EX-4(q)



 Exhibit 4(q) 

ALCOA RETIREMENT SAVINGS PLAN 

FOR 
 HOURLY
NON-BARGAINING EMPLOYEES 
 AS AMENDED AND RESTATED 

EFFECTIVE JANUARY 1, 2015 







 ALCOA RETIREMENT SAVINGS PLAN FOR HOURLY NON BARGAINING EMPLOYEES 

TABLE OF CONTENTS 
  

							
	           SECTION	 	 	  	PAGE	 
	 DEFINITIONS
	 		  	 	2	  
		
	 GENERAL PROVISIONS
	  	 	11	  
			
	 SECTION 1.
	 	 PARTICIPATION
	  	 	11	  
	 SECTION 2.
	 	 EMPLOYEE SAVINGS
	  	 	11	  
	 SECTION 3.
	 	 PARTICIPATING EMPLOYER CONTRIBUTIONS
	  	 	13	  
	 SECTION 4.
	 	 DISCRETIONARY CONTRIBUTIONS
	  	 	14	  
	 SECTION 5.
	 	 EMPLOYER RETIREMENT INCOME CONTRIBUTIONS
	  	 	14	  
	 SECTION 6.
	 	 NONFORFEITURE OF PARTICIPATING EMPLOYER AND DISCRETIONARY CONTRIBUTIONS
	  	 	15	  
	 SECTION 7.
	 	 ROLLOVER CONTRIBUTIONS
	  	 	15	  
	 SECTION 8.
	 	 INVESTMENTS
	  	 	15	  
	 SECTION 9.
	 	 TRANSFERS BETWEEN INVESTMENTS
	  	 	16	  
	 SECTION 10.
	 	 WITHDRAWALS DURING EMPLOYMENT
	  	 	17	  
	 SECTION 11.
	 	 DISTRIBUTIONS UPON TERMINATION OF EMPLOYMENT
	  	 	17	  
	 SECTION 12.
	 	 PAYMENT OF DISTRIBUTIONS UPON TERMINATION OF EMPLOYMENT
	  	 	19	  
	 SECTION 13.
	 	 GENERAL PROVISIONS WITH RESPECT TO WITHDRAWALS
	  	 	21	  
	 SECTION 14.
	 	 NONASSIGNABILITY
	  	 	21	  
	 SECTION 15.
	 	 EXTENT OF PARTICIPANT’S RIGHTS
	  	 	22	  
	 SECTION 16.
	 	 MANAGEMENT OF FUNDS
	  	 	22	  
		
	 OTHER PROVISIONS OF THE PLAN
	  	 	26	  
			
	 SECTION 17.
	 	 LOANS
	  	 	26	  
	 SECTION 18.
	 	 TRUST
	  	 	27	  
	 SECTION 19.
	 	 ADMINISTRATION
	  	 	27	  
	 SECTION 20.
	 	 AMENDMENT, MODIFICATION, SUSPENSION OR TERMINATION
	  	 	30	  
	 SECTION 21.
	 	 ADMINISTRATIVE EXPENSES
	  	 	31	  
	 SECTION 22.
	 	 SELECTION OF BENEFICIARIES
	  	 	31	  
	 SECTION 23.
	 	 PARTICIPANT’S STATEMENT
	  	 	32	  
	 SECTION 24.
	 	 EFFECTIVE DATE OF PLAN
	  	 	32	  
	 SECTION 25.
	 	 CONSTRUCTION
	  	 	32	  


  
 Alcoa Retirement Savings Plan for Hourly
Non-Bargaining Employees 
 Amended and Restated Effective as of January 1, 2015 
  

i 









							
	 APPENDICES & SCHEDULES
	  	 	33	  
			
	 APPENDIX A.
	 	 LIMITATIONS & DISCRIMINATION TESTING
	  	 	33	  
	 APPENDIX B.
	 	 CODE SECTION 415 LIMITATIONS
	  	 	44	  
	 APPENDIX C.
	 	 TOP HEAVY RULES
	  	 	45	  
	 APPENDIX D.
	 	 MINMUM DISTRIBUTION REQUIREMENTS
	  	 	47	  
	 SCHEDULE A
	 	 MERGERS, TRANSFERS, AND RESTATEMENTS
	  	 	51	  
	 SCHEDULE B
	 	 PARTICIPATING EMPLOYER & CONTRIBUTIONS
	  	 	53	  


  
 Alcoa Retirement Savings Plan for Hourly
Non-Bargaining Employees 
 Amended and Restated Effective as of January 1, 2015 
  

ii 








 ALCOA RETIREMENT SAVINGS PLAN FOR HOURLY NON BARGAINING EMPLOYEES 

AS AMENDED AND RESTATED 

EFFECTIVE JANUARY 1, 2015 

Alcoa Inc. (herein called “Alcoa”), has established the Alcoa Savings Plan for Subsidiary and Affiliate Employees (the
“Subsidiary Plan”) a defined contribution, individual account, 401(k) plan intending to qualify under Section 401(a) of the Internal Revenue Code, for the exclusive benefit of its eligible employees. The purpose of the Subsidiary Plan
has been to provide a method of savings by eligible salaried and non-bargaining hourly employees of certain Alcoa subsidiaries and affiliates to enable them to enhance their retirement benefits, and at the same time enable them to acquire a stock
interest in the Company. The Alcoa Stock Fund is an employee stock ownership plan (“ESOP”), within the meaning of Section 4975(e) of the Code. The assets held in the ESOP must be invested primarily in employer securities as
defined in Code Section 409(l). 
 Effective as of January 1, 2010, the Subsidiary Plan was amended and restated again to
incorporate provisions of the Economic Growth and Tax Relief Reconciliation Act of 2001 and as amended by the Job Creation and Worker Assistance Act of 2002, the Pension Protection Act of 2006, the Heroes Earnings Assistance and Relief Tax Act of
2008 (“HEART”), and the Worker, Retiree, and Employer Recovery Act of 2008 (“WRERA”), and is intended as good faith compliance with the requirements of HEART, to be construed in accordance with the guidance issued thereunder.

 Effective January 1, 2011, the Plan was renamed the Alcoa Retirement Savings Plan for Hourly Non-Bargaining Employees (“Hourly
Non-Bargaining Savings Plan”) and is restructured as described hereafter: portions of the Plan are spun off and transferred to the Alcoa Retirement Savings Plan for Salaried Employees (formerly Alcoa Savings Plan for Non-Bargaining Employees),
sponsored by Alcoa Inc.; and portions are spun off to the Alcoa Retirement Savings Plan for Fastener Systems and Commercial Windows Employees, sponsored by the Alcoa subsidiary, Alcoa Global Fasteners, Inc. 

Effective as of close of business on December 31, 2012, the amounts standing to the credit in the salaried participants’ accounts
from the Alcoa Retirement Savings Plan for Mill Products Employees will be transferred to the Alcoa Retirement Savings Plan for Salaried Employees and immediately thereafter the Alcoa Retirement Savings Plan for Mill Products Employees is merged
into this Plan, and hourly participant’s accounts from the Mill Products Plan will be maintained in this Plan. 
 Effective
January 1, 2015, the Plan is hereby amended and restated again to incorporate provisions of prior Plan amendments adopted since the January 1, 2010, amendment and restatement of the Plan as well as to reflect new laws and regulations that
have come into effect since the January 1, 2010, amendment and restatement of the Plan. The Plan is intended to be construed in accordance with any regulatory guidance issued with respect to such new laws and regulations. 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	1	 	









 DEFINITIONS 

For the purpose of this Plan, unless a different meaning is plainly required by the context: 

AFFILIATE means any non-corporate business entity or corporate business entity without voting stock, as such, which Alcoa and/or one or
more Subsidiaries control in fact. 
 AFTER-TAX SAVINGS means such portions of the total amounts contributed to the Plan by a
Participant in accordance with Section 2 that are not accorded favorable tax treatment under Section 401(k) of the Code, but not including contributions made by a Participant in excess of the annual limit on 401(k) contributions under Code
Section 402(g) or in excess of the “average deferral percentage limit” of Section 401(k)(3) of the Code. 
 ALCOA
means Alcoa Inc. 
 ALCOA STOCK FUND means the ESOP as described in Section 16(e), which became effective January 1,
2002. 
 AUTOMATIC ENROLLMENT or AUTOMATICALLY ENROLLED means the automatic default enrollment in the Plan described in Sections 1(b)
and 2(c) and applicable to Eligible Employees who do not opt out of the Plan. 
 AUTOMATIC PRE-TAX RATE ESCALATION means the feature
that is effective with Automatic Enrollment or that may be elected by a Participant, in which the rate of Payroll Deduction for Pre-Tax Savings is increased until a target Payroll Deduction rate is reached. The Automatic Pre-Tax Rate Escalation will
increase effective April 1 of each year. 
 AUTOMATIC REBALANCING means the feature described in Section 8(d). 

BENEFICIARY means the recipient or recipients designated by a Participant, in accordance with Section 22 of the Plan, to receive
benefits in the event of the Participant’s death as either a primary beneficiary, or a contingent beneficiary who will receive benefits in the event the primary beneficiary predeceases the Participant. 

BENEFITS MANAGEMENT COMMITTEE or COMMITTEE means the administrative committee of one or more persons appointed by the Board that
interprets and administers the Plan in accordance with Section 19. 
 BOARD means the Board of Directors of Alcoa. 

BROKERAGE ACCOUNT means the investment option whereby a Participant may invest and personally manage investments outside the Core Funds
as described in Section 16(h). 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	2	 	









 BUSINESS DAY means any day on which the Plan Administrator, Designee and New York Stock
Exchange is open for business. 
 CODE means the Internal Revenue Code of 1986, as amended. 

COMPANY CONTRIBUTION means all Company Stock contributed to Participants’ accounts under the Plan’s provisions for periods
prior to January 1, 1993. 
 COMPANY STOCK means common stock of Alcoa and any substituted security under Section 16. 

CONTINUOUS SERVICE means, except as modified by the balance of this definition and as otherwise specifically provided in Schedule C
with respect to certain Participant populations, the period of continuous employment with Alcoa, a Subsidiary or Affiliate, either as a salaried employee or as an hourly-rated employee, commencing with the Participant’s Employment Commencement
Date or Reemployment Commencement Date. Continuous Service terminates on the Participant’s Severance from Service Date. Continuous Service upon reemployment does not include any Continuous Service accrued prior to a termination of Continuous
Service, except as follows: 
 A Participant who incurs a Severance from Service Date and thereafter has a Reemployment Commencement Date,
will have his or her Continuous Service on the Severance from Service Date reinstated if the period between his or her Severance from Service Date and his or her Reemployment Commencement Date is less than the greater of (a) five years or
(b) the aggregate number of years of Continuous Service earned before the Severance from Service Date. 
 CORE FUND means any
investment vehicle (including the Alcoa Stock Fund and Target Maturity Funds) for Pre-Tax Savings, After-Tax Savings, Participating Employer Contributions, Discretionary Contributions, Restricted Discretionary Contributions, or Employer Retirement
Income Contributions, but excluding the Brokerage Account. The Committee will determine the Core Funds, and may make changes to the composition of the funds from time to time. 

