Document:

Exhibit 10.4

 Exhibit 10.4 
 CHANGE IN CONTROL AGREEMENT 
 THIS AGREEMENT (the
“Agreement”) made as of the 1st of May, 2010, between RGC Resources, Inc. (“the Corporation”) and Howard T. Lyon (“Executive”), 
 - W I T N E S S E T H - 
 WHEREAS the Corporation desires for the Executive to be
able to perform his executive duties and functions on an impartial and objective basis in the event of activities preceding, associated with, or resulting from a change in control of the Corporation as hereinafter defined (“Change in
Control”); 
 NOW, THEREFORE, the parties agree as follows: 
 1. TERM. This Agreement is effective as of the date hereof and shall terminate, except to the extent that any obligation remains
unpaid as of such time, upon the earliest of the following: 
 (i) the termination of the Executive’s
employment with the Corporation prior to a Change in Control; 
 (ii) two years from the date of a Change in
Control; or 
 (iii) May 1, 2015, but only if no Change in Control has occurred as of such date. 

2. CHANGE IN CONTROL. For purposes of the Agreement, a Change in Control shall be deemed to have occurred if (i) any person
(individual, corporation, partnership or other entity) is or becomes the beneficial owner, directly or indirectly, of securities of the Corporation representing 50 percent or more of the combined voting power of the outstanding securities ordinarily
(and apart from rights accruing under special circumstances) having the right to vote at elections of directors (“Voting Securities”), (ii) in the event that following a merger, recapitalization, reorganization, consolidation or sale
of assets by the Corporation, or any combination thereof, any person becomes the beneficial owner, directly or indirectly, of 50% or more of the Voting Securities of the surviving entity, or (iii) the shareholders of the Corporation shall
liquidate or sell substantially all of its assets. The first day upon which there exists a Change in Control shall be referred to herein as the “Operative Date.” 
  

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 3. TERMINATION FOLLOWING CHANGE IN CONTROL. If a Change in Control shall have
occurred, the Executive will be entitled to the benefits provided in Paragraph 4 hereof if, within the two-year period beginning on the Operative Date, the Executive’s employment with the Corporation (hereinafter defined) is terminated unless
such termination is (a) because of his death, (b) by the Corporation for Cause or Disability, or (c) by the Executive other than for Good Reason, all as hereinafter more particularly defined. 
 (i) Disability. If, as a result of the Executive’s incapacity due to physical or mental illness, he shall have
been absent from his duties with the Corporation on a full-time basis for six (6) months and within thirty (30) days after written notice of termination is given he shall not have returned to the full-time performance of his duties, the
Corporation may terminate the Agreement for “Disability.” 
 (ii) Cause. The Corporation may
terminate the Executive’s employment for Cause. For purposes of the Agreement, the Corporation shall have “Cause” to terminate the Executive’s employment hereunder upon (A) the willful and continued failure by the Executive
to substantially perform his duties with the Corporation (other than any such failure resulting from his incapacity due to physical or mental illness) after a demand for substantial performance is delivered to the Executive by the Corporation which
specifically identifies the manner that the Executive has not substantially performed his duties or (B) the willful engaging by the Executive in gross misconduct materially and demonstrably injurious to the Corporation. For purposes of this
paragraph, no act, or failure to act, on the Executive’s part shall be considered “willful” unless done, or omitted to be done, by him not in good faith and without reasonable belief that his action or omission was in the best
interests of the Corporation. Notwithstanding the foregoing, the Executive shall not be deemed to have been terminated for Cause based upon clauses (A) or (B) above unless and until there shall have been delivered to him a copy of a
resolution, duly adopted by the affirmative vote of not less than two-thirds of the entire membership of the Board at meeting of the Board called and held for the purpose (after reasonable notice to the Executive and an opportunity for him, together
with his counsel, to be heard before the Board), finding that in the good faith opinion of the Board the Executive was guilty of conduct set forth above in clauses (A) or (B) and specifying the particulars thereof in detail. 
 (iii) Good Reason. The Executive may terminate his employment for Good Reason within ninety (90) days of the
occurrence of any of the events specified below. For purposes of the Agreement, “Good Reason” shall mean: 
 (A) Without the Executive’s express written consent, the assignment to him of any duties materially inconsistent with his duties and responsibilities with the Corporation immediately prior to a Change in Control; 
 (B) A reduction by the Corporation in the Executive’s annual base compensation below his total base compensation
applicable to the 12 months preceding the Operative Date or as increased after such date; 
  

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 (C) The failure by the Corporation to provide the Executive with benefits
whose aggregate value is at least as favorable as the aggregate value of benefits enjoyed by him under any thrift, incentive or compensation plan, or any pension, life insurance, health and accident or disability plan in which is he participating at
the time of a Change in Control, or the taking of any action by the Corporation which would adversely affect his participation in or materially reduce his benefits under any of such plans at the time of a Change in Control, unless such reduction
relates to a reduction in benefits applicable to all employees generally; 
 (D) The failure by the Corporation
to provide the Executive with any other material fringe benefit enjoyed by him at the time of the Change in Control; 
 (E) Any purported termination of the Executive’s employment which is not effected pursuant to a Notice of Termination satisfying the requirements of subparagraph (iv) below (and, if applicable, subparagraph (ii) above) and,
for purposes of the Agreement, no such purported termination shall be effective; or 
 (F) Breach by the
Corporation of its obligations under Paragraph 5 of this Agreement. 
 If any of the events occur which would entitle the
Executive to terminate his employment for Good Reason hereunder and he does not so exercise his right to terminate his employment, any such failure shall not operate to waive his right to terminate his employment for that or any subsequent action or
actions, whether similar or dissimilar, which would constitute Good Reason. 
 (iv) Notice of Termination.
Any termination by the Corporation pursuant to subparagraphs (i) or (ii) above or by the Executive pursuant to subparagraph (iii) above shall be communicated by written Notice of Termination. For purposes of the Agreement, a
“Notice of Termination” shall mean a notice which shall indicate the specific termination provision in the Agreement relied upon and shall set forth in reasonable detail the facts and circumstances claimed to provide a basis for
termination of the Executive’s employment under the provision so indicated. 
 (v) Date of
Termination. “Date of Termination” shall mean (a) if the Agreement is terminated for Disability, thirty (30) days after Notice of Termination is given (provided that the Executive shall not have returned to the performance of
his duties on a full-time basis during such thirty-day period), (b) if his employment is terminated pursuant to subparagraph (iii) above, the date specified in the Notice of Termination, and (c) if his employment is terminated for any
other reason, the date on which a Notice of Termination is given. Notwithstanding any provision herein to the contrary, the Date of Termination shall not occur, and the Executive’s employment with the Corporation shall not be deemed to have
occurred, until the Executive shall have a Separation from Service. The following definitions shall apply for purposes of this Agreement: 
 “Code” shall mean the Internal Revenue Code of 1986, as amended from time to time. A reference to any section or provision of the Code shall also be deemed to be a reference to any applicable
regulations and rulings thereunder, as well as to comparable provisions of future laws. 
  

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 “Leave of Absence” means a military leave, sick leave or other
bona fide leave of absence of the Executive which does not exceed six months (or such longer period for which the Executive retains a right to reemployment with the Corporation or a Related Entity under an applicable statute or by contract), but
only if there is a reasonable expectation that the Executive will return to perform services for the Corporation or a Related Entity. 
 “Related Entity” means any entity which is aggregated with the Corporation pursuant to Section 414(b) or 414(c) of the Code or would be so aggregated if the language “at least 50
percent” were used instead of “at least 80 percent” each place it appears in Section 1563(a)(1), (2) and (3) of the Code and Treasury Regulations Section 1.414(c)-2. 
 “Separation from Service” means the Executive’s separation from service (as such term is used for purposes of
Section 409A of the Code) with the Corporation and any Related Entities. The Executive shall be deemed to have a Separation from Service on a date only if the Corporation and the Executive reasonably anticipate that (a) no further services
will be performed for the Corporation or any Related Entities after such date or (b) the level of bona fide services the Executive will perform for the Corporation or any Related Entities after such date (whether as an employee or as an
independent contractor) will permanently decrease to no more than 20% of the average level of bona fide services performed (whether as an employee or as an independent contractor) over the immediately preceding 36-month period (or the full period of
services to the Corporation and any Related Entities if the Executive has then been providing services to the Corporation and any Related Entities for less than 36 months). For purposes of this section, for periods during which the Executive is on a
paid Leave of Absence and has not otherwise terminated employment, the Executive shall be treated as providing bona fide services at a level equal to the level of services that he would have been required to perform to receive the compensation paid
with respect to such Leave of Absence. Also for purposes of this section, periods during which the Executive is on an unpaid Leave of Absence and has not otherwise terminated employment shall be disregarded (including for purposes of determining the
36-month, or shorter, period). 
 4. COMPENSATION UPON TERMINATION. Upon termination of the Executive’s employment
within twenty-four (24) months following a Change in Control of the Corporation, unless such termination is because of the Executive’s death, or by the Corporation for Cause or Disability or by the Executive other than for Good
Reason, the Corporation shall pay to the Executive the following: 
 (i) The Corporation shall pay the Executive
his full salary (whether such salary has been paid by the Corporation or by any of its subsidiaries) through the Date of Termination at the rate in effect at the time Notice of Termination is given and all other unpaid amounts, if any, to which the
Executive is entitled as of the Date of Termination under any plan or other arrangement of the Company, at the time such payments are due (and in any event within 90 days after the Separation from Service); 
  

