# EDGAR Filing Document

**Accession Number:** 0000063090
**File Stem:** 0001193125-26-023401
**Filing Date:** 2026-1
**Character Count:** 208840
**Document Hash:** 961bed32f94a95f601b65d40c44ef802
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-023401.hdr.sgml**: 20260127

**ACCESSION NUMBER**: 0001193125-26-023401

**CONFORMED SUBMISSION TYPE**: N-CSR

**PUBLIC DOCUMENT COUNT**: 29

**CONFORMED PERIOD OF REPORT**: 20251130

**FILED AS OF DATE**: 20260127

**DATE AS OF CHANGE**: 20260127

**EFFECTIVENESS DATE**: 20260127

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MASSACHUSETTS INVESTORS GROWTH STOCK FUND
- **CENTRAL INDEX KEY:** 0000063090

**ORGANIZATION NAME:**
- **EIN:** 041885327
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** N-CSR
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-00859
- **FILM NUMBER:** 26562121

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 18006372929

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **STREET 2:** 21ST FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MASSACHUSETTS INVESTORS GROWTH STOCK FUND INC
- **DATE OF NAME CHANGE:** 19920414

## Series and Classes Contracts Data

### Massachusetts Investors Growth Stock Fund (Series ID: S000000695)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000002023 | A            | MIGFX           |
| C000002024 | R3           | MIGHX           |
| C000002025 | R4           | MIGKX           |
| C000002029 | B            | MIGBX           |
| C000002030 | C            | MIGDX           |
| C000002031 | I            | MGTIX           |
| C000002034 | R1           | MIGMX           |
| C000002036 | R2           | MIRGX           |
| C000112291 | R6           | MIGNX           |

?xml version='1.0' encoding='ASCII'? 43f33dae-d587-4246-bd9c-b63cc6837e51

#### 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

#### 811-00859

#### MASSACHUSETTS INVESTORS GROWTH STOCK TRUST
(Exact name of registrant as specified in charter)

------

111 Huntington Avenue, Boston, Massachusetts 02199

(Address of principal executive offices) (Zip code)

Christopher R. Bohane

Massachusetts Financial Services Company

111 Huntington Avenue

Boston, Massachusetts 02199

(Name and address of agents for service)

#### Registrant's telephone number, including area code:
&nbsp;&nbsp;&nbsp;&nbsp;(617) 954-5000

#### Date of fiscal year end:

#### November 30

#### Date of reporting period:

#### November 30, 2025

#### ITEM 1. REPORTS TO STOCKHOLDERS.
Item 1(a):

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class A-MIGFX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| A | $73 | 0.70% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class A shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 7.31%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%. 

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high. 

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September. 

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war. 

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance. 

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns. 

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class A over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests. This graph includes the deduction of the maximum applicable sales charge.

![Fund Performance - Growth of 10K](chartimages_2216613.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| A without sales charge | 7.31% | 10.92% | 14.02% |
| A with initial sales charge (5.75%) | 1.14% | 9.62% | 13.35% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/a for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

 **Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

 **Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGA-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class B-MIGBX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| B | $150 | 1.45% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class B shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 6.52%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%.

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high.

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September.

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war.

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance.

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns.

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class B over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2215861.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| B without sales charge | 6.52% | 10.09% | 13.17% |
| B with CDSC (declining over six years from 4% to 0%)<sup>×</sup> | 2.72% | 9.82% | 13.17% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/b for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

*#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

**Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

**Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGB-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class C-MIGDX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| C | $151 | 1.46% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class C shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 6.53%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%.

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high.

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September.

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war.

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance.

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns.

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance.

#### FUND PERFORMANCE
 ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class C over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2215955.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| C without sales charge | 6.53% | 10.09% | 13.17% |
| C with CDSC (1% for 12 months)<sup>×</sup> | 5.58% | 10.09% | 13.17% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

∆ Source: FactSet Research Systems Inc. <br> × Assuming redemption at the end of the applicable period.

CDSC – Contingent Deferred Sales Charge.

If the 1-year without sales charge return included adjustments made for financial reporting purposes in accordance with U.S. generally accepted accounting principles, the return would be 6.51%.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/c for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

*#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

**Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

**Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

**Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGC-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class I-MGTIX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| I | $48 | 0.46% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class I shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 7.57%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%. 

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high. 

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September. 

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war. 

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance. 

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns. 

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class I over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2216049.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| I without sales charge | 7.57% | 11.20% | 14.30% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/i for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

 **Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

 **Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGI-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class R1-MIGMX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R1 | $151 | 1.46% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class R1 shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 6.51%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%. 

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high. 

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September. 

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war. 

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance. 

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns. 

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R1 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2216143.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R1 without sales charge | 6.51% | 10.09% | 13.16% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r1 for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

 **Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

 **Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGR1-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class R2-MIRGX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R2 | $99 | 0.96% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class R2 shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 7.04%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%. 

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high. 

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September. 

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war. 

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance. 

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns. 

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R2 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2216237.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R2 without sales charge | 7.04% | 10.64% | 13.73% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r2 for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

 **Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

 **Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGR2-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class R3-MIGHX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R3 | $74 | 0.71% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class R3 shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 7.30%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%. 

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high. 

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September. 

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war. 

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance. 

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns. 

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R3 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2216331.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R3 without sales charge | 7.30% | 10.92% | 14.02% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r3 for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

 **Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

 **Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGR3-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class R4-MIGKX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R4 | $48 | 0.46% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class R4 shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 7.58%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%. 

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high. 

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September. 

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war. 

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance. 

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns. 

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R4 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2216425.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R4 without sales charge | 7.58% | 11.19% | 14.30% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r4 for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

 **Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

 **Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGR4-ANN

![MFSLOGO_RED.EPS](images_1184.jpg)

Massachusetts Investors

Growth Stock Fund

![TSR_Ribbon_red](images_1189.jpg)

Class R6-MIGNX

Annual Shareholder Report

This annual shareholder report contains important information about Massachusetts Investors Growth Stock Fund for the period of December 1, 2024 to November 30, 2025. You can find additional information about the fund at funds.mfs.com. You can also request this information by contacting us at 1-800-225-2606 or by sending an e-mail request to orderliterature@mfs.com.

FUND EXPENSES

What were the fund costs for the last year?

---

| | | |
|:---|:---|:---|
| *(based on a hypothetical $10,000 investment)* |  |  |
| Class Name | Costs of a $10,000 investment | Costs paid as a percentage of a $10,000 investment |
| R6 | $38 | 0.37% |

---

MANAGEMENT'S DISCUSSION OF FUND PERFORMANCE

* For the twelve months ended November 30, 2025, Class R6 shares of the Massachusetts Investors Growth Stock Fund (fund) provided a total return of 7.69%, at net asset value. This compares with a return of 13.59% for the fund's benchmark, the Russell 3000<sup>®</sup> Index. The fund's other benchmark, the Russell 1000<sup>®</sup> Growth Index, generated a return of 20.35%. 

* Global equity markets reached record levels during the period, withstanding considerable volatility amid tariffs, geopolitical conflict and high levels of uncertainty. In the US, a pro-growth tax and spending bill was signed into law, while in Europe, renewed focus on defense and infrastructure spending brightened the outlook. In Japan, the election of a pro-growth prime minister sent stocks to new highs. Optimism over artificial intelligence remained quite high. 

* Considerable progress was made in trade talks between the US and many major trading partners, with a fragile truce between the US and China extended through late 2026. US tariffs remained high on goods from countries such as India and Brazil. 

* Moderating inflation pressures allowed many global central banks to ease monetary policy during the period. Amid a difficult policymaking environment and slower job growth, the Federal Reserve resumed easing policy in September. 

* In fixed income markets, global bond yields peaked in mid-January, then gradually declined, ending the reporting period lower than at the start of the period, while experiencing waves of volatility in between. Credit spreads remained tight and near historical lows, despite a brief widening in April and May due to tariff concerns. US bond market volatility, as measured by the Merrill Lynch Option Volatility Estimate (MOVE) Index, ended near session lows after rising around the time of the US presidential election and the start of the trade war. 

* Top contributors to performance relative to the Russell 1000<sup>®</sup> Growth Index:

The fund's underweight position in the consumer discretionary sector strengthened relative performance. 

* Top detractors from performance relative to the Russell 1000<sup>®</sup> Growth Index:

Weak stock selection and an underweight position in the information technology sector held back relative returns. 

The combination of stock selection and overweight positions in both the financials and industrials sectors further weighed on the fund's relative performance. 

#### FUND PERFORMANCE
  ***The fund's past performance is not a good predictor of the fund's future performance.*** The graph and table below do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares. The graph and table below assume reinvestment of dividends and capital gain distributions.

Growth of a Hypothetical $10,000 Investment

This graph shows the performance of a hypothetical $10,000 investment in Class R6 over a ten year period or since inception, if shorter, in comparison to (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests.

![Fund Performance - Growth of 10K](chartimages_2216519.jpg)

#### Average Annual Total Returns through 11/30/25
This table shows the average annual total returns of the class of shares noted for the periods shown, both with (if any) and without sales charges. It also shows the average annual total returns of (i) a broad measure of market performance and (ii) an additional index that MFS believes more closely reflects the market segments in which the fund invests, over the same periods.

---

| | | | |
|:---|:---|:---|:---|
| **Share Class** | **1-yr** | **5-yr** | **10-yr** |
| R6 without sales charge | 7.69% | 11.30% | 14.41% |
| **Comparative Benchmark(s)** |  |  |  |
| Russell 3000<sup>®</sup> Index ∆ | 13.59% | 14.15% | 14.05% |
| Russell 1000<sup>®</sup> Growth Index ∆ | 20.35% | 16.51% | 18.03% |

---

&nbsp;&nbsp;&nbsp;&nbsp;∆ Source: FactSet Research Systems Inc.

#### Notes to Fund Performance
Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

Visit mfs.com/perf/r6 for more recent performance information.

FUND STATISTICS AS OF 11/30/25

---

| | | | |
|:---|:---|:---|:---|
| Net Assets ($): | 11330589221 | Total Management Fee ($)#: | 39625852 |
| Total Number of Holdings: | 54 | Portfolio Turnover Rate (%): | 21 |

---

 *#* Includes the effect of any management fee waivers, if applicable.

Where the fund holds derivatives, they are not included in the total number of portfolio holdings.

PORTFOLIO COMPOSITION (BASED ON TOTAL INVESTMENTS AS OF 11/30/25)

 **Portfolio structure**

---

| | |
|:---|:---|
| Equities | 98.3% |
| Money Market Funds | 1.7% |

---

 **Equity sectors**

---

| | |
|:---|:---|
| Information Technology | 43.2% |
| Financials | 12.5% |
| Health Care | 11.4% |
| Industrials | 10.2% |
| Consumer Discretionary | 9.3% |
| Communication Services | 4.8% |
| Consumer Staples | 3.8% |
| Utilities | 2.0% |
| Materials | 1.0% |
| Real Estate | 0.1% |

---

 **Top ten holdings**

---

| | |
|:---|:---|
| Microsoft Corp. | 14.0% |
| NVIDIA Corp. | 9.1% |
| Apple, Inc. | 5.9% |
| Amphenol Corp., "A" | 3.6% |
| Visa, Inc., "A" | 3.5% |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 3.4% |
| Accenture PLC, "A" | 3.1% |
| Alphabet, Inc., "A" | 2.9% |
| Aon PLC | 2.7% |
| TransUnion | 2.6% |

---

MFS uses the Global Industry Classification Standard (GICS<sup>®</sup>) for sector/industry reporting. MFS has applied its own internal sector/industry classification methodology for equity securities and non-equity securities that are unclassified by GICS.

#### ADDITIONAL INFORMATION
You can find the fund's summary prospectus, prospectus, most recent annual and semiannual reports, financial information, portfolio holdings, and statement of additional information online at funds.mfs.com. Proxy voting information is available without charge by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, or by visiting the SEC's website at http://www.sec.gov.

#### IMPORTANT NOTICE REGARDING DELIVERY OF SHAREHOLDER MATERIALS
The fund produces financial annual and semiannual reports and updates its summary prospectus and prospectus annually. To avoid sending duplicate copies of materials to households, only one copy of the fund's annual and semiannual report and summary prospectus may be mailed to shareholders having the same last name and residential address on the fund's records. However, any shareholder may contact the fund at 1-800-225-2606 or the shareholder's financial intermediary to request that copies of these reports and summary prospectuses be sent personally to that shareholder.

MIGR6-ANN

------

#### &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; Item 1(b):
Not applicable.

------

#### &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; ITEM 2. CODE OF ETHICS.
The Registrant has adopted a Code of Ethics (the "Code") pursuant to Section 406 of the Sarbanes-Oxley Act and as defined in Form N-CSR that applies to the Registrant's principal executive officer and principal financial and accounting officer. During the period covered by this report, the Registrant has not amended any provision in the Code that relates to an element of the Code's definition enumerated in paragraph (b) of Item 2 of this Form N-CSR. During the period covered by this report, the Registrant did not grant a waiver, including an implicit waiver, from any provision of the Code. A copy of the Code is attached hereto as EX-99.COE.

------

#### &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; ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT.
Messrs. Steven E. Buller, Clarence Otis, Jr., and Paula E. Smith, members of the Audit Committee, have been determined by the Board of Trustees in their reasonable business judgment to meet the definition of "audit committee financial expert" as such term is defined in Form N-CSR. In addition, Messrs. Buller, Otis, and Smith are "independent" members of the Audit Committee (as such term has been defined by the Securities and Exchange Commission in regulations implementing Section 407 of the Sarbanes-Oxley Act of 2002). The Securities and Exchange Commission has stated that the designation of a person as an audit committee financial expert pursuant to this Item 3 on the Form N-CSR does not impose on such a person any duties, obligations or liability that are greater than the duties, obligations or liability imposed on such person as a member of the Audit Committee and the Board of Trustees in the absence of such designation or identification.

------

**ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES.**

**Items 4(a) through 4(d) and 4(g):**

The Board of Trustees has appointed Ernst & Young LLP ("E&Y") to serve as independent accountants to the Registrant (hereinafter the "Registrant" or the "Fund"). The tables below set forth the audit fees billed to the Fund as well as fees for non-audit services provided to the Fund and/or to the Fund's investment adviser, Massachusetts Financial Services Company ("MFS"), and to various entities either controlling, controlled by, or under common control with MFS that provide ongoing services to the Fund ("MFS Related Entities").

