |  | 14198788 |
|  Technology Hardware & Equipment — 1.6% | Technology Hardware & Equipment — 1.6% | Technology Hardware & Equipment — 1.6% | Technology Hardware & Equipment — 1.6% |
|  Cognex Corporation | 4789 |  | 195248 |
|  Corning, Inc. | 22038 |  | 1393683 |
|  Dell Technologies, Inc., Class C | 8740 |  | 1159711 |
|  F5, Inc. (b) | 1746 |  | 547231 |
|  Flex Ltd. (b) | 10904 |  | 543782 |
|  Hewlett Packard Enterprise Company | 36793 |  | 761247 |
|  HP, Inc. | 26193 |  | 649586 |
|  Keysight Technologies, Inc. (b) | 4654 |  | 762837 |
|  Motorola Solutions, Inc. | 4574 |  | 2007895 |
|  NetApp, Inc. | 5645 |  | 587814 |
|  TE Connectivity PLC (a) | 9190 |  | 1890843 |
|  Trimble, Inc. (b) | 7063 |  | 592515 |
|  Zebra Technologies Corporation, Class A (b) | 1455 |  | 493274 |
|  |  |  | 11585666 |
|  Banks — 1.0% |  |  |  |
|  Bank of Hawaii Corporation | 607 |  | 37561 |
|  Cathay General Bancorp | 414 |  | 18721 |
|  Citizens Financial Group, Inc. | 11348 |  | 541527 |
|  Comerica, Inc. | 2008 |  | 135681 |
|  Huntington Bancshares, Inc. | 45654 |  | 750095 |
|  International Bancshares Corporation | 526 |  | 35863 |
|  KeyCorp | 18715 |  | 335373 |
|  M&T Bank Corporation | 4255 |  | 802918 |
|  Old National Bancorp | 4721 |  | 99660 |
|  PNC Financial Services Group, Inc. (The) | 11568 |  | 2201043 |
|  Regions Financial Corporation | 23294 |  | 590037 |
|  Truist Financial Corporation | 34803 |  | 1521239 |
|  Zions Bancorp N A | 1345 |  | 72119 |
|  |  |  | 7141837 |

---

------

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Telecommunication Services — 0.7% | Telecommunication Services — 0.7% |  |  |
|  Lumen Technologies Inc. (b) | 28480 | $| 126736 |
|  Verizon Communications, Inc. | 118404 |  | 5062955 |
|  |  |  | 5189691 |
|  Consumer Durables & Apparel — 0.7% | Consumer Durables & Apparel — 0.7% | Consumer Durables & Apparel — 0.7% | Consumer Durables & Apparel — 0.7% |
|  Capri Holdings Ltd. (a)(b) | 2975 |  | 54115 |
|  Columbia Sportswear Company. | 813 |  | 45991 |
|  Deckers Outdoor Corporation (b) | 4597 |  | 488064 |
|  Ethan Allen Interiors, Inc. | 161 |  | 4793 |
|  Garmin Ltd. (a) | 4288 |  | 938043 |
|  Hasbro, Inc. | 2347 |  | 176401 |
|  La-Z-Boy, Inc. | 44 |  | 1583 |
|  Mattel, Inc. (b) | 7909 |  | 134532 |
|  Meritage Homes Corporation | 872 |  | 58720 |
|  Mohawk Industries, Inc. (b) | 1248 |  | 142908 |
|  Newell Brands, Inc. | 10704 |  | 60049 |
|  NIKE, Inc., Class B | 32302 |  | 2412636 |
|  PVH Corporation | 916 |  | 67253 |
|  Topgolf Callaway Brands Corporation (b) | 2538 |  | 23477 |
|  Under Armour, Inc., Class A (b) | 404 |  | 2683 |
|  Under Armour, Inc., Class C (b) | 10090 |  | 63567 |
|  VF Corporation | 6548 |  | 76743 |
|  Whirlpool Corporation | 1306 |  | 108450 |
|  Wolverine World Wide, Inc. | 1704 |  | 38476 |
|  |  |  | 4898484 |
|  Commercial & Professional Services — 0.6% | Commercial & Professional Services — 0.6% | Commercial & Professional Services — 0.6% | Commercial & Professional Services — 0.6% |
|  ASGN, Inc. (b) | 664 |  | 33293 |
|  Broadridge Financial Solutions, Inc. | 2623 |  | 649219 |
|  Copart, Inc. (b) | 28036 |  | 1270872 |
|  Exponent, Inc. | 1789 |  | 123369 |
|  Heidrick & Struggles International, Inc. | 612 |  | 27252 |
|  HNI Corporation | 983 |  | 50566 |
|  ICF International, Inc. | 348 |  | 29194 |
|  Interface, Inc. | 738 |  | 15218 |
|  Jacobs Solutions, Inc. | 2402 |  | 340772 |
|  ManpowerGroup, Inc. | 1325 |  | 54656 |
|  Robert Half, Inc. | 96 |  | 3543 |
|  Steelcase, Inc., Class A | 621 |  | 6415 |
|  Tetra Tech, Inc. | 6870 |  | 252404 |
|  TransUnion | 4926 |  | 468906 |
|  Veralto Corporation | 6468 |  | 678040 |
|  |  |  | 4003719 |

---

---

| | | |
|:---|:---|:---|
|  | SHARES | VALUE |
|  Transportation — 0.5% |  |  |
|  ArcBest Corporation | 735 | $53751 |
|  Avis Budget Group, Inc. (b) | 506 | 86141 |
|  C.H. Robinson Worldwide, Inc. | 3134 | 361413 |
|  Expeditors International of |  |  |
|  Washington, Inc. | 4847 | 563415 |
|  J.B. Hunt Transport Services, Inc. | 2089 | 300921 |
|  Ryder System, Inc. | 862 | 153186 |
|  U-Haul Holding Company | 2116 | 110032 |
|  United Parcel Service, Inc., Class B | 20444 | 1761455 |
|  |  | 3390314 |
|  Automobiles & Components — 0.2% | Automobiles & Components — 0.2% |  |
|  Aptiv PLC (b) | 6162 | 422960 |
|  Autoliv, Inc. (a) | 1888 | 210606 |
|  BorgWarner, Inc. | 5322 | 195850 |
|  Harley-Davidson, Inc. | 2603 | 63331 |
|  Rivian Automotive, Inc.,<br>Class A (b) | 19934 | 256550 |
|  |  | 1149297 |
|  Consumer Staples Distribution & Retail — 0.1% | Consumer Staples Distribution & Retail — 0.1% | Consumer Staples Distribution & Retail — 0.1% |
|  Sysco Corporation | 11863 | 944295 |
|  Utilities — 0.1% |  |  |
|  American Water Works Company, Inc. | 5035 | 706108 |
|  Healthy Living — 0.0% |  |  |
|  United Natural Foods, Inc. (b) | 719 | 19873 |
|  Total Common Stocks<br>(Cost $246,488,339) |  | 714328943 |
|  SHORT-TERM INVESTMENTS — 0.2% | SHORT-TERM INVESTMENTS — 0.2% | SHORT-TERM INVESTMENTS — 0.2% |
|  UMB Money Market Fiduciary Account, 0.01% (c)<br>(Cost $1,315,852) |  | 1315852 |
|  Total Short-term Investments<br>(Cost $1,315,852) |  | 1315852 |
|  **TOTAL INVESTMENTS (d) — 100.0%** | **TOTAL INVESTMENTS (d) — 100.0%** | **TOTAL INVESTMENTS (d) — 100.0%** |
| &nbsp;&nbsp;&nbsp;&nbsp; (Cost $247,804,191) |  | 715644795 |
|  Liabilites Less Other Assets — (0.0)% |  | (322563) |
|  **NET ASSETS — 100.0%** | **NET ASSETS — 100.0%** | $715322232 |

---

PLC – Public Limited Company

REIT – Real Estate Investment Trusts

------

GREEN CENTURY EQUITY FUND PORTFOLIO OF INVESTMENTS July 31, 2025 concluded

&nbsp;&nbsp;&nbsp;&nbsp;(a) Securities whose value are determined or significantly influenced by trading in markets other than the United States or Canada.

&nbsp;&nbsp;&nbsp;&nbsp;(b) Non-income producing security.

&nbsp;&nbsp;&nbsp;&nbsp;(c) The rate quoted is the annualized seven-day yield of the fund at the period end.

&nbsp;&nbsp;&nbsp;&nbsp;(d) The cost of investments for federal income tax purposes is $253,906,770 resulting in gross unrealized appreciation and depreciation of $478,344,687 and $16,606,662 respectively, or net unrealized appreciation of $461,738,025.

See Notes to Financial Statements

------

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS July 31, 2025

---

| | | |
|:---|:---|:---|
|  COMMON STOCKS — 98.6% |  |  |
|  | SHARES | VALUE |
|  Japan — 22.8% | Japan — 22.8% | Japan — 22.8% |
|  Ajinomoto Company, Inc. | 30900 | $817504 |
|  ANA Holdings, Inc. | 5500 | 101984 |
|  Asahi Kasei Corporation | 41800 | 290834 |
|  Bridgestone Corporation | 19500 | 788779 |
|  Concordia Financial Group Ltd. | 35000 | 232093 |
|  Daiwa Securities Group, Inc. | 45500 | 316765 |
|  FANUC Corporation | 32331 | 899997 |
|  Fujitsu Ltd. | 60100 | 1309213 |
|  Hankyu Hanshin Holdings, Inc. | 7900 | 205887 |
|  Hitachi Ltd. | 133415 | 4082586 |
|  Hoya Corporation | 11801 | 1488847 |
|  JFE Holdings, Inc. | 20000 | 231461 |
|  Kao Corp. | 15900 | 715444 |
|  KDDI Corp. | 104734 | 1718854 |
|  LY Corporation | 97700 | 357110 |
|  MatsukiyoCocokara & Company | 11200 | 229989 |
|  MEIJI Holdings Company Ltd. | 8300 | 167834 |
|  Mitsubishi Chemical Group Corporation | 45500 | 247828 |
|  Mitsubishi Estate Company Ltd. | 36300 | 679624 |
|  Nitto Denko Corporation | 24100 | 498723 |
|  Nomura Research Institute Ltd. | 12914 | 511013 |
|  Oriental Land Company Ltd. | 36900 | 759790 |
|  Pan Pacific International Holdings Corporation | 13000 | 434932 |
|  Rakuten Group, Inc. (a) | 51500 | 260575 |
|  Recruit Holdings Company Ltd. | 48000 | 2847896 |
|  Ricoh Company Ltd. | 18800 | 164848 |
|  Secom Company Ltd. | 14300 | 513559 |
|  Sekisui House Ltd. | 20300 | 425830 |
|  Shiseido Company Ltd. | 13900 | 225952 |
|  SoftBank Corporation | 977270 | 1411996 |
|  Sompo Holdings, Inc. | 30384 | 895935 |
|  Sony Group Corporation | 148680 | 3576247 |
|  Sumitomo Metal Mining Company, Ltd. | 8400 | 184761 |
|  Sumitomo Mitsui Financial Group, Inc. | 125973 | 3177872 |
|  Sysmex Corporation | 17200 | 279429 |
|  T&D Holdings, Inc. | 16700 | 407793 |
|  Tokio Marine Holdings, Inc. | 62700 | 2517588 |
|  Tokyo Electron Ltd. | 15300 | 2432376 |
|  Tokyu Corp. | 17400 | 195867 |
|  Toray Industries, Inc. | 47400 | 324209 |
|  Unicharm Corporation | 38200 | 264235 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Japan — (continued) | Japan — (continued) | Japan — (continued) | Japan — (continued) |
|  Yamaha Motor Company Ltd. | 31000 | $| 224218 |
|  ZOZO, Inc. | 13900 |  | 137601 |
|  |  |  | 37555878 |
|  Canada — 11.6% | Canada — 11.6% | Canada — 11.6% | Canada — 11.6% |
|  Agnico Eagle Mines Ltd. | 13022 |  | 1616566 |
|  Bank of Nova Scotia (The) | 29643 |  | 1649234 |
|  CGI, Inc. | 6864 |  | 661730 |
|  Dollarama, Inc. | 9457 |  | 1292557 |
|  Element Fleet Management Corporation | 13764 |  | 358007 |
|  FirstService Corporation | 1418 |  | 279507 |
|  iA Financial Corporation, Inc. | 3184 |  | 311667 |
|  Metro, Inc. | 7118 |  | 544278 |
|  National Bank of Canada | 13348 |  | 1388458 |
|  Open Text Corporation | 8839 |  | 260143 |
|  RB Global, Inc. | 6319 |  | 684209 |
|  Saputo, Inc. | 8414 |  | 176466 |
|  Shopify, Inc. (a) | 19628 |  | 2399245 |
|  Sun Life Financial, Inc. | 19551 |  | 1192024 |
|  TELUS Corporation | 17045 |  | 274570 |
|  Thomson Reuters Corporation | 5377 |  | 1079125 |
|  TMX Group Ltd. | 9494 |  | 386036 |
|  Toronto-Dominion Bank (The) | 30106 |  | 2192767 |
|  West Fraser Timber Company Ltd. | 1817 |  | 125968 |
|  Wheaton Precious Metals Corporation | 15487 |  | 1416363 |
|  WSP Global, Inc. | 4454 |  | 917095 |
|  |  |  | 19206015 |
|  United Kingdom — 10.5% | United Kingdom — 10.5% | United Kingdom — 10.5% | United Kingdom — 10.5% |
|  3i Group PLC | 33230 |  | 1815766 |
|  Admiral Group PLC | 8901 |  | 401228 |
|  Auto Trader Group PLC (b) | 29993 |  | 331119 |
|  Barratt Redrow PLC | 46433 |  | 228657 |
|  Croda International PLC | 4574 |  | 157427 |
|  Informa PLC | 44994 |  | 514508 |
|  Intertek Group PLC | 5459 |  | 354945 |
|  Kingfisher PLC | 60078 |  | 213629 |
|  Land Securities Group PLC REIT | 23947 |  | 182117 |
|  Legal & General Group PLC | 200278 |  | 677565 |
|  London Stock Exchange Group PLC | 16270 |  | 1983240 |
|  M&G PLC | 77969 |  | 268361 |
|  Mondi PLC | 14867 |  | 200975 |
|  Pearson PLC | 20362 |  | 287940 |
|  Phoenix Group Holdings PLC | 23689 |  | 207163 |