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 (A) The Corporation shall pay to the Executive an amount equal to 1.5
multiplied by the Executive’s annualized includable compensation for the base period, within the meaning of Section 280G(d)(1) of the Code, provided, however, that if any of such payment is or will be subject to the excise tax imposed by
Section 4999 of the Code or any similar tax that may hereafter be imposed (“Excise Tax”), such payment shall be reduced to a smaller amount, even to zero, which smaller amount shall be the largest amount payable under this paragraph
that would not be subject in whole or in part to the Excise Tax after considering all other payments to the Executive required to be considered under Sections 4999 or 280G of the Code. Such payment shall be referred to as the “Severance
Payment.” The Severance Payment shall be made in a lump sum within 90 days after the Separation from Service. 
 (B) In the event that the Severance Payment is subsequently determined to be less than the amount actually paid hereunder, the Executive shall repay the excess to the Corporation at the time that the proper amount is finally determined,
plus interest on the amount of such repayment at the Applicable Federal Rate. In the event that the Severance Payment is determined to exceed the amount actually paid hereunder, the Corporation shall pay the Executive such difference plus interest
on the amount of such additional payment at the Applicable Federal Rate at the time that the amount of such difference is finally determined. 
 (C) In the event that the amount of the Severance Payment exceeds or is less than the amount initially paid, such difference shall constitute a loan by the Corporation to the Executive, or by the
Executive to the Corporation, as the case may be, payable on the fifth (5th) day after demand (together with interest at the Applicable Federal Rate). 
 (D) The amount of any payment provided for in this subparagraph shall not be reduced, offset or subject to recovery by the Company or the Company’s Successor by reason of any compensation earned by
the Executive as the result of employment by another Corporation after the Date of Termination, or otherwise. 
 (ii) The Corporation shall also pay to the Executive all legal fees and related expenses incurred by the Executive in connection with this Agreement, whether or not the Executive prevails (including, without limitation, all such fees and
expenses, if any, incurred in contesting or disputing any such termination or in seeking to obtain or enforce any right or benefit provided by this Agreement). 
 (iii) The Corporation shall maintain in full force and effect, for the Executive’s continued benefit until the earlier
of (A) the death of the Executive; (B) the Executive’s commencement of full-time employment with a new Corporation; or (C) twenty-four (24) months following the Operative Date, all life insurance, medical, health and accident,
and disability plans, programs or arrangements in which the Executive was entitled to participate immediately prior to the Operative Date, provided that the Executive’s continued participation is possible under the general terms and provisions
of such plans and programs. In the event that the

  

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Executive’s participation in any such plan or program is barred, the Company shall arrange to provide the Executive with benefits substantially similar to those which the Executive is
entitled to receive under such plans and programs. In the case of any insurance provided the Executive pursuant to this subparagraph (iii), each premium therefor shall be paid after, but no later than 30 days after, the Corporation’s receipt of
the invoice for such premium. No coverage shall be provided to the Executive under a self-insured medical plan of the Corporation after the Separation from Service; provided that such coverage may be provided during the period of time during which
the Executive would be entitled to continuation coverage under such plan pursuant to Section 4980A of the Code if the Executive elected such continuation coverage and paid the applicable premiums. Except for coverage permitted by the preceding
sentence, no benefits shall be provided pursuant to this subparagraph (iii) other than through the purchase of insurance by the Corporation. 
 (iv) The Executive shall not be required to mitigate the amount of any payment provided under the Agreement by seeking other employment or otherwise. It is specifically understood that any compensation
the Executive receives from the Corporation or any other person for services rendered prior to or after termination of employment, such as a payment under any deferred compensation plan maintained by the Corporation, will not reduce or offset the
benefits to which he is entitled hereunder. 
 (E) The Agreement shall inure to the benefit of and be enforceable
by the Executive’s personal or legal representatives, executors, administrators, successors, heirs, distributees, divisees and legatees. If the Executive should die while any amounts would still be payable to him hereunder if he had continued
to live, all such amounts, unless otherwise provided herein, shall be paid in accordance with the terms of the Agreement to his devisee, legatee, or other designee or, if there be no such designee, to his estate. 
 5. AGREEMENT BINDING ON SUCCESSORS. The Corporation will require any successor (whether direct or indirect, by purchase, merger,
share exchange, consolidation or otherwise) to all or substantially all of the business and/or assets of the Corporation, to expressly assume and agree to perform this Agreement. Failure of the Corporation to obtain such agreement prior to or
simultaneously with a Change of Control shall be a breach of the Agreement which shall entitle the Executive to terminate his employment for Good Reason under Paragraph 3(iii) on or after the Operative Date, except that, for purposes of implementing
the foregoing, the date of his Notice of Termination shall be deemed the Date of Termination. 
 6. NOTICE. For the
purposes of the Agreement, notices and all other communications provided for in the Agreement shall be in writing and shall be deemed to have been duly given on the date hand delivered or the date mailed by United States registered mail, return
receipt requested, postage prepaid, addressed to the Executive at his residence address and to the Corporation directed to the attention of the Chief Executive Officer of the Corporation, or to such other address as either party may have furnished
to the other in writing in accordance herewith, except that notices of change of address shall be effective only upon receipt. 
  

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 7. MODIFICATION AND WAIVER. No provisions of the Agreement may be modified, waived or
discharged unless such waiver, modification or discharge is agreed to in writing signed by the Executive and the Corporation. No waiver by any party hereto at any time or the breach by the other party hereto or of compliance with any condition or
provision of the Agreement to be performed by such other party shall be deemed a waiver of similar or dissimilar provisions or conditions at the same or at any prior or subsequent time. No agreements of representations, oral or otherwise, express or
implied, with respect to the subject matter hereof have been made by either party which are not set forth expressly in the Agreement. The validity, interpretation, construction and performance of the Agreement shall be governed by the laws of the
Commonwealth of Virginia. 
 8. VALIDITY. The invalidity or unenforceability of any provisions of the Agreement shall not
affect the validity or enforceability of any other provisions of the Agreement and such other provisions shall remain in full force and effect. 
 9. COUNTERPARTS AND GOVERNING LAW. The Agreement may be executed in one or more counterparts, each of which shall be deemed to be an original but all of which together will constitute one and the
same instrument. The Agreement shall be governed by the laws of the Commonwealth of Virginia, excepting its principles of conflict of laws. 
 IN WITNESS WHEREOF, the parties have executed the Agreement as of the date first above written. 
  

									
	RGC Resources, Inc.	 		 	Howard T. Lyon
				
	By:	 	/s/ John B. Williamson, III	 		 	/s/ Howard T. Lyon
		 	Its: Chairman, President and CEO	 		 		 	

  

 – 7 –Amended and Restated to 2005 Supplemental Deferred Savings Plan

 Exhibit 10(c) 
 ACUITY BRANDS, INC. 
 2005 SUPPLEMENTAL DEFERRED
SAVINGS PLAN 
 (As Amended and Restated as of January 1, 2010) 

 ACUITY BRANDS, INC. 
 2005 SUPPLEMENTAL DEFERRED SAVINGS PLAN 
 TABLE OF
CONTENTS 
  

							
	ARTICLE I — INTRODUCTION AND ESTABLISHMENT	  	1
	ARTICLE II — DEFINITIONS	  	2
		 	 2.1
	 	Account	  	2
		 	 2.2
	 	Annual Valuation Date	  	2
		 	 2.3
	 	Beneficiary	  	2
		 	 2.4
	 	Business Unit	  	2
		 	 2.5
	 	Change in Capitalization	  	2
		 	 2.6
	 	Change in Control	  	2
		 	 2.7
	 	Code	  	3
		 	 2.8
	 	Company	  	3
		 	 2.9
	 	Compensation	  	3
		 	 2.10
	 	Deferral Subaccount	  	4
		 	 2.11
	 	Deferred Restricted Stock Subaccount	  	4
		 	 2.12
	 	Effective Date	  	4
		 	 2.13
	 	Election Form	  	4
		 	 2.14
	 	Employer	  	4
		 	 2.15
	 	ERISA	  	4
		 	 2.16
	 	Executive	  	4
		 	 2.17
	 	Fair Market Value	  	4
		 	 2.18
	 	Financial Hardship	  	4
		 	 2.19
	 	Fiscal Year	  	4
		 	 2.20
	 	In-Service Account	  	5
		 	 2.21
	 	Matching Subaccount	  	5
		 	 2.22
	 	Participant	  	5
		 	 2.23
	 	Performance-Based Plan	  	5
		 	 2.24
	 	Plan	  	5
		 	 2.25
	 	Plan Administrator	  	5
		 	 2.26
	 	Plan Year	  	5
		 	 2.27
	 	Prime Rate	  	5
		 	 2.28
	 	Prior Plan	  	5
		 	 2.29
	 	Prior Plan Transfer Account	  	5
		 	 2.30
	 	Retirement	  	5
		 	 2.31
	 	Retirement Account	  	5
		 	 2.32
	 	Section 409A	  	5
		 	 2.33
	 	Shares	  	6
		 	 2.34
	 	Subsidiary	  	6
		 	 2.35
	 	Supplemental Subaccount	  	6
		 	 2.36
	 	Termination for Cause	  	6
		 	 2.37
	 	Termination of Service	  	6
		 	 2.38
	 	Total and Permanent Disability	  	7
		 	 2.39
	 	Valuation Date	  	7
		 	 2.40
	 	Year of Service	  	7
	 ARTICLE III — PARTICIPATION; DEFERRAL ELECTION
	  	7

  

 i 

							
		 	 3.1
	 	Eligibility to Participate	  	7
		 	 3.2
	 	Deferral Election	  	7
		 	 3.3
	 	Deferral Subaccount	  	8
		 	 3.4
	 	Deferred Restricted Stock Subaccount	  	9
		 	 3.5
	 	Transfer of Accounts to Zep Plan	  	9
	 ARTICLE IV — EMPLOYER CONTRIBUTION CREDITS; VESTING
	  	10
		 	 4.1
	 	Employer Contribution Credits	  	10
		 	 4.2
	 	2005 and 2006 Deferral Elections And Prior Plan Transfer Accounts	  	11
		 	 4.3
	 	Vesting of a Participant’s Account	  	12
	 ARTICLE V - PAYMENT OF ACCOUNTS
	  	13
		 	 5.1
	 	Timing and Form of Payment	  	13
		 	 5.2
	 	Payment upon Certain Terminations of Service	  	15
		 	 5.3
	 	Payment at Death	  	15
		 	 5.4
	 	Payment at Disability	  	15
		 	 5.5
	 	Financial Hardship Distribution	  	16
	 ARTICLE VI — PLAN ADMINISTRATOR
	  	16
		 	 6.1
	 	Plan Administrator	  	16
		 	 6.2
	 	Right and Duties	  	16
		 	 6.3
	 	Compensation, Indemnity and Liability	  	17
		 	 6.4
	 	Taxes	  	17
	 ARTICLE VII — CLAIMS PROCEDURE
	  	17
		 	 7.1
	 	Claims for Benefits	  	17
		 	 7.2
	 	Appeals	  	17
	 ARTICLE VIII — AMENDMENT AND TERMINATION; CHANGE IN CONTROL
	  	18
		 	 8.1
	 	Amendments	  	18
		 	 8.2
	 	Termination of Plan	  	18
		 	 8.3
	 	Change In Control Provisions	  	18
	 ARTICLE IX — MISCELLANEOUS
	  	19
		 	 9.1
	 	Limitation on Participant’s Rights	  	19
		 	 9.2
	 	Benefits Unfunded	  	19
		 	 9.3
	 	Other Plans	  	20
		 	 9.4
	 	Receipt or Release	  	20
		 	 9.5
	 	Governing Law	  	20
		 	 9.6
	 	Gender, Tense, and Headings	  	20
		 	 9.7
	 	Successors and Assigns; Nonalienation of Benefits	  	20
		 	 9.8
	 	Combination With Other Plan	  	20
		