For the fiscal years ended November 30, 2025 and 2024, audit fees billed to the Fund by E&Y were as follows:

---

| | | | |
|:---|:---|:---|:---|
| &nbsp;&nbsp;**Fees billed by E&Y:** |  | &nbsp;&nbsp;&nbsp;&nbsp;**Audit Fees** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit Fees** |
|  | **2025** |  | **2024** |
| &nbsp;&nbsp;Massachusetts Investors Growth Stock Fund | 70,756 |  | 65,558 |

---

For the fiscal years ended November 30, 2025 and 2024, fees billed by E&Y for audit-related, tax and other services provided to the Fund and for audit-related, tax and other services provided to MFS and MFS Related Entities were as follows:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;**Fees billed by E&Y:** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** |
|  | **2025** | **2024** | **2025** | **2024** | **2025** | **2024** |
| &nbsp;&nbsp;To Massachusetts Investors | 0 | 0 | 632 | 660 | 0 | 0 |
| &nbsp;&nbsp;Growth Stock Fund |  |  |  |  |  |  |
| &nbsp;&nbsp;**Fees billed by E&Y:** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;**Audit-Related Fees<sup>1</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**Tax Fees<sup>2</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**All Other Fees<sup>3</sup>** |
|  | **2025** | **2024** | **2025** | **2024** | **2025** | **2024** |
| &nbsp;&nbsp;To MFS and MFS Related | 0 | 0 | 0 | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;0 | 245568 | 3600 |
| &nbsp;&nbsp;Entities of Massachusetts |  |  |  |  |  |  |
| &nbsp;&nbsp;Investors Growth Stock Fund\* |  |  |  |  |  |  |
| &nbsp;&nbsp;**Fees Billed by E&Y:** |  |  | **Aggregate Fees for Non-audit Services** | **Aggregate Fees for Non-audit Services** | **Aggregate Fees for Non-audit Services** |  |
|  |  |  | **2025** |  | **2024** |  |
| &nbsp;&nbsp;To Massachusetts Investors Growth Stock | &nbsp;&nbsp;To Massachusetts Investors Growth Stock |  | 496729 |  | 310200 |  |
| &nbsp;&nbsp;Fund, MFS and MFS Related Entities<sup>#</sup> | &nbsp;&nbsp;Fund, MFS and MFS Related Entities<sup>#</sup> |  |  |  |  |  |

---

\*This amount reflects the fees billed to MFS and MFS Related Entities for non-audit services relating directly to the operations and financial reporting of the Fund (portions of which services also related to the operations and financial reporting of other funds within the MFS Funds complex).

# This amount reflects the aggregate fees billed by E&Y for non-audit services rendered to the Fund and for non- audit services rendered to MFS and the MFS Related Entities.

<sup>1</sup> The fees included under "Audit-Related Fees" are fees related to assurance and related services that are reasonably related to the performance of the audit or review of financial statements, but not reported under ''Audit Fees,'' including accounting consultations, agreed-upon procedure reports, attestation reports, comfort letters and internal control reviews.

<sup>2</sup> The fees included under "Tax Fees" are fees associated with tax compliance, tax advice and tax planning, including services relating to the filing or amendment of federal, state or local income tax returns, regulated investment company qualification reviews and tax distribution and analysis.

<sup>3</sup> The fees included under "All Other Fees" are fees for products and services provided by E&Y other than those reported under "Audit Fees," "Audit-Related Fees" and "Tax Fees".

**Item 4(e)(1):**

Set forth below are the policies and procedures established by the Audit Committee of the Board of Trustees relating to the pre-approval of audit and non-audit related services:

To the extent required by applicable law, pre-approval by the Audit Committee of the Board is needed for all audit and permissible non-audit services rendered to the Fund and all permissible non-audit services rendered to MFS or MFS Related Entities if the services relate directly to the operations and financial reporting of the Registrant. Pre- approval is currently on an engagement-by-engagement basis. In the event pre-approval of such services is necessary between regular meetings of the Audit Committee and it is not practical to wait to seek pre-approval at the next regular meeting of the Audit Committee, pre-approval of such services may be referred to the Chair of the Audit Committee for approval; provided that the Chair may not pre-approve any individual engagement for such services exceeding $50,000 or multiple engagements for such services in the aggregate exceeding $100,000 between such regular meetings of the Audit Committee. Any engagement pre-approved by the Chair between regular meetings of the Audit Committee shall be presented for ratification by the entire Audit Committee at its next regularly scheduled meeting.

**Item 4(e)(2):**

None, or 0%, of the services relating to the Audit-Related Fees, Tax Fees and All Other Fees paid by the Fund and MFS and MFS Related Entities relating directly to the operations and financial reporting of the Registrant disclosed above were approved by the audit committee pursuant to paragraphs (c)(7)(i)(C) of Rule 2-01 of Regulation S-X (which permits audit committee approval after the start of the engagement with respect to services other than audit, review or attest services, if certain conditions are satisfied).

**Item 4(f):**

Not applicable.

**Item 4(h):**

The Registrant's Audit Committee has considered whether the provision by a Registrant's independent registered public accounting firm of non-audit services to MFS and MFS Related Entities that were not pre-approved by the Committee (because such services were provided prior to the effectiveness of SEC rules requiring pre-approval or because such services did not relate directly to the operations and financial reporting of the Registrant) was compatible with maintaining the independence of the independent registered public accounting firm as the Registrant's principal auditors.

**Item 4(i):**

Not applicable.

**Item 4(j):**

Not applicable.

------

#### &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; ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS.
Not applicable to the Registrant.

------

#### &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; ITEM 6. INVESTMENTS
A schedule of investments for each series covered by this Form N-CSR is included in the financial statements of such series under Item 7 of this Form N-CSR.

------

Massachusetts Investors Growth Stock Fund

**ITEM 7. FINANCIAL STATEMENTS AND FINANCIAL HIGHLIGHTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.**

Massachusetts Investors Growth Stock Fund

**Portfolio of Investments - 11/30/25** 

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by broad-based asset classes.

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – 99.1% | Common Stocks – 99.1% | Common Stocks – 99.1% |
| Apparel Manufacturers – 1.2% | Apparel Manufacturers – 1.2% |  |
| LVMH Moet Hennessy Louis Vuitton SE | 192289 | &nbsp;&nbsp; $141751605 |
| Broadcasting – 0.1% | Broadcasting – 0.1% |  |
| Walt Disney Co. | 68145 | &nbsp;&nbsp; $7119108 |
| Brokerage & Asset Managers – 2.7% | Brokerage & Asset Managers – 2.7% |  |
| Brookfield Asset Management Ltd. (l) | 1984723 | &nbsp;&nbsp; $104538357 |
| Charles Schwab Corp. | 1204783 | &nbsp;&nbsp; 111719528 |
| CME Group, Inc. | 305291 | &nbsp;&nbsp; 85927205 |
|  |  | &nbsp;&nbsp; $302185090 |
| Business Services – 6.7% | Business Services – 6.7% |  |
| Accenture PLC, "A" | 1420708 | &nbsp;&nbsp; $355177000 |
| TransUnion | 3398966 | &nbsp;&nbsp; 289082058 |
| Verisk Analytics, Inc., "A" | 523682 | &nbsp;&nbsp; 117865108 |
|  |  | &nbsp;&nbsp; $762124166 |
| Computer Software – 15.8% | Computer Software – 15.8% |  |
| Microsoft Corp. | 3219814 | &nbsp;&nbsp; $1584180686 |
| Salesforce, Inc. | 902902 | &nbsp;&nbsp; 208155027 |
|  |  | &nbsp;&nbsp; $1792335713 |
| Computer Software - Systems – 5.9% | Computer Software - Systems – 5.9% |  |
| Apple, Inc. | 2398677 | &nbsp;&nbsp; $668871081 |
| Construction – 2.6% | Construction – 2.6% |  |
| Otis Worldwide Corp. | 1201556 | &nbsp;&nbsp; $106758251 |
| Pool Corp. | 308126 | &nbsp;&nbsp; 75059494 |
| Sherwin-Williams Co. | 344711 | &nbsp;&nbsp; 118473723 |
|  |  | &nbsp;&nbsp; $300291468 |
| Consumer Products – 3.3% | Consumer Products – 3.3% |  |
| Church & Dwight Co., Inc. | 2376628 | &nbsp;&nbsp; $202393641 |
| L'Oréal S.A. | 392437 | &nbsp;&nbsp; 170983231 |
|  |  | &nbsp;&nbsp; $373376872 |
| Electrical Equipment – 10.4% | Electrical Equipment – 10.4% |  |
| Amphenol Corp., "A" | 2861248 | &nbsp;&nbsp; $403149843 |
| Eaton Corp. PLC | 675673 | &nbsp;&nbsp; 233708534 |
| Hubbell, Inc. | 574315 | &nbsp;&nbsp; 247776721 |
| Schneider Electric SE | 366790 | &nbsp;&nbsp; 98285048 |
| TE Connectivity PLC | 872176 | &nbsp;&nbsp; 197242602 |
|  |  | &nbsp;&nbsp; $1180162748 |
| Electronics – 13.4% | Electronics – 13.4% |  |
| Analog Devices, Inc. | 307065 | &nbsp;&nbsp; $81476627 |
| NVIDIA Corp. | 5813104 | &nbsp;&nbsp; 1028919408 |
| Taiwan Semiconductor Manufacturing Co. Ltd., ADR | 1305858 | &nbsp;&nbsp; 380670665 |

---

MIGFS-ANN

------

Massachusetts Investors Growth Stock Fund

*Portfolio of Investments – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued | Common Stocks – continued | Common Stocks – continued |
| Electronics – continued | Electronics – continued |  |
| Texas Instruments, Inc. | 145780 | &nbsp;&nbsp; $24530401 |
|  |  | &nbsp;&nbsp; $1515597101 |
| Food & Beverages – 0.5% | Food & Beverages – 0.5% |  |
| McCormick & Co., Inc. | 395084 | &nbsp;&nbsp; $26660268 |
| PepsiCo, Inc. | 186697 | &nbsp;&nbsp; 27769312 |
|  |  | &nbsp;&nbsp; $54429580 |
| Gaming & Lodging – 2.2% | Gaming & Lodging – 2.2% |  |
| Hilton Worldwide Holdings, Inc. | 873773 | &nbsp;&nbsp; $249051518 |
| Insurance – 3.0% | Insurance – 3.0% |  |
| Aon PLC | 866801 | &nbsp;&nbsp; $306778210 |
| Marsh & McLennan Cos., Inc. | 187999 | &nbsp;&nbsp; 34488417 |
|  |  | &nbsp;&nbsp; $341266627 |
| Interactive Media Services – 2.9% | Interactive Media Services – 2.9% |  |
| Alphabet, Inc., "A" | 1012097 | &nbsp;&nbsp; $324053217 |
| Leisure & Toys – 2.0% | Leisure & Toys – 2.0% |  |
| Tencent Holdings Ltd. | 2839100 | &nbsp;&nbsp; $222984106 |
| Machinery & Tools – 0.6% | Machinery & Tools – 0.6% |  |
| Graco, Inc. | 831271 | &nbsp;&nbsp; $68529981 |
| Medical & Health Technology & Services – 0.2% | Medical & Health Technology & Services – 0.2% |  |
| ICON PLC (a) | 37132 | &nbsp;&nbsp; $6869420 |
| Veeva Systems, Inc. (a) | 55330 | &nbsp;&nbsp; 13295246 |
|  |  | &nbsp;&nbsp; $20164666 |
| Medical Equipment – 11.3% | Medical Equipment – 11.3% |  |
| Agilent Technologies, Inc. | 1670714 | &nbsp;&nbsp; $256454599 |
| Becton, Dickinson and Co. | 932036 | &nbsp;&nbsp; 180833625 |
| Boston Scientific Corp. (a) | 1022557 | &nbsp;&nbsp; 103871340 |
| Danaher Corp. | 756471 | &nbsp;&nbsp; 171552493 |
| Mettler-Toledo International, Inc. (a) | 93412 | &nbsp;&nbsp; 137943369 |
| STERIS PLC | 970276 | &nbsp;&nbsp; 258365093 |
| Stryker Corp. | 119180 | &nbsp;&nbsp; 44237232 |
| Thermo Fisher Scientific, Inc. | 220768 | &nbsp;&nbsp; 130436358 |
|  |  | &nbsp;&nbsp; $1283694109 |
| Other Banks & Diversified Financials – 7.0% | Other Banks & Diversified Financials – 7.0% |  |
| Mastercard, Inc., "A" | 456119 | &nbsp;&nbsp; $251107193 |
| Moody's Corp. | 280933 | &nbsp;&nbsp; 137876298 |
| Visa, Inc., "A" | 1195015 | &nbsp;&nbsp; 399660816 |
|  |  | &nbsp;&nbsp; $788644307 |
| Restaurants – 0.4% | Restaurants – 0.4% |  |
| Starbucks Corp. | 500052 | &nbsp;&nbsp; $43559530 |

---

------

Massachusetts Investors Growth Stock Fund

*Portfolio of Investments – continued*

---

| | | |
|:---|:---|:---|
| **Issuer** | **Shares/Par** | **Value ($)** |
| Common Stocks – continued | Common Stocks – continued | Common Stocks – continued |
| Specialty Stores – 4.8% | Specialty Stores – 4.8% |  |
| Amazon.com, Inc. (a) | 1011563 | &nbsp;&nbsp; $235916723 |
| Ross Stores, Inc. | 998358 | &nbsp;&nbsp; 176070417 |
| TJX Cos., Inc. | 883649 | &nbsp;&nbsp; 134243956 |
|  |  | &nbsp;&nbsp; $546231096 |
| Telecom - Infrastructure – 0.1% | Telecom - Infrastructure – 0.1% |  |
| American Tower Corp., REIT | 63936 | &nbsp;&nbsp; $11589679 |
| Utilities - Electric Power – 2.0% | Utilities - Electric Power – 2.0% |  |
| CMS Energy Corp. | 3080350 | &nbsp;&nbsp; $232381604 |
| **Total Common Stocks (Identified Cost, $5,123,916,408)** |  | &nbsp;&nbsp; **$11230394972** |
| Mutual Funds (h) – 0.8% | Mutual Funds (h) – 0.8% | Mutual Funds (h) – 0.8% |
| Money Market Funds – 0.8% | Money Market Funds – 0.8% |  |
| MFS Institutional Money Market Portfolio, 4.01% (v) (Identified Cost, $87,625,104) | 87607583 | &nbsp;&nbsp; $87625105 |
| Collateral for Securities Loaned – 0.9% | Collateral for Securities Loaned – 0.9% | Collateral for Securities Loaned – 0.9% |
| JPMorgan U.S. Government Money Market Fund - Class IM Shares, 3.93% (j) (Identified Cost, $100,751,739) | 100751739 | &nbsp;&nbsp; $100751739 |
| Other Assets, Less Liabilities – (0.8)% |  | &nbsp;&nbsp; (88182595) |
| **Net Assets – 100.0%** | **Net Assets – 100.0%** | &nbsp;&nbsp; **$11330589221** |

---

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

&nbsp;&nbsp;&nbsp;&nbsp;(h) An affiliated issuer, which may be considered one in which the fund owns 5% or more
 of the outstanding voting securities, or a company which is under common control. At period end, the aggregate values of the fund's investments in affiliated
 issuers and in unaffiliated issuers were $87,625,105 and $11,331,146,711, respectively.