---

------

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  United Kingdom — (continued) | United Kingdom — (continued) | United Kingdom — (continued) | United Kingdom — (continued) |
|  RELX PLC | 63066 | $| 3276992 |
|  Schroders PLC | 25219 |  | 129629 |
|  Segro PLC REIT | 43785 |  | 373167 |
|  Smiths Group PLC | 11466 |  | 355175 |
|  Spirax Group PLC | 2552 |  | 213268 |
|  Unilever PLC | 85394 |  | 4954623 |
|  Whitbread PLC | 6000 |  | 241026 |
|  |  |  | 17368520 |
|  Switzerland — 10.2% | Switzerland — 10.2% | Switzerland — 10.2% | Switzerland — 10.2% |
|  ABB Ltd. | 53971 |  | 3523988 |
|  Alcon, Inc. | 17048 |  | 1494471 |
|  Banque Cantonale Vaudoise | 1040 |  | 120346 |
|  DSM-Firmenich AG | 6342 |  | 609316 |
|  Givaudan SA | 315 |  | 1316729 |
|  Julius Baer Group Ltd. | 7024 |  | 475245 |
|  Kuehne + Nagel International AG | 1640 |  | 334341 |
|  Lonza Group AG | 2465 |  | 1717923 |
|  SGS SA | 5495 |  | 558331 |
|  SIG Group AG (a) | 10649 |  | 172277 |
|  Sonova Holding AG | 1728 |  | 470346 |
|  Straumann Holding AG | 3804 |  | 463451 |
|  Swiss Re AG | 10296 |  | 1842885 |
|  VAT Group AG (b) | 919 |  | 321804 |
|  Zurich Insurance Group AG | 4996 |  | 3407595 |
|  |  |  | 16829048 |
|  France — 9.0% | France — 9.0% | France — 9.0% | France — 9.0% |
|  Amundi SA (b) | 2064 |  | 152526 |
|  AXA SA | 60483 |  | 2937515 |
|  Cie Generale des Etablissements Michelin SCA | 22895 |  | 814496 |
|  Credit Agricole SA | 36151 |  | 665322 |
|  Danone SA | 22037 |  | 1803380 |
|  Eurazeo SE | 1385 |  | 81269 |
|  Hermes International SCA | 1081 |  | 2643486 |
|  Publicis Groupe SA | 7805 |  | 713210 |
|  Rexel SA | 7609 |  | 229970 |
|  Schneider Electric SE | 18663 |  | 4829700 |
|  |  |  | 14870874 |
|  Netherlands — 8.2% | Netherlands — 8.2% | Netherlands — 8.2% | Netherlands — 8.2% |
|  Akzo Nobel NV | 5818 |  | 365367 |
|  Argenx SE (a) | 2084 |  | 1399630 |
|  ASML Holding NV | 10496 |  | 7274257 |
|  Koninklijke KPN NV | 132773 |  | 593138 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Netherlands — (continued) | Netherlands — (continued) | Netherlands — (continued) | Netherlands — (continued) |
|  Prosus NV (a) | 44656 | $| 2550926 |
|  Wolters Kluwer NV | 8140 |  | 1267835 |
|  |  |  | 13451153 |
|  Australia — 5.8% | Australia — 5.8% | Australia — 5.8% | Australia — 5.8% |
|  ASX Ltd. | 6603 |  | 295966 |
|  BlueScope Steel Ltd. | 14826 |  | 224760 |
|  Brambles Ltd. | 46910 |  | 717677 |
|  Cochlear Ltd. | 2232 |  | 455657 |
|  CSL Ltd. | 16527 |  | 2858831 |
|  Evolution Mining Ltd. | 68400 |  | 309552 |
|  Goodman Group | 69324 |  | 1549938 |
|  Northern Star Resources Ltd. | 46366 |  | 460648 |
|  QBE Insurance Group Ltd. | 51573 |  | 765024 |
|  Suncorp Group Ltd. | 36971 |  | 495574 |
|  Transurban Group | 106056 |  | 938549 |
|  WiseTech Global Ltd. | 6851 |  | 518881 |
|  |  |  | 9591057 |
|  Denmark — 5.5% | Denmark — 5.5% | Denmark — 5.5% | Denmark — 5.5% |
|  DSV A/S | 6975 |  | 1562981 |
|  Genmab A/S (a) | 2187 |  | 470852 |
|  Novo Nordisk A/S, Class B | 104493 |  | 4859723 |
|  Novonesis (Novozymes) B | 12030 |  | 778306 |
|  Pandora A/S. | 2799 |  | 462099 |
|  Tryg A/S | 11582 |  | 279378 |
|  Vestas Wind Systems A/S | 34447 |  | 628932 |
|  |  |  | 9042271 |
|  Germany — 3.2% | Germany — 3.2% | Germany — 3.2% | Germany — 3.2% |
|  adidas AG | 5834 |  | 1115009 |
|  Deutsche Boerse AG | 6428 |  | 1860120 |
|  GEA Group AG | 4999 |  | 359068 |
|  Henkel AG & Company KGaA | 3556 |  | 252860 |
|  Henkel AG & Company KGaA (c) | 5763 |  | 444077 |
|  LEG Immobilien SE | 2505 |  | 198824 |
|  Merck KGaA | 4407 |  | 550788 |
|  QIAGEN NV | 7378 |  | 365831 |
|  Sartorius AG (c) | 905 |  | 192715 |
|  |  |  | 5339292 |
|  Sweden — 2.3% | Sweden — 2.3% | Sweden — 2.3% | Sweden — 2.3% |
|  Boliden AB (a) | 9680 |  | 296296 |
|  EQT AB | 12700 |  | 424484 |
|  Essity AB, Class B | 20560 |  | 506956 |
|  Nibe Industrier AB B Shares | 52498 |  | 242246 |

---

------

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS July 31, 2025 continued

---

| | | | |
|:---|:---|:---|:---|
|  | SHARES | VALUE | VALUE |
|  Sweden — (continued) | Sweden — (continued) | Sweden — (continued) | Sweden — (continued) |
|  Sandvik AB | 36374 | $| 887509 |
|  Svenska Cellulosa AB SCA, Class B | 20655 |  | 259036 |
|  Svenska Handelsbanken AB A Shares | 49799 |  | 606767 |
|  Tele2 AB B Shares | 18471 |  | 285470 |
|  Telia Company AB | 80732 |  | 285121 |
|  |  |  | 3793885 |
|  Hong Kong — 2.2% | Hong Kong — 2.2% | Hong Kong — 2.2% | Hong Kong — 2.2% |
|  AIA Group Ltd. | 365249 |  | 3405647 |
|  MTR Corporation Ltd. | 52667 |  | 189457 |
|  |  |  | 3595104 |
|  Italy — 1.6% | Italy — 1.6% | Italy — 1.6% | Italy — 1.6% |
|  FinecoBank Banca Fineco SpA | 20839 |  | 443731 |
|  Generali | 29477 |  | 1099627 |
|  Mediobanca Banca di Credito Finanziario SpA | 17054 |  | 375454 |
|  Moncler SpA | 7964 |  | 424727 |
|  Poste Italiane SpA (b) | 15563 |  | 336227 |
|  |  |  | 2679766 |
|  Finland — 1.5% | Finland — 1.5% | Finland — 1.5% | Finland — 1.5% |
|  Elisa Oyj | 4836 |  | 248817 |
|  Kesko Oyj B Shares | 9318 |  | 202655 |
|  Kone Oyj, Class B | 11596 |  | 712068 |
|  Metso Oyj | 21178 |  | 265971 |
|  Sampo Oyj A Shares | 82664 |  | 887258 |
|  Stora Enso Oyj R Shares | 20252 |  | 208376 |
|  |  |  | 2525145 |
|  Spain — 1.4% | Spain — 1.4% | Spain — 1.4% | Spain — 1.4% |
|  ACS Actividades de Construccion y Servicios SA | 6397 |  | 441472 |
|  Amadeus IT Group SA | 15362 |  | 1233432 |
|  Cellnex Telecom SA (b) | 16845 |  | 594433 |
|  |  |  | 2269337 |
|  Norway — 1.1% | Norway — 1.1% | Norway — 1.1% | Norway — 1.1% |
|  DNB Bank ASA | 30591 |  | 773945 |
|  Gjensidige Forsikring ASA | 6914 |  | 181863 |
|  Mowi ASA | 15791 |  | 294147 |
|  Orkla ASA | 23657 |  | 248778 |
|  Telenor ASA | 20972 |  | 321729 |
|  |  |  | 1820462 |

---

---

| | | |
|:---|:---|:---|
|  | SHARES | VALUE |
|  Belgium — 0.7% | Belgium — 0.7% | Belgium — 0.7% |
|  Ageas SA | 5083 | $345594 |
|  KBC Group NV | 7832 | 816881 |
|  |  | 1162475 |
|  Ireland — 0.6% | Ireland — 0.6% | Ireland — 0.6% |
|  James Hardie Industries PLC (a) | 19737 | 518031 |
|  Kerry Group PLC, Class A | 5636 | 520581 |
|  |  | 1038612 |
|  Jersey — 0.1% | Jersey — 0.1% | Jersey — 0.1% |
|  WPP PLC | 37565 | 203393 |
|  Singapore — 0.1% | Singapore — 0.1% | Singapore — 0.1% |
|  CapitaLand Investment Ltd. | 79111 | 168489 |
|  New Zealand — 0.1% | New Zealand — 0.1% | New Zealand — 0.1% |
|  Meridian Energy Ltd. | 45271 | 152014 |
|  Luxembourg — 0.1% | Luxembourg — 0.1% | Luxembourg — 0.1% |
|  InPost SA (a) | 7789 | 111867 |
|  Total Common Stocks<br>(Cost $123,090,131) |  | 162774657 |
|  SHORT-TERM INVESTMENTS — 0.4% | SHORT-TERM INVESTMENTS — 0.4% | SHORT-TERM INVESTMENTS — 0.4% |
|  UMB Money Market Fiduciary Account, 0.01% (d)<br>(Cost $616,291) |  | 616291 |
|  Total Short-term Investments<br>(Cost $616,291) |  | 616291 |
|  **TOTAL INVESTMENTS (e) — 99.0%** | **TOTAL INVESTMENTS (e) — 99.0%** |  |
| &nbsp;&nbsp;&nbsp;&nbsp; (Cost $123,706,422) |  | 163390948 |
|  Other Assets Less Liabilities — 1.0% | Other Assets Less Liabilities — 1.0% | 1578103 |
|  **NET ASSETS — 100.0%** |  | $164969051 |

---

PLC – Public Limited Company

REIT – Real Estate Investment Trusts

&nbsp;&nbsp;&nbsp;&nbsp;(a) Non-income producing security.