CURRENT MARKET VALUE means with respect to any investment allocated to the accounts of any Participant in the Core Funds, the
unitized value of the securities and cash of the investment in the applicable Fund as of a specified date, less any fees provided for in Section 21, valued in accordance with a procedure adopted by the investment manager for the fund and
acceptable to the Benefits Management Committee. 
 DESIGNEE means such entity as may be chosen from time to time by the Plan
Administrator and approved by the Benefits Management Committee to handle certain specified administration functions of the Plan. 

DISCRETIONARY CONTRIBUTIONS means amounts contributed by a Participating Employer as determined under Section 4(a). 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	3	 	









 EFFECTIVE DATE with respect to a distribution has the meaning prescribed in
Section 13, with respect to a transfer has the meaning prescribed in Section 9 and with respect to a qualified domestic relations order has the meaning prescribed in Section 14. 

ELIGIBLE COMPENSATION means: (i) the regular base salary and if applicable, the base salary adjustment (where commission payments
constitute all or part of an employee’s remuneration, the commissions actually paid as remuneration during a regular pay period will be used to determine the Eligible Compensation for such employee); (ii) the regular hourly wages and if
applicable: cash cola, regular vacation pay, witness pay, holiday advance pay (for a holiday not worked), bereavement pay, shift differential, jury pay, job upgrades, schedule premium, income adjustments, and wage adjustments which are payable
during such periods as the employee is an Eligible Employee as determined by the Participating Employers. In no event may the amount of Eligible Compensation for any Participant during any Plan Year, for any purposes under this Plan, exceed
$265,000, as adjusted for any Plan Year for cost-of-living increases in accordance with Section 401(a)(17)(B) of the Code applicable to that calendar year. 

In addition to the forgoing, for purposes of allocating Employer Retirement Income Contributions as indicated in Schedule B, Eligible
Compensation will include any Variable Compensation Awards or incentive compensation payable during such periods as the employee is an Eligible Employee as determined by the Participating Employers. 

ELIGIBLE EMPLOYEE means any person who meets all of the following conditions: 

(a) (1) Is a resident or citizen of the U.S., employed by a Participating Employer at a participating Company (Company Code) and
specified location (Location Code), as indicated in Schedule B (including individuals temporarily assigned to non-US locations); or 

(2) Is not a U.S. resident or citizen, but is employed by a Participating Employer at a participating Company (Company Code) and
specified location (Location Code), as indicated in Schedule B on a long term assignment and has been localized to that location’s payroll and benefits; and 

(b) Is a Full-time or Part-time Employee, and receives regular compensation in the form of: (1) a weekly, semimonthly or monthly
salary, (2) periodic commissions, (3) an hourly wage; and 
 (c) Is not in a unit of employees covered by a collective
bargaining agreement, unless such agreement provides for the application of the Plan to the employees in such unit and does not provide for supplemental unemployment benefits or similar benefits; and 

(d) Is not in a group of employees excluded from coverage under the Plan by the Benefits Management Committee, or the appropriate
governing body of a Participating Employer, which is uniform in application to all employees similarly situated; and 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	4	 	









 (e) Is not a U. S. resident or citizen who is on the Company’s U.S. expatriate
payroll and benefit program; and 
 (f) Is not an agency, leased, or contract employee (as determined by the Company, without regard
to any court, or agency decision determining common-law employment status) or is an individual who is not on the payroll of the Company and receiving a W-2. A “leased employee” is defined in Section 414(n) of the Code and is excluded
from participation in the Plan. (For purposes of this Plan only, any former leased employee, upon becoming an Eligible Employee, will receive Continuous Service credit for all prior service performed with the recipient Participating Employer as a
leased employee prior to becoming an Eligible Employee.) 
 (g) Is a Temporary Employee who, in addition to meeting the above
described terms and conditions (other than (b)), has at least one year of Continuous Service. 
 EMPLOYER RETIREMENT INCOME CONTRIBUTIONS
(also “ERIC”) means an amount equal to the percentage of Eligible Compensation specified in Section 5 that is contributed to Eligible Employees hired or rehired on or after March 1, 2006, or as indicated in Schedule B, to the
Eligible Employees of a specified location without regard to date of hire or rehire. Effective as of January 1, 2009, employees who i) whether or not citizens of the U.S., transfer from a location outside of the U.S. to a participating U. S.
location and are localized, or ii) are not U.S. citizens and were participants in the Global Pension Plan as of December 31, 2008, will receive ERIC contributions without regard to original date of hire or rehire. For purposes of this
paragraph, “localized” means to be paid from a U.S. location payroll. 
 Effective January 1, 2010, employees employed at a
company and location that does not participate in Alcoa Retirement Plan I as of December 31, 2009, who were hired or rehired prior to March 1, 2006, and who transfer on or after January 1, 2010 to a company and location that receives
ERIC under this Plan as indicated in Schedule B, will commence to receive ERIC contributions following the transfer, regardless of their date of hire. 

EMPLOYMENT COMMENCEMENT DATE means the date on which an Eligible Employee is first employed by and performs an Hour of Service for
Alcoa, a Subsidiary or an Affiliate as a Full-Time or Part-Time Employee, or with respect to an individual described in subsection (g) of the definition of Eligible Employee, a Temporary Employee. 

ERISA means the Employee Retirement Income Security Act of 1974 as amended. 

ESOP or EMPLOYEE STOCK OWNERSHIP PLAN means the Alcoa Stock Fund as described in Section 16(e). 

FINANCIAL HARDSHIP means an immediate and heavy financial need which a Participant is not able to meet from other reasonably available
resources. An immediate and heavy financial need includes: 
 (a) Extraordinary medical expenses incurred by the Participant, the
Participant’s spouse, dependents of the Participant, or primary Beneficiary; 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	5	 	









 (b) Purchase, excluding mortgage payments, of a principal residence for the Participant;

 (c) Payment of tuition for the next year of post-secondary education for the Participant, his or her spouse, children , dependents
or primary Beneficiary; 
 (d) Expenses necessary to prevent eviction of the Participant from his principal residence, or foreclosure
on the mortgage of the Participant’s principal residence; 
 (e) Funeral expenses of a family member or primary Beneficiary; and

 (f) All other expenses that the Internal Revenue Service will accept as an immediate and heavy financial need. 

A withdrawal will be deemed to be necessary to satisfy an immediate and heavy financial need of a Participant if all of the
following requirements are satisfied: 
 (i) The withdrawal is not in excess of the amount of the immediate and heavy
financial need (including taxes on such withdrawal) of the Participant, 
 (ii) The Participant has obtained all
distributions, other than hardship withdrawals, and all nontaxable loans currently available under all plans maintained by the Participating Employer (unless such a loan would contribute to the hardship), 

(iii) The Plan, and all other qualified and non-qualified plans of deferred compensation maintained by all Participating
Employers (other than health and welfare or contributory defined benefit plans), provide that the Participant’s Savings will be suspended for at least 6 months after receipt of the hardship withdrawal, and 

(iv) The Participant may not contribute Pre-Tax Savings to the Plan or make similar contributions to other plans
maintained by the Participating Employer for the following taxable year in excess of the applicable limit under Section 402(g) of the Code for the following taxable year minus the Participant’s Pre-Tax Savings for the taxable year of the
hardship withdrawal. 
 Based upon the foregoing provisions, the Designee determines whether or not a Participant has incurred a Financial Hardship. 

FULL-TIME EMPLOYEE means an active employee who works 100 percent of a regular work schedule for the location where he or she is
employed. 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	6	 	









 HOUR OF SERVICE means: 

(a) Each hour for which an employee is paid or entitled to payment for the performance of duties for Alcoa, a Subsidiary or Affiliate;

 (b) Each hour for which an Employee is paid or entitled to payment by Alcoa, a Subsidiary or Affiliate on account of a period
during which no duties are performed, whether or not the employment relationship has terminated, due to vacation, holiday, illness, incapacity (including disability), layoff, jury duty, military duty, or leave of absence; and 

(c) Each hour for which back pay, irrespective of mitigation of damages, is either awarded or agreed to by Alcoa, a Subsidiary or
Affiliate, excluding any hour credited under (a) or (b) above, which is credited to the computation period or periods to which the award, agreement or payment pertains, rather than to the computation period in which the award, agreement or
payment is made. 
 INVESTMENT FUND means any Core Fund and the Brokerage Account. 

KEY EMPLOYEE means any employee or former employee (including any deceased employee) who at any time during the Plan Year that includes
the determination date, as defined in Section 416(g)(4)(C) of the Code, was i) an officer of a Participating Employer having annual compensation greater than $170,000 (as adjusted under Section 416(i)(1) of the Code, ii) a five percent
owner of the Participating Employer, or iii) a one percent owner of a Participating Employer having annual compensation of more than $150,000. For this purpose, annual compensation means compensation as defined in Section 415(c)(3) of the Code,
but includes amounts contributed by the Participating Employer pursuant to a salary reduction agreement which are excludable from the Participant’s gross income under Section 125, 402(a), Section 401(h), Section 401(b), and
Section 132(f)(4). 
 LAYOFF or LAID-OFF means the absence from employment due to a reduction of a Participating
Employer’s work force due to lack of work, where it is intended that the Participant will be subject to recall and the Participant is not on been placed on a Temporary Layoff. A Layoff ends on the earlier of the effective date of a recall or
the date the Participant’s service terminates, and such Layoff has continued for at least twenty-four months calculated from the first day of the Lay Off. 

NORMAL RETIREMENT AGE means the time a Participant attains age 65. 