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

&nbsp;&nbsp;&nbsp;&nbsp;(l) A portion of this security is on loan. See Note 2 for additional information.

&nbsp;&nbsp;&nbsp;&nbsp;(v) Affiliated issuer that is available only to investment companies managed by MFS. The
 rate quoted for the MFS Institutional Money Market Portfolio is the annualized seven-day yield of the fund at period end.

The following abbreviations are used in this report and are defined: <br> ADR American Depositary Receipt <br> REIT Real Estate Investment Trust

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

**Financial Statements** \| **Statement of Assets and Liabilities**

This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund.

---

| | |
|:---|:---|
| **At 11/30/25** <br> **Assets**<br>|  |
| Investments in unaffiliated issuers, at value, including $96,613,875 of securities on loan (identified cost, $5,224,668,147) | &nbsp;&nbsp; $11331146711 |
| Investments in affiliated issuers, at value (identified cost, $87,625,104) | &nbsp;&nbsp; 87625105 |
| Foreign currency, at value (identified cost, $842) | &nbsp;&nbsp; 842 |
| Receivables for |  |
| Investments sold | &nbsp;&nbsp; 19213102 |
| Fund shares sold | &nbsp;&nbsp; 2957298 |
| Interest and dividends | &nbsp;&nbsp; 10207854 |
| Other assets | &nbsp;&nbsp; 34 |
| Total assets | &nbsp;&nbsp; $11451150946 |
| **Liabilities** |  |
| Payable to custodian | &nbsp;&nbsp; $1 |
| Payables for |  |
| Fund shares reacquired | &nbsp;&nbsp; 16559106 |
| Collateral for securities loaned, at value | &nbsp;&nbsp; 100751739 |
| Payable to affiliates |  |
| Investment adviser | &nbsp;&nbsp; 511076 |
| Administrative services fee | &nbsp;&nbsp; 7508 |
| Shareholder servicing costs | &nbsp;&nbsp; 2143130 |
| Distribution and service fees | &nbsp;&nbsp; 207210 |
| Payable for independent Trustees' compensation | &nbsp;&nbsp; 215 |
| Accrued expenses and other liabilities | &nbsp;&nbsp; 381740 |
| Total liabilities | &nbsp;&nbsp; $120561725 |
| Net assets | &nbsp;&nbsp; $11330589221 |
| **Net assets consist of** |  |
| Paid-in capital | &nbsp;&nbsp; $4076539301 |
| Total distributable earnings (loss) | &nbsp;&nbsp; 7254049920 |
| Net assets | &nbsp;&nbsp; $11330589221 |
| Shares of beneficial interest outstanding | &nbsp;&nbsp; 241756472 |

---

---

| | | | |
|:---|:---|:---|:---|
|  | **Net assets** | &nbsp;&nbsp; **Shares** <br>**outstanding**<br>| &nbsp;&nbsp; **Net asset value** <br>**per share (a)**<br>|
| Class A | &nbsp;&nbsp;&nbsp; $5070140640 | &nbsp;&nbsp;&nbsp; 110246579 | &nbsp;&nbsp;&nbsp; $45.99 |
| Class B | &nbsp;&nbsp;&nbsp; 5013631 | &nbsp;&nbsp;&nbsp; 145114 | &nbsp;&nbsp;&nbsp;&nbsp;34.55 |
| Class C | &nbsp;&nbsp;&nbsp; 47794432 | &nbsp;&nbsp;&nbsp; 1399731 | &nbsp;&nbsp;&nbsp;&nbsp;34.15 |
| Class I | &nbsp;&nbsp;&nbsp; 1859777731 | &nbsp;&nbsp;&nbsp; 38533884 | &nbsp;&nbsp;&nbsp;&nbsp;48.26 |
| Class R1 | &nbsp;&nbsp;&nbsp; 8273255 | &nbsp;&nbsp;&nbsp; 248475 | &nbsp;&nbsp;&nbsp;&nbsp;33.30 |
| Class R2 | &nbsp;&nbsp;&nbsp; 49521365 | &nbsp;&nbsp;&nbsp; 1130062 | &nbsp;&nbsp;&nbsp;&nbsp;43.82 |
| Class R3 | &nbsp;&nbsp;&nbsp; 768206236 | &nbsp;&nbsp;&nbsp; 16995484 | &nbsp;&nbsp;&nbsp;&nbsp;45.20 |
| Class R4 | &nbsp;&nbsp;&nbsp; 383751229 | &nbsp;&nbsp;&nbsp; 8227439 | &nbsp;&nbsp;&nbsp;&nbsp;46.64 |
| Class R6 | &nbsp;&nbsp;&nbsp; 3138110702 | &nbsp;&nbsp;&nbsp; 64829704 | &nbsp;&nbsp;&nbsp;&nbsp;48.41 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(a) Maximum offering price per share was equal to the net asset value per share for all
 share classes, except for Class A, for which the maximum offering price per share was $48.80 [100 / 94.25 x $45.99]. On sales of $50,000 or
 more, the maximum offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class
 A, Class B, and Class C shares. Redemption price per share was equal to the net asset value per share for Classes I, R1, R2, R3, R4, and
 R6.

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

**Financial Statements** \| **Statement of Operations**

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

---

| | |
|:---|:---|
| **Year ended 11/30/25** <br> **Net investment income (loss)**<br>|  |
| Income |  |
| Dividends from unaffiliated issuers | &nbsp;&nbsp; $125459056 |
| Dividends from affiliated issuers | &nbsp;&nbsp; 2912867 |
| Income on securities loaned | &nbsp;&nbsp; 34603 |
| Other | &nbsp;&nbsp; 4619 |
| Interest | &nbsp;&nbsp; 109 |
| Foreign taxes withheld | &nbsp;&nbsp; (1415123)<br>|
| Total investment income | &nbsp;&nbsp; $126996131 |
| Expenses |  |
| Management fee | &nbsp;&nbsp; $39625852 |
| Distribution and service fees | &nbsp;&nbsp; 15321063 |
| Shareholder servicing costs | &nbsp;&nbsp; 9723359 |
| Administrative services fee | &nbsp;&nbsp; 563992 |
| Independent Trustees' compensation | &nbsp;&nbsp; 154380 |
| Custodian fee | &nbsp;&nbsp; 432894 |
| Shareholder communications | &nbsp;&nbsp; 376438 |
| Audit and tax fees | &nbsp;&nbsp; 84258 |
| Legal fees | &nbsp;&nbsp; 61681 |
| Miscellaneous | &nbsp;&nbsp; 357045 |
| Total expenses | &nbsp;&nbsp; $66700962 |
| Fees paid indirectly | &nbsp;&nbsp; (176)<br>|
| Reduction of expenses by distributor | &nbsp;&nbsp; (48200)<br>|
| Net expenses | &nbsp;&nbsp; $66652586 |
| Net investment income (loss) | &nbsp;&nbsp; $60343545 |
| **Realized and unrealized gain (loss)** | **Realized and unrealized gain (loss)** |
| Realized gain (loss) (identified cost basis) |  |
| Unaffiliated issuers | &nbsp;&nbsp; $1293757119 |
| Affiliated issuers | &nbsp;&nbsp; 1183 |
| Foreign currency | &nbsp;&nbsp; (242035)<br>|
| Net realized gain (loss) | &nbsp;&nbsp; $1293516267 |
| Change in unrealized appreciation or depreciation |  |
| Unaffiliated issuers | &nbsp;&nbsp; $(538031629)<br>|
| Affiliated issuers | &nbsp;&nbsp; (2681)<br>|
| Translation of assets and liabilities in foreign currencies | &nbsp;&nbsp; 85132 |
| Net unrealized gain (loss) | &nbsp;&nbsp; $(537949178)<br>|
| Net realized and unrealized gain (loss) | &nbsp;&nbsp; $755567089 |
| Change in net assets from operations | &nbsp;&nbsp; $815910634 |

---

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

**Financial Statements** \| **Statements of Changes in Net Assets**

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

---

| | | |
|:---|:---|:---|
|  | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** |
| **Change in net assets** |  |  |
| **From operations** |  |  |
| Net investment income (loss) | $60343545 | &nbsp;&nbsp; $56645282 |
| Net realized gain (loss) | 1293516267 | &nbsp;&nbsp; 1116917606 |
| Net unrealized gain (loss) | (537949178)<br>| &nbsp;&nbsp; 1444074429 |
| Change in net assets from operations | $815910634 | &nbsp;&nbsp; $2617637317 |
| Total distributions to shareholders | $(1087424507)<br>| &nbsp;&nbsp; $(486396695)<br>|
| Change in net assets from fund share transactions | $(1490864894)<br>| &nbsp;&nbsp; $(844776464)<br>|
| Total change in net assets | $(1762378767)<br>| &nbsp;&nbsp; $1286464158 |
| **Net assets** |  |  |
| At beginning of period | 13092967988 | &nbsp;&nbsp; 11806503830 |
| At end of period | $11330589221 | &nbsp;&nbsp; $13092967988 |

---

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

**Financial Statements** \| **Financial Highlights**

The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period.

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class A** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $46.86 | &nbsp;&nbsp; $39.62 | &nbsp;&nbsp; $36.07 | &nbsp;&nbsp; $43.82 | &nbsp;&nbsp; $38.83 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.15 | &nbsp;&nbsp; $0.13 | &nbsp;&nbsp; $0.15 | &nbsp;&nbsp; $0.12 | &nbsp;&nbsp; $0.09 |
| Net realized and unrealized gain (loss) | 2.92 | &nbsp;&nbsp;&nbsp;&nbsp;8.74 | &nbsp;&nbsp;&nbsp;&nbsp;4.82 | &nbsp;&nbsp; (4.04)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.38 |
| Total from investment operations | $3.07 | &nbsp;&nbsp; $8.87 | &nbsp;&nbsp; $4.97 | &nbsp;&nbsp; $(3.92)<br>| &nbsp;&nbsp; $8.47 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.10)<br>| &nbsp;&nbsp; $(0.16)<br>| &nbsp;&nbsp; $(0.14)<br>| &nbsp;&nbsp; $(0.08)<br>| &nbsp;&nbsp; $(0.06)<br>|
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(3.94)<br>| &nbsp;&nbsp; $(1.63)<br>| &nbsp;&nbsp; $(1.42)<br>| &nbsp;&nbsp; $(3.83)<br>| &nbsp;&nbsp; $(3.48)<br>|
| Net asset value, end of period (x) | $45.99 | &nbsp;&nbsp; $46.86 | &nbsp;&nbsp; $39.62 | &nbsp;&nbsp; $36.07 | &nbsp;&nbsp; $43.82 |
| Total return (%) (r)(s)(t)(x) | 7.31 | &nbsp;&nbsp;&nbsp;&nbsp;23.19 | &nbsp;&nbsp;&nbsp;&nbsp;14.38 | &nbsp;&nbsp; (10.03)<br>| &nbsp;&nbsp;&nbsp;&nbsp;23.43 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 0.71 | &nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;0.70 |
| Expenses after expense reductions (f) | 0.70 | &nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;0.70 |
| Net investment income (loss) | 0.35 | &nbsp;&nbsp;&nbsp;&nbsp;0.30 | &nbsp;&nbsp;&nbsp;&nbsp;0.42 | &nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;0.21 |
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $5070141 | &nbsp;&nbsp; $5291496 | &nbsp;&nbsp; $4680572 | &nbsp;&nbsp; $4348372 | &nbsp;&nbsp; $5146629 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class B** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $36.34 | &nbsp;&nbsp; $31.15 | &nbsp;&nbsp; $28.72 | &nbsp;&nbsp; $35.82 | &nbsp;&nbsp; $32.52 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $(0.13)<br>| &nbsp;&nbsp; $(0.15)<br>| &nbsp;&nbsp; $(0.09)<br>| &nbsp;&nbsp; $(0.13)<br>| &nbsp;&nbsp; $(0.18)<br>|
| Net realized and unrealized gain (loss) | 2.18 | &nbsp;&nbsp;&nbsp;&nbsp;6.81 | &nbsp;&nbsp;&nbsp;&nbsp;3.80 | &nbsp;&nbsp; (3.22)<br>| &nbsp;&nbsp;&nbsp;&nbsp;6.90 |
| Total from investment operations | $2.05 | &nbsp;&nbsp; $6.66 | &nbsp;&nbsp; $3.71 | &nbsp;&nbsp; $(3.35)<br>| &nbsp;&nbsp; $6.72 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $— | $— | $— | $— |
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(3.84)<br>| &nbsp;&nbsp; $(1.47)<br>| &nbsp;&nbsp; $(1.28)<br>| &nbsp;&nbsp; $(3.75)<br>| &nbsp;&nbsp; $(3.42)<br>|
| Net asset value, end of period (x) | $34.55 | &nbsp;&nbsp; $36.34 | &nbsp;&nbsp; $31.15 | &nbsp;&nbsp; $28.72 | &nbsp;&nbsp; $35.82 |
| Total return (%) (r)(s)(t)(x) | 6.52 | &nbsp;&nbsp;&nbsp;&nbsp;22.25 | &nbsp;&nbsp;&nbsp;&nbsp;13.54 | &nbsp;&nbsp; (10.71)<br>| &nbsp;&nbsp;&nbsp;&nbsp;22.48 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 |
| Expenses after expense reductions (f) | 1.45 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 |
| Net investment income (loss) | (0.40)<br>| &nbsp;&nbsp; (0.45)<br>| &nbsp;&nbsp; (0.33)<br>| &nbsp;&nbsp; (0.44)<br>| &nbsp;&nbsp; (0.54)<br>|
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $5014 | &nbsp;&nbsp; $9976 | &nbsp;&nbsp; $14849 | &nbsp;&nbsp; $19508 | &nbsp;&nbsp; $30943 |