&nbsp;&nbsp;&nbsp;&nbsp;(b) Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional buyers. The total value of these securities is $1,736,109.

&nbsp;&nbsp;&nbsp;&nbsp;(c) Preference shares.

&nbsp;&nbsp;&nbsp;&nbsp;(d) The rate quoted is the annualized seven-day yield of the fund at the period end.

------

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND PORTFOLIO OF INVESTMENTS July 31, 2025 concluded

&nbsp;&nbsp;&nbsp;&nbsp;(e) The cost of investments for federal income tax purposes is $128,318,369 resulting in gross unrealized appreciation and depreciation of $43,205,541 and $8,132,962 respectively, or net unrealized appreciation of $35,072,579.

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| Purchase<br>Contracts | Counterparty | Currency<br>Exchange | Settlement<br>Date | Currency<br>Amount<br>Purchased | Value At<br>Settlement<br>Date | Value At<br>July 31, 2025 | Unrealized<br>Appreciation<br>(Depreciation) |
| Australian Dollar | Bank of Montreal | AUD per USD | 9/17/2025 | 230000 | $149144 | $147949 | $(1195) |
| British Pound | Bank of Montreal | GBP per USD | 9/17/2025 | 60000 | 81230 | 79278 | (1952) |
| Canadian Dollar | Bank of Montreal | CAD per USD | 9/17/2025 | 306467 | 225972 | 221708 | (4264) |
| Euro | JP Morgan | EUR per USD | 9/17/2025 | 290000 | 335971 | 332049 | (3922) |
| Japanese Yen | JP Morgan | JPY per USD | 9/17/2025 | 27510000 | 192547 | 183454 | (9093) |
| Japanese Yen | JP Morgan | JPY per USD | 9/17/2025 | 19700000 | 136901 | 131372 | (5529) |
| Swedish Krona | Citibank | SEK per USD | 9/17/2025 | 260000 | 27424 | 26646 | (778) |
|  |  |  |  |  | $1149189 | $1122456 | $(26733) |
| Sale<br>Contracts | Counterparty | Currency<br>Exchange | Settlement<br>Date | Currency<br>Amount<br>Sold | Value At<br>Settlement<br>Date | Value At<br>July 31, 2025 | Unrealized<br>Appreciation<br>(Depreciation) |
| Danish Krone | Goldman Sachs | DKK per USD | 9/17/2025 | (710000) | $(110299) | $(108970) | $1329 |
| Euro | Toronto Dominion | EUR per USD | 9/17/2025 | (90000) | (105876) | (103050) | 2826 |
| Hong Kong Dollar | Bank of Montreal | HKD per USD | 9/17/2025 | (340000) | (43637) | (43499) | 138 |
| Switzerland Franc | Bank of Montreal | CHF per USD | 9/17/2025 | (133208) | (165792) | (165018) | 774 |
| Switzerland Franc | Morgan Stanley | CHF per USD | 9/17/2025 | (80000) | (100989) | (99103) | 1886 |
|  |  |  |  |  | $(526593) | $(519640) | $6953 |
| TOTAL FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS | TOTAL FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS | TOTAL FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS | TOTAL FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS | TOTAL FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS | $622596 | $602816 | $(19780) |

---

AUD – Australian Dollar

CAD – Canadian Dollar

CHF – Switzerland Franc

DKK – Danish Krone

---

| | |
|:---|:---|
| EUR | – Euro  |

---

GBP – British Pound

HKD – Hong Kong Dollar

JPY – Japanese Yen

SEK – Swedish Krona

See Notes to Financial Statements

------

GREEN CENTURY FUNDS STATEMENTS OF ASSETS AND LIABILITIES

July 31, 2025

---

| | | | |
|:---|:---|:---|:---|
|  | BALANCED FUND | EQUITY FUND | MSCI INTERNATIONAL<br>INDEX FUND |
|  ASSETS: |  |  |  |
|  Investments, at value (cost $260,477,449, $247,804,191 and $123,706,422, respectively) | $378092990 | $715644795 | $163390948 |
|  Foreign cash, at value (cost $0, $0 and $738,883, respectively) |  |  | 730166 |
| Receivables for: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Capital stock sold | 1232 | 159506 | 5070 |
| &nbsp;&nbsp;&nbsp;&nbsp; Interest | 1111237 | 5 | 3 |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividends | 125081 | 526426 | 1064677 |
| &nbsp;&nbsp;&nbsp;&nbsp; Unrealized appreciation on forward foreign currency exchange contracts |  |  | 6953 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total assets | 379330540 | 716330732 | 165197817 |
|  LIABILITIES: |  |  |  |
|  Payable for capital stock repurchased | 3868 | 368639 | 44434 |
|  Accrued expenses | 442898 | 639861 | 157599 |
|  Unrealized depreciation on forward foreign currency exchange contracts |  |  | 26733 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total liabilities | 446766 | 1008500 | 228766 |
|  NET ASSETS | $378883774 | $715322232 | $164969051 |
|  NET ASSETS CONSIST OF: |  |  |  |
|  Paid-in capital (par value of $0.01 per share with unlimited number of shares authorized) | $245835138 | $227403768 | $126775141 |
|  Net distributable earnings | 133048636 | 487918464 | 38193910 |
|  NET ASSETS | $378883774 | $715322232 | $164969051 |
|  NET ASSET VALUE PER SHARE PER CLASS: |  |  |  |
| Individual Investor Class Shares: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets applicable to shares outstanding | $264050400 | $387982385 | $47505597 |
| &nbsp;&nbsp;&nbsp;&nbsp; Shares of beneficial interest issued and outstanding | 7436173 | 3958809 | 3188567 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net asset value per share | $35.51 | $98.00 | $14.90 |
| Institutional Class Shares: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets applicable to shares outstanding | $114833374 | $327339847 | $117463454 |
| &nbsp;&nbsp;&nbsp;&nbsp; Shares of beneficial interest issued and outstanding | 3221911 | 3359257 | 7919626 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net asset value per share | $35.64 | $97.44 | $14.83 |

---

See Notes to Financial Statements

------

GREEN CENTURY FUNDS STATEMENTS OF OPERATIONS

For the year ended July 31, 2025

---

| | | | |
|:---|:---|:---|:---|
|  | BALANCED FUND | EQUITY FUND | MSCI INTERNATIONAL<br>INDEX FUND |
|  INVESTMENT INCOME: |  |  |  |
|  Interest income | $4996291 | $75 | $32 |
|  Dividend and other income (net of $13,253, $4,419 and $465,796 foreign withholding taxes, respectively) | 2696070 | 8723280 | 4014197 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total investment income | 7692361 | 8723355 | 4014229 |
|  EXPENSES: |  |  |  |
|  Administrative services fee | 2885814 | 5772663 | 1397673 |
|  Investment advisory fee | 2474208 | 1427805 | 496154 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Total expenses | 5360022 | 7200468 | 1893827 |
|  NET INVESTMENT INCOME | 2332339 | 1522887 | 2120402 |
|  NET REALIZED AND UNREALIZED GAIN (LOSS): |  |  |  |
| Net realized gain (loss) on: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Investments | 21676166 | 32719726 | 3254356 |
| &nbsp;&nbsp;&nbsp;&nbsp; Foreign currency transactions |  |  | (4519) |
| &nbsp;&nbsp;&nbsp;&nbsp; Forward foreign currency exchange contracts |  |  | 53901 |
| Change in net unrealized appreciation (depreciation) on: |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Investments | (6820598) | 57207168 | 2577856 |
| &nbsp;&nbsp;&nbsp;&nbsp; Foreign currency translations |  |  | 38687 |
| &nbsp;&nbsp;&nbsp;&nbsp; Forward foreign currency exchange contracts |  |  | (32032) |
|  NET REALIZED AND UNREALIZED GAIN ON INVESTMENTS | 14855568 | 89926894 | 5888249 |
|  NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS | $17187907 | $91449781 | $8008651 |

---

See Notes to Financial Statements

------

GREEN CENTURY FUNDS STATEMENTS OF CHANGES IN NET ASSETS

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | BALANCED FUND | BALANCED FUND | EQUITY FUND | EQUITY FUND | MSCI INTERNATIONAL<br>INDEX FUND | MSCI INTERNATIONAL<br>INDEX FUND |
|  | FOR THE<br>YEAR<br>ENDED<br>JULY 31,<br>2025 | FOR THE<br>YEAR<br>ENDED<br>JULY 31,<br>2024 | FOR THE<br>YEAR<br>ENDED<br>JULY 31,<br>2025 | FOR THE<br>YEAR<br>ENDED<br>JULY 31,<br>2024 | FOR THE<br>YEAR<br>ENDED<br>JULY 31,<br>2025 | FOR THE<br>YEAR<br>ENDED<br>JULY 31,<br>2024 |
|  INCREASE (DECREASE) IN NET ASSETS: | INCREASE (DECREASE) IN NET ASSETS: |  |  |  |  |  |
| From operations: |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net investment income | $2332339 | $2319344 | $1522887 | $1771017 | $2120402 | $2632753 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net realized gain on investments, foreign currency transactions, and forward foreign currency exchange contracts | 21676166 | 18057161 | 32719726 | 1791902 | 3303738 | 4361978 |
| &nbsp;&nbsp;&nbsp;&nbsp; Change in net unrealized appreciation (depreciation) on investments, foreign currency translations, and forward foreign currency exchange contracts | (6820598) | 23038445 | 57207168 | 109762461 | 2584511 | 14915925 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net increase in net assets resulting from operations | 17187907 | 43414950 | 91449781 | 113325380 | 8008651 | 21910656 |
|  Dividends and distributions to shareholders: |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Distributions |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Investor Class | (17971643) | (8227012) | (3939790) | (549959) | (581251) | (639922) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Institutional Class | (8676052) | (3609310) | (4073410) | (1138050) | (1802882) | (2048738) |
|  Total dividends and distributions | (26647695) | (11836322) | (8013200) | (1688009) | (2384133) | (2688660) |
| Capital share transactions: |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Proceeds from sales of shares |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Investor Class | 15485499 | 17299282 | 24845947 | 34307961 | 7370303 | 8440202 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Institutional Class | 14275777 | 22294622 | 40006381 | 41817824 | 15568507 | 20418761 |
| &nbsp;&nbsp;&nbsp;&nbsp; Reinvestment of dividends and distributions |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Investor Class | 17399676 | 7973126 | 3832674 | 534875 | 573407 | 632980 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Institutional Class | 8533611 | 3548005 | 3623012 | 1013383 | 1798549 | 2046659 |
| &nbsp;&nbsp;&nbsp;&nbsp; Payments for shares redeemed |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Individual Investor Class<sup>1</sup> | (43476004) | (46487264) | (58327551) | (40518479) | (20952274) | (7807554) |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Institutional Class<sup>2</sup> | (28848986) | (25821729) | (46889214) | (41886673) | (36658848) | (39097119) |
| &nbsp;&nbsp;&nbsp;&nbsp; Net decrease in net assets resulting from capital share transactions | (16630427) | (21193958) | (32908751) | (4731109) | (32300356) | (15366071) |
|  Total increase (decrease) in net assets | (26090215) | 10384670 | 50527830 | 106906262 | (26675838) | 3855925 |
|  NET ASSETS: |  |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Beginning of period | 404973989 | 394589319 | 664794402 | 557888140 | 191644889 | 187788964 |
| &nbsp;&nbsp;&nbsp;&nbsp; End of period | $378883774 | $404973989 | $715322232 | $664794402 | $164969051 | $191644889 |