	 APPENDIX A - PENSION PLAN MAKE-UP CONTRIBUTION CREDIT
	  	A-1
		
	 APPENDIX B - SERP MAKE-UP CONTRIBUTION CREDIT
	  	B-1

  

 ii 

 ARTICLE I 
 INTRODUCTION AND ESTABLISHMENT 
 Effective as of November 30, 2001, Acuity Brands,
Inc. (“Company”) established the Acuity Brands, Inc. Supplemental Deferred Savings Plan (“Prior Plan”) for the benefit of eligible management and highly compensated employees of the Company and its Subsidiaries and Business
Units. The Plan was designed to assist and encourage eligible employees to accumulate capital and to supplement their retirement income. 
 Because the law applicable to nonqualified deferred compensation plans was significantly changed effective January 1, 2005, the Company decided to adopt a new deferred compensation plan, the 2005 Supplemental Deferred Savings Plan (the
“Plan”) for deferrals and Company contribution credits occurring on or after January 1, 2005, and for unvested amounts credited to participants under the Prior Plan as of December 31, 2004. The vested amounts credited to
participants as of December 31, 2004 under the Prior Plan remain credited under the Prior Plan and subject to the terms and conditions of the Prior Plan. 
 The Plan has been amended several times since its adoption and this amendment and restatement is intended to incorporate said amendments into the Plan document. Accordingly, this amendment and restatement
is hereby effective as of January 1, 2010. 
  

 1 

 ARTICLE II 
 DEFINITIONS 
 When used in this Plan, the following terms shall have
the meanings set forth below unless a different meaning is plainly required by the context: 
 2.1 “Account” means the records
maintained by the Plan Administrator to determine the Participant’s deferrals and any Company contribution credits on the Participant’s behalf under this Plan. Such Account may be reflected as an entry in the Company’s (or
Employer’s) records, or as a separate account under a trust, or as a combination of both. Each Participant’s Account may consist of the following subaccounts: a Deferral Subaccount to reflect his deferrals of Compensation; a Matching
Subaccount for Employer matching contribution credits; a Supplemental Subaccount for any supplemental Employer contribution credits; and a Deferred Restricted Stock Subaccount to reflect any deferrals of Restricted Stock. The Plan Administrator may
establish such additional subaccounts as it deems necessary for the proper administration of the Plan. Effective January 1, 2009, a Participant’s Matching Subaccount and Supplemental Subaccount shall for vesting purposes be referred to
collectively as the Participant’s “Employer Contribution Account” and shall be divided into a Pre-2009 Employer Contribution Account for Employer contribution credits prior to January 1, 2009 and Post-2008 Employer Contribution
Account for Employer contribution credits on or after January 1, 2009. 
 2.2 “Annual Valuation Date” means December 31 of each year
while the Plan is in effect. 
 2.3 “Beneficiary” means the person or persons last designated in writing by the Participant under the
Plan to receive the vested amount in his Account in the event of such Participant’s death and, if no such designation has been made under this Plan, the designation of Beneficiary made by the Participant under the Prior Plan shall be deemed to
be the designation under this Plan; if no such designation under either plan shall be in effect at the time of a Participant’s death or if all designated Beneficiaries shall have predeceased the Participant, then the Beneficiary shall be the
Participant’s estate or his personal representative. 
 2.4 “Business Unit” means any of the operating units or divisions of the
Company, or its Subsidiaries, designated as a Business Unit by the Plan Administrator. 
 2.5 “Change in Capitalization” means any
increase or reduction in the number of Shares, or any change (including, but not limited to, a change in value) or exchange of Shares for a different number or kind of shares or other securities of the Company, by reason of a reclassification,
recapitalization, merger, consolidation, reorganization, spin-off, split-up, issuance of warrants or rights or debentures, stock dividend, stock split or reverse stock split, cash dividend, property dividend, combination or exchange of shares,
repurchase of shares, public offering, private placement, change in corporate structure or otherwise, which in the judgment of the Plan Administrator is material or significant. 
 2.6 “Change in Control” means any of the following events: 
 (a) The
acquisition (other than from the Company in an acquisition that is approved by the Incumbent Board) by any “Person” (as the term person is used for purposes of Sections 13(d) or 14(d) of the Securities Exchange Act of 1934, as amended (the
“1934 Act”)) of

 
beneficial ownership (within the meaning of Rule 13d-3 promulgated under the 1934 Act) of twenty percent (20%) or more of the combined voting power of the Company’s then outstanding
voting securities; or 
 (b) The individuals who, as of January 1, 2005, are members of the Board (the “Incumbent
Board”), cease for any reason to constitute at least two-thirds of the Board; provided, however, that if the election, or nomination for election by the Company’s stockholders, of any new director was approved by a vote of at least
two-thirds of the Incumbent Board, such new director shall, for purposes of this Plan, be considered as a member of the Incumbent Board; or 
 (c) Consummation of a merger or consolidation involving the Company if the stockholders of the Company, immediately before such merger or consolidation do not, as a result of such merger or consolidation,
own, directly or indirectly, more than seventy percent (70%) (sixty percent (60%), effective as of September 29, 2006) of the combined voting power of the then outstanding voting securities of the corporation resulting from such merger or
consolidation in substantially the same proportion as their ownership of the combined voting power of the voting securities of the Company outstanding immediately before such merger or consolidation; or 
 (d) A complete liquidation or dissolution of the Company or the sale or other disposition of all or substantially all of the assets of the
Company. 
 Notwithstanding the foregoing, a Change in Control shall not be deemed to occur pursuant to subsection (a) above, solely
because twenty percent (20%) or more of the combined voting power of the Company’s then outstanding securities is acquired by (i) a trustee or other fiduciary holding securities under one or more employee benefit plans maintained by
the Company or any of its subsidiaries, or (ii) any corporation which, immediately prior to such acquisition, is owned directly or indirectly by the stockholders of the Company in the same proportion as their ownership of stock in the Company
immediately prior to such acquisition. 
 2.7 “Code” means the Internal Revenue Code of 1986, as amended. 
 2.8 “Company” means Acuity Brands, Inc., a Delaware corporation, or its successor or successors. 
 2.9 “Compensation” means the annual cash compensation (salary plus bonuses whether under a Performance-Based Plan or other annual bonuses) paid by
the Employer to the Participant for the Plan Year, provided that a bonus actually paid during a subsequent Plan year based upon performance during the preceding Plan Year shall be treated as Compensation for such preceding Plan Year. The
Participant’s Compensation shall include amounts deferred by the Participant to this Plan and any other deferred compensation plan of the Employer (whether or not qualified), and any salary reduction amounts contributed to a welfare plan. The
term “Compensation” shall not include long-term incentive payments, income from stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards or other stock awards, car allowances, non-cash
remuneration, such as health benefits, life insurance, and other fringe benefits, moving expenses, relocation allowances, and payments from this Plan or any other deferred compensation plan. 

 2.10 “Deferral Subaccount” means the subaccount maintained to reflect the Participant’s
deferrals of Compensation, including amounts previously credited to a Participant’s Deferral Subaccount in the Prior Plan that are transferred to this Plan pursuant to Section 4.2, and any earnings thereon. 
 2.11 “Deferred Restricted Stock Subaccount” means the subaccount maintained to reflect the Participant’s deferrals of Restricted Stock and
related dividends, including amounts previously credited to the Participant under the Prior Plan that are transferred to the Plan pursuant to Section 4.2. 
 2.12 “Effective Date” means the effective date of the amendment and restatement of this Plan, January 1, 2010, except where otherwise noted. 
 2.13 “Election Form” means the form prescribed by the Plan Administrator on which a Participant may specify the amount of his Compensation that is
to be deferred pursuant to the provisions of Article III, and the time and manner of payment of his benefits. The Election Form may be accessed and completed through telephonic or electronic means as determined by the Plan Administrator. 

2.14 “Employer” means the Company and any Subsidiary or related employer designated by the Company to participate in the Plan. 
 2.15 “ERISA” means the Employee Retirement Income Security Act of 1974, as amended. 
 2.16 “Executive” means an officer of the Company, a Subsidiary or one of the Company’s Business Units, and other key employees designated as eligible pursuant to Section 3.1. Any
dispute regarding any individual’s classification shall be determined by the Plan Administrator in its sole discretion. 
 2.17 “Fair
Market Value” means the fair market value of the Shares as determined in good faith by the Plan Administrator; provided, however, that (a) if the Shares are admitted to trading on a national securities exchange, Fair Market Value on any
date shall be the closing price reported for the Shares on such exchange on such date or, if no sale was reported on such date, on the last date preceding such date on which a sale was reported, (b) if the Shares are admitted to quotation on
the National Association of Securities Dealers Automated Quotation System (“NASDAQ”) or other comparable quotation system and have been designated as a National Market System (“NMS”) security, Fair Market Value on any date shall
be the last sale price reported for the Shares on such system on such date or on the last day preceding such date on which a sale was reported, or (c) if the Shares are admitted to Quotation on NASDAQ and have not been designated a NMS
Security, Fair Market Value on any date shall be the average of the highest bid and lowest asked prices of the Shares on such system on such date. 
 2.18 “Financial Hardship” means the occurrence of an “unforeseeable emergency” with respect to the Participant within the meaning of Section 409A. 
 2.19 “Fiscal Year” means the Company’s fiscal year commencing on September 1 and ending on August 31 of the following calendar year, or such other 12-month period used by the
Company for financial reporting purposes. 

 2.20 “In-Service Account” means an account established by a Participant which will be paid (or
commence being paid) during employment on a date selected by the Participant. The Participant may establish Cash In-Service Accounts for his deferrals of Compensation and a Restricted Stock In-Service Account for his Restricted Stock deferrals.

 2.21 “Matching Subaccount” means the subaccount maintained to reflect the Employer’s matching contribution credits, including
amounts previously credited to a Participant’s Matching Subaccount in the Prior Plan that are transferred to this Plan pursuant to Section 4.2, and any earnings thereon. 
 2.22 “Participant” means an Eligible Executive as defined in Section 3.1 (or an individual who was an Eligible Executive, including individuals who were participating in the Prior Plan that
have amounts transferred to this Plan), a portion of whose Compensation for any Plan Year has been deferred pursuant to the Plan or who has received Employer contribution credits, and whose interest in the Plan has not been wholly distributed.