PART-TIME EMPLOYEE means an active employee who works at least 50 percent but less than 100 percent of the regular work schedule for
the location where he or she is employed. 
 PARTICIPANT means: 

(a) an Eligible Employee who has elected to participate in the Plan in accordance with the provisions of Section 1, or who
receives Employer Retirement Income Contributions, 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	7	 	









 
Discretionary Contributions or Restricted Discretionary Contributions, or who is Automatically Enrolled in the Plan. Such a person continues as a Participant so long as he or she has an account
balance in the Plan. Notwithstanding the foregoing, a contractor, agency employee, temporary employee or “leased employee” as defined in Section 414(n) of the Code is not a Participant under the Plan, or 

(b) an Eligible Employee who is employed with a Participating Employer on December 31 of any Plan Year where such Participating
Employer has elected to make a Discretionary Contribution or Restricted Discretionary Contribution for that Plan Year. 
 PARTICIPATING
EMPLOYER means Alcoa, except as specified hereafter, and any other entity in which Alcoa or one or more Subsidiaries or Affiliates have an ownership interest, and that is authorized by Alcoa to participate in the Plan and which adopts the Plan
by proper action of its board of directors or other governing body, provided that each said entity agrees to reimburse Alcoa from time to time upon demand for its proper portion of the expenses and contributions required to carry out the provisions
hereof and of the agreement under which the assets of the Plan are held or managed. Schedule B lists applicable locations of Participating Employers. 

PARTICIPATING EMPLOYER CONTRIBUTIONS means amounts contributed by a Participating Employer as determined under Section 3. 

PARTICIPATION DATE means the date on which an Eligible Employee commences participation in the Plan. 

PAYROLL DEDUCTIONS means the Pre-Tax Savings and After-Tax Savings based on a reduction of the Participants’ Eligible Compensation
for the applicable Payroll Period. 
 PAYROLL PERIOD means the regularly scheduled payroll cycles in which a Participant earns
Eligible Compensation. 
 PERMANENT LAYOFF means an absence from employment due to a reduction of the work force by a Participating
Employer due to lack of work, where it is intended that the Participant will not be subject to recall. A Participant’s Continuous Service for purposes of the Plan will be terminated on the first day of Permanent Layoff. 

PERMANENT SHUTDOWN means the permanent shutdown, as determined by a Participating Employer, of a plant, department or substantial
portion thereof, of a Participating Employer at which a Participant who is affected thereby is employed. 
 PLAN means the Alcoa
Retirement Savings Plan for Hourly Non-Bargaining Employees. 
 PLAN ADMINISTRATOR means Alcoa. 

PLAN YEAR means the calendar year. 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	8	 	









 PRE-TAX CATCH-UP CONTRIBUTIONS means contributions permitted under Section 414(v) of
the Code, as described in Section 2(j) of the Plan. 
 PRE-TAX SAVINGS means the amount by which a Participant has elected to
reduce his or her Eligible Compensation and defer the receipt thereof in accordance with Section 2 and the contribution of the said amount to the Plan, or an amount by which a Participant’s Eligible Compensation is deferred and contributed
to the Plan pursuant to Automatic Enrollment. 
 PROPERLY RECEIVED means any request to participate, request to change participation
in the Plan, request for suspension of Payroll Deductions, a request for a transfer between investments in accordance with Sections 8 or 9, or a request for a withdrawal in accordance with either Section 10 or 11, or a Beneficiary designation,
consent or revocation in accordance with Section 22, are Properly Received provided it is received by the Plan Administrator or its Designee in accordance with uniform rules established by the Plan Administrator. 

QUALIFIED DEFAULT INVESTMENT ALTERNATIVE or QDIA means the Targeted Maturity Funds to which the Plan may direct the assets of a
Participant’s account in the absence of Participant investment direction. Each Participant’s account will be invested in the appropriate Targeted Maturity Fund based on the Participant’s year of birth. 

REEMPLOYMENT COMMENCEMENT DATE means the date on which a Participant is first reemployed by a Participating Employer following a
Severance from Service Date. 
 RESTRICTED DISCRETIONARY CONTRIBUTIONS means amounts contributed by a Participating Employer as
determined under Section 4(b). 
 RETIREMENT means termination of Continuous Service with rights to a pension other than a
deferred vested pension benefit under a retirement plan of Alcoa and/or a Subsidiary and/or an Affiliate, termination of Continuous Service upon or after attainment of age 55 and completion of 10 years of Continuous Service, or Normal Retirement Age

 ROLLOVER CONTRIBUTION means an eligible rollover distribution as described in Section 402(c)(4) of the Code, or a direct
transfer of an eligible rollover distribution as described in Section 401(a)(31) of the Code (“Direct Rollover”) which is transferred to the Plan pursuant to Section 7. 

SAVINGS means the total amount of Pre-Tax Savings and After-Tax Savings contributed to the Plan in accordance with Section 2. 

SEVERANCE FROM SERVICE DATE means the date Continuous Service terminates and is the earliest of: (i) the first date the Eligible
Employee quits, retires, is discharged (including Permanent Layoffs), or dies, (ii) the first anniversary of the first date the Eligibile Employee is absent from work due to a Temporary Layoff, or (iii) the second anniversary of the first
date the Eligible Employee is absent from work for any other reason (including a disability). 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	9	 	









 
Notwithstanding the foregoing, an employee will not be deemed to have terminated from Continuous Service until the second anniversary of the employee’s absence, if the absence is due to the
pregnancy of the Eligible Employee, the birth of a child of the Eligible Employee or the placement of a child with the Eligible Employee in connection with adoption proceedings, or for purposes of caring for that child for a period beginning
immediately following such birth or placement. The period between the first anniversary and second anniversary of the first day of absence will not constitute Continuous Service. Severance from Service Date will also mean the date on which a
participant ceases employment with Alcoa or a Subsidiary in connection with a sale of assets or interest in a Participating Employer and commences employment with the purchaser of such assets or interest, provided there is no transfer to the
purchaser of Plan assets and liabilities relating to such participant. 
 SUBSIDIARY means a corporation a majority of whose voting
stock is owned or controlled by Alcoa and/or one or more other Subsidiaries. 
 TARGETED MATURITY FUNDS means the investment vehicles
that are pre-mixed funds consisting of varying asset allocations that follow an investment strategy based on a targeted retirement date. Targeted Maturity Funds are Core Funds. 

TEMPORARY EMPLOYEE means a person who does not work on a regular schedule, or works less than fifty percent of the regular hours for
the location where he or she is employed, or works fifty percent or more of the regular hours for the location but is hired for a specified period of time not to exceed twelve month. 

TEMPORARY LAYOFF means an absence from employment due to a reduction of the work force by a Participating Employer due to lack of work,
where it is intended that the Participant will not be subject to recall or the Participant has been designated as a temporary recall in the Company’s human capital management system (currently, the Global People System), but where there is an
expectation that the Participant may return to work within the calendar year. A Participant’s Continuous Service will be terminated on the first anniversary of the first day of Temporary Layoff. 

TOTAL AND PERMANENT DISABILITY means disability by injury or disease which, on the basis of medical evidence satisfactory to a medical
doctor chosen by the Benefits Management Committee, prevents the employee from engaging in any employment with Alcoa, a Subsidiary or Affiliate suitable to his or her training and experience and will be permanent and continuous during the remainder
of the employee’s life, and the employee is not otherwise employed by Alcoa, a Subsidiary or Affiliate. 
 TRUSTEE means the
Trustee or Trustees appointed by the Board in accordance with the provisions of Section 18. 
 U.S. means United States of
America. 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
	Amended and Restated Effective as of January 1, 2015	  	10	 	









 VARIABLE COMPENSATION AWARDS means performance pay, profit sharing or gain sharing awards
or other variable compensation awards as determined by the Participating Employer and approved by the Plan Administrator. 
 GENERAL
PROVISIONS 
 SECTION 1. PARTICIPATION 

An Eligible Employee participates in the Plan: 

(a) by submitting application or request for participation that is Properly Received, or by receiving Discretionary Contributions,
Restricted Discretionary Contributions, Participating Employer Contributions, or Employer Retirement Income Contributions; or 
 (b)
by being Automatically Enrolled sixty days following Employment Commencement Date or Reemployment Commencement Date, or after an employee employed on a temporary basis becomes an Eligible Employee. 

(c) by being Automatically Enrolled sixty (60) days following the initial participation of a new Company or Location resulting
from an acquisition or restructuring of a business unit. 
 SECTION 2. EMPLOYEE SAVINGS 

(a) An Eligible Employee may elect to pay into the Plan through Payroll Deductions properly authorized by such employee, a whole
percentage of his or her Eligible Compensation as Pre-Tax Savings in an amount equal to one through twenty-five percent (25%), and After-Tax Savings equal to one through ten percent (10%), the aggregate of which cannot be greater than twenty-five
percent (25%). 
 (b) An Eligible Employee subject to Automatic Enrollment will be subject to automatic Payroll Deductions equal to
three percent of Eligible Compensation for any applicable payroll period, which will be contributed to the Plan as Pre-Tax Savings. Absent the Participant’s election of investment funds, such Pre-Tax Savings will be deposited into the
appropriate QDIA, as described in Section 8(a). 
 (c) Payroll Deductions for Pre-Tax Savings made pursuant to Automatic
Enrollment are subject to Automatic Pre-Tax Rate Escalation whereby, providing the Participant has participated in the Plan at least ninety days, the Participant’s Pre-Tax Savings rate will be increased by one percent on each April 1 after
his or her Participation Date until the Pre-Tax Savings rate attains a target rate of six percent of Eligible Compensation. A Participant may change the percentage rate in whole percentages up to the maximum permitted by the Plan or opt out of
Automatic Pre-Tax Rate Escalation at any time in a manner designated by the Plan Administrator that is Properly Received. 

  

					
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 Any Participant may elect to begin or end Automatic Pre-Tax Savings Rate Escalation at any time
in a manner designated by the Plan that is Properly Received. An election to begin Automatic Pre-Tax Saving Rate Escalation shall designate a beginning Pre-Tax Savings rate, a target rate up to the maximum permitted by the Plan, and an annual rate
(in whole percentages) by which the Pre-Tax rate increases until the target rate is attained. 
 (d) Any employee contributions which
have been contributed to a Participant’s account under a qualified defined contribution plan of a Participating Employer which has been merged with this Plan, are credited to the Participant as Pre-Tax and After-Tax Savings Accounts, as
applicable, as determined by the Plan Administrator, and thereafter be treated like Pre-Tax and After-Tax Savings with respect to withdrawals, loans, and investment options under the Plan. Any protected optional form of benefits provided under said
qualified defined contribution plan will be maintained under the Plan. 
 (e) All Participating Employer Contributions and
Discretionary Contributions, and Restricted Discretionary Contributions and Employer Retirement Income Contributions are irrevocable, except that any such contribution which was made by a mistake of fact or conditioned upon qualification of the Plan
or any amendment thereof under Section 401 of the Code or upon the deductibility of the contribution under Section 404 of the Code, will be returned to the Participating Employer within one year after the payment of the contribution made
by mistake, the denial of the qualification or the disallowance of the deduction (to the extent disallowed), whichever is applicable. 

