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MILLS DIANNE S

Disclosed activity across 1 company

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73949
SEC CIK
0001804778

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
ACUITY INC. (DE)AYI · Entity 2588SVP & Chief HR OfficerOctober 24, 2025October 27, 2025

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

ACUITY INC. (DE)

Report date October 24, 2025 · Filed October 27, 2025

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect15,293 Ending reported balance After 2025-10-24 transaction · row 2
2 source rows · reconciled sequence

Row 1 · 2025-10-24 · Grant · Acquired 6,322 · Balance 18,179

F1: The shares were issued upon the achievement and subsequent vesting of performance stock units (PSUs). These PSUs were granted on October 24, 2022, with a three-year performance period that began September 1, 2022, and ended August 31, 2025. On October 23, 2025, the Compensation and Management Development Committee certified the achievement of the performance measures and authorized the issuance of common stock underlying the PSUs on their vesting date, October 24, 2025.

Row 2 · 2025-10-24 · Tax withholding · Disposed 2,886 · Balance 15,293

F2: The transactions report the withholding of stock to cover tax liability associated with the vesting of restricted stock units or PSUs held by the reporting person.

Filing footnotes · ownership attribution and instrument terms

F1: The shares were issued upon the achievement and subsequent vesting of performance stock units (PSUs). These PSUs were granted on October 24, 2022, with a three-year performance period that began September 1, 2022, and ended August 31, 2025. On October 23, 2025, the Compensation and Management Development Committee certified the achievement of the performance measures and authorized the issuance of common stock underlying the PSUs on their vesting date, October 24, 2025.

F2: The transactions report the withholding of stock to cover tax liability associated with the vesting of restricted stock units or PSUs held by the reporting person.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 24, 2025 Filed Oct 27, 2025 20:25 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 2,886 $370.34 $1,068,801.24
Disclosure

SEC source: 0001804778-25-000004 · wk-form4_1761596697.xml · nonDerivative · entry 2

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,293

F2 · shares: The transactions report the withholding of stock to cover tax liability associated with the vesting of restricted stock units or PSUs held by the reporting person.

Read SEC document
October 24, 2025 Filed Oct 27, 2025 20:25 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 6,322 $0.00 $0.00
Disclosure

SEC source: 0001804778-25-000004 · wk-form4_1761596697.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,179

F1 · shares: The shares were issued upon the achievement and subsequent vesting of performance stock units (PSUs). These PSUs were granted on October 24, 2022, with a three-year performance period that began September 1, 2022, and ended August 31, 2025. On October 23, 2025, the Compensation and Management Development Committee certified the achievement of the performance measures and authorized the issuance of common stock underlying the PSUs on their vesting date, October 24, 2025.

Read SEC document
October 26, 2024 Filed Oct 29, 2024 20:13 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 216 $303.09 $65,467.44
Disclosure

SEC source: 0001144215-24-000095 · wk-form4_1730232803.xml · nonDerivative · entry 3

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,857

Read SEC document
October 25, 2024 Filed Oct 29, 2024 20:13 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 2,078 $303.09 $629,821.02
Disclosure

SEC source: 0001144215-24-000095 · wk-form4_1730232803.xml · nonDerivative · entry 2

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,073

F2 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock, restricted stock units or performance stock units held by the reporting person.

Read SEC document
October 25, 2024 Filed Oct 29, 2024 20:13 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 4,830 $0.00 $0.00
Disclosure

SEC source: 0001144215-24-000095 · wk-form4_1730232803.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,151

F1 · shares: The shares being reported represent the number of shares issued upon the achievement and subsequent vesting of performance stock units (PSUs). These PSUs were granted on October 25, 2021 with a three-year performance period that commenced September 1, 2021 and ended August 31, 2024. On October 24, 2024, the Compensation and Management Development Committee certified the achievement of the performance measure and authorized the subsequent issuance of common stock underlying the PSUs.

Read SEC document
October 24, 2024 Filed Oct 28, 2024 20:17 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 201 $298.97 $60,092.97
Disclosure

SEC source: 0001144215-24-000093 · wk-form4_1730146638.xml · nonDerivative · entry 3

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,321

F2 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person.

Read SEC document
October 24, 2024 Filed Oct 28, 2024 20:17 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 183 $298.97 $54,711.51
Disclosure

SEC source: 0001144215-24-000093 · wk-form4_1730146638.xml · nonDerivative · entry 2

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,522

F2 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person.