 2.23 “Performance-Based Plan” means a plan (or part of a plan) that pays compensation which qualifies as “Performance-based
compensation” within the meaning of Section 409A. 
 2.24 “Plan” means the Acuity Brands, Inc. 2005 Supplemental Deferred
Savings Plan, as set forth herein and as it may be amended from time to time. 
 2.25 “Plan Administrator” means the Company or, if
applicable, a committee appointed pursuant to Article VI to administer the Plan. 
 2.26 “Plan Year” means January 1 through the
next following December 31. 
 2.27 “Prime Rate” means the rate of interest published in the Wall Street Journal (or similar
financial publication selected by the Plan Administrator) as the prime rate on a particular date (or the next business day if such date is not a business day), as determined by the Plan Administrator. 
 2.28 “Prior Plan” means the Acuity Brands, Inc. Supplemental Deferred Savings Plan, which became effective November 30, 2001, as amended.

 2.29 “Prior Plan Transfer Account” means the amount credited to a Participant under the Prior Plan that is transferred to this
Plan, which shall be managed and distributed in accordance with the provisions of this Plan. 
 2.30 “Retirement” means termination of
the Participant’s employment with all Employers on or after attaining age 60, other than a Termination for Cause. 
 2.31 “Retirement
Account” means the account established for the Participant which will be payable in the manner elected by the Participant if the Participant terminates employment upon death, Disability, or after attaining age 55 and completing at least five
Years of Service. 
 2.32 “Section 409A” means Section 409A of the Code, as it may be amended from time to time, and the
regulations and rulings thereunder. 

 2.33 “Shares” means the common stock, par value $.01 per share, of the Company (including any new,
additional or different stock or securities resulting from a Change in Capitalization). 
 2.34 “Subsidiary” means any corporation in
an unbroken chain of corporations, beginning with the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of
the other corporations in such chain. The term “Subsidiary” shall also include a partnership or limited liability company in which the Company or a Subsidiary owns 50% or more of the profits interest or capital interest. 
 2.35 “Supplemental Subaccount” means the subaccount established to reflect the Employer’s supplemental contribution credits, including
amounts previously credited to a Participant’s Supplemental Subaccount in the Prior Plan that are transferred to this Plan pursuant to Section 4.2, and any earnings thereon. 
 2.36 “Termination for Cause” means the Executive has terminated employment and has been found by the Plan Administrator to be guilty of theft, embezzlement, fraud or misappropriation of the
Company’s property or of any action which, if the individual were an officer of the Company, would constitute a breach of fiduciary duty. The final determination of whether a Participant has incurred a Termination for Cause shall be made by the
Plan Administrator. 
 2.37 “Termination of Service” or similar expression means the termination of the Participant’s employment
as an employee of the Company and all adopting Employers. A Participant who is granted a temporary leave of absence, whether with or without pay, shall not be deemed to have terminated his service. In the event of a transfer of an Executive to a
position in which he would no longer be eligible to actively participate in this Plan, such transfer shall not constitute a Termination of Service. 
 Whether a Termination of Service takes place is determined based on the facts and circumstances surrounding the termination of the Participant’s employment and whether the Company and the Participant intended for the Participant to
provide significant services for the Company following such termination. A change in the Participant’s employment status will not be considered a Termination of Service if: 
 (a) the Participant continues to provide services as an employee of the Company at an annual rate that is twenty percent (20%) or more
of the services rendered, on average, during the immediately preceding three full calendar years of employment (or, if employed less than three years, such lesser period) and the annual remuneration for such services is twenty percent (20%) or
more of the average annual remuneration earned during the final three full calendar years of employment (or, if less, such lesser period), or 
 (b) the Participant continues to provide services to the Company in a capacity other than as an employee of the Company at an annual rate that is fifty percent (50%) or more of the services rendered,
on average, during the immediately preceding three full calendar years of employment (or if employed less than three years, such lesser period) and the annual remuneration for such services is fifty percent (50%) or more of the average annual
remuneration earned during the final three full calendar years of employment (or if less, such lesser period). 

 2.38 “Total and Permanent Disability” means the Participant: (i) is unable to engage in any
substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months; or (ii) is,
by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, receiving income replacement benefits for a
period of not less than three (3) months under an accident and health plan covering employees or directors of the Company. Medical determination of Disability may be made by either the Social Security Administration or by the provider of an
accident or health plan covering employees or directors of the Company provided that the definition of “disability” applied under such disability insurance program complies with the requirements of the preceding sentence. Upon the request
of the Plan Administrator, the Participant must submit proof to the Plan Administrator of the Social Security Administration’s or the provider’s determination. 
 2.39 “Valuation Date” means the Annual Valuation Date, and any other date(s) selected by the Plan Administrator as of which the Accounts of Participants are valued. 
 2.40 “Year of Service” means, subject to such Break in Service rules as the Plan Administrator may establish, each 12-consecutive month period,
commencing with the Participants first Hour of Service and ending on the 12-month anniversary date thereof, for which a Participant remains employed with the Employer. A Participant shall only be credited with full Years of Service. No credit is
given for partial Years of Service. Hours of Service and Break in Service shall be determined hereunder in accordance with the Company’s general rules for determining such matters under its tax-qualified plans. 
 ARTICLE III 
 PARTICIPATION; DEFERRAL ELECTION 
 3.1 Eligibility to Participate. Prior to, or at the beginning of, each Plan Year, the
Company (or its designee) shall specify the Executives who are eligible to make deferral elections under the Plan for the following Plan Year and to receive Matching Subaccount and Supplemental Subaccount credits (an “Eligible Executive”).
Such eligibility designation may be made by establishing a minimum compensation level for participation or by the use of such other criteria as the Company (or its designee) deems appropriate from time to time. 
 3.2 Deferral Election. For any Plan Year in which an Eligible Executive is eligible to participate, such Eligible Executive may elect on an Election Form to
have a portion of the Compensation to be received by the Executive for such Plan Year deferred in accordance with the terms and conditions of the Plan. The Plan Administrator may provide for a separate election with respect to salary and annual
bonus. 
 An Executive desiring to exercise such election shall, prior to the beginning of each Plan Year (or within 30 days after the date of
the Eligible Executive’s initial eligibility for the Plan as determined by the Plan Administrator, if such eligibility commences other than at the beginning of a Plan Year), complete an Election Form indicating the percentage or amount of his

 
Compensation for such Plan Year that he elects to have deferred, provided that the Plan Administrator may extend the date for electing to defer an annual bonus under a Performance-Based Plan to
the extent permitted by Section 409A. If the Eligible Executive’s election would result in a deferral greater than the maximum established by the Plan Administrator, any deferred amount shall be reduced to the maximum limit. 
 An election to defer Compensation must be filed with the Plan Administrator within the time period prescribed by the Plan Administrator. If a Participant
fails to file a properly completed and duly executed Election Form with the Plan Administrator by the prescribed time, he will be deemed to have elected not to defer any Compensation under this Plan for the Plan Year, except to the extent the Plan
Administrator in its sole discretion permits an extension of the election period. An Eligible Executive may not, after the applicable election date change (increase or decrease) the percentage or amount of Compensation he has elected to defer for a
Plan Year. 
 At the time a Participant elects to defer Compensation, the Participant shall elect with respect to such deferral the time and
manner in which the amount deferred (and any earnings thereon) will be distributed to the Participant. The Plan Administrator may provide that such election is a continuing election with respect to all amounts credited (and to be credited) to the
Participant’s Account. The distribution elections, and any changes to such elections, shall be made in accordance with Article V. 
 The
Plan Administrator may establish a minimum and maximum deferral limitation for a Plan Year for each group or class of Eligible Executives (which may be a dollar amount, a percentage of Compensation or some other limit) and may change such limitation
from year to year, provided an Eligible Executive shall not be permitted to reduce his Compensation below the amount necessary to make required or elected contributions to employee benefit plans, required federal, state and local tax withholdings,
and any other withholdings deemed necessary by the Plan Administrator or required by law. 
 The Participant may designate on the Election Form
(or on a separate form provided by the Plan Administrator) a Beneficiary (or Beneficiaries) to receive payment of amounts in his Account in the event of his death. If a Participant fails to designate a Beneficiary under the Plan, the Beneficiary
(ies) under the Prior Plan shall be deemed to be the Beneficiary (ies) designated under this Plan. 
 3.3 Deferral Subaccount. The Company shall
establish a Deferral Subaccount for each Participant under the Plan. The initial amount credited to the Participant’s Deferral Subaccount under the Plan shall be the amount credited to the Participant’s Deferral Subaccount in the Prior
Plan that is transferred to this Plan as provided in Section 4.2 below. Each Participant’s Deferral Subaccount shall thereafter be credited with the amounts of Compensation deferred by the Participant under this Plan. The timing and manner
in which amounts are credited to a Participant’s Deferral Subaccount under this Plan shall be determined by the Plan Administrator in its discretion, but the deferral election shall be applied to each pay period in which the Participant has
Compensation during his period of participation in the Plan. The Participant’s Deferral Subaccount shall be credited with interest at the Prime Rate, or the earnings under such other investment options that the Plan Administrator may establish,
on each Annual Valuation