(f) A Participant may change his or her election for Payroll Deductions, effective for the first full Payroll Period following the date
that such request is Properly Received. 
 (g) A Participant may direct that Payroll Deductions for Savings be discontinued beginning
with the first full Payroll Period following the date that such direction is Properly Received. A Participant may direct that such deductions be resumed beginning with the first full Payroll Period following the date that such direction is Properly
Received, except as provided in the definition of Financial Hardship. 
 (h) Payroll Deductions are paid to the Trustee as soon as
practicable, but no later than the period prescribed by the Department of Labor for depositing contributions. 
 (i) Additional
limitations on Savings, Participating Employer Contributions, Discretionary Contributions and Restricted Discretionary Contributions are provided in Appendices A, B and C. 

Notwithstanding the foregoing, in the event it is determined by the Benefits Management Committee or its designee that for any particular
month the maximum percentage of Eligible Compensation which a Participant may elect to pay into the Plan as Pre-Tax Savings must be reduced so as to prevent the actual percentage of Pre-Tax Savings for Participants who are Highly Compensated
Employees from exceeding the elected percentage of Pre-Tax Savings of all other Participants, pursuant to the limitations in the Appendices, the maximum percentage of Pre-Tax Savings for said Highly Compensated Employees may be reduced, for any
particular 

  

					
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Month to the extent deemed necessary by the Benefits Management Committee or its designee. The said Participants’ previously elected percentage of After-Tax Savings will not be affected in
any manner by a reduction of the maximum percentage of Pre-Tax Savings in accordance with the foregoing. 
 (j) An Eligible Employee
who meets the requirements listed below may make an election for a Plan Year to defer extra Pre-Tax Catch-Up Contributions in an amount that equals an annual maximum amount of six thousand dollars ($6,000), or such other amount adjusted for
cost-of-living increases as may be provided by the Secretary of the Treasury pursuant to Section 414(v)(2) (C) of the Code. Eligible Employees who meet the requirements are individuals who i) have attained 50 or will attain age 50 during
the applicable Plan Year; ii are contributing no less than six percent (6%) of Eligible Compensation in Pre-Tax Savings; and iii) have submitted an election to make Pre-Tax Catch-Up Contributions for applicable Plan Year. 

(k) A Participant who’s compensation is suspended due to an absence from employment due to military leave protected by Uniformed
Services Employment and Reemployment Rights Act of 1994 (“USERRA”), may upon his or her return to employment contribute “make up” Pre-Tax Contributions equal to the amount he or she would have contributed except for the absence
based upon the Participant’s election on file. Such make up contributions must be paid to the Plan during a period that does not exceed the lesser of three (3) times the length of time of the military leave or five (5) years,
commencing from the date employment is resumed. 
 SECTION 3. PARTICIPATING EMPLOYER CONTRIBUTIONS (MATCH) 

Participating Employer Contributions will be allocated under the Plan to the account of those Participants for whom Pre-Tax Savings are paid
into the Plan for such Payroll Period in accordance with Section 2, where the Participating Employer with whom the Participant is actively employed has elected to make such contributions. Beginning with the first Participating Employer
contribution allocated to Participants’ accounts after January 1, 2014, all Participating Employer Contributions will be invested in the same Core Funds elected by the Participant for his or her current Savings (or if none, then in the
QDIA). 
 A Participating Employer may elect to make Participating Employer Contributions of a specific amount for each dollar of the
Participant’s Eligible Compensation he or she contributes to the Plan as Pre-Tax Savings up to six percent of the Participant’s Eligible Compensation. Unless disapproved by the Benefits Management Committee, a Participating Employer’s
election to make or change a Participating Employer Contribution for current and future Plan Years may be made at any time during the Plan Year and continue until changed by the Participating Employer. Schedule B provides a list of Participating
Employers and Participating Employer Contributions. Subject to the provisions of Section 6 relating to the application of forfeitures of Participating Employer Contributions, the amount of all such Contributions are contributed on a Payroll
Period basis by the Participating Employer out of current income or accumulated earnings. 

  

					
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 Any employer contributions which have been contributed to a Participant’s account under a
qualified defined contribution plan of a Participating Employer which has been merged with this Plan, are credited to the Participant as Participating Employer Contributions and thereafter be treated like Participating Employer Contributions with
respect to withdrawals, loans, and investment options under the Plan. Any protected optional form of benefits provided under said merged qualified defined contribution plan will be maintained under the Plan. 

SECTION 4. DISCRETIONARY CONTRIBUTIONS 

(a) A Participating Employer for each Plan Year may contribute under the Plan to the account of those Eligible Employees who are
employed with said Participating Employer on the last day of the Plan Year such amounts of Discretionary Contributions as its board of directors or in the case of an Affiliate, the appropriate governing entity determines, unless disapproved by the
Benefits Management Committee. Discretionary Contributions are allocated to Eligible Employees based on either uniform dollar amounts or whole or partial percentages of Eligible Compensation. A Participating Employer may elect to make one
Discretionary Contribution for any Plan Year on or before December 31 of said Plan Year and may direct the Trustee to promptly invest such amount in the Alcoa Stock Fund. 

(b) A Participating Employer for each Plan Year may contribute under the plan to the account of those Eligible Employees who are
employed with said Participating Employer on the last day of the Plan Year, Restricted Discretionary Contributions in an amount determined by its board of directors or in the case of an Affiliate, the appropriate governing entity, unless disapproved
by the Benefits Management Committee. Restricted Discretionary Contributions will be allocated to Eligible Employees based on either uniform dollar amounts or whole or partial percentages of Eligible Compensation. A Participating Employer may elect
to make one Restricted Discretionary Contribution for any Plan Year on or before December 31 of the Plan Year. The Restricted Discretionary Contribution will be paid to the Trustee no later than the date fixed by law for the filing of the
Participating Employer’s federal income tax return for the year for which the contribution is made, including any extensions of time granted by the Internal Revenue Service for filing the return. The Participating employer may direct, but is
not obligated to direct, the Trustee to promptly invest such amount in the Alcoa Stock Fund; otherwise, Restricted Discretionary Contributions will be invested in accordance with the provisions of Section 8(b). 

(c) An Eligible Employee who incurs an absence due to military leave protected by USERRA and eligible to receive Discretionary or
Restricted Discretionary Contributions will receive those contributions based on the Eligible Compensation that would have been received had the individual remained actively employed during the period of military leave. 

SECTION 5. EMPLOYER RETIREMENT INCOME CONTRIBUTIONS (ERIC) 

Employer Retirement Income Contributions of three percent of Eligible Compensation will be made to the accounts of Participants with an
Employment Commencement Date or Reemployment Commencement Date occurring on or after March 1, 2006, on a Payroll Period basis. Notwithstanding the foregoing, Eligible Employees of certain locations designated in


  

					
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Schedule B will receive Employer Retirement Income Contributions as of the date indicated, regardless of the date of their Employment Commencement Date or Reemployment Commencement Date. 

An Eligible Employee who incurs an absence due to military leave protected by USERRA and eligible to receive Employer Retirement Income
Contributions (“ERIC) will receive those contributions based on the Eligible Compensation that would have been received had the individual remained actively employed during the period of military leave. 

Withdrawals of Employer Retirement Income Contributions are permitted by Participants who have attained age 59
 1⁄2. 
 Any person, i) whether or not a citizen
of the U.S., who transfers from a location outside of the U.S. to a participating U.S. location, or ii) who is not a citizen of the U.S. and was a participant in the Global Pension Plan as of December 31, 2008 and transferred from a location
outside of the U.S. to a participating U.S. location, will be eligible for Employer Retirement Income Contributions, regardless of the individuals date of hire. 

SECTION 6. NONFORFEITURE OF PARTICIPATING EMPLOYER CONTRIBUTIONS, DISCRETIONARY CONTRIBUTIONS, RESTRICTED DISCRETIONARY CONTRIBUTIONS, AND EMLOYER
RETIREMENT INCOME CONTRIBUTIONS 
 All Participating Employer Contributions, Discretionary Contributions, Restricted Discretionary
Contributions, and Employer Retirement Income Contributions and any investment earnings attributable thereto held in a Participant’s account are nonforfeitable and are not subject to divestment. 

SECTION 7. ROLLOVER CONTRIBUTIONS 
 An
Eligible Employee of a Participating Employer who is or may become a Participant may, unless disapproved under objective procedures established by the Benefits Management Committee, make a Rollover Contribution to the Plan. An Eligible
Employee’s Rollover Contribution is credited to his or her account and thereafter treated like the Participant’s Pre-Tax Savings with respect to withdrawals, loans and investment options under the Plan. The Plan does not accept Roth
rollovers. 
 SECTION 8. INVESTMENTS 

(a) Savings and Employer Retirement Income Contributions. Pre-Tax Savings (including Rollover Contributions), After-Tax Savings,
and Employer Retirement Income Contributions will be invested, at the election of the Participant, in any of the Core Funds in one percent increments. Prior to June 1, 2008, Pre-Tax Savings of any Participant who is Automatically Enrolled and
Employer Retirement Income Contributions made to the account of a Participant who has not made investment election will be contributed to the Fixed Income 

  

					
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Fund. Effective June 1, 2008, Pre-Tax Savings of any Participant who is Automatically Enrolled and Employer Retirement Income Contributions made to the account of a Participant who has not
made investment election will be contributed to the appropriate QDIA fund, based on the Participant’s date of birth. 
 A Participant
may change his or her current investment election or transfer assets deposited by the Plan into a QDIA fund any day of the Plan Year, to be effective for the next following Payroll Period, within the limitations otherwise provided in this Plan, by
directing the Plan Administrator or its Designee to make such change which direction is Properly Received. 
 (b) Participating
Employer Contributions, Discretionary Contributions and Restricted Discretionary Contributions. All Participating Employer Contributions will be invested in the same Core Funds elected by the Participant for his or her current Savings (or if
none, then in the QDIA). Discretionary Contributions, and Restricted Discretionary Contributions may be invested in the Alcoa Stock Fund if directed by the Participating Employer, subject to Section 9, or otherwise invested in the same Core
Funds elected by the Participant for his or her current Savings (or if none, then in the QDIA). 
 (c) Brokerage Account. A
portion of Pre-Tax or After Tax Savings, and Participating Employer Contributions, Discretionary Contributions, Restricted Discretionary Contributions, or Employer Retirement Income Contributions subject to transfer as provided in Section 9, or
any other amounts invested in the Core Funds may be transferred in amounts of one thousand dollars ($1,000) or more and reallocated to a Brokerage Account, a self-directed brokerage account that allows a Participant to select and personally manage
investment options not otherwise available under the Plan, in accordance with the provisions of Section 16. Any amounts to be withdrawn, loaned or distributed from a Brokerage Account must be first transferred back to the Core Funds, as
described in Section 16(h). 
 (d) Automatic Rebalancing of Investments. A Participant may elect to have his or her
account balance automatically rebalanced, or readjusted, at ninety-day intervals, to equal the percentage(s) directed by the Participant for investing such account balance in any Core Fund(s). The Participant may cancel Automatic Rebalancing at any
time in a manner designated by the Plan Administrator that is Properly Received. 
 SECTION 9. TRANSFERS BETWEEN INVESTMENTS 

(a) Transfers of Savings, Participating Employer, Discretionary, Restricted Discretionary and Employer Retirement Income
Contributions. A Participant may elect to transfer in whole percentage increments or specified dollar amounts all or part of the Current Market Value of the Participants’ Pre-Tax Savings, After Tax Savings, Participating Employer,
Discretionary, Restricted Discretionary and Employer Retirement Income Contributions subject to the following: 
 (1)
transfers from any one or more Core Funds to the Brokerage Account must be made in amounts of one thousand dollars ($1,000) or more; 

  

					
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 (2) transfers may be made on a daily basis; 

(3) investment Fund transfers do not constitute a change in the Participant’s current investment election; and 

(4) transfer provisions may be subject to restrictions imposed by mutual fund companies underlying the Core Funds. 