Read SEC document
October 24, 2024 Filed Oct 28, 2024 20:17 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 1,406 $0.00 $0.00
Disclosure

SEC source: 0001144215-24-000093 · wk-form4_1730146638.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,705

F1 · shares: The restricted stock unit awards were issued pursuant to the Amended and Restated Acuity Brands, Inc. 2012 Omnibus Stock Incentive Compensation Plan. The shares vest in equal annual installments over a three-year period and will become fully vested on October 24, 2027.

Read SEC document
March 02, 2024 Filed Mar 5, 2024 22:01 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 255 $251.61 $64,160.55
Disclosure

SEC source: 0001144215-24-000037 · wk-form4_1709676059.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,299

F1 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person. Such withholding is required under the Company's standard processes for such events.

Read SEC document
January 18, 2024 Filed Jan 19, 2024 21:13 UTC ACUITY INC. (DE) AYI · Entity 2588 SaleCommon Stock 2,146 $224.23 $481,197.58
Disclosure

SEC source: 0001144215-24-000011 · wk-form4_1705698787.xml · nonDerivative · entry 3

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,554

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $223.56 to $224.55, inclusive. The Reporting Person undertakes to provide to Acuity Brands, Inc., any security holder of Acuity Brands, Inc., or the staff of the Security and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein.

Read SEC document
January 18, 2024 Filed Jan 19, 2024 21:13 UTC ACUITY INC. (DE) AYI · Entity 2588 SaleCommon Stock 1,924 $225.08 $433,053.92
Disclosure

SEC source: 0001144215-24-000011 · wk-form4_1705698787.xml · nonDerivative · entry 2

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,700

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $224.66 to $225.38, inclusive. The Reporting Person undertakes to provide to Acuity Brands, Inc., any security holder of Acuity Brands, Inc., or the staff of the Security and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein.

Read SEC document
January 18, 2024 Filed Jan 19, 2024 21:13 UTC ACUITY INC. (DE) AYI · Entity 2588 SaleCommon Stock 1,930 $226.12 $436,411.60
Disclosure

SEC source: 0001144215-24-000011 · wk-form4_1705698787.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,624

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.67 to $226.39, inclusive. The Reporting Person undertakes to provide to Acuity Brands, Inc., any security holder of Acuity Brands, Inc., or the staff of the Security and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth herein.

Read SEC document
October 26, 2023 Filed Oct 27, 2023 21:36 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 1,431 $159.11 $227,686.41
Disclosure

SEC source: 0001144215-23-000104 · wk-form4_1698442594.xml · nonDerivative · entry 2

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,554

F2 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock, restricted stock units or performance stock units held by the reporting person.

Read SEC document
October 26, 2023 Filed Oct 27, 2023 21:36 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 4,382 $0.00 $0.00
Disclosure

SEC source: 0001144215-23-000104 · wk-form4_1698442594.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,985

F1 · shares: The shares being reported represents the number of shares issued upon the achievement and subsequent vesting of performance stock units (PSUs). These PSUs were granted on October 26, 2020 with a three-year performance period that commenced September 1, 2020 and ended August 31, 2023. On October 24, 2023, the Compensation and Management Development Committee certified the achievement of the performance measure and authorized the subsequent issuance of common stock underlying the PSUs.

Read SEC document
October 25, 2023 Filed Oct 26, 2023 21:45 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 197 $159.62 $31,445.14
Disclosure

SEC source: 0001144215-23-000095 · wk-form4_1698356738.xml · nonDerivative · entry 3

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,603

F2 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person.

Read SEC document
October 24, 2023 Filed Oct 26, 2023 21:45 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 183 $162.30 $29,700.90
Disclosure

SEC source: 0001144215-23-000095 · wk-form4_1698356738.xml · nonDerivative · entry 2

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,800

F2 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person.

Read SEC document
October 24, 2023 Filed Oct 26, 2023 21:45 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 2,465 $0.00 $0.00
Disclosure

SEC source: 0001144215-23-000095 · wk-form4_1698356738.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,983

F1 · shares: The restricted stock unit awards were issued pursuant to the Amended and Restated Acuity Brands, Inc. 2012 Omnibus Stock Incentive Compensation Plan. The shares vest in equal annual installments over a three-year period and will become fully vested on October 24, 2026.

Read SEC document
March 02, 2023 Filed Mar 3, 2023 21:14 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 257 $195.25 $50,179.25
Disclosure

SEC source: 0001144215-23-000045 · wf-form4_167787804148502.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,518

F1 · shares: The transaction(s) report(s) the withholding of shares of common stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person. Such withholding is required under the Company's standard processes for such events.