 
Date based upon the amount credited to such Subaccount as of the preceding Annual Valuation Date, and at such other times, if any, as may be determined by the Plan Administrator. 
 3.4 Deferred Restricted Stock Subaccount. The Company shall establish a Deferred Restricted Stock Subaccount for each Participant under the Plan who has
Deferred Vested Value Subaccount credits in the Prior Plan Transfer Account being transferred from the Prior Plan. The initial amount credited to the Participant’s Deferred Restricted Stock Subaccount under the Plan shall be the number of
shares credited to the Participant’s Deferred Vested Value Subaccount in the Prior Plan that is transferred to this Plan as provided in Section 4.2 below and related dividends. No further deferrals will be allowed to the Deferred
Restricted Stock Subaccount by the Participant under this Plan, unless the Plan administrator determines otherwise. The Deferred Restricted Stock Subaccount will be adjusted on each Annual Valuation Date (and at such other dates, if any, as may be
determined by the Plan Administrator) as if it were invested in Shares to reflect any distributions, stock dividends, stock splits or similar actions with respect to the Shares since the preceding Annual Valuation Date (or such other date). The
Participant’s Deferred Restricted Stock Subaccount will be adjusted on each Annual Valuation Date (and at such other dates, if any, as may be determined by the Plan Administrator) to reflect the cash equivalent of any dividends with respect to
the Shares since the preceding Annual Valuation Date (or such other date). The amounts credited to a Participant’s Deferred Restricted Stock Subaccount shall be distributed and subject to a further deferral election as provided in
Section 5.1(g) below. 
 Effective as of the Spin-off Date (as defined in Section 3.5(c)(ii)), or as soon thereafter as is practical,
the Company shall adjust the number of Shares credited to the Participant’s Deferred Restricted Stock Subaccount to a number of Shares equal to the product of (i) the number of Shares credited to the Participant’s Deferred Restricted
Stock Subaccount as of the date of the distribution of the shares of Zep Inc. common stock to the stockholders of the Company (the “Distribution Date”), and (ii) the closing per share price of the Company common stock (trading with a
due bill) on the New York Stock Exchange on the Distribution Date, divided by the closing per share price of the Company’s common stock (on a when-issued basis) on the Distribution Date (or such other price as determined by the Plan
Administrator to be appropriate and equitable.) 
 3.5 Transfer of Accounts to Zep Plan. 
 (a) With respect to Transferring Participants who participated in the Plan prior to the Spin-off Date, and who have made deferral elections
under the Plan with respect to compensation which becomes payable on or after the Spin-off Date, the Company hereby transfers to the Zep Plan on the Spin-off Date, all rights with respect to amounts deferred (or to be deferred) pursuant to such
deferral elections, and the Zep Plan will assume all obligations with respect to such deferrals. Such deferral elections and the deferred amounts shall be maintained and administered in accordance with the Zep Plan, including the payment rules and
deemed investment rules of the Zep Plan. 
 (b) The Accounts of Transferring Participants in the Plan are hereby transferred to
the Zep Plan on the Spin-off Date and the Zep Plan will assume all obligations with respect to the amounts credited to such Accounts. The amounts credited to such Accounts shall be maintained

 
and administered in accordance with the Zep Plan, including the payment rules and deemed investment rules of the Zep Plan. 
 (c) For purposes of this Section 3.5 and the Plan, the following definitions shall apply: 
 (i) “Spin-off” means the distribution of the stock of Zep Inc. to the stockholders of the Company. 
 (ii) “Spin-off Date” means the date the stock of Zep Inc. is distributed to the stockholders of the Company. 
 (iii) “Transferring Participant” means a Participant in the Plan who is a current or former employee of the Company’s
specialty products business or a corporate office employee who is being hired by Zep Inc. in connection with the Spin-off. 
 (iv) “Zep Plan” means the Zep Inc. Supplemental Deferred Savings Plan, effective as of October 31, 2007, and as it may be amended. 
 ARTICLE IV 
 EMPLOYER CONTRIBUTION CREDITS; VESTING 
 4.1 Employer Contribution Credits. 
 (a) Matching Subaccount. The Company shall establish a Matching Subaccount for each Participant under the Plan. The initial amount credited to the Participant’s Matching Subaccount under the Plan shall be the amount credited to the
Participant’s Matching Subaccount in the Prior Plan that is transferred to this Plan as provided in Section 4.2 below. Thereafter, unless the Board otherwise determines, as of the end of each Plan Year commencing on or after
January 1, 2009 (or as of such other date as the Board may determine), there shall be credited to the Matching Subaccount of each Participant who is employed on the last day of the Plan Year an amount equal to 50% of the amount of the
Participant’s deferrals for such Plan Year, provided that the maximum amount credited to a Participant’s Matching Subaccount for a Plan Year shall not exceed five percent (5%) of the Participant’s Compensation for such Plan Year.
(For Plan Years prior to January 1, 2009, the matching percentage was 25% in lieu of 50 %.) Unless the Company otherwise determines for a designated Eligible Executive (other than an Executive Officer of the Company), an Eligible Executive who
is covered by a defined benefit supplemental executive retirement plan maintained by the Employer shall not be eligible to receive Employer matching contribution credits under the Plan. The amounts credited to the Participant’s Matching
Subaccount shall automatically be credited to the Participant’s Retirement Account. 
 Unless the Company otherwise determines, the amount
credited to a Participant’s Matching Subaccount shall be credited with interest at the Prime Rate, or the earnings under such other investment options that the Plan Administrator may establish, on each Annual Valuation Date based upon the
amount credited to such subaccount as of the preceding Annual Valuation Date. 
  

 (b) Supplemental Subaccount. The Company shall establish a Supplemental Subaccount for each
Participant under the Plan. The initial amount credited to the Participant’s Supplemental Subaccount under the Plan shall be the amount credited to the Participant’s Supplemental Subaccount in the Prior Plan that is transferred to this
Plan as provided in Section 4.2 below. Thereafter, unless the Board otherwise determines, as of the end of each Plan Year (or as of such other date as the Board may determine), there shall be credited to the Supplemental Subaccount of each
Eligible Executive who is employed on the last day of the Plan Year and who has a Year of Service for such Plan Year an amount equal to three percent (3%) of the Eligible Executive’s Compensation for such Plan Year. Unless the Company
determines otherwise for a designated Eligible Executive, an Eligible Executive who is covered by a defined benefit supplemental executive retirement plan maintained by the Employer shall not be eligible to receive Employer supplemental contribution
credits under the Plan. The amounts credited to the Participant’s Supplemental Subaccount shall automatically be credited to the Participant’s Retirement Account. 
 Unless the Company otherwise determines, the amount credited to an Eligible Executive’s Supplemental Subaccount shall be credited with interest at the Prime Rate, or the earnings under such other
investment options that the Plan Administrator may establish, on each Annual Valuation Date based upon the amount credited to such subaccount as of the preceding Annual Valuation Date. 
 (c) Additional Employer Contribution Credits. Certain Participants are eligible to receive additional Employer contribution credits under
the Plan, which additional amounts are described on an Appendix attached hereto and made a part hereof. The amount of any such additional Employer contribution credits shall automatically be credited to the Participant’s Retirement Account and
shall be payable in accordance with Article V. 
 (d) Investment Options. The Plan Administrator may in its discretion establish
additional investment options in which a Participant’s Account is deemed to be invested and provide the Participant the right to elect among such investment options. The investment options may include the right to invest in Shares and, in such
event, the Plan Administrator may provide for distributions from the Plan in Shares. 
 4.2 2005 and 2006 Deferral Elections And Prior Plan
Transfer Accounts. 
 (a) With respect to Eligible Executives who participated in the Prior Plan prior to January 1, 2005,
and who have made deferral elections under the Prior Plan for 2005 and 2006 with respect to Compensation which becomes payable on or after January 1, 2005, the Company hereby transfers all rights with respect to such deferral elections to the
Plan and the Plan hereby assumes all obligations with respect to such deferral elections. Such deferral elections shall be maintained and administered in accordance with the Plan, including the payment rules of Article V. The Plan Administrator may
permit changes to such deferral elections and payment elections in accordance with Section 409A. 
 (b) The Accounts (or
portion of Accounts) of Participants in the Prior Plan that were not vested as of December 31, 2004 (including any deferrals of unvested Restricted Stock) are hereby transferred to the Plan and the Plan hereby assumes all obligations with
respect to the

 
unvested amounts credited to such Accounts. The unvested amounts credited to such accounts shall be maintained and administered in accordance with the Plan, including the vesting schedule of
Section 4.3 and the payment rules of Article V. The Plan Administrator may permit changes to such payment elections in accordance with Section 409A. 
 (c) The Plan Administrator shall provide such additional payment elections to Participants (including Participants who are no longer active employees or otherwise do not actively participate in the Plan)
with respect to amounts credited to the Plan pursuant to this Section 4.2 as are consistent with Section 409A, including the transitional rules. 
 4.3 Vesting of a Participant’s Account. 
 (a) Deferral Subaccount. Except as
provided in the next sentence, a Participant’s interest in the amount credited to his Deferral Subaccount shall at all times be 100% vested and nonforfeitable. If a Participant incurs a Termination for Cause, he shall forfeit all earnings
credited on all amounts deferred to his Deferral Subaccount that have not yet been fully distributed to him under Article V. 
 (b) Employer Contribution Accounts. 
 (i) Except in the event of a Termination for Cause (as defined in
Section 2.36), a Participant’s interest in the amount credited to his Pre-2009 Employer Contribution Account shall become (A) 100% vested and nonforfeitable upon his death, Total and Permanent Disability, Retirement, or completion of
10 or more Years of Service and attainment of age 55 while actively employed, and (B) 50% vested upon completion of 5 Years of Service and attainment of age 55 while actively employed, with such vesting increasing 10% per year for each
additional Year of Service up to 10 years. 
 (ii) Except in the event of a Termination for Cause, a Participant’s interest
in the amount credited to his Post-2008 Employer Contribution Account shall become (A) 100% vested and nonforfeitable upon his death, Total and Permanent Disability, Retirement or completion of 10 or more Years of Service, or (B) 30%
vested upon completion of 3 Years of Service, with such vesting increasing 10% per year for each additional Year of Service up to 10 years. 
 (iii) Subject to Article VIII, if the Participant incurs a Termination for Cause (regardless of whether he is otherwise vested) or if the Participant’s employment is terminated prior to the time
specified for any vesting above, his entire Employer Contribution Accounts shall be forfeited. 
 (c) Deferred Restricted Stock
Subaccount. A Participant’s interest in the amount credited to his Deferred Restricted Stock Subaccount shall vest in accordance with the terms of the underlying award agreement for such Restricted Stock. 

