AYI

SEC.gov | Request Rate Threshold Exceeded

U.S. Securities and Exchange Commission

You’ve Exceeded the SEC’s Traffic Limit

Your request rate has exceeded the SEC’s maximum allowable requests per second. Your access to SEC.gov will be limited for 10 minutes.

Current guidelines limit each user to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests. To ensure that SEC.gov remains available to all users, we reserve the right to block IP addresses that submit excessive requests.

The block will be lifted automatically by waiting 10 minutes. Continuing to exceed the SEC’s maximum allowable request rate during the time-out period will extend the duration of the time-out period. To ensure fair access for all users, please reduce the rate of your requests and visit SEC.gov again after the 10 minute time-out period has passed.

For best practices on efficiently downloading information from SEC.gov, including the latest EDGAR filings, visit sec.gov/developer. You can also sign up for email updates on the SEC open data program, including best practices that make it more efficient to download data, and SEC.gov enhancements that may impact scripted downloading processes. For more information, contact opendata@sec.gov.

For more information, please see the SEC’s Web Site Privacy and Security Policy. Thank you for your interest in the U.S. Securities and Exchange Commission.

Reference ID: 0.e618d017.1784723531.75fba3b

More Information

Internet Security Policy

By using this site, you are agreeing to security monitoring and auditing. For security purposes, and to ensure that the public service remains available to users, this government computer system employs programs to monitor network traffic to identify unauthorized attempts to upload or change information or to otherwise cause damage, including attempts to deny service to users.

Unauthorized attempts to upload information and/or change information on any portion of this site are strictly prohibited and are subject to prosecution under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act of 1996 (see Title 18 U.S.C. §§ 1001 and 1030).

To ensure our website performs well for all users, the SEC monitors the frequency of requests for SEC.gov content to ensure automated searches do not impact the ability of others to access SEC.gov content. We reserve the right to block IP addresses that submit excessive requests. Current guidelines limit users to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests.

If a user or application submits more than 10 requests per second, further requests from the IP address(es) may be limited for a brief period. Once the rate of requests has dropped below the threshold for 10 minutes, the user may resume accessing content on SEC.gov. This SEC practice is designed to limit excessive automated searches on SEC.gov and is not intended or expected to impact individuals browsing the SEC.gov website.

Note that this policy may change as the SEC manages SEC.gov to ensure that the website performs efficiently and remains available to all users.

Note: We do not offer technical support for developing or debugging scripted downloading processes.

SEC.gov | Request Rate Threshold Exceeded

U.S. Securities and Exchange Commission

You’ve Exceeded the SEC’s Traffic Limit

Your request rate has exceeded the SEC’s maximum allowable requests per second. Your access to SEC.gov will be limited for 10 minutes.

Current guidelines limit each user to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests. To ensure that SEC.gov remains available to all users, we reserve the right to block IP addresses that submit excessive requests.

The block will be lifted automatically by waiting 10 minutes. Continuing to exceed the SEC’s maximum allowable request rate during the time-out period will extend the duration of the time-out period. To ensure fair access for all users, please reduce the rate of your requests and visit SEC.gov again after the 10 minute time-out period has passed.

For best practices on efficiently downloading information from SEC.gov, including the latest EDGAR filings, visit sec.gov/developer. You can also sign up for email updates on the SEC open data program, including best practices that make it more efficient to download data, and SEC.gov enhancements that may impact scripted downloading processes. For more information, contact opendata@sec.gov.

For more information, please see the SEC’s Web Site Privacy and Security Policy. Thank you for your interest in the U.S. Securities and Exchange Commission.

Reference ID: 0.e618d017.1784723534.75fda88

More Information

Internet Security Policy

By using this site, you are agreeing to security monitoring and auditing. For security purposes, and to ensure that the public service remains available to users, this government computer system employs programs to monitor network traffic to identify unauthorized attempts to upload or change information or to otherwise cause damage, including attempts to deny service to users.

Unauthorized attempts to upload information and/or change information on any portion of this site are strictly prohibited and are subject to prosecution under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act of 1996 (see Title 18 U.S.C. §§ 1001 and 1030).

To ensure our website performs well for all users, the SEC monitors the frequency of requests for SEC.gov content to ensure automated searches do not impact the ability of others to access SEC.gov content. We reserve the right to block IP addresses that submit excessive requests. Current guidelines limit users to a total of no more than 10 requests per second, regardless of the number of machines used to submit requests.

If a user or application submits more than 10 requests per second, further requests from the IP address(es) may be limited for a brief period. Once the rate of requests has dropped below the threshold for 10 minutes, the user may resume accessing content on SEC.gov. This SEC practice is designed to limit excessive automated searches on SEC.gov and is not intended or expected to impact individuals browsing the SEC.gov website.