Read SEC document
October 26, 2022 Filed Oct 27, 2022 21:22 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 134 $181.84 $24,366.56
Disclosure

SEC source: 0001144215-22-000111 · wf-form4_166690571220778.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,775

F1 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock units held by the reporting person. Such withholding is required under the Company's standard processes for such events.

F2 · balance_after: The total direct shares owned includes 6,907 time-vesting restricted stock units.

Read SEC document
October 25, 2022 Filed Oct 26, 2022 21:04 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 197 $184.76 $36,397.72
Disclosure

SEC source: 0001144215-22-000105 · wf-form4_166681824176275.xml · nonDerivative · entry 2

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,909

F2 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock units held by the reporting person. Such withholding is required under the Company's standard processes for such events.

F3 · balance_after: The total direct shares owned includes 7,455 time-vesting restricted stock units.

Read SEC document
October 24, 2022 Filed Oct 26, 2022 21:04 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 2,251 $0.00 $0.00
Disclosure

SEC source: 0001144215-22-000105 · wf-form4_166681824176275.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,106

F1 · shares: The shares being reported result from the grant of a restricted stock unit award pursuant to the Amended and Restated Acuity Brands, Inc. 2012 Omnibus Stock Incentive Compensation Plan. The restricted stock units vest in equal annual installments over a three-year period and will become fully vested on October 24, 2025.

Read SEC document
March 02, 2022 Filed Mar 3, 2022 21:32 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 256 $189.20 $48,435.20
Disclosure

SEC source: 0001144215-22-000043 · wf-form4_164634311631185.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,855

F1 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person. Such withholding is required under the Company's standard processes for such events.

F2 · balance_after: The total direct shares owned includes 6,010 time-vesting restricted stock units.

Read SEC document
October 26, 2021 Filed Oct 27, 2021 21:02 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 134 $205.85 $27,583.90
Disclosure

SEC source: 0001144215-21-000100 · wf-form4_163536853717872.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,111

F1 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person. Such withholding is required under the Company's standard processes for such events.

F2 · balance_after: The total direct shares owned includes 6,985 time-vesting restricted stock units.

Read SEC document
October 25, 2021 Filed Oct 26, 2021 22:52 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 2,416 $0.00 $0.00
Disclosure

SEC source: 0001144215-21-000094 · wf-form4_163528871271754.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,245

F1 · shares: The shares being reported result from the grant of a restricted stock unit award pursuant to the Amended and Restated Acuity Brands, Inc. 2012 Omnibus Stock Incentive Compensation Plan. The restricted stock units vest in equal annual installments over a three-year period and will become fully vested on October 25, 2024.

F2 · balance_after: The total direct shares owned includes 7,532 time-vesting restricted stock units.

Read SEC document
March 02, 2021 Filed Mar 3, 2021 23:58 UTC ACUITY INC. (DE) AYI · Entity 2588 Tax withholdingCommon Stock 262 $126.37 $33,108.94
Disclosure

SEC source: 0001144215-21-000034 · wf-form4_161481587256564.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,829

F1 · shares: The transaction(s) report(s) the withholding of stock to cover tax liability associated with the vesting of restricted stock or restricted stock units held by the reporting person. Such withholding is required under the Company's standard processes for such events.

F2 · balance_after: The total direct shares owned includes 5,116 time-vesting restricted stock units.

Read SEC document
October 26, 2020 Filed Oct 27, 2020 23:05 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 2,191 $0.00 $0.00
Disclosure

SEC source: 0001144215-20-000133 · wf-form4_160383990960179.xml · nonDerivative · entry 1

MILLS DIANNE S · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,091

F1 · shares: This restricted stock unit vests in equal annual installments over a four-year period and will become fully vested on October 26, 2024.

F2 · balance_after: The total direct shares owned includes 6,091 time-vesting restricted stock units.

Read SEC document
March 02, 2020 Filed Mar 4, 2020 21:41 UTC ACUITY INC. (DE) AYI · Entity 2588 GrantCommon Stock 3,900 $0.00 $0.00
Disclosure

SEC source: 0001144215-20-000037 · wf-form4_158335807084207.xml · nonDerivative · entry 1

MILLS DIANNE B · CIK 0001804778 · SVP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,900

F1 · shares: The shares being reported result from the award of restricted stock units pursuant to the Amended and Restated Acuity Brands, Inc. 2012 Omnibus Stock Incentive Compensation Plan.

F2 · shares: This restricted stock unit vests in equal annual installments over a four-year period and will become fully vested on March 2, 2024.

F3 · balance_after: The total direct shares owned includes 3,900 time-vesting restricted stock units.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.