 ARTICLE V 
 PAYMENT OF ACCOUNTS 
 5.1 Timing and Form of Payment. 
 (a) Subject to subsection (h) below, on the Election Form, the Participant shall make an election as to the timing and form of payment
for any Participant deferrals for such Plan Year and the form of payment for any Employer contribution credits for such Plan Year pursuant to Section 4.1 (such contributions are automatically credited to the Participant’s Retirement
Account) from among the options set forth below for the Participant’s Retirement Account and for any Cash In-Service Account. Once the Participant elects a form of payment for the Retirement Account, and the time and form of payment for any
Cash In-Service Account, those elections may only be changed twice and only in accordance with subsection (e) below. 
 (b)
The Participant will be entitled to payment of his Retirement Account in accordance with his payment election if he terminates employment upon death, Total and Permanent Disability, or after attaining age 55. The Participant may elect that the
vested amount of his Retirement Account be distributed in a lump sum, or in annual payments for a period of up to ten (10) years, provided that if the balance of the Participant’s Account is less than $15,000, the Participant’s
Account will automatically be paid in a lump sum. For example, under the 10-year annual payment method, the first year’s payment will equal one tenth (1/10) of the total Account, the second year’s will equal one ninth (1/9) of
the remaining Account, and so forth. Subject to subsection (h) below, payment of the Participant’s Retirement Account shall be made (i) if the payment is in a lump sum, within 90 days after the event entitling the Participant to
payment, or (ii) if the payment is in installments, commencing in the January following the event entitling the Participant to payment. 
 (c) The Participant may elect to have a Cash In-Service Account payable (or commence to be paid) during January of the year selected by the Participant on the Election Form (which initial payment date may
not be earlier than two years after the end of the calendar year during which amounts are first credited to such Account), in a lump sum or in annual payments over a period of up to ten (10) years, in the manner provided in (a) above, as
applicable; provided, that any subsequent deferrals to such designated Cash In-Service Account must be made no later than the end of the calendar year ending two years prior to such payment date; provided, further, that a Participant may only
establish such number of Cash In-Service Accounts for his Account as may be permitted by the Plan Administrator (or his designee) and the Plan Administrator may increase the minimum deferral period for Cash In-Service Accounts. Notwithstanding the
Participant’s elections under this Section 5.1(c), in the event the Participant becomes entitled to payment of his Retirement Account under subsection (b) above or to his Account under Section 5.2 below, the remaining balance of
the Participant’s Account shall be payable in accordance with the provisions for payment under subsection (b) or under Section 5.2 (whether or not the Cash In-Service Account was in payment status at such time). 
 (d) The Participant will designate each Plan Year which portion of the Participant’s deferrals for such Plan Year shall be credited to
the Participant’s Retirement Account and any

 
Cash In-Service Accounts he has established. If a Participant’s Account is distributed in installments, the Account shall continue to be credited with deemed earnings, gains and losses in
accordance with Article IV until the entire amount of the Account is distributed. 
 (e) A Participant may, not less than twelve
(12) months prior to the payment dates of any Cash In-Service Accounts he has established under subsection (c) above, and with the approval of the Plan Administrator, elect to defer the date on which payment of any Cash In-Service Account
shall commence and/or change the method of payment of such Cash In-Service Account, provided that, (i) after the initial election under subsection (c), a Participant may only make two election changes with respect to a particular Cash
In-Service Account (after the second such election change, the election shall become irrevocable); (ii) except as otherwise permitted by Section 409A, the first in-service payment with respect to any such changed election must be deferred
at least 5 years from the date such payment would otherwise have been made, (iii) except as otherwise permitted by Section 409A, the election shall not become effective for 12 months. 
 A Participant may, not less than twelve (12) months prior to the event entitling the Participant to payment of his Retirement Account under subsection
(b) above, elect to change the method of payment of the Participant’s Retirement Account, provided that (i) only two such changes are permitted and after the second such election change, the election is irrevocable; (ii) the
payment date for the Participant’s Retirement Account will be deferred for 5 years for each election change, and (iii) the election shall not become effective for 12 months. 
 The change of election shall be made through a method established by the Plan Administrator. 
 (f) Notwithstanding the Participant’s payment elections under this Article V, the entire amount remaining in the Participant’s Account will be paid to the Participant in a lump sum in January of
the calendar year in which the Participant will attain age 80. 
 (g) Unless the Participant elected otherwise as provided
below, the vested amounts credited to his Deferred Restricted Stock Subaccount were automatically paid in a single payment in January 2008. Participants were allowed to elect on such form as provided by the Plan Administrator to receive payment
(i) at the same time as the initial payment of his Retirement Account (assuming the Participant qualifies under subsection (b)), or (ii) during January of the year selected by the Participant for payment of his Restricted Stock In-Service
Account. If the Participant terminates employment prior to the payment date of his Restricted Stock In-Service Account or event entitling the Participant to payment under subsection (b), payment of the Participant’s Deferred Restricted Stock
Subaccount will be made within 90 days after the Participant’s termination of employment. All distributions from the Participant’s Deferred Restricted Stock Subaccount shall be made in a lump sum. The Participant may elect to change the
time (but not form) of payment of his Restricted Stock Account, provided (i) such change in the time of payment shall be made not less than twelve (12) months prior to the event entitling the Participant to payment of his Restricted
Stock Account; (ii) only two such changes are permitted and after the second such election change, the election is irrevocable; (iii) the payment date for the Participant’s Restricted Stock Account will be deferred for 5 years for
each election change, and (iv) the election shall not become effective for 12 months. 

 The amounts credited to the Participant’s Deferred Restricted Stock Subaccount shall be subject to the
Financial Hardship distribution rules of Section 5.5. The amounts credited to the Deferred Restricted Stock Subaccount that are treated as invested in Shares shall be paid in Shares. 
 (h) Notwithstanding the other provisions of this Article V, in the event a Participant who is a “key employee” (as determined by
the Plan Administrator in accordance with procedures established by the Committee that are consistent with Section 409A) becomes entitled to payments upon separation from service, payments shall not commence until 6 months after such
Participant separates from service and on such date the payments that would have been made during such six-month period shall be made. 
 5.2
Payment upon Certain Terminations of Service. 
 Subject to Section 5.1(h) above, the vested amount of the Participant’s Account
(including any unpaid amounts in the Participant’s In-Service Accounts) will be paid in a lump sum as soon as practical after the end of the month following the date on which the Participant has a Termination of Service and the elections under
Section 5.1 shall not be recognized, unless the Participant has attained age 55 at the time of such Termination of Service, or the Participant qualifies for Total and Permanent Disability under the terms of this Plan. 
 5.3 Payment at Death. 
 (a) While
Actively Employed. In the event a Participant dies while actively employed, the entire amount of the Participant’s Account will become fully vested and will be paid in accordance with the Participant’s death election on the Election Form
and, in the absence of such election, payment will be made in a lump sum. 
 (b) After Termination of Service. In the event a
Participant dies subsequent to Termination of Service, the remaining amount of the Participant’s Account, if any, will be distributed to the Participant’s designated Beneficiaries in the form and at the time that payments would have been
made had the Participant survived. 
 5.4 Payment at Disability. 
 In the event of the Participant’s Total and Permanent Disability (as defined in Section 2.38), the entire amount of the Participant’s Account will become fully vested and payment will be
made in accordance with the Participant’s election under subsection (b). Once payment has commenced, payments will continue as elected regardless of any future change in the Participant’s disability status. 

 5.5 Financial Hardship Distribution. 
 Subject to approval by the Plan Administrator, the Participant may apply to withdraw, upon a showing of Financial Hardship, part or all of his vested Account. If the Plan Administrator determines that a
distribution should be made on account of Financial Hardship, distribution from the Participant’s Account shall be made as soon as administratively practical. Such distribution shall not exceed the dollar amount necessary to satisfy the
Financial Hardship plus amounts necessary to pay taxes reasonably anticipated as a result of the distribution, after taking into account the extent to which the Financial Hardship is or may be relieved through reimbursement or compensation by
insurance or otherwise or by liquidation of the Participant’s assets (to the extent the liquidation of such assets would not itself cause Financial Hardship). 
 ARTICLE VI 
 PLAN ADMINISTRATOR 
 6.1 Plan Administrator. The Plan Administrator shall be the Company or such committee as may be designated by the Company to administer and manage the Plan.
Members of any committee shall not be required to be employees of the Company or Participants. Action of the Plan Administrator may be taken with or without a meeting of committee members. If a member of the committee is a Participant in the Plan,
he shall not participate in any decision which solely affects his own Account. 
 6.2 Right and Duties. The Plan Administrator shall have the
discretionary authority to administer and manage the Plan and shall have all powers necessary to accomplish that purpose, including (but not limited to) the following: 
 (a) To construe, interpret, and administer this Plan; 
 (b) To make allocations
and determinations required by this Plan, and to maintain records relating to Participants’ Accounts; 
 (c) To compute and
certify to the Company the amount and kinds of benefits payable to Participants or their beneficiaries, and to determine the time and manner in which such benefits are to be paid; 
 (d) To authorize all disbursements by the Company pursuant to this Plan; 
 (e) To maintain (or cause to be maintained) all the necessary records of the administration of this Plan; 
 (f) To make and publish such rules for the regulation of this Plan as are not inconsistent with the terms hereof; 
 (g) To delegate to other individuals or entities from time to time the performance of any of its duties or responsibilities hereunder; and

 (h) To hire agents, accountants, actuaries, consultants and legal counsel to assist in operating and administering the Plan.

 The Plan Administrator shall have the exclusive discretionary authority to construe and to interpret the
Plan, to decide all questions of eligibility for benefits and to determine the amount and manner of payment of such benefits, and its decisions on such matters shall be final and conclusive on all parties. 
 6.3 Compensation, Indemnity and Liability. The Plan Administrator shall serve as such without bond and without compensation for services hereunder. All
expenses of the Plan and the Plan Administrator shall be paid by the Company. If the Plan Administrator is a committee, no member of the committee shall be liable for any act or omission of any other member of the committee, nor for any act or
omission on his own part, excepting his own willful misconduct. The Company shall indemnify and hold harmless the Plan Administrator and each member of the committee against any and all expenses and liabilities, including reasonable legal fees and
expenses, arising out of his membership on the committee, excepting only expenses and liabilities arising out of his own willful misconduct. 
 6.4 Taxes. If the whole or any part of any Participant’s Account shall become liable for the payment of any estate, inheritance, income, or other tax which the Company shall be required to pay or withhold, the Company shall have the
full power and authority to withhold and pay such tax out of any monies or other property in its hand for the account of the Participant whose interests hereunder are so liable. The Company shall provide notice of any such withholding. Prior to
making any payment, the Company may require such releases or other documents from any lawful taxing authority as it shall deem necessary. 
 ARTICLE VII 
 CLAIMS PROCEDURE 
 7.1 Claims for Benefits. If a Participant or beneficiary (hereafter, “Claimant”) does not receive timely payment of any benefits which he believes
are due and payable under the Plan, he may make a claim for benefits to the Plan Administrator. The claim for benefits must be in writing and addressed to the Plan Administrator or to the Company. If the claim for benefits is denied, the Plan
Administrator shall notify the Claimant in writing within 90 days after the Plan Administrator initially received the benefit claim. However, if special circumstances require an extension of time for processing the claim, the Plan Administrator
shall furnish notice of the extension to the Claimant prior to the termination of the initial 90-day period and such extension shall not exceed one additional, consecutive 90-day period. Any notice of a denial of benefits shall advise the Claimant
of the basis for the denial, any additional material or information necessary for the Claimant to perfect his claim, and the steps which the Claimant must take to have his claim for benefits reviewed. 
 7.2 Appeals. Each Claimant whose claim for benefits has been denied may file a written request for a review of his claim by the Plan Administrator. The
request for review must be filed by the Claimant within 60 days after he received the written notice denying his claim. The decision of the Plan Administrator will be made within 60 days after receipt of a request for review and shall be
communicated in writing to the Claimant. Such written notice shall set forth the basis for the Plan Administrator’s decision. If there are special circumstances which require an extension of time for completing the review, the Plan
Administrator’s decision shall be rendered not later than 120 days after receipt of a request for review. 