---

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

*Financial Highlights - continued*

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class C** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $35.97 | &nbsp;&nbsp; $30.84 | &nbsp;&nbsp; $28.45 | &nbsp;&nbsp; $35.52 | &nbsp;&nbsp; $32.27 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $(0.13)<br>| &nbsp;&nbsp; $(0.15)<br>| &nbsp;&nbsp; $(0.09)<br>| &nbsp;&nbsp; $(0.13)<br>| &nbsp;&nbsp; $(0.18)<br>|
| Net realized and unrealized gain (loss) | 2.15 | &nbsp;&nbsp;&nbsp;&nbsp;6.75 | &nbsp;&nbsp;&nbsp;&nbsp;3.76 | &nbsp;&nbsp; (3.19)<br>| &nbsp;&nbsp;&nbsp;&nbsp;6.85 |
| Total from investment operations | $2.02 | &nbsp;&nbsp; $6.60 | &nbsp;&nbsp; $3.67 | &nbsp;&nbsp; $(3.32)<br>| &nbsp;&nbsp; $6.67 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $— | $— | $— | $— |
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(3.84)<br>| &nbsp;&nbsp; $(1.47)<br>| &nbsp;&nbsp; $(1.28)<br>| &nbsp;&nbsp; $(3.75)<br>| &nbsp;&nbsp; $(3.42)<br>|
| Net asset value, end of period (x) | $34.15 | &nbsp;&nbsp; $35.97 | &nbsp;&nbsp; $30.84 | &nbsp;&nbsp; $28.45 | &nbsp;&nbsp; $35.52 |
| Total return (%) (r)(s)(t)(x) | 6.51 | &nbsp;&nbsp;&nbsp;&nbsp;22.29 | &nbsp;&nbsp;&nbsp;&nbsp;13.53 | &nbsp;&nbsp; (10.71)<br>| &nbsp;&nbsp;&nbsp;&nbsp;22.50 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 |
| Expenses after expense reductions (f) | 1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;1.47 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 |
| Net investment income (loss) | (0.40)<br>| &nbsp;&nbsp; (0.45)<br>| &nbsp;&nbsp; (0.33)<br>| &nbsp;&nbsp; (0.44)<br>| &nbsp;&nbsp; (0.54)<br>|
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $47794 | &nbsp;&nbsp; $56275 | &nbsp;&nbsp; $53149 | &nbsp;&nbsp; $53969 | &nbsp;&nbsp; $72795 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class I** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $48.97 | &nbsp;&nbsp; $41.33 | &nbsp;&nbsp; $37.57 | &nbsp;&nbsp; $45.48 | &nbsp;&nbsp; $40.17 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.27 | &nbsp;&nbsp; $0.24 | &nbsp;&nbsp; $0.25 | &nbsp;&nbsp; $0.22 | &nbsp;&nbsp; $0.19 |
| Net realized and unrealized gain (loss) | 3.06 | &nbsp;&nbsp;&nbsp;&nbsp;9.13 | &nbsp;&nbsp;&nbsp;&nbsp;5.03 | &nbsp;&nbsp; (4.21)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.69 |
| Total from investment operations | $3.33 | &nbsp;&nbsp; $9.37 | &nbsp;&nbsp; $5.28 | &nbsp;&nbsp; $(3.99)<br>| &nbsp;&nbsp; $8.88 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.20)<br>| &nbsp;&nbsp; $(0.26)<br>| &nbsp;&nbsp; $(0.24)<br>| &nbsp;&nbsp; $(0.17)<br>| &nbsp;&nbsp; $(0.15)<br>|
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(4.04)<br>| &nbsp;&nbsp; $(1.73)<br>| &nbsp;&nbsp; $(1.52)<br>| &nbsp;&nbsp; $(3.92)<br>| &nbsp;&nbsp; $(3.57)<br>|
| Net asset value, end of period (x) | $48.26 | &nbsp;&nbsp; $48.97 | &nbsp;&nbsp; $41.33 | &nbsp;&nbsp; $37.57 | &nbsp;&nbsp; $45.48 |
| Total return (%) (r)(s)(t)(x) | 7.57 | &nbsp;&nbsp;&nbsp;&nbsp;23.49 | &nbsp;&nbsp;&nbsp;&nbsp;14.66 | &nbsp;&nbsp; (9.81)<br>| &nbsp;&nbsp;&nbsp;&nbsp;23.75 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 0.46 | &nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;0.45 |
| Expenses after expense reductions (f) | N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A |
| Net investment income (loss) | 0.60 | &nbsp;&nbsp;&nbsp;&nbsp;0.55 | &nbsp;&nbsp;&nbsp;&nbsp;0.66 | &nbsp;&nbsp;&nbsp;&nbsp;0.57 | &nbsp;&nbsp;&nbsp;&nbsp;0.46 |
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $1859778 | &nbsp;&nbsp; $2058691 | &nbsp;&nbsp; $1819214 | &nbsp;&nbsp; $1392387 | &nbsp;&nbsp; $1295848 |

---

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

*Financial Highlights - continued*

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R1** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $35.17 | &nbsp;&nbsp; $30.19 | &nbsp;&nbsp; $27.88 | &nbsp;&nbsp; $34.88 | &nbsp;&nbsp; $31.74 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $(0.13)<br>| &nbsp;&nbsp; $(0.15)<br>| &nbsp;&nbsp; $(0.09)<br>| &nbsp;&nbsp; $(0.13)<br>| &nbsp;&nbsp; $(0.18)<br>|
| Net realized and unrealized gain (loss) | 2.10 | &nbsp;&nbsp;&nbsp;&nbsp;6.60 | &nbsp;&nbsp;&nbsp;&nbsp;3.68 | &nbsp;&nbsp; (3.12)<br>| &nbsp;&nbsp;&nbsp;&nbsp;6.74 |
| Total from investment operations | $1.97 | &nbsp;&nbsp; $6.45 | &nbsp;&nbsp; $3.59 | &nbsp;&nbsp; $(3.25)<br>| &nbsp;&nbsp; $6.56 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | $— | $— | $— | $— |
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(3.84)<br>| &nbsp;&nbsp; $(1.47)<br>| &nbsp;&nbsp; $(1.28)<br>| &nbsp;&nbsp; $(3.75)<br>| &nbsp;&nbsp; $(3.42)<br>|
| Net asset value, end of period (x) | $33.30 | &nbsp;&nbsp; $35.17 | &nbsp;&nbsp; $30.19 | &nbsp;&nbsp; $27.88 | &nbsp;&nbsp; $34.88 |
| Total return (%) (r)(s)(t)(x) | 6.51 | &nbsp;&nbsp;&nbsp;&nbsp;22.27 | &nbsp;&nbsp;&nbsp;&nbsp;13.52 | &nbsp;&nbsp; (10.71)<br>| &nbsp;&nbsp;&nbsp;&nbsp;22.53 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.46 | &nbsp;&nbsp;&nbsp;&nbsp;1.45 |
| Expenses after expense reductions (f) | N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp;&nbsp;&nbsp;1.45 |
| Net investment income (loss) | (0.40)<br>| &nbsp;&nbsp; (0.45)<br>| &nbsp;&nbsp; (0.34)<br>| &nbsp;&nbsp; (0.44)<br>| &nbsp;&nbsp; (0.54)<br>|
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $8273 | &nbsp;&nbsp; $9559 | &nbsp;&nbsp; $9794 | &nbsp;&nbsp; $26186 | &nbsp;&nbsp; $34847 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R2** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $44.84 | &nbsp;&nbsp; $37.94 | &nbsp;&nbsp; $34.60 | &nbsp;&nbsp; $42.21 | &nbsp;&nbsp; $37.56 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.04 | &nbsp;&nbsp; $0.02 | &nbsp;&nbsp; $0.06 | &nbsp;&nbsp; $0.02 | &nbsp;&nbsp; $(0.02)<br>|
| Net realized and unrealized gain (loss) | 2.78 | &nbsp;&nbsp;&nbsp;&nbsp;8.37 | &nbsp;&nbsp;&nbsp;&nbsp;4.62 | &nbsp;&nbsp; (3.88)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.09 |
| Total from investment operations | $2.82 | &nbsp;&nbsp; $8.39 | &nbsp;&nbsp; $4.68 | &nbsp;&nbsp; $(3.86)<br>| &nbsp;&nbsp; $8.07 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $— | &nbsp;&nbsp; $(0.02)<br>| &nbsp;&nbsp; $(0.06)<br>| $— | $— |
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(3.84)<br>| &nbsp;&nbsp; $(1.49)<br>| &nbsp;&nbsp; $(1.34)<br>| &nbsp;&nbsp; $(3.75)<br>| &nbsp;&nbsp; $(3.42)<br>|
| Net asset value, end of period (x) | $43.82 | &nbsp;&nbsp; $44.84 | &nbsp;&nbsp; $37.94 | &nbsp;&nbsp; $34.60 | &nbsp;&nbsp; $42.21 |
| Total return (%) (r)(s)(t)(x) | 7.04 | &nbsp;&nbsp;&nbsp;&nbsp;22.87 | &nbsp;&nbsp;&nbsp;&nbsp;14.10 | &nbsp;&nbsp; (10.26)<br>| &nbsp;&nbsp;&nbsp;&nbsp;23.11 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 0.96 | &nbsp;&nbsp;&nbsp;&nbsp;0.95 | &nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;0.96 | &nbsp;&nbsp;&nbsp;&nbsp;0.95 |
| Expenses after expense reductions (f) | N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A |
| Net investment income (loss) | 0.11 | &nbsp;&nbsp;&nbsp;&nbsp;0.05 | &nbsp;&nbsp;&nbsp;&nbsp;0.17 | &nbsp;&nbsp;&nbsp;&nbsp;0.06 | &nbsp;&nbsp; (0.04)<br>|
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $49521 | &nbsp;&nbsp; $68429 | &nbsp;&nbsp; $69208 | &nbsp;&nbsp; $86456 | &nbsp;&nbsp; $99936 |

---

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

*Financial Highlights - continued*

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R3** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $46.13 | &nbsp;&nbsp; $39.01 | &nbsp;&nbsp; $35.53 | &nbsp;&nbsp; $43.23 | &nbsp;&nbsp; $38.35 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.15 | &nbsp;&nbsp; $0.13 | &nbsp;&nbsp; $0.15 | &nbsp;&nbsp; $0.12 | &nbsp;&nbsp; $0.08 |
| Net realized and unrealized gain (loss) | 2.86 | &nbsp;&nbsp;&nbsp;&nbsp;8.61 | &nbsp;&nbsp;&nbsp;&nbsp;4.75 | &nbsp;&nbsp; (3.99)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.27 |
| Total from investment operations | $3.01 | &nbsp;&nbsp; $8.74 | &nbsp;&nbsp; $4.90 | &nbsp;&nbsp; $(3.87)<br>| &nbsp;&nbsp; $8.35 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.10)<br>| &nbsp;&nbsp; $(0.15)<br>| &nbsp;&nbsp; $(0.14)<br>| &nbsp;&nbsp; $(0.08)<br>| &nbsp;&nbsp; $(0.05)<br>|
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(3.94)<br>| &nbsp;&nbsp; $(1.62)<br>| &nbsp;&nbsp; $(1.42)<br>| &nbsp;&nbsp; $(3.83)<br>| &nbsp;&nbsp; $(3.47)<br>|
| Net asset value, end of period (x) | $45.20 | &nbsp;&nbsp; $46.13 | &nbsp;&nbsp; $39.01 | &nbsp;&nbsp; $35.53 | &nbsp;&nbsp; $43.23 |
| Total return (%) (r)(s)(t)(x) | 7.30 | &nbsp;&nbsp;&nbsp;&nbsp;23.19 | &nbsp;&nbsp;&nbsp;&nbsp;14.40 | &nbsp;&nbsp; (10.05)<br>| &nbsp;&nbsp;&nbsp;&nbsp;23.43 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 0.71 | &nbsp;&nbsp;&nbsp;&nbsp;0.70 | &nbsp;&nbsp;&nbsp;&nbsp;0.72 | &nbsp;&nbsp;&nbsp;&nbsp;0.71 | &nbsp;&nbsp;&nbsp;&nbsp;0.70 |
| Expenses after expense reductions (f) | N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A |
| Net investment income (loss) | 0.35 | &nbsp;&nbsp;&nbsp;&nbsp;0.30 | &nbsp;&nbsp;&nbsp;&nbsp;0.41 | &nbsp;&nbsp;&nbsp;&nbsp;0.32 | &nbsp;&nbsp;&nbsp;&nbsp;0.21 |
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $768206 | &nbsp;&nbsp; $803037 | &nbsp;&nbsp; $894105 | &nbsp;&nbsp; $767181 | &nbsp;&nbsp; $666801 |