(b) Effective Date of Transfer. The effective date of any transfer will be the date for which the appropriate direction to the
Plan Administrator or its Designee has been Properly Received. 
 (c) Value of Transfer. The Current Market Value of Savings,
Participating Employer Contributions, Discretionary Contributions, Restricted Discretionary Contributions, and Employer Retirement Income Contributions to be transferred into or out of an Investment Fund are determined in accordance with the value
of the Investment Fund at the close of business of the Business Day on the Effective Date. 
 SECTION 10. WITHDRAWALS DURING EMPLOYMENT 

Withdrawals are not permitted prior to the termination of the Participant’s Continuous Service, except for the following: 

(1) Upon attainment by the Participant of age 59
 1⁄2; or 
 (2) Upon a determination by the Plan
Administrator or Designee that the Participant has suffered a Financial Hardship with respect to Pre-Tax Savings, and Employer Contributions contributed to the Plan prior to January 1, 2011. 

A Participant may withdraw the Current Market Value of After-Tax Savings at any time (subject to a $250.00 minimum). Effective the first Business Day a
Participant has attained three Years of Plan Participation, he or she may voluntarily withdraw all or a portion (subject to a $250.00 minimum) of the Current Market Value of Participating Employer Contributions and Discretionary Contributions mad to
the Plan prior to January 1, 2011. 
 SECTION 11. DISTRIBUTIONS UPON TERMINATION OF EMPLOYMENT 

(a) A Participant whose Continuous Service terminates is eligible to receive as a distribution the Current Market Value of all Savings,
Participating Employer Contributions, Discretionary Contributions, Restricted Discretionary Contributions, and Employer Retirement Income Contributions made to the Participant’s accounts. In the event a Participant who has terminated employment
received a total distribution of the Current Market Value of his or her account under the Plan has a Reemployment Commencement Date, he or she will not be permitted to repay the distributed amount other than as a Rollover Contribution from an
eligible retirement plan described in Sections 402(c)(4) and 401(a)(31) of the Code, as provided in Section 7. 

  

					
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 (b) Direct Rollovers. 

(i) Notwithstanding any provision of the Plan to the contrary that would otherwise limit a distributee’s election under this subsection, a
distributee may elect, at the time and in the manner prescribed by the Plan Administrator, to have any portion of an eligible rollover distribution paid directly to an eligible retirement plan specified by the distributee in a direct rollover. 

(ii) Definitions: 
 (1)
Eligible rollover distribution: An eligible rollover distribution means any distribution to an employee of all or any portion of the balance to the credit of the employee in the Plan, and as otherwise described in this subsection (1). An eligible
rollover distribution does not include any distribution that is one of a series of substantially equal periodic payments (not less frequently than annually) made for the life (or life expectancy) of the distributee or the joint lives (or joint life
expectancies) of the distributee’s designated Beneficiary; or for a specified period of ten years or more; any distribution to the extent such distribution is required under Section 401(a)(9) of the Code; and any amount distributed on
account of hardship. 
 (2) Eligible Retirement Plan: An eligible retirement plan is an individual retirement account or individual
retirement annuity described in Sections 408(a) and 408(b) of the Code; a qualified trust described in Section 401(a) of the Code that accepts the distributee’s eligible rollover distribution; an annuity plan or contract described in
Sections 403(a) and 403(b) of the Code; or an eligible plan under Section 457(b) of the Code which is maintained by a state, political subdivision of a state, or any agency or instrumentality of a state or political subdivision of a state that
agrees to separately account for amounts transferred into such plan from this plan. The definition of eligible retirement plan will also apply in the case of a distribution to a surviving spouse of a Participant or the spouse or former spouse who is
the alternate payee under a qualified domestic relations order as defined in Section 414(p) of the Code. With respect to an eligible rollover distribution to a Participant’s nonspouse Beneficiary, an eligible retirement plan is an
individual retirement account or annuity described in Sections 408(a) and 408(b) of the Code established for the purpose of receiving such distribution, and identifying the deceased Participant and Beneficiary. 

(3) Distributee: A distributee includes an employee or former employee. In addition, the employee’s or former employee’s surviving
spouse and the employee’s or former employee’s spouse or former spouse who is an alternate payee under a qualified domestic relations order, as defined in Section 414(p) of the Code, are distributees with regard to the interest of the
spouse or former spouse. A distributee includes the employee’s or former employee’s nonspouse Beneficiary, provided the transfer of the eligible rollover distribution is made as described in paragraph (4) below. 

(4) Direct Rollover: A direct rollover is a payment by the Plan to the eligible retirement plan specified by the distributee. 

  

					
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 SECTION 12. PAYMENT OF DISTRIBUTIONS UPON TERMINATION OF EMPLOYMENT 

(a) Subject to the following provisions of this Section, payment to a Participant or Beneficiary of the Current Market Value of all
Savings, Participating Employer Contributions, Restricted Discretionary Contributions, and Employer Retirement Income Contributions in the Participant’s account from any Investment Fund, other than the Alcoa Stock Fund, upon the
Participant’s termination of Continuous Service is made in cash. All amounts held in the Alcoa Stock Fund at the time of the Participant’s termination of Continuous Service are paid in cash or Company Stock. Such payment will be made in
accordance with the following rules: 
 (i) If the Current Market Value of all of the Participant’s vested account balances (not
including Rollover Contributions) in all qualified defined contribution plans of Alcoa, the Subsidiaries and Affiliates is less than one thousand dollars ($1,000), then a total distribution of all of the Participant’s vested account balances
will be made to the Participant at a time determined by the Plan. If the Current Market Value of all of the Participant’s vested account balances (not including Rollover Contributions) in all qualified defined contribution plans of Alcoa, the
Subsidiaries and Affiliates (i) is greater than one thousand dollars ($1,000) but less than five thousand dollars ($5,000), the distribution will be paid in a direct rollover to an individual retirement account designated by the Benefits
Management Committee unless the Participant, or Beneficiary if applicable, elects to have such distribution paid directly to an eligible retirement plan specified by the Participant or Beneficiary in a direct rollover or to receive the distribution
directly in cash. The value of any delisted stock that is no longer publicly traded but that is held in the Participant’s Brokerage Account shall not be considered for purposes of the preceding valuation. Any such delisted stock shall be
distributed in-kind where the value of the Participant’s vested account balances (not including Rollover Contributions) in all qualified defined contribution plans of Alcoa, the Subsidiaries and Affiliates is less than five thousand dollars
($5,000), in a direct rollover to an individual retirement account designated by the Benefits Management Committee. Upon such distribution of de-listed stock, the amounts distributed will be reported for income tax purposes using reasonable methods
available at such time and determined by the Plan. 
 (ii) If the Current Market Value of all of the Participant’s vested account
balances in all defined contribution plans of Alcoa, the Subsidiaries and Affiliates exceeds five thousand dollars ($5,000), the distribution is made upon the consent of the Participant, or surviving spouse if applicable, and if no consent is given
and no claim for benefits has been made, such distribution is made in total upon upon the later of December 31, 2015, or his or her attainment of age 69. Notwithstanding the foregoing, if a Participant attains age 70 prior to December 31,
2015, such distribution shall be made in total upon such Participant’s attainment of age 70. Prior to the distribution of the total Current Market Value of the Participant’s total account balance, the Participant, or the Beneficiary in the
case of a Participant who dies with an account balance in the Plan, may request four partial distributions (subject to a $250.00 minimum) during each Plan Year in which the account balance is maintained in the Plan. Notwithstanding the foregoing, in
the event that a claim for benefits is made, a distribution is made no later than the 60th day after the latest of the last day of the Plan Year in which occurs: 

  

					
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(1) the date on which the Participant attains the earlier of age 65, (2) occurs the tenth anniversary of the year in which the Participant commenced participation in the Plan, or
(3) the Participant terminates his or her service with the Participating Employer. 
 (iii) If a distribution is one to which Sections
401(a)(11) and 417 of the Code do not apply, such distribution may commence less than 30 days after the notice required under Section 1.411(a)-11(c) of the Income Tax Regulations is given, provided that: 

a. the Plan Administrator clearly informs the Participant that the Participant has a right to a period of at least 30 days
after receiving the notice to consider the decision of whether or not to elect a distribution (and, if applicable a particular distribution option), and 

b. the Participant, after receiving the notice, affirmatively elects a distribution. 

(iv) If the Participant dies with an account balance in the Plan, the entire interest of the Participant will be distributed not later than 5
years after the death of the Participant. 
 (b) Upon any distribution of Company Stock from the Alcoa Stock Fund, the Trustee
delivers to the recipient a certificate representing the number of whole shares of Company Stock being distributed and cash equal to the Current Market Value on the Effective Date of distribution of any fractional interest in a share being
distributed. With respect to any shares of Company Stock which are to be sold for the account of the recipient, the Trustee may, at its option (1) purchase such shares for Plan purposes at the Current Market Value on the Effective Date of
distribution, or (2) sell such shares on the open market for the account of the recipient. 
 (c) Notwithstanding the foregoing
provisions of this Section, distribution of a Participant’s account balances commences the April 1 next following the calendar year in which the Participant attains age 70-1/2 years after January 1, 1988 and in accordance with
Section 13(b). 
 (d) Notwithstanding the foregoing, if a Participant is reemployed by a Participating Employer, then
distribution of his or her account balances other than minimum required distributions under Section 401(a)(9) of the Code, if any, payable to him or her during the period of his or her reemployment is suspended until his or her subsequent
termination from employment. Upon his or her subsequent termination from employment, the Participant’s account balances are paid in accordance with the foregoing provisions of this Section 12. 