 ARTICLE VIII 
 AMENDMENT AND TERMINATION; CHANGE IN CONTROL 
 8.1 Amendments. Subject
to Section 8.3, the Company (or its designee) shall have the right in its sole discretion to amend this Plan in any manner at any time; provided, however, that no such amendment shall reduce the Participant’s vested interest in his Account
under Section 4.3 at that time. Any amendment shall be in writing and executed by a duly authorized officer of the Company. All Participants shall be bound by such amendment. 
 8.2 Termination of Plan. The Company expects to continue this Plan, but does not obligate itself to do so. Subject to Section 8.3, the Company reserves the right to discontinue and terminate the Plan
at any time, in whole or in part, for any reason (including a change, or an impending change, in the tax laws of the United States or any State). If the Plan is terminated, the Plan Administrator shall be notified of such action in a writing
executed by a duly authorized officer of the Company, and the Plan shall be terminated at the time therein set forth. The amounts credited to the Participants’ Accounts upon such termination shall become fully vested and shall be paid in a lump
sum, provided that (i) the Company terminates at the same time any other arrangement that would be aggregated with the Plan under Section 409A; (ii) the Company does not adopt any other arrangement that would be aggregated with the
Plan under Section 409A for three years; (iii) the payments upon such termination shall not commence until 12 months after the date of termination and all such payments are completed within 24 months after the date of termination; and
(iv) such other requirements as may be imposed by Section 409A are satisfied. The termination of this Plan shall not result in the reduction of the amount credited to the Participant’s Account as of the date of such termination.

 8.3 Change In Control Provisions. 
 (a) Amendment or Termination. Notwithstanding anything contained in this Article VIII or the Plan to the contrary, for a period of two (2) years following a Change in Control, this Plan shall not be
terminated or amended to reduce, suspend or eliminate any Eligible Executive’s or Participant’s benefits or participation (or right to participate) provided under this Plan, including, without limitation, the benefits provided in Articles
III and IV. Any amendment or termination of this Plan which a Participant reasonably demonstrates (i) was at the request of a third party who has indicated an intention or taken steps reasonably calculated to effect a Change in Control, or
(ii) otherwise arose in connection with or in anticipation of a Change in Control, and which was not consented to in writing by the Participant shall be null and void, and shall have no effect whatsoever with respect to the Participant.

 (b) Termination of Employment. Notwithstanding anything contained in this Plan to the contrary, if a Participant’s
employment is terminated by the Company (other than for “Cause” as defined in (c) below) or by the Participant for any reason within two (2) years following a Change in Control, the Participant’s Account shall become fully
vested and the Company shall, within five (5) days, pay to the Participant a lump sum cash payment of the full amount credited to his Account with earnings determined under Sections 3.3 and 4.1 credited thereto to the date of payment. If a
Participant’s employment is terminated (i) for Cause (as defined in (c) below) within two (2) years following a Change in Control or (ii) for any reason more than two (2) years

 
after a Change in Control, the provisions of Article IV shall apply to the distribution of the Participant’s Account. 
 (c) Cause. For purposes of Section 8.3(b), a termination for “Cause” is a termination of the Executive evidenced by a
resolution adopted in good faith by the Company (or in the case of executive officers of the Company, by two-thirds of the Board of Directors of the Company) that the Participant (i) intentionally and continually failed to substantially perform
his duties with the Company (other than a failure resulting from the Participant’s incapacity due to physical or mental illness) which failure continued for a period of at least thirty (30) days after a written notice of demand for
substantial performance has been delivered to the Participant specifying the manner in which the Participant has failed to substantially perform, or (ii) intentionally engaged in conduct which is demonstrably and materially injurious to the
Company, monetarily or otherwise; provided, however, that no termination of the Participant’s employment shall be for Cause as set forth in clause (ii) above until (x) there shall have been delivered to the Participant a copy of a
written notice setting forth that the Participant was guilty of the conduct set forth in clause (ii) and specifying the particulars thereof in detail, and (y) the Participant shall have been provided an opportunity to be heard by the Board
(with the assistance of the Participant’s counsel if the Participant so desires). No act, nor failure to act, on the Participant’s part, shall be considered “intentional” unless he has acted or failed to act, with an absence of
good faith and without a reasonable belief that his action or failure to act was in the best interest of the Company. Notwithstanding anything contained in this Agreement to the contrary, in the case of any Participant who is a party to a Change in
Control Agreement, no failure to perform by the Participant after a Notice of Termination (as defined in the Participant’s Change in Control Agreement) is given by the Participant shall constitute Cause for purposes of this Plan. 
 ARTICLE IX 
 MISCELLANEOUS 
 9.1 Limitation on Participant’s Rights. Participation in this Plan shall not give any Participant the
right to be retained in the Company’s employ or the employ of any Employer, or any right or interest in this Plan or any assets of the Company other than as herein provided. The Company reserves the right to terminate the employment of any
Participant without any liability for any claim against the Company under this Plan, except to the extent provided herein. 
 9.2 Benefits
Unfunded. The benefits provided by this Plan shall be unfunded. All amounts payable under this Plan to Participants shall be paid from the general assets of the Company, and nothing contained in this Plan shall require the Company to set aside or
hold in trust any amounts or assets for the purpose of paying benefits to Participants. This Plan shall create only a contractual obligation on the part of the Company, and Participants shall have the status of general unsecured creditors of the
Company under the Plan with respect to amounts of Compensation they defer hereunder or any other obligation of the Company to pay benefits pursuant hereto. Any funds of the Company available to pay benefits pursuant to the Plan shall be subject to
the claims of general creditors of the Company, and may be used for any purpose by the Company. 
 Notwithstanding the preceding paragraph, the
Company may at any time transfer assets, including Shares, to a trust for purposes of paying all or any part of its obligations under this

 
Plan. However, to the extent provided in the trust only, such transferred amounts shall remain subject to the claims of general creditors of the Company. To the extent that assets are held in a
trust when a Participant’s benefits under the Plan become payable, the Plan Administrator shall direct the trustee to pay such benefits to the Participant from the assets of the trust. 
 9.3 Other Plans. This Plan shall not affect the right of any Executive or Participant to participate in and receive benefits under and in accordance with
the provisions of any other employee benefit plans which are now or hereafter maintained by the Company, unless the terms of such other employee benefit plan or plans specifically provide otherwise. 
 9.4 Receipt or Release. Any payment to a Participant in accordance with the provisions of this Plan shall, to the extent thereof, be in full satisfaction of
all claims against the Plan Administrator, the Company and any Employer, and the Plan Administrator may require such Participant, as a condition precedent to such payment, to execute a receipt and release to such effect. 
 9.5 Governing Law. This Plan shall be construed, administered, and governed in all respects in accordance with applicable federal law and, to the extent not
preempted by federal law, in accordance with the laws of the State of Georgia. If any provisions of this instrument shall be held by a court of competent jurisdiction to be invalid or unenforceable, the remaining provisions hereof shall continue to
be fully effective. 
 9.6 Gender, Tense, and Headings. In this Plan, whenever the context so indicates, the singular or plural number and the
masculine, feminine, or neuter gender shall be deemed to include the other. Headings and subheadings in this Plan are inserted for convenience of reference only and are not considered in the construction of the provisions hereof. 
 9.7 Successors and Assigns; Nonalienation of Benefits. This Plan shall inure to the benefit of and be binding upon the parties hereto and their successors
and assigns; provided, however, that the amounts credited to the Account of a Participant shall not (except as provided in Section 6.4) be subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance,
charge, garnishment, execution or levy of any kind, either voluntary or involuntary, and any attempt to anticipate, alienate, sell, transfer, assign, pledge, encumber, charge or otherwise dispose of any right to any benefits payable hereunder,
including, without limitation, any assignment or alienation in connection with a separation, divorce, child support or similar arrangement, shall be null and void and not binding on the Plan or the Company. In addition to any obligations imposed by
law upon any successor to the Company, the Company will require any successor (whether direct or indirect, by purchase, merger, consolidation or otherwise) to substantially all of the business or assets of the Company to expressly agree to assume
and perform this Agreement in the same manner that the Company would be required to perform it. 
 9.8 Combination With Other Plan. The Plan may
be combined or merged with other deferred compensation plans of the Company and the Plan Administrator shall establish the terms and conditions relating to any such merger. 

 IN WITNESS WHEREOF, the Company has caused this Plan to be executed by its duly
authorized officers as of the 26th day of March, 2010, to
be effective on the Effective Date, except where otherwise noted. 
  

			
	ACUITY BRANDS, INC.
		