---

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R4** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $47.46 | &nbsp;&nbsp; $40.11 | &nbsp;&nbsp; $36.50 | &nbsp;&nbsp; $44.29 | &nbsp;&nbsp; $39.21 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.26 | &nbsp;&nbsp; $0.24 | &nbsp;&nbsp; $0.24 | &nbsp;&nbsp; $0.21 | &nbsp;&nbsp; $0.19 |
| Net realized and unrealized gain (loss) | 2.96 | &nbsp;&nbsp;&nbsp;&nbsp;8.84 | &nbsp;&nbsp;&nbsp;&nbsp;4.89 | &nbsp;&nbsp; (4.08)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.46 |
| Total from investment operations | $3.22 | &nbsp;&nbsp; $9.08 | &nbsp;&nbsp; $5.13 | &nbsp;&nbsp; $(3.87)<br>| &nbsp;&nbsp; $8.65 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.20)<br>| &nbsp;&nbsp; $(0.26)<br>| &nbsp;&nbsp; $(0.24)<br>| &nbsp;&nbsp; $(0.17)<br>| &nbsp;&nbsp; $(0.15)<br>|
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(4.04)<br>| &nbsp;&nbsp; $(1.73)<br>| &nbsp;&nbsp; $(1.52)<br>| &nbsp;&nbsp; $(3.92)<br>| &nbsp;&nbsp; $(3.57)<br>|
| Net asset value, end of period (x) | $46.64 | &nbsp;&nbsp; $47.46 | &nbsp;&nbsp; $40.11 | &nbsp;&nbsp; $36.50 | &nbsp;&nbsp; $44.29 |
| Total return (%) (r)(s)(t)(x) | 7.58 | &nbsp;&nbsp;&nbsp;&nbsp;23.48 | &nbsp;&nbsp;&nbsp;&nbsp;14.67 | &nbsp;&nbsp; (9.81)<br>| &nbsp;&nbsp;&nbsp;&nbsp;23.73 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 0.46 | &nbsp;&nbsp;&nbsp;&nbsp;0.45 | &nbsp;&nbsp;&nbsp;&nbsp;0.47 | &nbsp;&nbsp;&nbsp;&nbsp;0.46 | &nbsp;&nbsp;&nbsp;&nbsp;0.45 |
| Expenses after expense reductions (f) | N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A |
| Net investment income (loss) | 0.60 | &nbsp;&nbsp;&nbsp;&nbsp;0.55 | &nbsp;&nbsp;&nbsp;&nbsp;0.67 | &nbsp;&nbsp;&nbsp;&nbsp;0.56 | &nbsp;&nbsp;&nbsp;&nbsp;0.46 |
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $383751 | &nbsp;&nbsp; $598589 | &nbsp;&nbsp; $623207 | &nbsp;&nbsp; $542762 | &nbsp;&nbsp; $926069 |

---

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

*Financial Highlights - continued*

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
| **Class R6** | **Year ended** | **Year ended** | **Year ended** | **Year ended** | **Year ended** |
|  | **11/30/25** | **11/30/24** | **11/30/23** | **11/30/22** | **11/30/21** |
| Net asset value, beginning of period | $49.10 | &nbsp;&nbsp; $41.43 | &nbsp;&nbsp; $37.66 | &nbsp;&nbsp; $45.57 | &nbsp;&nbsp; $40.24 |
| **Income (loss) from investment operations** |  |  |  |  |  |
| Net investment income (loss) (d) | $0.31 | &nbsp;&nbsp; $0.28 | &nbsp;&nbsp; $0.29 | &nbsp;&nbsp; $0.25 | &nbsp;&nbsp; $0.23 |
| Net realized and unrealized gain (loss) | 3.08 | &nbsp;&nbsp;&nbsp;&nbsp;9.15 | &nbsp;&nbsp;&nbsp;&nbsp;5.03 | &nbsp;&nbsp; (4.20)<br>| &nbsp;&nbsp;&nbsp;&nbsp;8.70 |
| Total from investment operations | $3.39 | &nbsp;&nbsp; $9.43 | &nbsp;&nbsp; $5.32 | &nbsp;&nbsp; $(3.95)<br>| &nbsp;&nbsp; $8.93 |
| **Less distributions declared to shareholders** |  |  |  |  |  |
| From net investment income | $(0.24)<br>| &nbsp;&nbsp; $(0.29)<br>| &nbsp;&nbsp; $(0.27)<br>| &nbsp;&nbsp; $(0.21)<br>| &nbsp;&nbsp; $(0.18)<br>|
| From net realized gain | (3.84)<br>| &nbsp;&nbsp; (1.47)<br>| &nbsp;&nbsp; (1.28)<br>| &nbsp;&nbsp; (3.75)<br>| &nbsp;&nbsp; (3.42)<br>|
| Total distributions declared to shareholders | $(4.08)<br>| &nbsp;&nbsp; $(1.76)<br>| &nbsp;&nbsp; $(1.55)<br>| &nbsp;&nbsp; $(3.96)<br>| &nbsp;&nbsp; $(3.60)<br>|
| Net asset value, end of period (x) | $48.41 | &nbsp;&nbsp; $49.10 | &nbsp;&nbsp; $41.43 | &nbsp;&nbsp; $37.66 | &nbsp;&nbsp; $45.57 |
| Total return (%) (r)(s)(t)(x) | 7.69 | &nbsp;&nbsp;&nbsp;&nbsp;23.61 | &nbsp;&nbsp;&nbsp;&nbsp;14.75 | &nbsp;&nbsp; (9.72)<br>| &nbsp;&nbsp;&nbsp;&nbsp;23.85 |
| **Ratios (%) (to average net assets)** <br>**and Supplemental data:**<br>|  |  |  |  |  |
| Expenses before expense reductions (f) | 0.37 | &nbsp;&nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;0.37 | &nbsp;&nbsp;&nbsp;&nbsp;0.36 |
| Expenses after expense reductions (f) | N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A | &nbsp;&nbsp; N/A |
| Net investment income (loss) | 0.69 | &nbsp;&nbsp;&nbsp;&nbsp;0.63 | &nbsp;&nbsp;&nbsp;&nbsp;0.76 | &nbsp;&nbsp;&nbsp;&nbsp;0.66 | &nbsp;&nbsp;&nbsp;&nbsp;0.55 |
| Portfolio turnover rate | 21 | &nbsp;&nbsp; 19 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 20 | &nbsp;&nbsp; 17 |
| Net assets at end of period (000 omitted) | $3138111 | &nbsp;&nbsp; $4196916 | &nbsp;&nbsp; $3642406 | &nbsp;&nbsp; $2759785 | &nbsp;&nbsp; $2902199 |

---

&nbsp;&nbsp;&nbsp;&nbsp;(d) Per share data is based on average shares outstanding.

&nbsp;&nbsp;&nbsp;&nbsp;(f) Ratios do not reflect reductions from fees paid indirectly, if applicable. See Note
 2 in the Notes to Financial Statements for additional information.

&nbsp;&nbsp;&nbsp;&nbsp;(r) Certain expenses have been reduced without which performance would have been lower.

&nbsp;&nbsp;&nbsp;&nbsp;(s) From time to time the fund may receive proceeds from litigation settlements, without
 which performance would be lower.

&nbsp;&nbsp;&nbsp;&nbsp;(t) Total returns do not include any applicable sales charges.

&nbsp;&nbsp;&nbsp;&nbsp;(x) The net asset values and total returns have been calculated on net assets which include
 adjustments made in accordance with U.S. generally accepted accounting principles required at period end for financial reporting purposes.

**See Notes to Financial Statements**

------

Massachusetts Investors Growth Stock Fund

**Notes to Financial Statements**

**(1) Business and Organization**

Massachusetts Investors Growth Stock Fund (the fund) is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as a diversified open-end management investment company.

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.

**(2) Significant Accounting Policies**

**General** — The preparation of financial statements in conformity with U.S. generally accepted accounting principles 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 increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of the fund's Statement of Assets and Liabilities through the date that the financial statements were issued.

**Operating Segments** — In this reporting period, the fund adopted FASB Accounting Standards Update 2023-07, Segment Reporting (Topic 280) - Improvements to Reportable Segment Disclosures ("ASU 2023-07"). Adoption of the new standard impacted financial statement disclosures only and did not affect the fund's financial position or the results of its operations. An operating segment is a component of a public entity that engages in business activities from which it may recognize revenues and incur expenses, has operating results that are regularly reviewed by the entity's chief operating decision maker (CODM) in making resource allocation decisions and assessing segment performance, and for which discrete financial information is available. The fund represents a single operating segment and the Chairman's Committee of the fund's adviser acts as the segment's CODM. The fund's total returns, expense ratios, and changes in net assets which are used by the CODM to assess segment performance and to make resource allocation decisions to the segment are consistent with that presented within the fund's financial statements.

**Balance Sheet Offsetting** — The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund's Significant Accounting Policies note under the captions for each of the fund's in-scope financial instruments and transactions.

**Investment Valuations** — Subject to its oversight, the fund's Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the fund's investments to MFS as the fund's adviser, pursuant to the fund's valuation policy and procedures which have been adopted by the adviser and approved by the Board. In accordance with Rule 2a-5 under the Investment Company Act of 1940, the Board of Trustees designated the adviser as the "valuation designee" of the fund. If the adviser, as valuation designee, determines that reliable market quotations are not readily available for an investment, the investment is valued at fair value as determined in good faith by the adviser in accordance with the adviser's fair valuation policy and procedures.

Under the fund's valuation policy and procedures, equity securities, including restricted equity securities, are generally valued at the last sale or official closing price on their primary market or exchange as provided by a third-party pricing service. Equity securities, for which there were no sales reported that day, are generally valued at the last quoted daily bid quotation on their primary market or exchange as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Open-end investment companies are generally valued at net asset value per share. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates provided by a third-party pricing service.

Under the fund's valuation policy and procedures, market quotations are not considered to be readily available for debt instruments, floating rate loans, and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services or otherwise determined by the adviser in accordance with the adviser's fair valuation policy and procedures. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation. In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, spreads and other market data. An investment may also be valued at fair value if the adviser determines that the investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or

------

Massachusetts Investors Growth Stock Fund

*Notes to Financial Statements - continued* 

market) and prior to the determination of the fund's net asset value, or after the halt of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of the fund's net asset value may be deemed to have a material effect on the value of securities traded in foreign markets. Accordingly, the fund's foreign equity securities may often be valued at fair value. The adviser generally relies on third-party pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating the fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes significant unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of November 30, 2025 in valuing the fund's assets and liabilities:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Financial Instruments** | **Level 1** | **Level 2** | **Level 3** | **Total** |
| Equity Securities | $11230394972 | $— | $— | $11230394972 |
| Investment Companies | 188376844 |  |  | 188376844 |
| Total | $11418771816 | $— | $— | $11418771816 |

---

For further information regarding security characteristics, see the Portfolio of Investments.

**Foreign Currency Translation** — Purchases and sales of foreign investments, income, and expenses are converted into U.S. dollars based upon currency exchange rates prevailing on the respective dates of such transactions or on the reporting date for foreign denominated receivables and payables. Gains and losses attributable to foreign currency exchange rates on sales of securities are recorded for financial statement purposes as net realized gains and losses on investments. Gains and losses attributable to foreign exchange rate movements on receivables, payables, income and expenses are recorded for financial statement purposes as foreign currency transaction gains and losses. That portion of both realized and unrealized gains and losses on investments that results from fluctuations in foreign currency exchange rates is not separately disclosed.

**Security Loans** — Under its Securities Lending Agency Agreement with the fund, JPMorgan Chase and Co., as lending agent, loans the securities of the fund to certain qualified institutions (the "Borrowers") approved by the fund. Security loans can be terminated at the discretion of either the lending agent or the fund and the related securities must be returned within the earlier of the standard trade settlement period for such securities or within three business days. The loans are collateralized by cash and/or U.S. Treasury and federal agency obligations in an amount typically at least equal to the market value of the securities loaned. On loans collateralized by cash, the cash collateral is invested in a money market fund. The market value of the loaned securities is determined at the close of business of the fund and any additional required collateral is delivered to the fund on the next business day. The lending agent provides the fund with indemnification against Borrower default. In the event of Borrower default, the lending agent will, for the benefit of the fund, either purchase securities identical to those loaned or, when such purchase is commercially impracticable, pay the fund the market value of the loaned securities. In return, the lending agent assumes the fund's rights to the related collateral. If the collateral value is less than the cost to purchase identical securities, the lending agent is responsible for the shortfall, but only to the extent that such shortfall is not due to a decline in collateral value resulting from collateral reinvestment for which the fund bears the risk of loss. At period end, the fund had investment securities on loan, all of which were classified as equity securities in the fund's Portfolio of Investments, with a fair value of $96,613,875. The fair value of the fund's investment securities on loan and a related liability of $100,751,739 for the obligation to return cash collateral received on securities loaned are both presented gross in the Statement of Assets and Liabilities. The collateral on securities loaned exceeded the value of securities on loan at period end. The liability for cash collateral for securities loaned is carried at fair value, which is categorized as level 2 within the fair value hierarchy. A portion of the income generated upon investment of the collateral is remitted to the Borrowers, and the remainder is allocated

------

Massachusetts Investors Growth Stock Fund

*Notes to Financial Statements - continued* 

between the fund and the lending agent. On loans collateralized by U.S. Treasury and/or federal agency obligations, a fee is received from the Borrower, and is allocated between the fund and the lending agent. Income from securities lending is separately reported in the Statement of Operations. The dividend and interest income earned on the securities loaned is accounted for in the same manner as other dividend and interest income.

**Indemnifications** — Under the fund's organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the fund. Additionally, in the normal course of business, the fund enters into agreements with service providers that may contain indemnification clauses. The fund's maximum exposure under these agreements is unknown as this would involve future claims that may be made against the fund that have not yet occurred.

**Investment Transactions and Income** — Dividends received in cash are recorded on the ex-dividend date. Certain dividends from foreign securities will be recorded when the fund is informed of the dividend if such information is obtained subsequent to the ex-dividend date. Dividend and interest payments received in additional securities are recorded on the ex-dividend or ex-interest date in an amount equal to the value of the security on such date.

The fund may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statement of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statement of Operations.

Investment transactions are recorded on the trade date. In determining the net gain or loss on securities sold, the cost of securities is determined on the identified cost basis.

**Fees Paid Indirectly** — The fund's custody fee may be reduced by a credit earned under an arrangement that measures the value of U.S. dollars deposited with the custodian by the fund. The amount of the credit, for the year ended November 30, 2025, is shown as a reduction of total expenses in the Statement of Operations.

**Tax Matters and Distributions** — The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. As a result, no provision for federal income tax is required. The fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for generally a three year period. Management has analyzed the fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability. Foreign taxes, if any, have been accrued by the fund in the accompanying financial statements in accordance with the applicable foreign tax law. Foreign income taxes may be withheld by certain countries in which the fund invests. Additionally, capital gains realized by the fund on securities issued in or by certain foreign countries may be subject to capital gains tax imposed by those countries.

Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from U.S. generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future.