(e) Notwithstanding paragraphs (a) and (b) above, in the event that any qualified defined contribution plan is merged with
this Plan or this Plan is the surviving plan with respect to any assets of Participants of a merging plan which are transferred to this Plan, any distribution options contained in the merging plan which are not contained in this Plan may be
continued to be distribution options available to the said Participant of the merging plan for distribution of his or her account, in accordance with Section 411(d)(6) of the Code. 

  

					
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 SECTION 13. GENERAL PROVISIONS WITH RESPECT TO WITHDRAWALS 

(a) Effective Date of Withdrawal. The Effective Date of any withdrawal from the Plan is the Business Day such request for
withdrawal is Properly Received by the Plan Administrator or its Designee. 
 (b) Distribution Limitations. Distribution of
all amounts payable under the Plan to a Participant commences: 
 (i) Not later than (1) the required distribution dates
or (2) the required distribution date, without violating Treasury regulations, if any, over the life of the Participant or over the lives of the Participant and a Beneficiary, or over a period not extending beyond the life expectancy of the
Participant and a Beneficiary. 
 (ii) If distribution of the Participant’s interest in the Plan has begun in accordance
with paragraph (i)(2) and the Participant dies before his or her entire interest is distributed, the Participant’s remaining interest in the Plan will be distributed at least as rapidly as under the method of distribution stated under paragraph
(i)(2) above being used on the date of the Participant’s death. If the Participant dies before the distribution of his or her interest in the Plan has begun in accordance with paragraph (i)(2), the entire interest of the Participant will be
distributed not later than five years after the death of the Participant. 
 For purposes of this paragraph (b), the “required
distribution date” means the date prescribed by Treasury Regulations, as amended from time to time, which effective January 1, 1988, is April 1 of the calendar year following the calendar year in which the Participant attains age
70-1/2. 
 For the purposes of this paragraph (b), any amount paid to a minor child is treated as if it had been paid to the surviving
spouse if such amount will become payable to the surviving spouse upon such child reaching majority or any other designated event as may be permitted by Treasury Regulations, if any. 

(c) Appendix D, Minimum Distribution Requirements, provides the Plan provisions to comply with Section 401(a)(9) of the Code and
Treasury Regulations §1.401(a)(9)-2 through -9, as applicable, relating to required minimum distributions. 
 SECTION 14. NONASSIGNABILITY 

Except as required under ERISA, no right or interest, of any Participant or Beneficiary in the Plan or in such Participant’s accounts is
(a) assignable or transferable or subject to any lien in whole or in part, either directly or by operation of law or otherwise, including, but not by way of limitation, alienation, execution, levy, garnishment, attachment, pledge, bankruptcy or
in any other manner, other than a transfer as a result of death or mental incompetence, or (b) liable for, or subject to, any obligation or liability of such Participant or Beneficiary. Such portions of the


  

					
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Savings, Participating Employer Contributions, Discretionary Contributions, Restricted Discretionary Contributions, and Employer Retirement Income Contributions in the account of a Participant as
are payable to another in accordance with the provisions of a “qualified domestic relations order,” as defined in Section 414(p) of the Code and any applicable regulations thereunder, are distributed to the party designated in and in
accordance with said order. The Effective Date of withdrawal for any such distribution is the first Business Day following the Plan Administrator’s determination that the said order is in compliance with Section 414(p) of the Code and any
applicable regulations thereunder and such distribution is made as soon as administratively practical thereafter. The Plan Administrator or Designee has promulgated procedures to determine whether a domestic relations order is a qualified domestic
relations order. The procedures will be provided to a participant or alternate payee upon written request, or upon receipt of the domestic relations order by the Plan Administrator or Designee. 

SECTION 15. EXTENT OF PARTICIPANT’S RIGHTS 

(a) General. No person has any interest in or right to any part of the assets held under the Plan or the income thereon, except
as and to the extent expressly provided in the Plan. 
 At the time of withdrawal by a Participant or Beneficiary he or she will receive
shares or cash. There is no guarantee that the Current Market Value of any investment will be equal to or greater than the amount of the Participant’s Savings therein. This Plan is designed to comply with and operate under Section 404(c)
of ERISA. A Participant and his or her Beneficiaries assume all risk in connection with any decrease in the value of any investments allocated to such Participant’s account. For purposes of Section 404(c)(1) of ERISA, in the absence of
Participant or Beneficiary investment direction, a Participant or Beneficiary shall be treated as having exercised control over the assets invested in any investment which qualifies as a QDIA in accordance with Section 404(c)(5) of ERISA and
the regulations promulgated thereunder. 
 The Plan does not and should not be construed as conferring any rights upon any person for a
continuation of employment, nor does it interfere with the rights of Alcoa or any Subsidiary or Affiliate to terminate the employment of any person or to take any personnel action affecting such person without regard to the effect which such action
might have upon such person or his or her Beneficiaries as a prospective recipient of benefits under the Plan. 
 (b) Military
Service. Notwithstanding any provision of this Plan to the contrary, contributions, benefits and service credit with respect to qualified military service will be provided in accordance with Section 414(u) of the Internal Revenue Code.

 SECTION 16. MANAGEMENT OF FUNDS 

(a) General. Savings, Participating Employer Contributions, Discretionary Contributions, Restricted Discretionary Contributions,
and Employer Retirement Income Contributions paid to the Trustee are invested as provided in the Plan. 
 (b) Trustees and Investment
Managers. The Board or its designee has the responsibility to appoint, review the performance of, and remove where deemed appropriate, one 

  

					
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or more Trustees, and one or more investment managers each of which is a bank, insurance company or other investment adviser qualified under Section 3(38) of ERISA. The duties of each
Trustee and manager, to the extent not set forth in the Plan, are set forth in a trust agreement or other written documents approved by the Board or its designee. Except as otherwise provided in such documents or in the Plan, each such investment
manager has sole investment control and management responsibility with respect to those assets of the Plan for which it is designated the investment manager. The Board may delegate its authority to appoint an investment manager, to remove an
investment manager, to approve and direct the execution by the proper officer or officers of Alcoa of amendments to agreements with any investment manager and to review the performance of any such managers. Such delegation also includes the
authority to approve written documents setting forth the duties of any manager and to direct the execution of investment management agreements by the proper officer or officers of Alcoa. No Trustee has any investment responsibility for any assets
which are subject to the investment control of another investment manager and as to such assets it only has custodial duties if it is the custodian. 

(c) Designation of Investment Strategy. The Board may from time to time designate, as to part or all of the assets of the Plan,
that a separate fund or funds be established. Except as otherwise provided in the Plan, as to each such separate fund the Board or its designee may specify the investment strategy to be employed and the investment manager is thereupon relieved of
responsibility for assuring that the specified investment strategy creates suitable diversification of the overall assets of the Plan, provided that such investment manager has followed such specifications. 

(d) (1) Acquisition of Fixed Income Investments by the Trustee. The Trustee will enter into investment arrangements with
insurance companies, banks or money managers, as directed by an investment manager duly appointed by the Board or its designee for the Fixed Income Fund. The Trustee will invest all Savings and other amounts to be invested in the Fixed Income Fund
in accordance with such directions. 
 (2) Accounting for Participant’s Accounts. Participants’ investments in the
Fixed Income Fund are accounted for on a unit basis. The Trustee allocates to the accounts of each Participant such units in the Fixed Income Fund as may be acquired with funds (if any) in such Participant’s accounts to be invested therein.
Such allocations will be made in a uniform manner as determined by the Benefits Management Committee. Transfers and withdrawals are valued based on the Current Market Value per unit on the Effective Date of the transfer or withdrawal. 

(e) (1) Acquisition of Company Stock by Trustee. The Savings, Participating Employer Contributions, Discretionary Contributions,
Restricted Discretionary Contributions, and Employer Retirement Income Contributions to be invested in the Alcoa Stock Fund are used by the Trustee to purchase from time to time shares of Company Stock (i) from Alcoa, at the Current Market
Value thereof, or (ii) to the extent Alcoa does make shares available for purchase by the Trustee for such purpose, on the open market, unless Alcoa otherwise directs, or (iii) by the exercise of warrants or rights as provided in this
Section. The Trustee, to the extent reasonable, invests any cash held in the fund in cash equivalents (including commercial paper). 

  

					
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The Trustee also holds for the purpose of allocation to the accounts of individual Participants as hereinafter provided (i) shares of such stock which the Trustee has acquired upon
withdrawal by a Participant, and (ii) shares of such stock which the Trustee has acquired pursuant to Participants’ elections to transfer investments under the provisions of Section 9. All shares of such stock purchased by the Trustee
are carried in the accounts of the Trustee at the actual cost thereof, including any taxes, commissions, etc. which are not paid by the Participating Employer, incident to the purchase except that shares acquired upon the exercise of warrants or
rights are carried at the Current Market Value of such shares on the date of such exercise. 
 (2) Allocation of Stock to
Participants’ Accounts. Participants’ investments in the Alcoa Stock Fund are accounted for on a unit basis. The Trustee allocates to the accounts of each Participant such units in the Alcoa Stock Fund as may be acquired with funds
(if any) in such Participants’ accounts to be invested therein. Such allocations are made in a uniform manner as determined by the Benefits Management Committee. Transfers and withdrawals are valued based on the Current Market Value per unit on
the Effective Date of the transfer or withdrawal. 
 (3) Allocation of Dividends to Participants’ Accounts. In valuing
the units, dividends are accounted for on the date the Board declares the dividend. Once received, dividends are invested in the Alcoa Stock Fund. A Participant may elect to receive an annual distribution of the dividends posted to their account
during the Plan Year. Such election must be made prior to the last dividend record date in the Plan Year, and distribution will be made as soon as administratively practical following the date the final dividends are posted to the Participant’s
account. Distribution will be paid in a lump sum from the Alcoa Stock Fund. To the extent the Participant’s account balance in the Alcoa Stock Fund is insufficient to pay the dividends, the balance of the distribution will be paid pro-rata from
the Participant’s other Core Fund investments. 
 (4) Warrants & Purchase Rights. A Participant has no right of
request, direction or demand upon the Trustee to exercise in his or her behalf warrants or rights to purchase shares of common stock or other securities of Alcoa, except as otherwise determined by the Board. The Trustee, in its discretion, may
exercise or sell any warrants or rights to purchase shares of Company Stock appertaining to shares of such stock held by the Trustee and may sell any warrants or rights to purchase other securities of Alcoa appertaining to shares of such stock held
by the Trustee. 
 (5) Stock Splits & Dividends. Shares of Company Stock received by the Trustee by reason of a stock
split or stock dividend become part of the Alcoa Stock Fund. 
 (6) Voting. The Trustee exercises its voting rights in
accordance with written directions of each Participant with respect to at least the number of whole shares of Company Stock held by it in the Participants’ accounts on the record date for voting.. With respect to all other shares of Company
Stock held by the Trustee on the record date for voting (the “Other Shares”), including but not limited to, (i) fractional shares in the Participants’ accounts (if they are not subject to direct voting), (ii) shares for
which it has not received written directions from any Participant, and (iii) any shares which have not yet been allocated to Participants’ accounts, 