	By:	 	 /s/ Richard K. Reece

		
	Title:	 	 Executive Vice President and Chief

		 	 Financial Officer

 APPENDIX A 
 PENSION PLAN MAKE-UP CONTRIBUTION CREDIT 
 (a) In General –
Commencing January 1, 2005 (except where such amounts have already been credited under the Prior Plan), the Company shall for each Plan Year during the Make-Up Contribution Period (as defined in subsection (b) below) for each Pension Plan
Participant (as defined in subsection (d) below) make a Make-Up Contribution credit (determined in accordance with subsection (b) below) for the benefit of such Pension Plan Participant. The Make-Up Contribution for each Plan Year shall be
credited to the Pension Plan Participant’s Make-Up Contribution Subaccount. The Make-Up Contribution Subaccount shall become vested in accordance with the following schedule: 
  

					
	 Completed Years of Service
	  	Vested Percentage	 	Forfeited Percentage
			
	 Less than 5 years
	  	0	 	100%
			
	 5 or more years
	  	100%	 	0%

 The Make-Up Contribution Subaccount
shall be credited with interest at the Prime Rate on each Annual Valuation Date based upon the amount credited to such Subaccount as of the preceding Annual Valuation Date and at such other times, if any, as may be determined by the Plan
Administrator. The vested Make-up Contribution Subaccount shall be credited to the Retirement Account and shall be distributed as provided in Article V. The Make-Up Contribution for each Plan Year shall be credited on the last day of the Plan Year,
unless the Employer elects to make such credit on an earlier date. In order to be eligible to receive the Make-Up Contribution credit for the Plan Year, the Pension Plan Participant must be actively employed on the last day of the Plan Year and
complete a Year of Service for such year. Any forfeiture of the credits to a Pension Plan Participant’s Make-Up Contribution Account shall be used to reduce future make-up contribution credits. 
 (b) Amount of Make-Up Contribution Credit 
 (i) The Make-Up Contribution credit for a Pension Plan Participant for the Plan Year shall be equal to the Present Value determined as of January 1, 2003 of the Annual Benefit Loss of the Pension Plan Participant divided by the number
of years in the Make-Up Contribution Period, adjusted by the Discount Percentage. The Annual Benefit Loss for a Pension Plan Participant is the difference between (A) the aggregate annual retirement benefit (based upon the assumptions in
subsection (b)(ii) below) the Pension Plan Participant was projected to receive at age 62 assuming that the Pension Plan and the 401(k) Plan (as defined in subsection (d) below) continued in operation in accordance with their terms as in effect
on December 31, 2002, and (B) the aggregate annual retirement benefit (based upon the assumptions in subsection (b)(ii) below) the Pension Plan Participant was projected to receive at age 62 assuming that the Pension Plan is frozen at
January 1, 2003 and the 401(k) Plan was amended effective January 1, 2003 to provide for a match of 60% on Elective Deferrals up to 6% of the Participant’s Annual Compensation. The Pension Plan Participant’s Make-Up Contribution
Period is the period commencing January 1, 2003 and ending on the last day of the Plan Year in which the Pension Plan Participant attains age 62. The Present Value of the Annual Benefit Loss shall be determined by taking the amount

  

 A-1 

 
of the Annual Benefit Loss on the date the Pension Plan Participant attains age 62 and discounting such amount to January 1, 2003 using an interest rate of 5.12% per year and the
mortality table prescribed by the IRS in Rev. Rul. 95-6. 
 (ii) The Annual Benefit Loss shall be calculated using the following
factors and assumptions: 
  

	 	•	 	 A Pension Plan Participant’s service and compensation under the Pension Plan are frozen as of December 31, 2002.

  

	 	•	 	 The rate of Matching Contributions under the 401(k) Plan is increased effective January 1, 2003 to 60% on Elective Contributions up to 6% of a
Participant’s Annual Compensation and the Pension Plan Participant will make sufficient Elective Deferrals to receive the maximum Matching Contributions. 

  

	 	•	 	 A Pension Plan Participant’s Annual Compensation is his or her Annual Compensation for 2000, with an increase rate of 3% per year.

  

	 	•	 	 Pension Plan Participant’s Matching Contribution Account Balance in the 401(k) Plan as of December 31, 2001, will be projected to age 62 with
earnings of 6% per year. 

  

	 	•	 	 401(k) Plan compensation limit of $200,000 applies for 2002 and prior years and will increase by 3% per year. 

  

	 	•	 	 Annuity and lump sum conversions are based upon a 5.12% annual interest rate and the mortality table prescribed by the IRS in Rev. Rul. 95-6.

  

	 	•	 	 The annual retirement benefit from the 401(k) Plan is based solely upon the Pension Plan Participant’s Matching Contribution Account (adjusted as
provided herein) and not the individual’s other accounts under Section 4.1 of the 401(k) Plan. 

 (iii) The Make-Up Contribution to be credited to a Pension Plan Participant for a Plan Year shall be increased over the amount credited for the prior Plan Year by the Discount Percentage to account for the passage of a year and the related
foregone interest earnings potential. 
 (c) Change of Eligible Status – If a Pension Plan Participant is treated as a Highly Compensated
Employee under the 401(k) Plan for a Plan Year, the Pension Plan Participant shall be eligible to receive a Make-Up Contribution credit for such Plan Year. If the Pension Plan Participant who is a Highly Compensated Employee for a Plan Year ceases
to be a Highly Compensated Employee for a subsequent Plan Year, then the Pension Plan Participant shall be ineligible to receive a Make-Up Contribution credit for such later Plan Year. If a Pension Plan Participant ceases to be eligible to
participate in the 401(k) Plan for a Plan Year, the Pension Plan Participant shall not be eligible to receive a Make-Up Contribution for such Plan Year. 
  

 A-2 

 (d) Definitions – The following definitions shall apply for purposes of this Appendix A: 
 (i) Pension Plan – The Acuity Brands, Inc. Pension Plan, as amended through December 31, 2002. 
 (ii) Pension Plan Participant – A participant in the Pension Plan on December 31, 2002 who (i) is an active Employee of an
Employer on December 31, 2002, (ii) will be considered a Highly Compensated Employee of the Employer for 2003 or in a subsequent Plan Year for which he would be eligible for a Make-Up Contribution, and 
 (iii) is a Participant in the 401(k) Plan for the Plan Year commencing on January 1, 2003 and any subsequent Plan Year for which a
Make-Up Contribution credit is to be made. 
 (iv) Discount Percentage – A percentage rate equal to 5.12% per year.

 (v) 401(k) Plan – The Acuity Brands, Inc. 401(k) Plan for Corporate Employees as amended through December 31, 2002.

 (e) Discretion of Company – The Company shall have the discretion to determine the amount of the Make-Up Contribution for Pension Plan
Participants each Plan Year and the Company’s determination of the Make-Up Contribution credit shall be final and binding upon all parties. 
 (f) Amendment – This Appendix A may be amended by the Company in accordance with the usual rules for amendment of the Plan in Section 8.1. 
  

 A-3 

 APPENDIX B 
 SERP MAKE-UP CONTRIBUTION CREDIT 
 (a) In General – Commencing January 1, 2005 (except
where such amounts have already been credited under the Prior Plan), the Company shall for each Plan Year during the SERP Make-Up Contribution Period (as defined in subsection (b) below) for each SERP Plan Participant (as defined in subsection
(d) below) make a SERP Make-Up Contribution credit (determined in accordance with subsection (b) below) for the benefit of such SERP Plan Participant. The SERP Make-Up Contribution for each Plan Year shall be credited to the SERP Plan
Participant’s SERP Make-Up Contribution Subaccount. The SERP Make-Up Contribution Subaccount shall at all times be fully vested and nonforfeitable. The SERP Make-Up Contribution Subaccount shall be credited with interest at the Prime Rate on
each Annual Valuation Date based upon the amount credited to such Subaccount as of the preceding Annual Valuation Date and at such other times, if any, as may be determined by the Plan Administrator. The SERP Make-up Contribution Subaccount shall be
credited to the Retirement Account and shall be distributed as provided in Article V. The SERP Make-Up Contribution for each Plan Year shall be credited on the last day of the Plan Year, unless the Employer elects to make such credit on an earlier
date. In order to be eligible to receive the SERP Make-Up Contribution credit for the Plan Year, the SERP Plan Participant must be actively employed on the last day of the Plan Year and complete a Year of Service for such year. 
 (b) Amount of SERP Make-Up Contribution Credit 
 (i) The SERP Make-Up Contribution credit for a SERP Plan Participant for the Plan Year shall be equal to the Present Value determined as of January 1, 2003 of the Annual Benefit Loss of the SERP Plan
Participant divided by the number of years in the SERP Make-Up Contribution Period, adjusted by the Discount Percentage. The Annual Benefit Loss for a SERP Plan Participant is the difference between (A) the aggregate annual supplemental
retirement benefit (based upon the assumptions in subsection (b)(ii) below) the SERP Plan Participant was projected to receive at age 60 assuming that the Pension Plan, the Current SERP (as defined in subsection (d) below) and the EDCP (as
defined in subsection (d) below) continued in operation in accordance with their terms as in effect on August 31, 2002, and (B) the aggregate supplemental annual retirement benefit (based upon the assumptions in subsection (b)(ii)
below) the SERP Plan Participant is projected to receive at age 60 from the New SERP. The Pension Plan Participant’s SERP Make-Up Contribution Period is the period commencing January 1, 2003 and ending on the last day of the Plan Year in
which the SERP Plan Participant attains age 60. The Present Value of the Annual Benefit Loss shall be determined by taking the amount of the Annual Benefit Loss on the date the SERP Plan Participant attains age 60 and discounting such amount to
January 1, 2003 using an interest rate of 5.12% per year and the mortality table prescribed by the IRS in Rev. Rul. 95-6. 
 (ii) The Annual Benefit Loss shall be calculated using the following factors and assumptions: 
  

	 	•	 	 A SERP Plan Participant’s service and compensation under the Pension Plan is frozen as of December 31, 2002. 

  

 B-1 

	 	•	 	 A SERP Plan Participant’s Annual Compensation is his or her Annual Compensation for 2002, with an increase rate of 3% per year.

 (iii) The SERP Make-Up Contribution to be credited to a SERP Plan Participant for a Plan Year shall be
increased over the amount credited for the prior Plan Year by the Discount Percentage to account for the passage of a year and the related foregone interest earnings potential. 
 (c) Discretion of Company – The Company shall have the discretion to determine the amount of the SERP Make-Up Contribution for SERP Plan Participants each Plan Year and the Company’s
determination of the SERP Make-Up Contribution credit shall be final and binding upon all parties. 
 (d) Definitions – The following
definitions shall apply for purposes of this Appendix B: 
 (i) Pension Plan – The Acuity Brands, Inc. Pension Plan, as
amended through December 31, 2002. 
 (ii) SERP Plan Participant – Kenyon W. Murphy, Joseph G. Parham, Jr., and Vernon
J. Nagel. 
 (iii) Discount Percentage – A percentage rate equal to 5.12% per year. 
 (iv) Current SERP – The Acuity Brands, Inc. Supplemental Retirement Plan for Executives as amended through December 31, 2002.

 (v) New SERP – The Acuity Brands, Inc. 2002 Supplemental Executive Retirement Plan, which will be effective
January 1, 2003. 
 (vi) EDCP – The Acuity Brands, Inc. Executives’ Deferred Compensation Plan as amended through
August 31, 2002. 
 (e) Amendment – This Appendix B may be amended by the Company in accordance with the usual rules for amendment of
the Plan in Section 8.1. 
  

 B-2

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