Book/tax differences primarily relate to wash sale loss deferrals and treating a portion of the proceeds from redemptions as a distribution for tax purposes.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

---

| | | |
|:---|:---|:---|
|  | &nbsp;&nbsp; **Year ended** <br>**11/30/25**<br>| &nbsp;&nbsp; **Year ended** <br>**11/30/24**<br>|
| Ordinary income (including any short-term capital gains) | &nbsp;&nbsp; $100713445 | &nbsp;&nbsp; $85972594 |
| Long-term capital gains | &nbsp;&nbsp; 986711062 | &nbsp;&nbsp; 400424101 |
| Total distributions | &nbsp;&nbsp; $1087424507 | &nbsp;&nbsp; $486396695 |

---

The federal tax cost and the tax basis components of distributable earnings were as follows:

------

Massachusetts Investors Growth Stock Fund

*Notes to Financial Statements - continued* 

---

| | |
|:---|:---|
| **As of 11/30/25** |  |
| Cost of investments | &nbsp;&nbsp; $5336162281 |
| Gross appreciation | &nbsp;&nbsp; 6179074233 |
| Gross depreciation | &nbsp;&nbsp; (96464698)<br>|
| Net unrealized appreciation (depreciation) | &nbsp;&nbsp; $6082609535 |
| Undistributed ordinary income | &nbsp;&nbsp; 60064650 |
| Undistributed long-term capital gain | &nbsp;&nbsp; 1111345584 |
| Other temporary differences | &nbsp;&nbsp; 30151 |
| Total distributable earnings (loss) | &nbsp;&nbsp; $7254049920 |

---

**Multiple Classes of Shares of Beneficial Interest** — The fund offers multiple classes of shares, which differ in their respective distribution and service fees. The fund's income, realized and unrealized gain (loss), and common expenses are allocated to shareholders based on the daily net assets of each class. Dividends are declared separately for each class. Differences in per share dividend rates are generally due to differences in separate class expenses. Class B and Class C shares will convert to Class A shares approximately eight years after purchase. The fund's distributions declared to shareholders as reported in the Statements of Changes in Net Assets are presented by class as follows:

---

| | | |
|:---|:---|:---|
|  | **Year** <br>**ended** <br>**11/30/25**<br>| **Year** <br>**ended** <br>**11/30/24**<br>|
| Class A | $442690059 | &nbsp;&nbsp; $191997563 |
| Class B | 1020993 | &nbsp;&nbsp; 668477 |
| Class C | 5913364 | &nbsp;&nbsp; 2506855 |
| Class I | 168563780 | &nbsp;&nbsp; 75705533 |
| Class R1 | 1006159 | &nbsp;&nbsp; 480982 |
| Class R2 | 5651394 | &nbsp;&nbsp; 2708570 |
| Class R3 | 68599381 | &nbsp;&nbsp; 30211788 |
| Class R4 | 49613058 | &nbsp;&nbsp; 26631457 |
| Class R6 | 344366319 | &nbsp;&nbsp; 155485470 |
| Total | $1087424507 | &nbsp;&nbsp; $486396695 |

---

**(3) Transactions with Affiliates**

**Investment Adviser** — The fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the fund. The management fee is computed daily and paid monthly at an annual rate of 0.33% of the fund's average daily net assets.

**Distributor** — MFS Fund Distributors, Inc. (MFD), a wholly-owned subsidiary of MFS, as distributor, received $193,296 for the year ended November 30, 2025, as its portion of the initial sales charge on sales of Class A shares of the fund.

The Board of Trustees has adopted a distribution plan for certain share classes pursuant to Rule 12b-1 of the Investment Company Act of 1940.

The fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. The distribution and service fees are computed daily and paid monthly.

------

Massachusetts Investors Growth Stock Fund

*Notes to Financial Statements - continued* 

**Distribution Plan Fee Table:** 

---

| | | | | | |
|:---|:---|:---|:---|:---|:---|
|  | **Distribution** <br>**Fee Rate (d)**<br>| **Service** <br>**Fee Rate (d)**<br>| **Total** <br>**Distribution** <br>**Plan (d)**<br>| **Annual** <br>**Effective** <br>**Rate (e)**<br>| **Distribution** <br>**and Service** <br>**Fee**<br>|
| Class A |  | 0.25% | 0.25% | 0.25% | $12455419 |
| Class B | 0.75% | 0.25% | 1.00% | 1.00% | 71247 |
| Class C | 0.75% | 0.25% | 1.00% | 1.00% | 499398 |
| Class R1 | 0.75% | 0.25% | 1.00% | 1.00% | 85445 |
| Class R2 | 0.25% | 0.25% | 0.50% | 0.50% | 285592 |
| Class R3 |  | 0.25% | 0.25% | 0.25% | 1923962 |
| Total Distribution and Service Fees  |  |  |  |  | $15321063 |

---

(d) In accordance with the distribution plan for certain classes, the fund pays distribution and/or service fees equal to these annual percentage rates of each

class's average daily net assets. The distribution and service fee rates disclosed by class represent the current rates in effect at the end of the reporting

period. Any rate changes, if applicable, are detailed below.

(e) The annual effective rates represent actual fees incurred under the distribution plan for the year ended November 30, 2025 based on each class's average daily net assets. MFD has voluntarily agreed to rebate a portion of each class's 0.25% service fee attributable to accounts for which there is no financial intermediary specified on the account except for accounts attributable to MFS or its affiliates' seed money. For the year ended November 30, 2025, this rebate amounted to $47,941, $83, and $176 for Class A, Class B, and Class C shares, respectively, and is included in the reduction of total expenses in the Statement of Operations.

Certain Class A shares are subject to a contingent deferred sales charge (CDSC) in the event of a shareholder redemption within 18 months of purchase. Class B shares are subject to a CDSC in the event of a shareholder redemption within six years of purchase. Class C shares are subject to a CDSC in the event of a shareholder redemption within 12 months of purchase. All contingent deferred sales charges are paid to MFD and during the year ended November 30, 2025, were as follows:

---

| | |
|:---|:---|
|  | **Amount** |
| Class A | $30361 |
| Class B | 909 |
| Class C | 2010 |

---

**Shareholder Servicing Agent** — MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives a fee from the fund for its services as shareholder servicing agent calculated as a percentage of the average daily net assets of the fund as determined periodically under the supervision of the fund's Board of Trustees. For the year ended November 30, 2025, the fee was $1,610,228, which equated to 0.0134% annually of the fund's average daily net assets. MFSC also receives reimbursement from the fund for out-of-pocket expenses, sub-accounting and other shareholder servicing costs which may be paid to affiliated and unaffiliated service providers. Class R6 shares do not incur sub-accounting fees. For the year ended November 30, 2025, these out-of-pocket expenses, sub-accounting and other shareholder servicing costs amounted to $8,113,131.

**Administrator** — MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on average daily net assets. The administrative services fee is computed daily and paid monthly. The administrative services fee incurred for the year ended November 30, 2025 was equivalent to an annual effective rate of 0.0047% of the fund's average daily net assets.

**Trustees' and Officers' Compensation** — The fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. Independent Trustees' compensation is accrued daily and paid subsequent to each Trustee Board meeting. The fund does not pay compensation directly to Trustees or officers of the fund who are also officers of the investment adviser, all of whom receive remuneration from MFS for their services to the fund. Certain officers and Trustees of the fund are officers or directors of MFS, MFD, and MFSC.

**Other** — The fund invests in the MFS Institutional Money Market Portfolio which is managed by MFS and seeks current income consistent with preservation of capital and liquidity. This money market fund does not pay a management fee to MFS but does incur investment and operating costs.

MFS purchased or redeemed fund shares on the dates indicated:

------

Massachusetts Investors Growth Stock Fund

*Notes to Financial Statements - continued* 

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Date** | **Transaction** | **Class** | **Shares** | **Amount** |
| 8/19/2024 | Redemption | Class A | 8 | $367 |
| 8/19/2024 | Redemption | Class B | 7 | 257 |
| 8/19/2024 | Redemption | Class I | 4 | 179 |
| 8/19/2024 | Redemption | Class R1 | 4 | 144 |
| 8/19/2024 | Redemption | Class R2 | 4 | 156 |
| 8/19/2024 | Redemption | Class R3 | 4 | 181 |
| 8/19/2024 | Redemption | Class R4 | 4 | 190 |
| 8/19/2024 | Redemption | Class R6 | 5 | 212 |

---

During the year ended November 30, 2025, pursuant to a policy adopted by the Board of Trustees and designed to comply with Rule 17a-7 under the Investment Company Act of 1940 (the "Act") and relevant guidance, the fund engaged in purchase and sale transactions with funds and accounts for which MFS serves as investment adviser or sub-adviser ("cross-trades") which amounted to $11,741,075 and $3,096,036, respectively. The sales transactions resulted in net realized gains (losses) of $(1,140,271).

**(4) Portfolio Securities**

For the year ended November 30, 2025, purchases and sales of investments, other than short-term obligations, aggregated $2,467,206,932 and $5,004,439,394, respectively.

**(5) Shares of Beneficial Interest** 

The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in fund shares were as follows:

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended** <br>**11/30/25** | **Year ended** <br>**11/30/25** | **Year ended** <br>**11/30/24** | **Year ended** <br>**11/30/24** |
|  | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares sold |  |  |  |  |
| Class A | 3922511 | &nbsp;&nbsp; $167217051 | &nbsp;&nbsp; 5362646 | &nbsp;&nbsp; $226664208 |
| Class B | 966 | &nbsp;&nbsp; 31777 | &nbsp;&nbsp; 1571 | &nbsp;&nbsp; 53935 |
| Class C | 154963 | &nbsp;&nbsp; 4918226 | &nbsp;&nbsp; 206662 | &nbsp;&nbsp; 6705262 |
| Class I | 4832218 | &nbsp;&nbsp; 217390857 | &nbsp;&nbsp; 7600662 | &nbsp;&nbsp; 336379504 |
| Class R1 | 27116 | &nbsp;&nbsp; 848584 | &nbsp;&nbsp; 45746 | &nbsp;&nbsp; 1466238 |
| Class R2 | 217758 | &nbsp;&nbsp; 8744801 | &nbsp;&nbsp; 212077 | &nbsp;&nbsp; 8506490 |
| Class R3 | 2669955 | &nbsp;&nbsp; 112689504 | &nbsp;&nbsp; 2136141 | &nbsp;&nbsp; 89468621 |
| Class R4 | 1908323 | &nbsp;&nbsp; 79478739 | &nbsp;&nbsp; 1856721 | &nbsp;&nbsp; 78566386 |
| Class R6 | 10906393 | &nbsp;&nbsp; 488246414 | &nbsp;&nbsp; 17403894 | &nbsp;&nbsp; 770536383 |
|  | 24640203 | &nbsp;&nbsp; $1079565953 | &nbsp;&nbsp; 34826120 | &nbsp;&nbsp; $1518347027 |
| Shares issued to shareholders <br>in reinvestment of distributions<br>|  |  |  |  |
| Class A | 9576094 | &nbsp;&nbsp; $406195422 | &nbsp;&nbsp; 4469508 | &nbsp;&nbsp; $175381763 |
| Class B | 31741 | &nbsp;&nbsp; 1019575 | &nbsp;&nbsp; 21756 | &nbsp;&nbsp; 666701 |
| Class C | 178367 | &nbsp;&nbsp; 5667853 | &nbsp;&nbsp; 79349 | &nbsp;&nbsp; 2406759 |
| Class I | 3509396 | &nbsp;&nbsp; 155794267 | &nbsp;&nbsp; 1705334 | &nbsp;&nbsp; 69765052 |
| Class R1 | 32456 | &nbsp;&nbsp; 1006159 | &nbsp;&nbsp; 16215 | &nbsp;&nbsp; 480982 |
| Class R2 | 138064 | &nbsp;&nbsp; 5591784 | &nbsp;&nbsp; 71140 | &nbsp;&nbsp; 2677603 |
| Class R3 | 1645091 | &nbsp;&nbsp; 68599381 | &nbsp;&nbsp; 782121 | &nbsp;&nbsp; 30211788 |
| Class R4 | 598249 | &nbsp;&nbsp; 25657478 | &nbsp;&nbsp; 372265 | &nbsp;&nbsp; 14757064 |
| Class R6 | 7081984 | &nbsp;&nbsp; 314977922 | &nbsp;&nbsp; 3456110 | &nbsp;&nbsp; 141664917 |
|  | 22791442 | &nbsp;&nbsp; $984509841 | &nbsp;&nbsp; 10973798 | &nbsp;&nbsp; $438012629 |