Note that this policy may change as the SEC manages SEC.gov to ensure that the website performs efficiently and remains available to all users.

Note: We do not offer technical support for developing or debugging scripted downloading processes.

ayi-202601080001144215false00011442152026-01-082026-01-08

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): January 8, 2026

ACUITY INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) Acuity Brands, Inc. (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On January 8, 2026, Acuity Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended November 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated January 8, 2026.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: January 8, 2026

ACUITY INC.

By:/s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202510010001144215false00011442152025-10-012025-10-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): October 1, 2025

ACUITY INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On October 1, 2025, Acuity Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter and year ended August 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated October 1, 2025.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: October 1, 2025

ACUITY INC.

By:/s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202506260001144215false00011442152025-06-262025-06-26

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): June 26, 2025

ACUITY INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) Acuity Brands, Inc. (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On June 26, 2025, Acuity Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended May 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated June 26, 2025.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: June 26, 2025

ACUITY INC.

By:/s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202504030001144215false00011442152025-04-032025-04-03

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): April 3, 2025

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On April 3, 2025, Acuity Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended February 28, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated April 3, 2025.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: April 3, 2025

ACUITY INC.

By:/s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202501080001144215false00011442152025-01-082025-01-08

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): January 8, 2025

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On January 8, 2025, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended November 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated January 8, 2025.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: January 8, 2025

ACUITY BRANDS, INC.

By:/s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202410010001144215false00011442152024-10-012024-10-01

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): October 1, 2024

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On October 1, 2024, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter and year ended August 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated October 1, 2024.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: October 1, 2024

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202406270001144215false00011442152024-06-272024-06-27

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): June 27, 2024

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On June 27, 2024, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended May 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated June 27, 2024.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: June 27, 2024

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202404030001144215false00011442152024-04-032024-04-03

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): April 3, 2024

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On April 3, 2024, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended February 29, 2024. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated April 3, 2024.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: April 3, 2024

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202401090001144215false00011442152024-01-092024-01-09

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): January 9, 2024

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On January 9, 2024, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended November 30, 2023. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated January 9, 2024.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: January 9, 2024

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202310040001144215false00011442152023-10-042023-10-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): October 4, 2023

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On October 4, 2023, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter and year ended August 31, 2023. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated October 4, 2023.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: October 4, 2023

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202306290001144215false00011442152023-06-292023-06-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): June 29, 2023

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading Symbol(s)Name of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On June 29, 2023, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended May 31, 2023. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated June 29, 2023.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: June 29, 2023

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202304040001144215false00011442152023-04-042023-04-04

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): April 4, 2023

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309-7676 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On April 4, 2023, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended February 28, 2023. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated April 4, 2023.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: April 4, 2023

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202301090001144215false00011442152023-01-092023-01-09

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): January 9, 2023

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware001-1658358-2632672 (State or other jurisdiction of incorporation or organization)(Commission File Number)(IRS. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 1200, Atlanta, Georgia 30309-7676 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code)

(Former Name or Former Address, if Changed Since Last Report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On January 9, 2023, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended November 30, 2022. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated January 9, 2023.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: January 9, 2023

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202209290001144215false00011442152022-09-292022-09-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): September 29, 2022

Commission file number 001-16583.

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware 58-2632672 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 2300, Atlanta, Georgia 30309-7676 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On October 4, 2022, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter and year ended August 31, 2022. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. Effective September 29, 2022, the Board of Directors (the “Board”) of Acuity Brands, Inc. (the “Company”) increased the size of the Board from eleven to twelve members and elected Michael J. Bender to the Board. Mr. Bender, whose term will expire at the next annual meeting of stockholders, was also appointed to the Audit and Governance Committees. Mr. Bender, age 60, served as the President and Chief Executive Officer of Eyemart Express, LLC (“Eyemart”) from January 2018 to April 2022, having previously served as President of Eyemart from September 2017 to January 2018. He was the Chief Operating Officer of Global eCommerce of Walmart, Inc. from July 2014 to February 2017 following service in other executive-level positions, including Executive Vice President and President of West Business Unit from 2011 to 2014, Senior Vice President, Mountain Division from 2010 to 2011, and Vice President and General Manager of Southwest Region from 2009 to 2010. Mr. Bender held various senior level positions at Cardinal Health, Inc. from 2003 to 2007, including President and General Manager, Retail and Alternate Care. Prior to that he served as Vice President of Store Operations at L-Brands, Inc.-Victoria Secret Stores from 1999 to 2002, and in a variety of sales, finance, and operating roles at PepsiCo, Inc. from 1984 to 1999. Mr. Bender serves on the board of directors of Kohl's Corporation. There are no arrangements between Mr. Bender and any other person pursuant to which he was selected as a director, nor are there any transactions to which the Company is or was a participant and in which Mr. Bender has a material interest subject to disclosure under Item 404(a) of Regulation S-K. No family relationships exist between Mr. Bender and any of the Company's directors or executive officers. Mr. Bender will participate on a pro rata basis in

ayi-202206290001144215false00011442152022-06-292022-06-29

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): June 29, 2022

Commission file number 001-16583.