---

---

| | |
|:---|:---|
| 1 | Net of redemption fee received of $4,795, $3,419, $6,084, $13,514, $6,820 and $3,388, respectively.  |

---

---

| | |
|:---|:---|
| 2 | Net of redemption fee received of $3,165, $843, $15,812, $562, $11,091 and $26,591, respectively.  |

---

See Notes to Financial Statements

------

GREEN CENTURY BALANCED FUND INDIVIDUAL INVESTOR CLASS FINANCIAL HIGHLIGHTS

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, |
|  | 2025 | 2024 | 2023 | 2022 | 2021 |
|  Net Asset Value, beginning of year | $36.32 | $33.46 | $32.93 | $37.21 | $30.83 |
| Income (loss) from investment operations: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net investment income (loss) | 0.18 | 0.17 | 0.11 | (0.01) | 0.02 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss) on investments | 1.41 | 3.72 | 1.05 | (2.78) | 7.51 |
|  Total increase (decrease) from investment operations | 1.59 | 3.89 | 1.16 | (2.79) | 7.53 |
| Less dividends: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividends from net investment income | (0.18) | (0.18) | (0.09) |  | (0.02) |
| &nbsp;&nbsp;&nbsp;&nbsp; Distributions from net realized gains | (2.22) | (0.85) | (0.54) | (1.49) | (1.13) |
|  Total decrease from dividends | (2.40) | (1.03) | (0.63) | (1.49) | (1.15) |
|  Net Asset Value, end of year | $35.51 | $36.32 | $33.46 | $32.93 | $37.21 |
|  Total return | 4.64% | 11.89% | 3.67% | (7.97)% | 24.86% |
| Ratios/Supplemental data: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets, end of year (in 000's) | $264050 | $280643 | $279640 | $296605 | $323991 |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of expenses to average net assets | 1.46% | 1.46% | 1.46% | 1.46% | 1.46% |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of net investment income to average net assets | 0.50% | 0.52% | 0.35% | (0.03)% | 0.07% |
| &nbsp;&nbsp;&nbsp;&nbsp; Portfolio turnover(a) | 23% | 13% | 21% | 9% | 17% |

---

(a) Calculated at Fund level.

GREEN CENTURY BALANCED FUND INSTITUTIONAL CLASS FINANCIAL HIGHLIGHTS

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE PERIOD<br>NOVEMBER 30, 2020<br>(COMMENCEMENT<br>OF OPERATIONS) TO<br>JULY 31, |
|  | 2025 | 2024 | 2023 | 2022 | 2021 |
|  Net Asset Value, beginning of period | $36.44 | $33.56 | $33.06 | $37.27 | $33.58 |
| Income (loss) from investment operations: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net investment income | 0.29 | 0.29 | 0.20 | 0.08 | 0.08 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss) on investments | 1.41 | 3.72 | 1.07 | (2.78) | 4.78 |
|  Total increase (decrease) from investment operations | 1.70 | 4.01 | 1.27 | (2.70) | 4.86 |
| Less dividends: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividends from net investment income | (0.28) | (0.28) | (0.23) | (0.02) | (0.04) |
| &nbsp;&nbsp;&nbsp;&nbsp; Distributions from net realized gains | (2.22) | (0.85) | (0.54) | (1.49) | (1.13) |
|  Total decrease from dividends | (2.50) | (1.13) | (0.77) | (1.51) | (1.17) |
|  Net Asset Value, end of period | $35.64 | $36.44 | $33.56 | $33.06 | $37.27 |
|  Total return | 4.94% | 12.21% | 4.01% | (7.72)% | 14.89 %(a) |
| Ratios/Supplemental data: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets, end of period (in 000's) | $114833 | $124331 | $114950 | $101317 | $86347 |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of expenses to average net assets | 1.16% | 1.16% | 1.16% | 1.16% | 1.16 %(b) |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of net investment income to average net assets | 0.80% | 0.82% | 0.65% | 0.27% | 0.33 %(b) |
| &nbsp;&nbsp;&nbsp;&nbsp; Portfolio turnover(c) | 23% | 13% | 21% | 9% | 17 %(a) |

---

(a) Not annualized.

(b) Annualized.

(c) Calculated at Fund level.

See Notes to Financial Statements

------

GREEN CENTURY EQUITY FUND INDIVIDUAL INVESTOR CLASS FINANCIAL HIGHLIGHTS

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, |
|  | 2025 | 2024 | 2023 | 2022 | 2021 |
|  Net Asset Value, beginning of year | $86.57 | $72.03 | $64.46 | $71.35 | $52.23 |
| Income from investment operations: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net investment income | 0.10 | 0.14 | 0.23 | 0.09 | 0.09 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss) on investments | 12.26 | 14.53 | 7.68 | (6.11) | 19.60 |
|  Total increase (decrease) from investment operations | 12.36 | 14.67 | 7.91 | (6.02) | 19.69 |
| Less dividends: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividends from net investment income | (0.07) | (0.13) | (0.18) | (0.02) | (0.06) |
| &nbsp;&nbsp;&nbsp;&nbsp; Distributions from net realized gains | (0.86) |  | (0.16) | (0.85) | (0.51) |
|  Total decrease from dividends | (0.93) | (0.13) | (0.34) | (0.87) | (0.57) |
|  Net Asset Value, end of year | $98.00 | $86.57 | $72.03 | $64.46 | $71.35 |
|  Total return | 14.36% | 20.37% | 12.37% | (8.64)% | 37.90% |
| Ratios/Supplemental data: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets, end of year (in 000's) | $387982 | $371751 | $314349 | $301668 | $338094 |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of expenses to average net assets | 1.20% | 1.23 %(a) | 1.25% | 1.25% | 1.25% |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of net investment income to average net assets | 0.09% | 0.17% | 0.35% | 0.11% | 0.14% |
| &nbsp;&nbsp;&nbsp;&nbsp; Portfolio turnover(b) | 8% | 5% | 4% | 5% | 9% |

---

(a) Effective March 1, 2024, the Adviser has contractually agreed to lower the total annual operating expenses to 1.20%. Prior to March 1, 2024, the Adviser had contractually agreed to annual operating expenses of 1.25%.

(b) Calculated at Fund level.

GREEN CENTURY EQUITY FUND INSTITUTIONAL CLASS FINANCIAL HIGHLIGHTS

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, |
|  | 2025 | 2024 | 2023 | 2022 | 2021 |
|  Net Asset Value, beginning of period | $86.07 | $71.59 | $64.13 | $71.12 | $52.10 |
| Income from investment operations: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net investment income | 0.35 | 0.36 | 0.42 | 0.31 | 0.30 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss) on investments | 12.23 | 14.46 | 7.65 | (6.13) | 19.54 |
|  Total increase (decrease) from investment operations | 12.58 | 14.82 | 8.07 | (5.82) | 19.84 |
| Less dividends: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividends from net investment income | (0.35) | (0.34) | (0.45) | (0.32) | (0.31) |
| &nbsp;&nbsp;&nbsp;&nbsp; Distributions from net realized gains | (0.86) |  | (0.16) | (0.85) | (0.51) |
|  Total decrease from dividends | (1.21) | (0.34) | (0.61) | (1.17) | (0.82) |
|  Net Asset Value, end of period | $97.44 | $86.07 | $71.59 | $64.13 | $71.12 |
|  Total return | 14.71% | 20.72% | 12.72% | (8.38)% | 38.33% |
| Ratios/Supplemental data: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets, end of period (in 000's) | $327340 | $293044 | $243539 | $213705 | $178038 |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of expenses to average net assets | 0.90% | 0.93 %(a) | 0.95% | 0.95% | 0.95% |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of net investment income to average net assets | 0.39% | 0.47% | 0.65% | 0.41% | 0.44% |
| &nbsp;&nbsp;&nbsp;&nbsp; Portfolio turnover(b) | 8% | 5% | 4% | 5% | 9% |

---

(a) Effective March 1, 2024, the Adviser has contractually agreed to lower the total annual operating expenses to 0.90%. Prior to March 1, 2024, the Adviser had contractually agreed to annual operating expenses of 0.95%.

(b) Calculated at Fund level.

See Notes to Financial Statements

------

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND INDIVIDUAL INVESTOR CLASS FINANCIAL HIGHLIGHTS

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, |
|  | 2025 | 2024 | 2023 | 2022 | 2021 |
|  Net Asset Value, beginning of period | $14.36 | $13.07 | $11.82 | $14.94 | $11.68 |
| Income (loss) from investment operations: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net investment income | 0.16 | 0.15 | 0.16 | 0.19 | 0.09 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss) on investments | 0.55 | 1.30 | 1.23 | (2.87) | 3.27 |
|  Total increase (decrease) from investment operations | 0.71 | 1.45 | 1.39 | (2.68) | 3.36 |
| Less dividends: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividends from net investment income | (0.17) | (0.16) | (0.14) | (0.18) | (0.10) |
| &nbsp;&nbsp;&nbsp;&nbsp; Distributions from net realized gains |  |  |  | (0.26) |  |
|  Total decrease from dividends | (0.17) | (0.16) | (0.14) | (0.44) | (0.10) |
|  Net Asset Value, end of period | $14.90 | $14.36 | $13.07 | $11.82 | $14.94 |
|  Total return | 4.96% | 11.11% | 11.83% | (18.36)% | 28.76% |
| Ratios/Supplemental data: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets, end of period (in 000's) | $47506 | $58855 | $52275 | $47435 | $46508 |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of expenses to average net assets | 1.28% | 1.28% | 1.28% | 1.28% | 1.28% |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of net investment income to average net assets | 0.99% | 1.15% | 1.34% | 1.55% | 0.77% |
| &nbsp;&nbsp;&nbsp;&nbsp; Portfolio turnover(a) | 20% | 29% | 42% | 29% | 31% |

---

(a) Calculated at Fund level.

GREEN CENTURY MSCI INTERNATIONAL INDEX FUND INSTITUTIONAL CLASS FINANCIAL HIGHLIGHTS

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, | FOR THE YEARS ENDED JULY 31, |
|  | 2025 | 2024 | 2023 | 2022 | 2021 |
|  Net Asset Value, beginning of period | $14.30 | $13.01 | $11.78 | $14.90 | $11.66 |
| Income (loss) from investment operations: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net investment income | 0.19 | 0.18 | 0.19 | 0.24 | 0.13 |
| &nbsp;&nbsp;&nbsp;&nbsp; Net realized and unrealized gain (loss) on investments | 0.56 | 1.30 | 1.23 | (2.86) | 3.26 |
|  Total increase (decrease) from investment operations | 0.75 | 1.48 | 1.42 | (2.62) | 3.39 |
| Less dividends: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Dividends from net investment income | (0.22) | (0.19) | (0.19) | (0.24) | (0.15) |
| &nbsp;&nbsp;&nbsp;&nbsp; Distributions from net realized gains |  |  |  | (0.26) |  |
|  Total decrease from dividends | (0.22) | (0.19) | (0.19) | (0.50) | (0.15) |
|  Net Asset Value, end of period | $14.83 | $14.30 | $13.01 | $11.78 | $14.90 |
|  Total return | 5.24% | 11.46% | 12.15% | (18.05)% | 29.09% |
| Ratios/Supplemental data: |  |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; Net assets, end of period (in 000's) | $117463 | $132790 | $135514 | $115620 | $112002 |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of expenses to average net assets | 0.98% | 0.98% | 0.98% | 0.98% | 0.98% |
| &nbsp;&nbsp;&nbsp;&nbsp; Ratio of net investment income to average net assets | 1.29% | 1.45% | 1.64% | 1.85% | 1.07% |
| &nbsp;&nbsp;&nbsp;&nbsp; Portfolio turnover(a) | 20% | 29% | 42% | 29% | 31% |

---

(a) Calculated at Fund level.