  

					
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the Trustee exercises its voting rights in the same proportion (for, against, abstain and so on) on each matter as it exercises its voting rights with respect to shares of Company Stock for which
voting directions were received from all participants in all plans which participate in the Alcoa Stock Fund. 
 (f) (1) Acquisition
of Other Investments by Trustee. Alcoa has and in the future will enter into investment arrangements with various investment managers. Any such arrangements must be approved by the Benefits Management Committee. Expenses incurred in
connection with the purchase or sale of securities by the investment manager are paid from the applicable Investment Fund. 
 (2)
Accounting for Participant’s Accounts. Effective January 1, 2011, Participants’ investments in the Core Funds are accounted for on a unit basis. The Trustee allocates to the accounts of each Participant such units in each
of the Core Funds as may be acquired with funds (if any) in such Participant’s accounts to be invested therein. Such allocations will be made in a uniform manner as determined by the Benefits Management Committee. Transfers and withdrawals are
valued based on the Current Market Value per unit on the Effective Date of the transfer or withdrawal. 
 (g) Transition
Provision. Pending investment under an arrangement established pursuant to this Section and pending distribution to Participants following withdrawal from such an arrangement, cash is invested by the Trustee in short-term fixed income
securities or cash equivalents (including commercial paper) and the value of such securities or cash equivalents is allocated to the accounts of Participants in an equitable manner determined by the Benefits Management Committee. 

(h) Brokerage Account. Participant’s have the right to invest and personally manage investments outside of the Core Funds
by investing through the Brokerage Account offered by a broker selected by the Plan (“Broker”). Investment options through the Brokerage Account are mutual funds (other than those already available as Core Funds), any taxable equity or
fixed income security publicly traded in a U.S. security market (including American Depository Receipts), and money market funds. Pre-Tax Savings, After-Tax Savings, Rollover Contributions, Participating Employer Contributions, Discretionary
Contributions Restricted Discretionary Contributions, and Employer Retirement Income Contributions that are subject to transfer as provided in Section 9, may not be directly invested in the Brokerage Account, nor may withdrawals, distributions
or loans be made directly from the Brokerage Account. Such transactions must be processed through the Core Funds. 
 (1) Restrictions
of Trading in the Brokerage Account. Certain restrictions apply to investment vehicles that may be available through the Brokerage Account. Specifically, the following investments are not available through the Brokerage Account: Alcoa
company stock (common or preferred) and bonds; funds currently available in the Core Funds; tax-free funds; securities of publicly traded limited partnerships; options contracts; purchase on short sales, futures, precious metals, and currencies;
real estate (other than funds); annuities; life insurance policies; collectibles; commodities; foreign stocks (not American Depository Receipt); and margin trading and trade-away trades that are placed by another broker and settle with the Broker.


  

					
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 (2) Trading within the Brokerage Account. Investment purchases in the Brokerage
Account may be made after such amounts are transferred from the Participant’s Core Fund accounts. Transfers from Core Funds may be made as provided in Section 9. Transferred funds will be held in the Broker’s money market fund until
the Participant’s buy orders are received by the Broker. Trades may be subject to initial and subsequent investment minimums required by a mutual fund. 

Transfers are made out of the Brokerage Account and into the Core Funds from the Schwab Money Market Fund. If there are insufficient funds to
make the requested transfer, the participant must submit a sell order with Schwab. The proceeds of securities sold will be invested automatically in the Broker’s money market fund and will be subsequently transferred out of the Brokerage
Account to the Core Funds as directed by the Participant. 
 (3) Expenses Incurred by Trading and Voting. The Broker’s
standard commission schedule will be deducted from the Brokerage Account of the Participant who initiates the trades, and any other fees and expenses incurred through the Brokerage Account will be paid directly by the Participant. 

The Broker will execute proxies for any securities held in the Brokerage Account accounts in accordance with written directions of any
Participant. 
 OTHER PROVISIONS OF THE PLAN 

SECTION 17. LOANS 
 (a) A
Participant may borrow a proportion of the Current Market Value of his or her Savings, Participating Employer and Discretionary Contributions which are eligible for transfer under Section 9 of this Plan (“Eligible Loan Account
Balance”). 
 A Participant may not borrow Restricted Discretionary Contributions or Employer Retirement Income Contributions. In
addition, a Participant may not borrow Participating Employer Contributions, or Discretionary Contributions, made on or after January 1, 2011 or investment gains thereon. 

A Participant shall pay a $100 processing fee, or such other amount as may be designated by the Plan Administrator, for each loan request. The
fee will be included in the loan amount, subject to the limitations of this Section 17, and deducted prior to distribution of the loan. 

  

					
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 (b) A loan to a Participant, when added to the balance of any other outstanding loans the
Participant has under the Plan, cannot exceed the lesser of: 
 (1) $50,000 reduced to the extent of the highest outstanding
loan balance of the Participant’s loans outstanding during the 365 day period immediately preceding the date on which the loan is made; or 

(2) 50% of the sum of the Participant’s (A) Eligible Loan Account Balance, plus (B) Restricted Discretionary
Contributions and vested portion of Employer Retirement Income Contributions balances. 
 A Participant may refinance any general purpose
loan for any reason at any time (but only once in a twelve-month period), as may be permitted under the Code or ERISA. 
 (c) Each
loan to a Participant is secured by a promissory note under which the Participant pledges and grants the Trustee an interest in the Participant’s Eligible Loan Account Balance to the extent of the unpaid loan. 

(d) All loans to Participants are treated as investments of plan assets in their respective accounts. All principal and interest
associated with a Participant’s repayment of a loan are credited to his or her Plan account. 
 (e) The Plan Administrator has
developed a procedure in accordance with the Code and ERISA under which such loans from the Plan will be made available to Participants, which procedure has been approved by the Benefits Management Committee. 

(f) Loan repayments will be suspended under this Plan during a period of military service as permitted under Section 414(u)(4) of
the Internal Revenue Code and the regulations promulgated under Section72(p) of the Code. Upon the Participant’s return to active employment, loan repayments will resume and the period of repayment extended in direct proportion of the
Participant’s period of absence for military leave. 
 SECTION 18. TRUST 

All assets of the Plan are held in trust for the Plan, except as otherwise permitted by applicable law. Alcoa has entered into a trust
agreement with a national banking association which acts as Trustee under the Plan. The Board or its designee may, from time to time, amend such trust agreement (subject to its terms), remove such Trustee or any Successor Trustee and upon removal or
resignation of a Trustee, appoint a Successor Trustee. 
 SECTION 19. ADMINISTRATION 

(a) Duties of Plan Administrator. The Plan Administrator or its Designee are responsible for the preparation and the filing with
governmental agencies or the furnishing to Participants and Beneficiaries, of all summaries, descriptions, annual and other reports, notices and other documents and information which are required to be so prepared and filed or furnished under ERISA
or the Code, retain appropriate records and also have all of the other responsibilities and duties of the administrator of the Plan as set forth in ERISA, except as otherwise provided in the Plan. Each Participating Employer by whom a Participant is
employed furnishes to the Plan Administrator or its Designee any records required for the foregoing. 

  

					
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 (b) The Benefits Management Committee. Except as provided in Section 16 and in
paragraph (a) of this Section, the complete authority to control and manage the operation and administration of the Plan is placed in the Benefits Management Committee, which consists of one or more persons appointed from time to time by the
Board. 
 (c) Duties of Benefits Management Committee. Subject to the limitations of the Plan, the Benefits Management
Committee has the discretionary authority to: (1) construe and interpret the Plan, (2) interpret administrative forms and other information, (3) make credibility findings, and (4) establish supplemental regulations for the
administration of the Plan and the transaction of its business. All actions, determinations and interpretations of the Benefits Management Committee will be performed in a uniform and nondiscriminatory manner to all Participants in similar
circumstances. All interpretations of the Plan and determinations of disputed questions made by the Benefits Management Committee are conclusive, final and binding upon the Participating Employers, Participants, Beneficiaries, other employees and
any other individuals claiming rights under the Plan, subject to a claimant’s request under paragraph (e) of this Section to have the Benefits Management Committee review the denial of a claim. When making an interpretation or
determination, the Benefits Management Committee is entitled to rely upon information furnished by the individual, Participant, Beneficiary or Participating Employer, unless in accordance with an appeals procedure established by the Benefits
Management Committee the claimant establishes to the satisfaction of the Benefits Management Committee that Continuous Service, compensation or other records are erroneous. 

(d) Application for Benefits. Each person applying for a benefit under the Plan must furnish all information required under
procedures approved by the Benefits Management Committee. 
 (e) Review of Denial of Benefits. If any applicant’s claim
for benefits under the Plan is denied, the applicant will be notified in writing of such denial. Such notice will set forth the specific reasons for such denial and will be written in a manner calculated to be understood by the applicant. The
applicant will be afforded a reasonable opportunity for a full and fair review by the Benefits Management Committee or its Designee of the decision denying his or her claim for benefits, in accordance with a claims procedure which the Benefits
Management Committee adopts. After the final determination of an appeal by the Benefits Management Committee or its Designee, the applicant must file any litigation arising out of the underlying facts or circumstances giving rise to such claim and
appeal, under ERISA or otherwise, within one hundred eighty (180) days following the date of the final notice provided by the Benefits Management Committee or its Designee. 