---

------

Massachusetts Investors Growth Stock Fund

*Notes to Financial Statements - continued* 

---

| | | | | |
|:---|:---|:---|:---|:---|
|  | **Year ended**<br> **11/30/25** | **Year ended**<br> **11/30/25** | **Year ended**<br> **11/30/24** | **Year ended**<br> **11/30/24** |
|  | **Shares** | **Amount** | **Shares** | **Amount** |
| Shares reacquired |  |  |  |  |
| Class A | (16168577)<br>| &nbsp;&nbsp; $(696970180)<br>| &nbsp;&nbsp; (15047647)<br>| &nbsp;&nbsp; $(643642266)<br>|
| Class B | (162088)<br>| &nbsp;&nbsp; (5258847)<br>| &nbsp;&nbsp; (225547)<br>| &nbsp;&nbsp; (7525877)<br>|
| Class C | (498310)<br>| &nbsp;&nbsp; (15930899)<br>| &nbsp;&nbsp; (444745)<br>| &nbsp;&nbsp; (14631969)<br>|
| Class I | (11846033)<br>| &nbsp;&nbsp; (538873355)<br>| &nbsp;&nbsp; (11288003)<br>| &nbsp;&nbsp; (501952109)<br>|
| Class R1 | (82897)<br>| &nbsp;&nbsp; (2655121)<br>| &nbsp;&nbsp; (114604)<br>| &nbsp;&nbsp; (3874941)<br>|
| Class R2 | (751734)<br>| &nbsp;&nbsp; (30958150)<br>| &nbsp;&nbsp; (581556)<br>| &nbsp;&nbsp; (24045675)<br>|
| Class R3 | (4728105)<br>| &nbsp;&nbsp; (200741949)<br>| &nbsp;&nbsp; (8430104)<br>| &nbsp;&nbsp; (342965616)<br>|
| Class R4 | (6890447)<br>| &nbsp;&nbsp; (294000564)<br>| &nbsp;&nbsp; (5156720)<br>| &nbsp;&nbsp; (222100007)<br>|
| Class R6 | (38630632)<br>| &nbsp;&nbsp; (1769551623)<br>| &nbsp;&nbsp; (23301663)<br>| &nbsp;&nbsp; (1040397660)<br>|
|  | (79758823)<br>| &nbsp;&nbsp; $(3554940688)<br>| &nbsp;&nbsp; (64590589)<br>| &nbsp;&nbsp; $(2801136120)<br>|
| Net change |  |  |  |  |
| Class A | (2669972)<br>| &nbsp;&nbsp; $(123557707)<br>| &nbsp;&nbsp; (5215493)<br>| &nbsp;&nbsp; $(241596295)<br>|
| Class B | (129381)<br>| &nbsp;&nbsp; (4207495)<br>| &nbsp;&nbsp; (202220)<br>| &nbsp;&nbsp; (6805241)<br>|
| Class C | (164980)<br>| &nbsp;&nbsp; (5344820)<br>| &nbsp;&nbsp; (158734)<br>| &nbsp;&nbsp; (5519948)<br>|
| Class I | (3504419)<br>| &nbsp;&nbsp; (165688231)<br>| &nbsp;&nbsp; (1982007)<br>| &nbsp;&nbsp; (95807553)<br>|
| Class R1 | (23325)<br>| &nbsp;&nbsp; (800378)<br>| &nbsp;&nbsp; (52643)<br>| &nbsp;&nbsp; (1927721)<br>|
| Class R2 | (395912)<br>| &nbsp;&nbsp; (16621565)<br>| &nbsp;&nbsp; (298339)<br>| &nbsp;&nbsp; (12861582)<br>|
| Class R3 | (413059)<br>| &nbsp;&nbsp; (19453064)<br>| &nbsp;&nbsp; (5511842)<br>| &nbsp;&nbsp; (223285207)<br>|
| Class R4 | (4383875)<br>| &nbsp;&nbsp; (188864347)<br>| &nbsp;&nbsp; (2927734)<br>| &nbsp;&nbsp; (128776557)<br>|
| Class R6 | (20642255)<br>| &nbsp;&nbsp; (966327287)<br>| &nbsp;&nbsp; (2441659)<br>| &nbsp;&nbsp; (128196360)<br>|
|  | (32327178)<br>| &nbsp;&nbsp; $(1490864894)<br>| &nbsp;&nbsp; (18790671)<br>| &nbsp;&nbsp; $(844776464)<br>|

---

Effective June 1, 2019, purchases of the fund's Class B shares were closed to new and existing investors subject to certain exceptions. Effective September 29, 2023, purchases of the fund's Class R1 and Class R2 shares were closed to new eligible investors.

**(6) Line of Credit**

The fund and certain other funds managed by MFS participate in a $1.45 billion unsecured committed line of credit of which $1.2 billion is reserved for use by the fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of 1) Daily Simple SOFR (Secured Overnight Financing Rate) plus 0.10%, 2) the Federal Funds Effective Rate, or 3) the Overnight Bank Funding Rate, each plus an agreed upon spread. A commitment fee, based on the average daily unused portion of the committed line of credit, is allocated among the participating funds. The line of credit expires on March 12, 2026 unless extended or renewed. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended November 30, 2025, the fund's commitment fee and interest expense were $58,297 and $0, respectively, and are included in "Miscellaneous" expense in the Statement of Operations.

**(7) Investments in Affiliated Issuers**

An affiliated issuer may be considered one in which the fund owns 5% or more of the outstanding voting securities, or a company which is under common control. The following were affiliated issuers for the year ended November 30, 2025:

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp; **Beginning** <br>**Value**<br>| **Purchases** | &nbsp;&nbsp; **Sales** <br>**Proceeds**<br>| &nbsp;&nbsp; **Realized** <br>**Gain** <br>**(Loss)**<br>| &nbsp;&nbsp; **Change in** <br>**Unrealized** <br>**Appreciation** <br> **or** <br>**Depreciation**<br>| &nbsp;&nbsp; **Ending** <br>**Value**<br>|
| MFS Institutional Money Market <br> Portfolio<br>| &nbsp;&nbsp; $71133707 | &nbsp;&nbsp; $2091872532 | &nbsp;&nbsp; $2075379636 | &nbsp;&nbsp; $1183 | &nbsp;&nbsp; $(2681)<br>| &nbsp;&nbsp; $87625105 |

---

------

Massachusetts Investors Growth Stock Fund

*Notes to Financial Statements - continued* 

---

| | | |
|:---|:---|:---|
| **Affiliated Issuers** | &nbsp;&nbsp; **Dividend** <br>**Income**<br>| &nbsp;&nbsp; **Capital Gain** <br>**Distributions**<br>|
| MFS Institutional Money Market Portfolio | &nbsp;&nbsp; $2912867 | $— |

---

------

Massachusetts Investors Growth Stock Fund

**Report of Independent Registered Public Accounting Firm**

To the Shareholders and the Board of Trustees of Massachusetts Investors Growth Stock Fund

**Opinion on the Financial Statements**

We have audited the accompanying statement of assets and liabilities of Massachusetts Investors Growth Stock Fund (the "Fund"), including the portfolio of investments, as of November 30, 2025, and the related statement of operations for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund at November 30, 2025, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period then ended and its financial highlights for each of the five years in the period then ended, in conformity with U.S. generally accepted accounting principles.

**Basis for Opinion**

These financial statements are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements 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 Fund 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 are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of the Fund's internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, 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. Our procedures included confirmation of securities owned as of November 30, 2025, by correspondence with the custodian, brokers and others; when replies were not received from brokers and others, 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. We believe that our audits provide a reasonable basis for our opinion.

/s/ Ernst & Young LLP

We have served as the auditor of one or more MFS investment companies since 1993.

Boston, Massachusetts

January 14, 2026

------

Massachusetts Investors Growth Stock Fund

Federal Tax Information (unaudited)

The fund will notify shareholders of amounts for use in preparing 2025 income tax forms in January 2026. The following information is provided pursuant to provisions of the Internal Revenue Code.

The fund designates the maximum amount allowable as qualified dividend income eligible to be taxed at the same rate as long-term capital gain.

The fund designates $1,285,973,000 as capital gain dividends paid during the fiscal year.

For corporate shareholders, 84.11% of the ordinary income dividends paid during the prior calendar year qualify for the corporate dividends received deduction.

The fund designates the maximum amount allowable as Section 199A dividends as defined in Proposed Treasury Regulation §1.199A-3(d).

------

**ITEM 8. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.**

There is nothing to report for this item for Massachusetts Investors Growth Stock Fund.

**ITEM 9. PROXY DISCLOSURES FOR OPEN-END MANAGEMENT INVESTMENT COMPANIES.**

There is nothing to report for this item for Massachusetts Investors Growth Stock Fund.

**ITEM 10. REMUNERATION PAID TO DIRECTORS, OFFICERS, AND OTHERS OF OPEN-END MANAGEMENT INVESTMENT COMPANIES.**

This information is disclosed as part of the financial statements included in Item 7 above for Massachusetts Investors Growth Stock Fund. See the Statement of Operations and Note 3 within the Notes to Financial Statements for more information.

**ITEM 11. STATEMENT REGARDING BASIS FOR APPROVAL OF INVESTMENT ADVISORY CONTRACT.**

------

Massachusetts Investors Growth Stock Fund

**Board Review of Investment Advisory Agreement**

**Massachusetts Investors Growth Stock Fund**

The Investment Company Act of 1940 requires that both the full Board of Trustees and a majority of the non-interested ("independent") Trustees, voting separately, annually approve the continuation of the Fund's investment advisory agreement with MFS. The Trustees consider matters bearing on the Fund and its advisory arrangements at their meetings throughout the year, including a review of performance data at each regular meeting. In addition, the independent Trustees met several times over the course of three months beginning in May and ending in July, 2025 ("contract review meetings") for the specific purpose of considering whether to approve the continuation of the investment advisory agreement for the Fund and the other investment companies that the Board oversees (the "MFS Funds"). The independent Trustees were assisted in their evaluation of the Fund's investment advisory agreement by independent legal counsel, from whom they received separate legal advice and with whom they met separately from MFS during various contract review meetings. The independent Trustees were also assisted in this process by an independent consultant who was retained by and reported to the independent Trustees.

In connection with their deliberations regarding the continuation of the investment advisory agreement, the Trustees, including the independent Trustees, considered such information and factors as they believed, in light of the legal advice furnished to them and their own business judgment, to be relevant. The investment advisory agreement for the Fund was considered separately, although the Trustees also took into account the common interests of all MFS Funds in their review. As described below, the Trustees considered the nature, quality, and extent of the various investment advisory, administrative, and shareholder services performed by MFS under the existing investment advisory agreement and other arrangements with the Fund.

In connection with their contract review meetings, the Trustees received and relied upon materials that included, among other items: (i) information provided by Broadridge Financial Solutions, Inc. ("Broadridge"), an independent third party, on the investment performance of the Fund for various time periods ended December 31, 2024 and the investment performance of a group of funds with substantially similar investment classifications/objectives (the "Broadridge performance universe"), (ii) information provided by Broadridge on the Fund's advisory fees and other expenses and the advisory fees and other expenses of comparable funds identified by Broadridge as well as all other funds in the same investment classification/category (the "Broadridge expense group and universe"), (iii) information provided by MFS on the advisory fees of portfolios of other clients of MFS, including institutional separate accounts and other clients, (iv) information as to whether and to what extent applicable expense waivers, reimbursements or fee "breakpoints" are observed for the Fund, (v) information regarding MFS' financial results and financial condition, including MFS' and certain of its affiliates' estimated profitability from services performed for the Fund and the MFS Funds as a whole, and compared to MFS' institutional business, (vi) MFS' views regarding the outlook for the mutual fund industry and the strategic business plans of MFS, (vii) descriptions of various functions performed by MFS for the Funds, such as compliance monitoring and portfolio trading practices, and (viii) information regarding the overall organization of MFS, including information about MFS' senior management and other personnel providing investment advisory, administrative and other services to the Fund and the other MFS Funds. The comparative performance, fee and expense information prepared and provided by Broadridge was not independently verified and the independent Trustees did not independently verify any information provided to them by MFS.

The Trustees' conclusion as to the continuation of the investment advisory agreement was based on a comprehensive consideration of all information provided to the Trustees and not the result of any single factor. Some of the factors that figured particularly in the Trustees' deliberations are described below, although individual Trustees may have evaluated the information presented differently from one another, giving different weights to various factors. It is also important to recognize that the fee arrangements for the Fund and other MFS Funds are the result of years of review and discussion between the independent Trustees and MFS, that certain aspects of such arrangements may receive greater scrutiny in some years than in others, and that the Trustees' conclusions may be based, in part, on their consideration of these same arrangements during the course of the year and in prior years.

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's Class I shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2024, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's Class I shares was in the 5th quintile relative to the other funds in the universe for this five-year period (the 1st quintile being the best performers and the 5th quintile being the worst performers). The total return performance of the Fund's Class I shares was in the 5th quintile for the one-year period and the 4th quintile for the three-year period ended December 31, 2024 relative to the Broadridge performance universe. Because of the passage of time, these performance results may differ from the performance results for more recent periods, including those shown elsewhere in this report.

The Trustees expressed concern to MFS about the substandard investment performance of the Fund. In the course of their deliberations, the Trustees took into account information provided by MFS in connection with the contract review meetings, as well as during investment review meetings conducted with portfolio management personnel during the course of the year, as to MFS' efforts to improve the Fund's performance. In addition, the trustees requested that they receive a separate update on the Fund's

------

Massachusetts Investors Growth Stock Fund

*Board Review of Investment Advisory Agreement - continued*

performance at each of their regular meetings. After reviewing these and related factors, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that MFS' responses and efforts and plans to improve investment performance were sufficient to support approval of the continuance of the investment advisory agreement for an additional one-year period, but that they would continue to closely monitor the performance of the Fund.

In assessing the reasonableness of the Fund's advisory fee, the Trustees considered, among other information, the Fund's advisory fee and the total expense ratio of the Fund's Class I shares as a percentage of average daily net assets and the advisory fee and total expense ratios of the Broadridge expense group based on information provided by Broadridge. The Trustees considered that, according to the data provided by Broadridge (which takes into account any fee reductions or expense limitations that were in effect during the Fund's last fiscal year), the Fund's effective advisory fee rate and total expense ratio were each lower than the Broadridge expense group median.

The Trustees also considered the advisory fees charged by MFS to any institutional separate accounts advised by MFS ("separate accounts") and unaffiliated investment companies for which MFS serves as subadviser ("subadvised funds") that have comparable investment strategies to the Fund, if any. In comparing these fees, the Trustees considered information provided by MFS as to the generally broader scope of services provided by MFS to the Fund, as well as the more extensive regulatory burdens imposed on MFS in managing the Fund, in comparison to separate accounts and subadvised funds. The Trustees also considered the higher demands placed on MFS' investment personnel and trading infrastructure as a result of the daily cash in-flows and out-flows of the Fund in comparison to separate accounts.

The Trustees also considered whether the Fund may benefit from any economies of scale in the management of the Fund in the event of growth in assets of the Fund. They noted that the Fund's advisory fee rate schedule is not subject to any breakpoints. Taking into account that the Fund's effective advisory fee rate was lower than the Broadridge expense group median described above, the Trustees determined not to recommend any advisory fee breakpoints for the Fund at this time.

The Trustees also considered information prepared by MFS relating to MFS' costs and profits with respect to the Fund, the MFS Funds considered as a group, and other investment companies and accounts advised by MFS, as well as MFS' methodologies used to determine and allocate its costs to the MFS Funds, the Fund and other accounts and products for purposes of estimating profitability.

After reviewing these and other factors described herein, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that the advisory fees charged to the Fund represent reasonable compensation in light of the services being provided by MFS to the Fund.

In addition, the Trustees considered MFS' resources and related efforts to continue to retain, attract and motivate capable personnel to serve the Fund. The Trustees also considered current and developing conditions in the financial services industry, including the presence of large and well-capitalized companies which are spending, and appear to be prepared to continue to spend, substantial sums to engage personnel and to provide services to competing investment companies. In this regard, the Trustees also considered the financial resources of MFS and its ultimate parent, Sun Life Financial Inc. The Trustees also considered the advantages and possible disadvantages to the Fund of having an adviser that also serves other investment companies as well as other accounts.