See Notes to Financial Statements

------

GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS

NOTE 1 — Organization and Significant Accounting Policies

Green Century Funds (the "Trust") is a Massachusetts business trust which offers three separate series, the Green Century Balanced Fund (the "Balanced Fund"), the Green Century Equity Fund (the "Equity Fund") and the Green Century MSCI International Index Fund (the "MSCI International Index Fund"), each a "Fund" and collectively, the "Funds". The Trust is registered under the Investment Company Act of 1940, as amended (the "Act"), as an open-end, diversified management investment company. The Trust accounts separately for the assets, liabilities and operations of each series. The Balanced Fund Investor Share Class commenced operations on March 18, 1992, the Balanced Fund Institutional Share Class commenced operations on November 30, 2020, the Equity Fund Individual Investor Share Class commenced operations on September 13, 1995, the Equity Fund Institutional Share Class commenced operations on April 30, 2018, and the Individual Investor Share Class and Institutional Share Class of the MSCI International Index Fund commenced operations on September 30, 2016.

The preparation of financial statements in conformity with U.S. generally accepted accounting principles ("U.S. GAAP") requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Each Fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (the "FASB") Accounting Standard Codification Topic 946 "Financial Services — Investment Companies".

The following is a summary of the Funds' significant accounting policies:

(A) Investment Valuation: Equity securities listed on U.S. national securities exchanges other than NASDAQ are valued at last sale price. If a last sale price is not available, securities listed on U.S. national exchanges other than NASDAQ are valued at the mean between the closing bid and closing ask prices. NASDAQ National Market<sup>®</sup> and SmallCapSM securities are valued at the NASDAQ Official Closing Price ("NOCP"). The NOCP is based on the last traded price if it falls within the concurrent best bid and ask prices and is normalized pursuant to NASDAQ's published procedures if it falls outside this range. If a NOCP is not available for any such security, the security is valued at the last sale price, or, if there have been no sales that day, at the mean between the closing bid and closing ask prices. Unlisted U.S. equity securities are valued at last sale price, or when last sale prices are not available, at the last quoted bid price. Debt securities (other than certificates of deposit and short-term obligations maturing in sixty days or less) are valued on the basis of valuations furnished by an independent pricing service which takes into account appropriate factors such as institution-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, and other market data, without exclusive reliance on quoted prices, exchange or over-the-counter prices. Certificates of deposit are valued at cost plus accrued interest, and short-term obligations maturing in sixty days or less are valued at amortized cost, both of which approximate fair value. Securities, if any, for which there are no such valuations or quotations available, or for which the market quotation or valuation provided by a pricing service is deemed not reliable, are valued at fair value by management as determined in good faith under guidelines established by the Trustees. Effective September 8, 2022, pursuant to Rule 2a-5 under the 1940

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GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

Act, the Board of Trustees has designated Green Century Capital Management, Inc. ("GCCM") as a valuation designee (the "Valuation Designee") to determine the fair value, in good faith, of securities and other instruments for which no readily available market quotation exists. As Valuation Designee, GCCM is responsible for the supervision and implementation of the valuation process with respect to the Funds, subject to the Board's oversight. GCCM will, among other things, (1) assess and manage material risks associated with fair value determinations; (2) select, apply and test fair value methodologies; and (3) oversee and evaluate pricing services used.

For non-U.S. securities traded in foreign markets, the MSCI International Index Fund uses a fair value model developed by an independent pricing service to assist in valuing those securities. If an event occurs after the time at which the market for foreign securities held by the Fund closes but before the time that the Fund's next NAV is calculated, such event may cause the closing price on the foreign exchange to not represent the readily available reliable market value quotation for such securities at the time the Fund determines its NAV. In such a case, the Fund will use the fair value of such securities as determined under the Fund's valuation procedures. Events after the close of trading on a foreign market that could require a Fund to fair value some or all of its foreign securities include, among others, securities trading in the U.S. and other markets, corporate announcements, natural and other disasters, and political and other events. Among other elements of analysis in the determination of a security's fair value, the Board has authorized the use of one or more independent research services to assist with such determinations. An independent research service may use statistical analyses and quantitative models to help determine fair value as of the time the Fund calculates its NAV. There can be no assurance that such models accurately reflect the behavior of the applicable markets or the effect of the behavior of such markets on the fair value of securities, or that such markets will continue to behave in a fashion that is consistent with such models. Unlike the closing price of a security on an exchange, fair value determinations employ elements of judgment. Consequently, the fair value assigned to a security may not represent the actual value that the Fund could obtain if it were to sell the security at the time of the close of the NYSE. Pursuant to procedures adopted by the Board, the Fund is not obligated to use the fair valuations suggested by any research service, and valuation recommendations provided by such research services may be overridden if other events have occurred or if other fair valuations are determined in good faith to be more accurate. Unless an event is such that it causes the Fund to determine that the closing prices for one or more securities do not represent readily available reliable market value quotations at the time the Fund determines its NAV, events that occur between the time of the close of the foreign market on which they are traded and the close of regular trading on the NYSE will not be reflected in the Fund's NAV.

In accordance with U.S. GAAP, fair value is defined as the price that each Fund would receive to sell an investment or pay to transfer a liability in an orderly transaction with an independent buyer in the principal market, or in the absence of a principal market the most advantageous market for the investment or liability. Various inputs are used in determining the value of the Fund's investments. These inputs are summarized in the three broad levels listed below:

Level 1 — quoted prices for active markets for identical securities. An active market for the security is a market in which transactions occur with sufficient frequency and volume to provide pricing information on an ongoing basis. A quoted price in an active market provides the most reliable evidence of fair value.

Level 2 — other significant observable inputs (including quoted prices for similar securities, interest rates, prepayment speeds, credit risk, etc.). Examples of level 2 inputs include 1) quoted prices for identical or similar assets in markets that are not active 2) investments valued at amortized cost and 3) investments valued with inputs that are derived principally from or corroborated by observable market data. An adjustment to any observable input that is significant to the fair value may render the measurement a Level 3 measurement.

Level 3 — significant unobservable inputs, including the Funds' own assumptions in determining the fair value of investments.

------

GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

In some cases, the inputs used to measure the fair value of an asset or a liability might be categorized within different levels of the fair value hierarchy. In those cases, the fair value measurement is categorized in its entirety in the same level of the fair value hierarchy as the lowest level input that is significant to the entire measurement. The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities.

The following is a summary of the inputs used to value the Balanced Fund's net assets as of July 31, 2025:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | LEVEL 1 | LEVEL 2 | LEVEL 3 | TOTAL |
|  COMMON STOCKS | $236215705 | $— | $— | $236215705 |
|  BONDS & NOTES |  | 139246345 |  | 139246345 |
|  SHORT-TERM OBLIGATIONS | 2630940 |  |  | 2630940 |
|  TOTAL | $238846645 | $139246345 | $— | $378092990 |

---

The following is a summary of the inputs used to value the Equity Fund's net assets as of July 31, 2025:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | LEVEL 1 | LEVEL 2 | LEVEL 3 | TOTAL |
|  COMMON STOCKS | $714328943 | $— | $— | $714328943 |
|  SHORT-TERM OBLIGATIONS | 1315852 |  |  | 1315852 |
|  TOTAL | $715644795 | $— | $— | $715644795 |

---

------

GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

The following is a summary of the inputs used to value the MSCI International Index Fund's net assets as of July 31, 2025:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | LEVEL 1 | LEVEL 2 | LEVEL 3 | TOTAL |
| COMMON STOCK |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; JAPAN | $— | $37555878 | $— | $37555878 |
| &nbsp;&nbsp;&nbsp;&nbsp; CANADA | 19206015 |  |  | 19206015 |
| &nbsp;&nbsp;&nbsp;&nbsp; UNITED KINGDOM |  | 17368520 |  | 17368520 |
| &nbsp;&nbsp;&nbsp;&nbsp; SWITZERLAND |  | 16829048 |  | 16829048 |
| &nbsp;&nbsp;&nbsp;&nbsp; FRANCE |  | 14870874 |  | 14870874 |
| &nbsp;&nbsp;&nbsp;&nbsp; NETHERLANDS |  | 13451153 |  | 13451153 |
| &nbsp;&nbsp;&nbsp;&nbsp; AUSTRALIA |  | 9591057 |  | 9591057 |
| &nbsp;&nbsp;&nbsp;&nbsp; DENMARK |  | 9042271 |  | 9042271 |
| &nbsp;&nbsp;&nbsp;&nbsp; GERMANY |  | 5339292 |  | 5339292 |
| &nbsp;&nbsp;&nbsp;&nbsp; SWEDEN |  | 3793885 |  | 3793885 |
| &nbsp;&nbsp;&nbsp;&nbsp; HONG KONG |  | 3595104 |  | 3595104 |
| &nbsp;&nbsp;&nbsp;&nbsp; ITALY |  | 2679766 |  | 2679766 |
| &nbsp;&nbsp;&nbsp;&nbsp; FINLAND |  | 2525145 |  | 2525145 |
| &nbsp;&nbsp;&nbsp;&nbsp; SPAIN |  | 2269337 |  | 2269337 |
| &nbsp;&nbsp;&nbsp;&nbsp; NORWAY |  | 1820462 |  | 1820462 |
| &nbsp;&nbsp;&nbsp;&nbsp; BELGIUM |  | 1162475 |  | 1162475 |
| &nbsp;&nbsp;&nbsp;&nbsp; IRELAND |  | 1038612 |  | 1038612 |
| &nbsp;&nbsp;&nbsp;&nbsp; JERSEY |  | 203393 |  | 203393 |
| &nbsp;&nbsp;&nbsp;&nbsp; SINGAPORE |  | 168489 |  | 168489 |
| &nbsp;&nbsp;&nbsp;&nbsp; NEW ZEALAND | 152014 |  |  | 152014 |
| &nbsp;&nbsp;&nbsp;&nbsp; LUXEMBOURG |  | 111867 |  | 111867 |
|  TOTAL COMMON STOCK | 19358029 | 143416628 |  | 162774657 |
|  SHORT-TERM INVESTMENTS | 616291 |  |  | 616291 |
|  TOTAL | $19974320 | $143416628 | $— | $163390948 |
|  OTHER FINANCIAL INSTRUMENTS\* |  |  |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp; FORWARD CONTRACTS | $— | $(19780) | $— | $(19780) |
|  TOTAL OTHER FINANCIAL INSTRUMENTS | $— | $(19780) | $— | $(19780) |

---

\* Other financial instruments are derivative instruments such as forward contracts. Forward contracts are valued at the unrealized appreciation (depreciation) on the instrument.

There were no transfers into or out of Level 3 during the reporting period.

(B) Securities Transactions and Investment Income: Securities transactions are recorded on a trade date basis. Realized gains and losses from securities transactions are determined using the identified cost basis. Interest income, including amortization of premiums and accretion of discounts on bonds, is recognized on the accrual basis and dividend income is recorded on ex-dividend date. Income, expenses and realized and unrealized gains and losses on investments are allocated to each class of shares in proportion to their relative shares outstanding.