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware 58-2632672 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 2300, Atlanta, Georgia 30309-7676 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On June 30, 2022, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended May 31, 2022. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers. On June 29, 2022, the Board of Directors (the “Board”) of Acuity Brands, Inc. (the “Company”) increased the size of the Board from ten to eleven members and elected Marcia J. Avedon, Ph.D. to the Board with effect from June 29, 2022. Dr. Avedon, whose term will expire at the next annual meeting of stockholders, was also appointed to the Governance Committee and the Compensation and Management Development Committee. Dr. Avedon, age 60, is the founder and has served as the CEO of Avedon Advisory LLC since April 2022. She previously served as Executive Vice President, Chief Human Resources, Marketing and Communications Officer for Trane Technologies PLC from March 2020 to April 2022. Dr. Avedon served as Senior Vice President of Human Resources, Communications and Corporate Affairs for Ingersoll Rand from February 2007 to March 2020. Prior to that, she served as Senior Vice President and Chief Human Resources Officer and Vice President, Talent Management at Merck from January 2002 to December 2006 and at Honeywell International from 1995 to 2002. Early career positions in human resources were held at Anheuser-Busch Companies, Inc. and as a consultant with Booz, Allen & Hamilton, Inc. Dr. Avedon serves on the board of directors of Generac Power Systems. There are no arrangements between Dr. Avedon and any other person pursuant to which Dr. Avedon was selected as a director, nor are there any transactions to which the Company is or was a participant and in which Dr. Avedon has a material interest subject to disclosure under Item 404(a) of Regulation S-K. No family relationships exist between Dr. Avedon and any of the Company's directors or executive officers. Dr. Avedon will participate on a pro rata basis in the standard non-employee director compensation arrangements described under “Compensation of Directors” in the Company’s fiscal 2021 proxy state

ayi-202204050001144215false00011442152022-04-052022-04-05

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): April 5, 2022

Commission file number 001-16583.

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware 58-2632672 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 2300, Atlanta, Georgia 30309-7676 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On April 5, 2022, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended February 28, 2022. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibit 99.1 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated April 5, 2022.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Date: April 5, 2022

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202201070001144215false00011442152022-01-072022-01-07

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): January 7, 2022

Commission file number 001-16583.

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware 58-2632672 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 2300, Atlanta, Georgia 30309-7676 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On January 7, 2022, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal quarter ended November 30, 2021. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. The information contained in this paragraph, as well as Exhibits 99.1 and 99.2 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated January 7, 2022.

99.2Investor Presentation.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Date: January 7, 2022

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3

ayi-202110060001144215false00011442152021-10-062021-10-06

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): October 6, 2021

Commission file number 001-16583.

ACUITY BRANDS, INC.

(Exact name of registrant as specified in its charter)

Delaware 58-2632672 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification Number)

1170 Peachtree Street, N.E., Suite 2300, Atlanta, Georgia 30309-7676 (Address of principal executive offices) (404) 853-1400 (Registrant’s telephone number, including area code) None (Former Name or Former Address, if Changed Since Last Report) Securities registered pursuant to Section 12(b) of the Act:

Title of each classTrading symbolName of each exchange on which registered Common stock, $0.01 par value per shareAYINew York Stock Exchange

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐    Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Indicate by check mark whether the Registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02. Results of Operations and Financial Condition. On October 6, 2021, Acuity Brands, Inc. (“we,” “our,” “us,” “the Company,” or similar references) issued a press release containing information about our results of operations for our fiscal fourth quarter and year ended August 31, 2021. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K, which is incorporated herein by reference. An investor presentation, which includes supplemental information relating to the Company's fourth quarter and fiscal year earnings, is furnished as Exhibit 99.2 to this Current Report on Form 8-K. The information contained in this paragraph, as well as Exhibits 99.1 and 99.2 referenced herein, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended. Item 9.01. Financial Statements and Exhibits.

(d)Exhibits

99.1Press Release dated October 6, 2021.

99.2Investor Presentation.

104Cover Page Interactive Data File (embedded within the inline XBRL document).

2

Signatures Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. Date: October 6, 2021

ACUITY BRANDS, INC.

By: /s/ Karen J. Holcom Karen J. Holcom Senior Vice President and Chief Financial Officer

3