The Trustees also considered the nature, quality, cost, and extent of administrative, transfer agency, and distribution services provided to the Fund by MFS and its affiliates under agreements and plans other than the investment advisory agreement, including any 12b-1 fees the Fund pays to MFS Fund Distributors, Inc., an affiliate of MFS. The Trustees also considered the nature, extent and quality of certain other services MFS performs or arranges for on the Fund's behalf, which may include securities lending programs, directed expense payment programs, class action recovery programs, and MFS' interaction with third-party service providers, principally custodians and sub-custodians. The Trustees concluded that the various non-advisory services provided by MFS and its affiliates on behalf of the Fund were satisfactory.

The Trustees considered so-called "fall-out benefits" to MFS such as reputational value derived from serving as investment manager to the MFS Funds. The Trustees also considered that MFS discontinued its historic practice of obtaining investment research from portfolio brokerage commissions paid by certain MFS Funds effective January 2018, and directly pays or voluntarily reimburses a Fund, if applicable, for the costs of external research acquired through the use of the Fund's portfolio brokerage commissions.

Based on their evaluation of factors that they deemed to be material, including those factors described above, the Board of Trustees, including the independent Trustees, concluded that the Fund's investment advisory agreement with MFS should be continued for an additional one-year period, commencing August 1, 2025.

------

#### &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; ITEM 12. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &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; ITEM 13. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &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; ITEM 14. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS.
Not applicable to the Registrant.

------

#### &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; ITEM 15. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant's Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 407 (c)(2)(iv) of Regulation S-K or this Item.

------

#### &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; ITEM 16. CONTROLS AND PROCEDURES.
* Based upon their evaluation of the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the "Act")) as conducted within 90 days of the filing date of this report on Form N-CSR, the Registrant's principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the Registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. 

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

------

#### &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; ITEM 17. DISCLOSURE OF SECURITIES LENDING ACTIVITIES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES.
Not applicable to the Registrant.

------

#### &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; ITEM 18. RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION.
Not applicable to the Registrant.

------

#### ITEM 19. EXHIBITS.
* Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit: Attached hereto as [EX-99.COE](Code_of_Ethics.htm).

* Any policy required by the listing standards adopted pursuant to Rule 10D-1 under the Exchange Act (17 CFR 240.10D-1) by the registered national securities exchange or registered national securities association upon which the registrant's securities are listed. Not applicable.

* A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Act (17 CFR 270.30a-2): Attached hereto as [EX-99.302CERT](99.302.htm).

* Any written solicitation to purchase securities under Rule 23c-1 under the Act (17 CFR 270.23c-1) sent or given during the period covered by the report by or on behalf of the registrant to 10 or more persons. Not applicable.

* Change in the registrant's independent public accountant. Not applicable.

* If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule 30a-2(b) under the Act (17 CFR 270.30a-2(b)), Rule 13a-14(b) or Rule 15d-14(b) under the Exchange Act (17 CFR 240.13a-14(b) or 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed "filed" for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference. Attached hereto as [EX-99.906CERT](99.906.htm).

------

#### Notice
A copy of the Amended and Restated Declaration of Trust, as amended, of the Registrant is on file with the Secretary of State of The Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant.

#### 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.

(Registrant) MASSACHUSETTS INVESTORS GROWTH STOCK TRUST

By (Signature and Title)\*

/S/ DAVID L. DILORENZO

David L. DiLorenzo, President

Date: January 14, 2026

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.

By (Signature and Title)\*

/S/ DAVID L. DILORENZO

David L. DiLorenzo, President (Principal Executive Officer)

Date: January 14, 2026

By (Signature and Title)\*

/S/ KASEY L. PHILLIPS&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;

Kasey L. Phillips, Treasurer (Principal Financial Officer and Accounting Officer)

Date: January 14, 2026

\* Print name and title of each signing officer under his or her signature.

------

## Exhibit 99.906

**<u>EX-99.906CERT</u>**

**MASSACHUSETTS INVESTORS GROWTH STOCK TRUST**

**Certification Pursuant to Section 906 of the Sarbanes-Oxley Act**

I, David L. DiLorenzo, certify that, to my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.The Form N-CSR (the "Report") of Massachusetts Investors Growth Stock Trust (the "Registrant") fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Date: January 14, 2026

<u>/S/ DAVID L. DILORENZO</u>

David L. DiLorenzo

President (Principal Executive Officer)

**A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.**

**<u>EX-99.906CERT</u>**

**MASSACHUSETTS INVESTORS GROWTH STOCK TRUST**

**Certification Pursuant to Section 906 of the Sarbanes-Oxley Act**

I, Kasey L. Phillips, certify that, to my knowledge:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.The Form N-CSR (the "Report") of Massachusetts Investors Growth Stock Trust (the "Registrant") fully complies for the period covered by the Report with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

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

Date: January 14, 2026

<u>/S/ KASEY L. PHILLIPS</u>

Kasey L. Phillips

Treasurer (Principal Financial Officer and Accounting Officer)

**A signed original of this written statement required by Section 906 has been provided to the Registrant and will be retained by the Registrant and furnished to the Securities and Exchange Commission or its staff upon request.**

------

## Ex-99.Code

![Image is missing](gtbeiguf40abt7aymae4k.jpg)

<u>EX-99.COE</u>

**Code of Ethics for Principal Executive and Principal Financial Officers**

**Effective April 1, 2024**

**Policy Purpose and Summary**

Section 406 of the Sarbanes-Oxley Act requires that each MFS Fund registered under the Investment Company Act of 1940 disclose whether or not it has adopted a code of ethics for senior financial officers, applicable to its principal financial officer and principal accounting officer.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**I.Overview**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;A. Covered Officers/Purpose of the Code

This code of ethics (this "Code") has been adopted by the funds (collectively, "Funds" and each, "Fund") under supervision of the MFS Funds Board (the "Board") and applies to the Funds' Principal Executive Officer and Principal Financial Officer (the "Covered Officers" each of whom is set forth in Exhibit A) for the purpose of promoting:

&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;•honest and ethical conduct, including the ethical handling of actual or apparent conflicts of interest between personal and professional relationships;

&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;•full, fair, accurate, timely and understandable disclosure in reports and documents that the Funds file with, or submit to, the Securities and Exchange Commission ("SEC") and in other public communications made by the Funds;

&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;•compliance by the Funds with applicable laws and governmental rules and regulations;

&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;•the prompt internal reporting of violations of the Code to an appropriate person or persons identified in the Code; and

&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;•accountability for adherence to the Code.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B. Conduct Guidelines

Each Covered Officer should adhere to a high standard of business ethics and should be sensitive to situations that may give rise to actual as well as apparent conflicts of interest. In addition, each Covered Officer should not place his or her personal interests ahead of the Funds' interests and should endeavor to act honestly and ethically. In furtherance of the foregoing, each Covered Officer must:

&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;•not use his or her personal influence or personal relationships improperly to influence investment decisions or financial reporting for any Fund whereby the Covered Officer would benefit personally to the detriment of the Fund; and

&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not cause a Fund to take action, or fail to take action, for the individual personal benefit of the Covered Officer rather than the benefit of the Fund.

The following activities, which could create the appearance of a conflict of interest, are permitted only with the approval of the Funds' Chief Legal Officer ("CLO"):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•service as a director on the board of any "for profit" company other than the board of the Funds' investment adviser or its subsidiaries or board of a pooled investment vehicle sponsored by the Funds' investment adviser or its subsidiaries;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•running for political office;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•the receipt of any Fund business-related gift or any entertainment from any company with which a Fund has current or prospective business dealings unless such gift or entertainment is permitted by the gifts and entertainment policy of the Funds' investment adviser;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•any material ownership interest in, or any consulting or employment relationship with, any Fund service providers (e.g., custodian banks, audit firms), other than the Funds' investment adviser, principal underwriter, administrator or any affiliated person thereof;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•a direct or indirect financial interest in commissions, transaction charges or spreads paid by a Fund for effecting portfolio transactions or for selling or redeeming shares, other than an interest arising from the Covered Officer's employment or securities ownership.

**C.Disclosure and Compliance**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•Each Covered Officer should familiarize himself or herself with the disclosure requirements generally applicable to the Funds;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•each Covered Officer should not knowingly misrepresent, or cause others to misrepresent, facts about a Fund to others, whether within or outside the Fund, including to the Fund's trustees and auditors, and to governmental regulators and self-regulatory organizations;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•each Covered Officer should, to the extent appropriate within his or her area of Fund responsibility, consult with other officers and employees of the Funds and the adviser with the goal of promoting full, fair, accurate, timely and understandable disclosure in the reports and documents the Funds file with, or submit to, the SEC and in other public communications made by the Funds; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•it is the responsibility of each Covered Officer to promote compliance within his or her area of Fund responsibility with the standards and restrictions imposed by applicable laws, rules and regulations.

**D.Reporting and Accountability**

Each Covered Officer must:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•upon adoption of the Code (or thereafter as applicable, upon becoming a Covered Officer), affirm in writing to the Board that he or she has received, read, and understands the Code;

&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•annually thereafter affirm to the Board that he or she has complied with the requirements of the Code;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•annually report to the CLO affiliations and relationships which are or may raise the appearance of a conflict of interest with the Covered Officer's duties to the Funds, as identified in the annual Trustee and Officer Questionnaire;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•not retaliate against any other Covered Officer or any officer or employee of the Funds or their affiliated persons for reports of potential violations that are made in good faith; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;•notify the CLO promptly if he or she knows of any violation of this Code. Failure to do so is itself a violation of this Code.

The CLO is responsible for applying this Code to specific situations in which questions are presented under it, granting waivers upon consultation with the Board or its designee, investigating violations, and has the authority to interpret this Code in any particular situation. The CLO will report requests for waivers to the Board (or a designee thereof) promptly upon receipt of a waiver request and will periodically report to the Board any approvals granted since the last report.

The CLO will take all appropriate action to investigate any potential violations reported to him or her and to report any violations to the Board. If the Board concurs that a violation has occurred, it will consider appropriate action, which may include review of, and appropriate modifications to, applicable policies and procedures; notification to appropriate personnel of the investment adviser or its board; or a recommendation to dismiss the Covered Officer.

Any changes to or waivers of this Code will, to the extent required, be disclosed as provided by SEC rules.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;E. Confidentiality

All reports and records prepared or maintained pursuant to this Code and under the direction of the CLO will be considered confidential and shall be maintained and protected accordingly. Except as otherwise required by law or this Code, such matters shall not be disclosed to anyone other than the Funds' Board, its counsel, counsel to the Board's independent trustees and senior management and the board of directors of the Fund's investment adviser and its counsel.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;F. Internal Use

The Code is intended solely for the internal use by the Funds and does not constitute an admission, by or on behalf of any Fund, as to any fact, circumstance, or legal conclusion.

**II.Supervision**

The Board of Trustees of the Funds, including a majority of the Trustees who are not "interested persons" (as defined in the 1940 Act) of the Funds, shall review no less frequently than annually, a report from the CLO regarding the affirmations of the principal executive officer and the principal financial officer as to compliance with this Code.

&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;**III.Interpretation and Escalation**

Breaches of the Code are reviewed by the CLO and communicated to the Board of Trustees of the affected Fund(s). Interpretations of this Policy shall be made from time to time by the CLO, as needed, and questions regarding the application of this Policy to a specific set of facts are escalated to the CLO.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;IV. Authority

Section 406 of the Sarbanes-Oxley Act.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;**V.Monitoring**

Adherence to this policy is monitored by the CLO.

---

| | |
|:---|:---|
| VI. | **Related Policies** |
|  | This Code shall be the sole code of ethics adopted by the Funds for purposes of |
|  | Section 406 of the Sarbanes-Oxley Act and the rules and forms applicable to |
|  | registered investment companies thereunder. Insofar as other policies or procedures |
|  | of the Funds, the Funds' adviser, principal underwriter, or other service providers |
|  | govern or purport to govern the behavior or activities of the Covered Officers who |
|  | are subject to this Code, they are superseded by this Code to the extent that they |
|  | overlap or conflict with the provisions of this Code. The Funds' and their investment |
|  | adviser's codes of ethics under Rule 17j-1 under the Investment Company Act and |
|  | any other codes or policies or procedures adopted by the Funds or their investment |
|  | adviser or other service providers are separate requirements and are not part of this |
|  | Code. |
| VII. | **Amendment** |
|  | Any amendments to this Code, other than amendments to Exhibit A, must be |
|  | approved or ratified by a majority vote of the Board, including a majority of |
|  | independent trustees. |
| VIII. | **Recordkeeping** |
|  | All required books, records and other documentation shall be retained in accordance |
|  | with MFS' related record retention policy. |

---

**Additional procedures may need to be implemented by departments to properly comply with this policy.**

**<u>Exhibit A</u>**

**<u>As of April 1, 2024</u>**

**Persons Covered by this Code of Ethics**

Funds' Principal Executive Officer: David L. DiLorenzo

Funds' Principal Financial Officer: Kasey L. Phillips

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## Ex-99

**<u>EX-99.302CERT</u>**

**MASSACHUSETTS INVESTORS GROWTH STOCK TRUST**

**Certification Pursuant to Section 302 of the Sarbanes-Oxley Act**

I, David L. DiLorenzo, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.I have reviewed this report on Form N-CSR of Massachusetts Investors Growth Stock Trust;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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 period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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 directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&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.

Date: January 14, 2026

<u>/S/ DAVID L. DILORENZO</u>

David L. DiLorenzo

President (Principal Executive Officer)

**<u>EX-99.302CERT</u>**

**MASSACHUSETTS INVESTORS GROWTH STOCK TRUST**

**Certification Pursuant to Section 302 of the Sarbanes-Oxley Act**

I, Kasey L. Phillips, certify that:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.I have reviewed this report on Form N-CSR of Massachusetts Investors Growth Stock Trust;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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 period covered by the report that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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 directors (or persons performing the equivalent functions):

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&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;&nbsp;&nbsp;&nbsp;&nbsp;&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.

Date: January 14, 2026

<u>/S/ KASEY L. PHILLIPS</u>

Kasey L. Phillips

Treasurer (Principal Financial Officer and Accounting Officer)

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