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GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

(C) Currency Translations and Contracts: Securities and other assets and liabilities denominated in foreign currencies are translated into U.S. dollar amounts on the date of valuation. Purchases and sales of securities, and income and expense items denominated in foreign currencies, are translated into U.S. dollar amounts on the respective dates of such transactions. Occasionally, events impact the availability or reliability of foreign exchange rates used to convert the U.S. dollar equivalent value. If such an event occurs, the foreign exchange rate will be valued at fair value using procedures established and approved by the Board of Trustees. The Funds do not separately report the effect of fluctuations in foreign exchange rates from changes in market prices on securities held. Such fluctuations are included with the net realized and unrealized gain or loss from investments. Realized foreign exchange gains or losses arise from sales of foreign currencies, currency gains or losses realized between the trade and settlement dates on securities transactions, and the difference between the recorded amounts of dividends, interest, and foreign withholding taxes and the U.S. dollar equivalent of the amounts actually received or paid. Net unrealized foreign exchange gains and losses arise from changes in fair value of assets and liabilities other than investments in securities held at the end of the reporting period, resulting from changes in exchange rates. When a Fund purchases or sells foreign securities, it enters into foreign exchange contracts to minimize foreign exchange risk from the trade date to the settlement date of the transactions. A foreign exchange contract is an agreement between two parties to exchange different currencies at an agreed-upon exchange rate on a specified date. The MSCI International Index Fund held open foreign currency spot contracts outstanding as of July 31, 2025 that are not considered investments. The MSCI International Index Fund held forward foreign currency exchange contracts ("Forward Contracts") as of July 31, 2025 displayed in the Portfolio of Investments.

Cash, including cash denominated in foreign currencies, represents cash on hand held at major financial institutions and is subject to credit risk to the extent the balance exceeds applicable Federal Deposit Insurance Corporation (FDIC) or Securities Investor Protection Corporation (SIPC) limitations.

(D) Distributions: Distributions to shareholders are recorded on the ex-dividend date. The Funds declare and pay dividends of net investment income, if any, semi-annually and distribute net realized capital gains, if any, annually. The amount and character of income and net realized gains to be distributed are determined in accordance with Federal income tax rules and regulations, which may differ from U.S. GAAP. To the extent that these differences are attributable to permanent book and tax accounting differences, the components of net assets have been adjusted.

(E) Federal Taxes: Each series of the Trust is treated as a separate entity for Federal income tax purposes. Each Fund's policy is to comply with the provisions of the Internal Revenue Code applicable to regulated investment companies ("RICs"). Accordingly, no provisions for Federal income or excise tax are necessary.

U.S. GAAP requires that all entities, including pass-through entities such as the Funds, establish a minimum threshold for financial statement recognition of the benefit of positions taken in filing tax returns (including whether an entity is taxable in a particular jurisdiction). The Funds recognize tax benefits only if it is more likely than not that a tax position (including the Funds' assertion that their income is exempt from tax) will be sustained upon examination. The Funds had no material uncertain tax positions and have not recorded a liability for unrecognized tax benefits as of July 31, 2025. Also, the Funds had recognized no interest and penalties related to uncertain tax benefits through July 31, 2025. At July 31, 2025, the tax years 2022 through 2025 remain open to examination by the Internal Revenue Service.

(F) Redemption Fee: A 2.00% redemption fee is retained by the Funds to offset the effect of transaction costs and other expenses associated with short-term investing. The fee is imposed on redemptions or exchanges of shares held 60 days or less from their purchase date. For the year ended July 31, 2025, the Balanced Fund, Equity Fund and MSCI International Index Fund received $7,960, $21,896, and $17,911 respectively, in redemption fees. Redemption fees are recorded as an adjustment to paid-in capital.

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GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

(G) Indemnification: The Funds' organizational documents provide that trustees and officers are indemnified against certain liabilities arising out of the performance of their duties to the Funds. In the normal course of business, the Funds may also enter into contracts that provide general indemnifications. The Funds' maximum exposure under these arrangements is unknown as this would be dependent on future claims that may be made against the Funds. The risk of material loss from such claims is considered remote. As of July 31, 2025, no liability has been accrued.

(H) Offsetting of Assets and Liabilities: As of July 31, 2025, there are no master netting arrangements related to the Funds. The Funds' Statements of Assets and Liabilities present derivative instruments on a gross basis, if applicable. As of July 31, 2025, no derivative instruments with master netting arrangements were held by the Funds.

NOTE 2 — Transactions With Affiliates

(A) Investment Adviser: GCCM is the adviser ("the Adviser") for the Funds. Green Century is owned by Paradigm Partners. Green Century oversees the portfolio management of the Funds on a day-to-day basis. Green Century's investment advisory fee paid by the Balanced Fund shall be equal on an annual basis to 0.65% of the average daily net assets of the Fund up to $250 million and 0.60% of the value of the average daily net assets of the Fund in excess of $250 million, accrued daily and paid monthly. The Equity Fund pays Green Century a fee, accrued daily and paid monthly, at an annual rate of 0.25% of the Equity Fund's average daily net assets up to but not including $100 million, 0.22% of average daily net assets including $100 million up to but not including $500 million, 0.17% of average daily net assets including $500 million up to but not including $1 billion and 0.12% of average daily net assets equal to or in excess of $1 billion. The MSCI International Index Fund pays Green Century a fee, accrued daily and paid monthly, at an annual rate of 0.28% of the MSCI International Index Fund's average daily net assets.

(B) Subadvisers: Trillium Asset Management, LLC ("Trillium") is the subadviser for the Balanced Fund. Trillium's investment subadvisory fee with respect to the Fund shall be equal on an annual basis to 0.40% of the value of the average daily net assets of the Fund up to $30 million, 0.35% of the value of the average daily net assets of the Fund in excess of $30 million up to $250 million, and 0.30% of the value of the average daily net assets of the Fund in excess of $250 million. For the year ended July 31, 2025, Green Century accrued fees of $1,314,591 to Trillium. Northern Trust Investments, Inc. ("Northern Trust") is the subadviser for the Equity Fund and MSCI International Index Fund. For the Equity Fund, Northern Trust is paid a fee by the Adviser based on Northern Trust's fee schedule of the greater of $75,000 or 0.10% of the value of the average daily net assets of the Fund up to but not including $50 million, 0.05% of the average daily net assets of the Fund from and including $50 million up to but not including $100 million and 0.03% of the average daily net assets of the Fund equal to or in excess of $100 million for its services. For the MSCI International Index Fund, Northern Trust is paid a fee by the Adviser based on Northern Trust's fee schedule of the greater of $100,000 or 0.17% of the value of the average daily net assets of the Fund up to but not including $50 million, 0.12% of the average daily net assets of the Fund from and including $50 million up to but not including $100 million and 0.08% of the average daily net assets of the Fund equal to or in excess of $100 million for its services. For the year ended July 31, 2025, Green Century accrued fees of $247,549 and $206,753 to Northern Trust for the Equity Fund and the MSCI International Index Fund, respectively.

(C) Administrator: Green Century is the administrator ("the Administrator") of the Green Century Funds. Pursuant to the Administrative Services Agreement, Green Century pays all the expenses of each Fund other than the investment advisory fees; interest; taxes; brokerage costs and other capital expenses; expenses of non-interested trustees (including counsel fees) and any extraordinary expenses. The Balanced Fund pays

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GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

Green Century a fee at a rate such that immediately following any payment to the Administrator, the total operating expenses of the Fund, on an annual basis, do not exceed 1.48% of the Fund's Individual Investor Class average daily net assets up to and including $250 million and 1.43% of the Fund's Individual Investor Class average daily net assets in excess of $250 million, and 1.18% of the Fund's Institutional Class average daily net assets up to and including $250 million and 1.13% of the Fund's Institutional Class average daily net assets in excess of $250 million. The Equity Fund pays Green Century a fee at a rate such that immediately following any payment to the Administrator, the total operating expenses of the Fund, on an annual basis, do not exceed 1.20% of the Fund's Individual Investor Class average daily net assets, and 0.90% of the Fund's Institutional Class average daily net assets. Prior to March 1, 2024, the Equity Fund paid Green Century a fee at a rate such that immediately following any payment to the Administrator, the total operating expenses of the Fund, on an annual basis, did not exceed 1.25% of the Fund's Individual Investor Class average daily net assets, and 0.95% of the Fund's Institutional Class average daily net assets. The MSCI International Index Fund pays Green Century a fee at a rate such that immediately following any payment to the Administrator, the total operating expenses of the Fund, on an annual basis, do not exceed 1.28% of the Fund's Individual Investor Class average daily net assets, and 0.98% of the Fund's Institutional Class average daily net assets.

(D) Subadministrator: Pursuant to a Subadministrative and Fund Accounting Services Agreement with the Administrator, UMB Fund Services, Inc. ("UMBFS") as Subadministrator and Fund Accountant, is responsible for conducting fund accounting and certain day-to-day administration of the Trust subject to the supervision and direction of the Administrator. For the year ended July 31, 2025, Green Century accrued fees of $259,987, $401,804, and $147,211 to UMBFS related to services performed on behalf of the Balanced Fund, the Equity Fund, and the MSCI International Index Fund, respectively.

(E) Index Agreements: The Equity Fund invests in the securities of the companies included in the MSCI KLD 400 Social ex Fossil Fuels Index (the "KLD Index"). The Index is owned and maintained by MSCI ESG Research ("MSCI"). For the use of the KLD Index for the Equity Fund, MSCI is paid by the Adviser an annual license fee of $29,745, plus the greater of $26,000 or at an annual rate of 0.05% on the first $100 million of average daily net assets, 0.04% on the next $100 million of average daily net assets, and 0.03% on average daily net assets in excess of $200 million. The MSCI International Index Fund invests in the securities included in the MSCI World ex USA SRI ex Fossil Fuels Index (the "World Index"). The Index is owned and maintained by MSCI. For the use of the World Index for the MSCI International Index Fund, MSCI is paid by the Adviser an annual license fee of $30,870, plus the greater of $25,000 or at an annual rate of 0.05% on the first $100 million of average daily net assets, 0.04% on the next $100 million of average daily net assets, and 0.03% on average daily net assets in excess of $200 million. For the year ended July 31, 2025, Green Century accrued fees of $262,294 and $111,747 to MSCI for the Equity Fund and MSCI International Index Fund, respectively.

NOTE 3 — Investment Transactions

For the year ended July 31, 2025, the Balanced Fund's cost of purchases and proceeds from sales of securities, other than short-term securities, aggregated $87,613,395 and $125,187,309 respectively. The Equity Fund's cost of purchases and proceeds from sales of securities, other than short-term securities, aggregated $57,367,404 and $94,933,576, respectively. The MSCI International Index Fund's cost of purchases and proceeds from sales of securities, other than short-term securities, aggregated $35,765,059 and $68,493,798, respectively.

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GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

NOTE 4 — Federal Income Tax Information

The tax basis of the components of distributable net earnings (deficit) at July 31, 2025 were as follows:

---

| | | | |
|:---|:---|:---|:---|
|  | BALANCED FUND | EQUITY FUND | MSCI INTERNATIONAL<br>INDEX FUND |
|  Undistributed ordinary income | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;87285 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;— | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1066937 |
|  Undistributed long-term capital gains | 16073479 | 26380114 | 1996749 |
|  Tax accumulated earnings | 16160764 | 26380114 | 3063686 |
|  Accumulated capital and other losses | (716749) | (199675) |  |
|  Unrealized appreciation (depreciation) | 117604621 | 461738025 | 35044082 |
|  Foreign currency translations |  |  | 86142 |
|  Distributable net earnings (deficit) | $133048636 | $487918464 | $38193910 |

---

Losses incurred after October 31 ("post-October" losses) within the taxable year are deemed to arise on the first day of the Fund's next taxable year.

As of July 31, 2025, the Balanced Fund and Equity Fund had $716,749 and $199,675 respectively of post-October capital losses which are deferred until August 1, 2025 for tax purposes.

The tax character of distributions paid during the fiscal year ended July 31, 2025 and the year ended July 31, 2024 were as follows:

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| | | | | |
|:---|:---|:---|:---|:---|
|  | BALANCED FUND | BALANCED FUND | EQUITY FUND | EQUITY FUND |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |
|  Ordinary income | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5170119 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3113789 | $&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1540832 | $&nbsp;&nbsp;&nbsp;&nbsp;1688009 |
|  Long-term capital gains | 21477576 | 8722533 | 6472368 |  |
|  | MSCI INTERNATIONAL INDEX FUND | MSCI INTERNATIONAL INDEX FUND |  |  |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |  |  |
|  Ordinary income | $2384133 | $2688660 |  |  |
|  Long-term capital gains |  |  |  |  |

---

------

GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

NOTE 5 — Capital Share Transactions

Capital Share transactions for the Balanced Fund, the Equity Fund and the MSCI International Index Fund were as follows:

---

| | | |
|:---|:---|:---|
|  | BALANCED FUND<br>INDIVIDUAL INVESTOR CLASS | BALANCED FUND<br>INDIVIDUAL INVESTOR CLASS |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |
|  Shares sold | 437926 | 510635 |
|  Reinvestment of dividends | 507012 | 237628 |
|  Shares redeemed | (1235201) | (1378980) |
|  | (290263) | (630717) |
|  | BALANCED FUND<br>INSTITUTIONAL CLASS | BALANCED FUND<br>INSTITUTIONAL CLASS |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |
|  Shares sold | 396324 | 647509 |
|  Reinvestment of dividends | 247674 | 105049 |
|  Shares redeemed | (833994) | (766329) |
|  | (189996) | (13771) |
|  | EQUITY FUND<br>INDIVIDUAL INVESTOR CLASS | EQUITY FUND<br>INDIVIDUAL INVESTOR CLASS |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |
|  Shares sold | 276387 | 443726 |
|  Reinvestment of dividends | 41978 | 6359 |
|  Shares redeemed | (653989) | (519947) |
|  | (335624) | (69862) |
|  | EQUITY FUND<br>INSTITUTIONAL CLASS | EQUITY FUND<br>INSTITUTIONAL CLASS |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |
|  Shares sold | 444714 | 546578 |
|  Reinvestment of dividends | 39722 | 12357 |
|  Shares redeemed | (530007) | (556153) |
|  | (45571) | 2782 |

---

------

GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

---

| | | |
|:---|:---|:---|
|  | MSCI INTERNATIONAL INDEX<br>INDIVIDUAL INVESTOR CLASS | MSCI INTERNATIONAL INDEX<br>INDIVIDUAL INVESTOR CLASS |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |
|  Shares sold | 509228 | 641629 |
|  Reinvestment of dividends | 39172 | 45497 |
|  Shares redeemed | (1457506) | (589765) |
|  | (909106) | 97361 |
|  | MSCI INTERNATIONAL INDEX<br>INSTITUTIONAL CLASS | MSCI INTERNATIONAL INDEX<br>INSTITUTIONAL CLASS |
|  | YEAR ENDED<br>JULY 31, 2025 | YEAR ENDED<br>JULY 31, 2024 |
|  Shares sold | 1058859 | 1560326 |
|  Reinvestment of dividends | 123073 | 148184 |
|  Shares redeemed | (2547427) | (2842556) |
|  | (1365495) | (1134046) |

---

Note 6 — Derivative and Hedging Disclosure

Derivatives and Hedging requires enhanced disclosures about the Funds' derivative and hedging activities, including how such activities are accounted for and their effects on the Funds' financial position and performance. The MSCI International Index Fund invested in forward foreign currency exchange contracts during the year ended July 31, 2025.

The effects of these derivative instruments on the Fund's financial position and financial performance as reflected in the Statements of Assets and Liabilities and Statements of Operations are presented in the tables below. The fair values of derivative instruments, as of July 31, 2025, by risk category are as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
| MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX |
|  | Asset Derivatives | Asset Derivatives | Liability Derivatives | Liability Derivatives |
| Derivatives designated as hedging instruments | Statements of Assets<br>and Liabilities | Value | Statements of Assets<br>and Liabilities | Value |
|  Foreign Exchange Contract | Unrealized<br>appreciation<br>on forward<br>foreign<br>currency<br>exchange<br>contracts | $&nbsp;&nbsp;&nbsp;&nbsp;6953 | Unrealized<br>depreciation<br>on forward<br>foreign<br>currency<br>exchange<br>contracts | $&nbsp;&nbsp;&nbsp;&nbsp;26733 |

---

------

GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS continued

The effects of derivative instruments on the Statements of Operations for the year ended July 31, 2025, are as follows:

---

| | |
|:---|:---|
| MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX |
| Amount of Realized Gain or (Loss) on Derivatives Recognized in the Statements of Operations | Amount of Realized Gain or (Loss) on Derivatives Recognized in the Statements of Operations |
| Derivatives not designated as hedging instruments | Forward Contracts |
|  Foreign exchange contracts | $53901 |
| MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX |
| Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in the Statements of Operations | Change in Unrealized Appreciation (Depreciation) on Derivatives Recognized in the Statements of Operations |
| Derivatives not designated as hedging instruments | Forward Contracts |
|  Foreign exchange contracts | $(32032) |

---

The average quarterly volume of derivative instruments held by the Funds during the year ended July 31, 2025 are as follows:

---

| | | |
|:---|:---|:---|
| MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX | MSCI INTERNATIONAL INDEX |
|  |  | Forward Contracts |
|  Foreign exchange purchase contracts | Notional Value | $1052195 |
|  Foreign exchange sale contracts | Notional Value | $(502615) |

---

NOTE 7 — Segment Reporting

Operating segments are components of an entity that engage in business activities, have discrete financial information available, and have their operating results regularly reviewed by a chief operating decision maker ("CODM") when assessing segment performance and making decisions about segment resources. Officers of the Advisor act as the Funds' CODM. The Funds' operations are managed to a single investment objective, as detailed in its prospectus, through the execution of the Funds' investment strategies. The Funds' portfolio composition, total returns, expense ratios and changes in net assets used by the CODM to assess segment performance and make resource allocations are consistent with the information presented within the Funds' Financial Statements. The accompanying Financial Statements detail the Funds' segment assets, liabilities, income, and expenses.

The accounting policies of the segment are the same as those described in the summary of significant accounting policies. The financial statements include all details of the segment assets, segment revenue and expenses; and reflect the financial results of the segment.

NOTE 8 — Market Disruption and Geopolitical Risks

Certain local, regional or global events such as war (including Russia's invasion of Ukraine and the Israel-Hamas war), acts of terrorism, the spread of infectious illnesses and/or other public health issues, or other events may have a significant impact on a security or instrument. These types of events and others like them are collectively referred to as "Market Disruptions and Geopolitical Risks" and they may have adverse impacts on the worldwide economy, as well as the economies of individual countries, the financial health of individual companies and the market in general in significant and unforeseen ways. Some of the impacts noted in recent times include but are not limited to embargos, political actions, supply chain disruptions, restrictions to investment and/or monetary movement including the forced selling of securities or the inability to participate in impacted markets. The duration of these events could adversely

------

GREEN CENTURY FUNDS NOTES TO FINANCIAL STATEMENTS concluded

affect the Fund's performance, the performance of the securities in which the Fund invests and may lead to losses on your investment. The ultimate impact of Market Disruption and Geopolitical Risks on the financial performance of the Fund's investments is not reasonably estimable at this time. Management is actively monitoring these events.

Recently, the United States has enacted or proposed to enact significant new tariffs, and various federal agencies have been directed to further evaluate key aspects of U.S. trade policy, which could potentially lead to significant changes to current policies, treaties, and tariffs. There continues to exist significant uncertainty about the future relationship between the U.S. and other countries with respect to such trade policies, treaties and tariffs. These developments, or the perception that any of them could occur, may have a material adverse effect on global trade, in particular, trade between the impacted nations and the U.S.; global financial markets' stability; and global economic conditions. These events could, in turn, adversely affect the Fund's overall performance.

NOTE 9 — Subsequent Events

Subsequent to July 31, 2025 and through the date on which the financial statements were available for issuance, management has evaluated subsequent events requiring disclosure.

There were no other events requiring accrual or disclosure.

------

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

---

| | |
|:---|:---|
| ![LOGO](g95172g41v14.jpg) | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;KPMG LLP<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Two Financial Center<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;60 South Street<br> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Boston, MA 02111 |

---

To the Shareholders and Board of Trustees

Green Century Funds:

*Opinion on the Financial Statements* 

We have audited the accompanying statements of assets and liabilities of Green Century Balanced Fund, Green Century Equity Fund, and Green Century MSCI International Index Fund (the Funds), three of the Funds comprising Green Century Funds, including the portfolios of investments, as of July 31, 2025, the related statements of operations for the year then ended, the statements of changes in net assets for each of the years in the two-year period then ended, and the related notes (collectively, the financial statements) and the financial highlights for each of the years or periods in the five-year period then ended. In our opinion, the financial statements and financial highlights present fairly, in all material respects, the financial position of the Funds as of July 31, 2025, the results of their operations for the year then ended, the changes in their net assets for each of the years in the two-year period then ended, and the financial highlights for each of the years or periods in the five-year period then ended, in conformity with U.S. generally accepted accounting principles.

*Basis for Opinion* 

These financial statements and financial highlights are the responsibility of the Funds' management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Funds in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements and financial highlights, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements and financial highlights. Such procedures also included confirmation of securities owned as of July 31, 2025, by correspondence with custodians and brokers; when replies were not received from brokers, we performed other auditing procedures. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements and financial highlights. We believe that our audits provide a reasonable basis for our opinion.

![LOGO](g95172g40_86.jpg)

We have served as the auditor of one or more Green Century investment companies since 1995.

Boston, Massachusetts

September 17, 2025

KPMG LLP, a Delaware limited liability partnership and a member firm of

the KPMG global organization of independent member firms affiliated with

KPMG International Limited, a private English company limited by guarantee.

------

TAX INFORMATION

For the year ended July 31, 2025, the Balanced Fund, Equity Fund and MSCI International Fund, respectively, had 57.00%, 100% and 0.00% of dividends paid from net investment income qualified for the 70% dividends received deduction available to corporate shareholders.

For the year ended July 31, 2025, the Balanced Fund, Equity Fund and MSCI International Fund, respectively, had 48.71%, 100% and 100% of dividends paid from net investment income, designated as qualified dividend income.

------

GREEN CENTURY FUNDS TRUSTEES AND OFFICERS

The following table presents information about each Trustee and each Officer of the Trust as of July 31, 2025. Each Trustee and each Officer of the Trust noted as an "interested person" (as defined in the 1940 Act), and noted with an asterisk, is interested by virtue of his or her position with Green Century as described below. The Trust does not hold annual shareholder meetings for the purpose of electing Trustees, and Trustees are not elected for fixed terms. This means that each Trustee will be elected to hold office until his or her successor is elected or until he or she retires, resigns, dies, or is removed from office.

The Trust's Registration Statement includes additional information about the Trustees and is available, without charge, upon request by calling the following toll-free number: 1-800-93-GREEN.

---

| | | | |
|:---|:---|:---|:---|
| NAME, ADDRESS AND AGE | POSITION(S) HELD<br> WITH THE TRUST<br> AND LENGTH OF<br> TIME SERVED | PRINCIPAL OCCUPATION(S) DURING<br> PAST 5 YEARS AND OTHER DIRECTORSHIPS HELD | NUMBER OF<br>PORTFOLIOS<br>OVERSEEN<br>BY TRUSTEE |
| Independent Trustees: | Independent Trustees: |  |  |
|  Jonathan Darnell<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 65 | Trustee since 2014 | Chief Financial Officer, AltEnergy Acquisition Corp. (since 2021); Member, AltEnergy Acquisition Sponsor (since 2021); Managing Director, AltEnergy, LLC, an investment firm, (since 2016); Managing Director, Pickwick Capital Partners (since 2014); President/ Founder, Patolan Partners, an advisory and investment firm (since 2011). | 3 |
|  Daniel S. Kern<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 64 | Trustee since 2015 | Chief Investment Officer, Nixon Peabody LLC (Since 2023); Chief Investment Officer, TFC Financial Management (2015-2023); President and Chief Investment Officer, Advisor Partners LLC (2011 to 2015); Board member, Wealthramp (since 2015). | 3 |
|  Sanford Pooler<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 68 | Trustee since 2021 | Deputy Town Manager/Finance Director, Town of Arlington, MA (since 2016); Finance Director, Town of Amherst, MA (2011-2016). | 3 |
|  Mary Raftery<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 60 | Trustee since 2009 | Senior Advisor, Funder Collaborations, ClimateWorks Foundation (since 2014); Organizational Development Consultant, Self-employed (since 2007). | 3 |
|  James H. Starr<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 77 | Chairperson since 2009; Trustee since 1991 | Retired (since 2018); Consultant, Rainville Petito, PLLC (2016 to 2018); Consultant, Danielson Rainville Attorneys, PLLC (2015); Director and President, Gunnison Valley Housing Foundation (since 2010); Director (since 2011) and President (2015-2018), Coal Creek Watershed Coalition. | 3 |

---

------

---

| | | | |
|:---|:---|:---|:---|
| NAME, ADDRESS AND AGE | POSITION(S) HELD<br> WITH THE TRUST<br> AND LENGTH OF<br> TIME SERVED | PRINCIPAL OCCUPATION(S) DURING<br> PAST 5 YEARS AND OTHER DIRECTORSHIPS HELD | NUMBER OF<br>PORTFOLIOS<br>OVERSEEN<br>BY TRUSTEE |
|  Thomas Subak<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 61 | Trustee since 2021 | Independent Consultant, Tom Subak LLC (since 2020); Independent Consultant and Chief Partnership Officer, Catchafire, a nonprofit organization (2019-2020); Chief Strategy Officer and Assistant to the President, Planned Parenthood Federation of America (2016-2018). | 3 |
| Interested Trustees: |  |  |  |
|  Douglas H. Phelps\*<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 78 | Trustee since 1997 | President and Chief Executive Officer, The Public Interest Network (since 1982); Director, Green Century Capital Management, Inc. (since 1996). | 3 |
|  Wendy Wendlandt\*<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 63 | Trustee since 1991 | Director, Green Century Capital Management, Inc. (since 2006); Senior Vice President and Political Director, The Public Interest Network (since 1989); Senior Staff, Fund for Public Interest (since 1989); Acting President, Environment America (since 2020). | 3 |
| Officers: |  |  |  |
|  Leslie Samuelrich\*<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age 61 | President since 2021 | President (since 2015), Green Century Capital Management, Inc. | Not<br>applicable |
|  Matthew Dunlap\*<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 52 | Treasurer since 2021 | Senior Finance Manager (since 2020) and Treasurer (since 2021), Green Century Capital Management, Inc.; Assistant Vice President, State Street Corporation (2005-2019). | Not<br>applicable |
|  Robert J. Guerin\*<br> 114 State Street<br> Suite 200<br> Boston, MA 02109<br> Age: 59 | Chief Compliance Officer, Secretary and Assistant Treasurer since May 2024 | Chief Compliance Officer, Secretary and Assistant Treasurer (since 2024), Green Century Capital Management , Inc.; Senior Vice President , Chief Compliance Officer, Allspring Funds Management LLC. (2007-2023) | Not<br>applicable |

---

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YOUR NOTES

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YOUR NOTES

------

INVESTMENT ADVISER AND ADMINISTRATOR

Green Century Capital Management, Inc.

114 State Street

Boston, MA 02109

1-800-93-GREEN

www.greencentury.com

info@greencentury.com

INVESTMENT SUBADVISER (Balanced Fund)

Trillium Asset Management, LLC

Two Financial Center

60 South Street, Suite 1100

Boston, MA 02111

INVESTMENT SUBADVISER (Equity Fund and International Fund)

Northern Trust Investments, Inc.

50 South LaSalle Street

Chicago, IL 60603

SUBADMINISTRATOR

UMB Fund Services, Inc. (Subadministrator)

235 West Galena Street

Milwaukee, WI 53212

DISTRIBUTOR

Distributor Services, LLC (an affiliate of ACA Group)

140 E. 45th Street, 29th Floor

(2 Grand Central Tower)

New York, NY 10017

CUSTODIAN

UMB Bank, n.a.

928 Grand Blvd

Kansas City, MO 64106

TRANSFER AGENT

Atlantic Shareholder Services, LLC

Three Canal Plaza

Portland, ME 04101

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

KPMG LLP

Two Financial Center 60 South Street

Boston, MA 02111

![LOGO](g95172g83p75.jpg)

## Balanced

## Fund

## Equity

## Fund

## International

## Fund
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ![LOGO](g95172g88x31.jpg) <br> An investment for your future.<br>Printed on recycled paper with soy-based ink.<br>

------

(b) The information required by Item 13 of Form N-1A is included as part of the financial statements filed under Item 7(a) of this Form.

#### Item 8. Changes in and Disagreements with Accountants for Open-End Management Investment Companies
Not applicable.

#### Item 9. Proxy Disclosures for Open-End Management Investment Companies
Not applicable.

#### Item 10. Remuneration Paid to Directors, Officers, and Others of Open-End Management Investment Companies
The aggregate remuneration paid by the company during the period covered by the report is as follows:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) All directors and all members of any advisory board for regular compensation: $30,000 which is paid by the investment adviser.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) Each director and each member of an advisory board for special compensation: Not Applicable.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(3) All officers: Not Applicable

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(4) Each person of whom any officer or director of the Fund is an affiliated person: Investment adviser compensation included under Item 7.

#### Item 11. Statement Regarding Basis for Approval of Investment Advisory Contract
Not applicable.

#### Item 12. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies
Not applicable.

------

#### Item 13. Portfolio Managers of Closed-End Management Investment Companies
Not applicable.

#### Item 14. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers
Not applicable

#### Item 15. Submission of Matters to a Vote of Security Holders
There were no material changes to the procedures by which shareholders may recommend nominees to the registrant's Board of Trustees.

#### Item 16. Controls and Procedures
(a) Based on an evaluation of the disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended, the "Disclosure Controls") as of a date within 90 days of the filing date (the "Filing Date") of this Form N-CSR (the "Report"), the registrant's principal executive officer and principal financial officer have concluded that the Disclosure Controls are effectively designed to ensure that information that is required to be disclosed by the registrant in the Report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms, including ensuring that information required to be disclosed in the Report is accumulated and communicated to the registrant's management, including the registrant's principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosures.

(b) There were no changes in the registrant's internal controls over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) that occurred during the fiscal period covered by this report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting.

#### Item 17. Disclosure of securities lending activities for closed-end management investment companies.
Not applicable.

#### Item 18. Recovery of Erroneously Awarded Compensation
(a) Not applicable.

(b) Not applicable.

------

#### Item 19. Exhibits

---

| | |
|:---|:---|
| (a)(1) | [Code of Ethics: Incorporated by reference to the Registrant's Form N-CSR filed on October 7, 2013.](http://www.sec.gov/Archives/edgar/data/877232/000119312513392896/d592056dex99code.htm) |
| (2) | Not applicable. |
| (3) | [Certifications for each principal executive and principal financial officer as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended, (17 CFR 270.30a-2(a)) are filed herewith.](d95172dex99cert.htm) |
| (4) | Not applicable |
| (5) | Not applicable |
| (b) | [Certifications required by Rule 30a-2(b) under the Investment Company Act of 1940, as amended, (17 CFR 270.30a-2(b)) are filed herewith.](d95172dex99906cert.htm) |

---

------

#### SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

---

| |
|:---|
| Green Century Funds |
| /s/ Leslie Samuelrich |
| Leslie Samuelrich |
| President and Principal Executive Officer |
| October 7, 2025 |

---

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

---

| |
|:---|
| /s/ Leslie Samuelrich |
| Leslie Samuelrich |
| President and Principal Executive Officer |
| October 7, 2025 |
| /s/ Matthew Dunlap |
| Matthew Dunlap |
| Treasurer and Principal Financial Officer |
| October 7, 2025 |

---

## Ex-99.Cert

EX-99.CERT

**Green Century Funds** 

**Exhibit 19(a)(3) to Form N-CSR** 

CERTIFICATIONS PURSUANT TO SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

I, Leslie Samuelrich, certify that:

1. I have reviewed this report on Form N-CSR of Green Century Funds;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the
periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is
being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Disclosed in this report any change in the registrant's internal control over financial reporting that
occurred during the fiscal period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

------

5. The registrant's other certifying officer and I have disclosed to the registrant's auditors and the
audit committee of the registrant's board of trustees (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant's internal control over financial reporting.

---

| |
|:---|
| /s/ Leslie Samuelrich |
| Leslie Samuelrich |
| President and Principal Executive Officer |
| October 7, 2025 |

---

------

**Green Century Funds** 

**Exhibit 19(a)(3) to Form N-CSR** 

CERTIFICATIONS PURSUANT TO SECTION 302 OF THE

SARBANES-OXLEY ACT OF 2002

I, Matthew Dunlap, certify that:

1. I have reviewed this report on Form N-CSR of Green Century Funds;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations, changes in net assets, and cash flows (if the financial statements are required to include a statement of cash flows) of the registrant as of, and for, the
periods presented in this report;

4. The registrant's other certifying officer and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940) and internal control over financial reporting (as defined in Rule 30a-3(d) under the Investment Company Act of 1940) for the registrant and have:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is
being prepared;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting
principles;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of a date within 90 days prior to the filing date of this report based on such evaluation; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d) Disclosed in this report any change in the registrant's internal control over financial reporting that
occurred during the fiscal period covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

------

5. The registrant's other certifying officer and I have disclosed to the registrant's auditors and the
audit committee of the registrant's board of trustees (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize, and report financial information; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the registrant's internal control over financial reporting.

---

| |
|:---|
| /s/ Matthew Dunlap |
| Matthew Dunlap |
| Treasurer and Principal Financial Officer |
| October 7, 2025 |

---

## Exhibit 99.906

EX-99.906CERT

**Green Century Funds** 

**Exhibit 19(b) to Form N-CSR** 

CERTIFICATIONS PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002

I, Leslie Samuelrich, President and Principal Executive Officer of the Green Century Funds, certify that to my knowledge:

1. The Form N-CSR of the registrant (the "Report") fully
complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and
results of operations of the registrant.

---

| |
|:---|
| /s/ Leslie Samuelrich |
| Leslie Samuelrich<br> President and Principal Executive Officer<br> October 7, 2025 |

---

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission (the "Commission") or its staff upon request.

This certification is being furnished to the Commission solely pursuant to 18 U.S.C. (S) 1350 and is not being filed as part of the Form N-CSR with the Commission.

------

**Green Century Funds** 

**Exhibit 19(b) to Form N-CSR** 

CERTIFICATIONS PURSUANT TO SECTION 906 OF THE

SARBANES-OXLEY ACT OF 2002

I, Matthew Dunlap, Treasurer and Principal Financial Officer of the Green Century Funds, certify that to my knowledge:

1. The Form N-CSR of the registrant (the "Report") fully
complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and
results of operations of the registrant.

---

| |
|:---|
| /s/ Matthew Dunlap |
| Matthew Dunlap<br> Treasurer and Principal Financial Officer<br> October 7, 2025 |

---

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission (the "Commission") or its staff upon request.

This certification is being furnished to the Commission solely pursuant to 18 U.S.C. (S) 1350 and is not being filed as part of the Form N-CSR with the Commission.