(f) Extent of Benefits Management Committee’s Responsibility. The members of the Benefits Management Committee will act in
a prudent manner in the performance of their duties. No member will be personally liable by virtue of any contract, agreement, bond or other instrument made or executed by or on behalf of such member as a member of the Benefits Management Committee.
To the extent permitted by ERISA, no member of the Benefits 

  

					
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Management Committee will be liable for any mistake of judgment made by himself or herself or any other member, nor for any loss, unless resulting from his or her own gross negligence or willful
misconduct, and no member will be liable for the neglect, omissions or wrongdoing of any other member thereof, or of the agents or counsel of the Benefits Management Committee. To the extent permitted by law, Alcoa will indemnify and save harmless
each member of the Benefits Management Committee against all expenses and liabilities arising out of his or her services as such, except for expenses and liabilities arising from such member’s own gross negligence or willful misconduct as
determined by the Board. 
 (g) Relationship to Other Fiduciaries. Each fiduciary in carrying out its responsibilities under
the Plan may rely upon any direction, information or action of another fiduciary as being proper under this Plan or the documents under which the assets of the Plan are managed, and is not required to inquire into the propriety of any such
direction, information or action. It is intended under this Plan and such documents that each fiduciary is responsible for the proper exercise of its own powers, duties, responsibilities and obligations under this Plan and such documents and is not
responsible for any act or failure to act of another fiduciary, except as otherwise provided by ERISA. 
 (h) Multiple
Fiduciaries. Any person or group of persons may serve in more than one fiduciary capacity with respect to the Plan. 
 (i)
Further Allocation of Fiduciary Duties. Any two or more fiduciaries named herein or appointed by the Board as provided herein may from time to time agree in writing with respect to the allocation of duties and responsibilities under the
Plan, including fiduciary responsibilities, among the fiduciaries so agreeing, provided however that any reallocation of fiduciary responsibilities clearly allocated by the Plan or by the Board requires prior approval of the Board. 

(j) Delegation of Fiduciary Duties. Any fiduciary named herein or appointed by the Board as provided herein may designate
another person or persons to carry out any or all of the duties and fiduciary responsibilities which it has under the Plan and which are specified in such designation except that no Trustee may delegate fiduciary responsibilities with respect to
investment functions without the prior approval of the Board. 
 (k) Delegation of Ministerial Duties. Any fiduciary named
herein, appointed by the Board as provided herein or designated under paragraph (j) above may delegate ministerial duties as follows: employ one or more persons to render advice, including legal and accounting services, with regard to any
responsibility such fiduciary has under the Plan; may appoint ministerial agents (including brokers or others who may execute investment transactions); and may delegate to others its clerical and other non-fiduciary functions. 

(l) No Added Remuneration for Employees. No member of the Benefits Management Committee and no other person who renders services
to or for the Plan may receive remuneration for services as such if he or she also is an employee of Alcoa, a Subsidiary or Affiliate. 

  

					
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 SECTION 20. AMENDMENT, MODIFICATION, SUSPENSION OR TERMINATION 

(a) Rights Reserved. Alcoa reserves the right, by action of the Board or the Benefits Management Committee, taken in accordance
with the Board’s or Benefits Management Committee’s operating procedures, (1) to amend, modify, suspend or terminate the Plan or to suspend or completely discontinue contributions to the Plan, and (2) to terminate the
Participation in the Plan of any Participating Employer or any designated group of Eligible Employees employed either within or outside the U.S. Any Participating Employer may terminate its participation in the Plan or suspend or discontinue its
contributions under the Plan at any time upon 30 days prior written notice to the Plan Administrator. Such 30 day notice requirement may be waived by the Benefits Management Committee. No such amendment or other action relating to the Plan may
reduce the amounts then credited to any Participant’s account, or provide or have the effect of providing that the securities and funds held in trust for the Plan or the income thereof may be used for or devoted to purposes other than the
exclusive benefit of Participants and their Beneficiaries and for the payment of expenses of the Plan. 
 (b) Sale of Assets,
etc. In the event any assets of any business of any Participating Employer are transferred to another entity by sale, merger, consolidation or otherwise, and the entity to which said assets are transferred has in effect, or thereupon
establishes, a tax-qualified plan and related trust for the exclusive benefit of employees which qualify under the applicable provisions of the Code, all assets under the Plan, held in the accounts of Participants who continue in the employment of
the transferee entity, may be transferred and paid, for their respective accounts, to the trust for the tax-qualified plan of said transferee entity, provided that any such transfer of investments will be effected in such manner as to preclude, for
federal income tax purposes, a termination of the Plan or the constructive receipt of benefits thereunder with respect to said Participants. 

(d) Transfer of Plan Assets. 

(1) Notwithstanding the foregoing, in the event of any merger or consolidation of the Plan with, or a transfer of any of the assets and
liabilities of the Plan to any other plan, each affected Participant must (as if such plan were terminated immediately after such merger, consolidation or transfer) be entitled to a benefit under such other plan which is equal to or greater than the
benefit he or she would have been entitled to receive under the Plan immediately prior to such merger, consolidation or transfer (as if the Plan had then terminated). In the event that assets are transferred to this Plan from any other plan
sponsored by Alcoa or any Subsidiary or Affiliate, each Participant who has assets transferred from such plan or plans will be entitled to a benefit under this Plan which is equal to or greater than the benefit he or she had under such other plan.
Any protected optional form of benefits provided under said plan may be maintained under this Plan. These provisions do not constitute a guaranty against investment losses. 

(2) In the event a participant in a plan named below (“Alcoa Savings Plans”), becomes an Eligible Employee under this Plan, all of
the participant’s accounts in the applicable Alcoa Savings Plan will be transferred to analogous accounts in this Plan as soon as reasonably practical after the Plan Administrator or Designee receives notice. 

  

					
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 Alcoa Retirement Savings Plan for Bargaining Employees; 

Alcoa Retirement Savings Plan for Salaried Employees; and 

Alcoa Retirement Savings Plan for Fastening Systems Employees. 

(3) In the event a Participant ceases to be an Eligible Employee under this Plan and the Participant becomes an eligible employee under one of
the Alcoa Retirement Savings Plans listed in (2) above, all of the Participant’s accounts will be transferred to analogous accounts in the applicable Plan, as soon as reasonably practical after the Plan Administrator or Designee receives
notice and the Participant ceases to be a Participant, and will be entitled to no further benefits under this Plan. 
 SECTION 21. ADMINISTRATIVE
EXPENSES 
 Except as otherwise provided in the Plan, all costs and expenses incurred in administering the Plan, including the expenses
of the Benefits Management Committee, the fees and expenses of the Trustee, the fees and charges payable under the investment arrangements, and other legal and administrative expenses, are paid by the Plan. 

Investments in the Core Funds will be subject to an administrative expense fee, which will be used to pay the expenses of the Plan. Initially
the fee will be set at five basis points per year, and will be charged on a daily basis. The fee will be periodically adjusted by the Plan Administrator based on the actual expenses of the Plan. 

SECTION 22. SELECTION OF BENEFICIARIES 

(a) Designation of Beneficiary. Subject to such administrative procedures as may be adopted from time to time, the Beneficiary
with respect to all of the assets in the accounts of a Participant will be Participant’s spouse if then living, or if not, the Participant’s estate. With the written notarized consent of a Participant’s spouse, a Participant may file
with the Plan Administrator or its Designee a written designation of a Beneficiary or Beneficiaries other than his or her spouse. In the event the designation of such other Beneficiary is revoked in writing by the Participant, his or her spouse will
become the Beneficiary of said assets until such time as the Participant, with his or her spouse’s written notarized consent, designates in writing another Beneficiary or Beneficiaries. 

In the event a Participant certifies that he or she does not have a spouse, a Beneficiary or Beneficiaries with respect to all or part of the
assets in the accounts of the Participant may be designated or revoked by the sole action of the Participant. 
 If there is no designated
Beneficiary, or if no Beneficiary is living at the time of the Participant’s death, the Beneficiary is the Participant’s spouse if then living, or if not, the Participant’s estate. 

  

					
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 Written designations of a primary Beneficiary or a contingent Beneficiary to receive the assets
of a Participant in the case where the primary Beneficiary is deceased, spousal consents, and revocations are made on a form or forms approved by the Plan Administrator. Any such written designation, consent or revocation become effective on the
calendar day on which such designation, consent or revocation is Properly Received. After the death of a Participant, a properly designated Beneficiary may name his or her own Beneficiary to receive a distribution of the Beneficiary’s account
balances when the Beneficiary is deceased (“Subsequent Beneficiary”). A Subsequent Beneficiary shall receive a total distribution of the Subsequent Beneficiary’s account balance within the greater of: (i) ninety (90) days
after death of the Beneficiary who named such Beneficiary or (ii) five (5) years of the Participant’s death. 
 (b)
Other Payments. In case of incapacity of a Participant or Beneficiary entitled to a benefit under the Plan, benefit payment are made to such person’s legal representative who makes claim therefore, or if no such claim has been
received, to such other person or persons as the Benefits Management Committee, utilizing objective criteria, selects from among dependents, next of kin or friends. Any payment of a benefit under the Plan in accordance with the provisions of this
Section is a complete discharge of any liability for the payment of such benefit under the Plan. 
 SECTION 23. PARTICIPANT’S STATEMENT 

A statement showing each Participant’s interest in each of the Plan’s Investment Funds will be made available at least quarterly.

 SECTION 24. EFFECTIVE DATE OF PLAN 

The Plan is amended and restated effective January 1, 2015. 

SECTION 25. CONSTRUCTION 
 It is intended
that the Plan conform to the applicable requirements of ERISA and the Code, and that the Plan and related trust agreement are considered one if and to the extent necessary for compliance therewith. Except to the extent otherwise provided in ERISA
and the Code, the Plan is construed, regulated and administered under the laws of the Commonwealth of Pennsylvania, including its applicable statute of limitations (as such may be superceded by any limitations period provided under the terms of the
Plan). 

  

					
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 APPENDIX A 

LIMITATIONS AND DISCRIMINATION TESTING 

1. Pre-Tax Savings for any Plan Year of a Participant is subject to the following limitations: 

(a) The applicable limit as defined in Treasury Regulation section 1.402(g)-1(d) with respect to the Pre-Tax Savings of this Plan and
elective deferrals of all other plans, contracts, or arrangements of the employer; 
 (b) if the Participant is a Highly Compensated
Employee with respect to any Participating Employer for that year, the amount that may be made on his or her behalf in compliance with the special discrimination tests of Sections 401(k) and 401(m) of the Code for that year, as applied separately to
each Plan; 
 (c) the amount deductible by the Participating Employer for that year under Section 404 of the Code; and 

(d) the maximum permitted amount under Appendix B of the Plan. 

2. To conform the operation of the Plan to the requirements of Sections 401(k) and 401(m) of the Code and the limitations of Paragraphs (1)(a) and
(1)(b) above with respect to any Participant, the Plan Administrator may, without that Participant’s consent: 
 (a)
prospectively modify or revoke his or her election to have Savings, Participating Employer Contributions, Discretionary Contributions, and Restricted Discretionary Contributions made on his or her behalf, 

(b) distribute to him or her the amount by which the Pre-Tax Savings made on his or her behalf for any Year exceeds the limitation of
Paragraph (1)(a) above for that year plus the amount of any income allocable to such excess (but not more than his Pre-Tax Savings account balance) by the April 15 next following the end of that Plan Year; 

(c) distribute to him or her the amount by which the Pre-Tax Savings made on his or her behalf for any Plan Year exceeds the
limitations of Paragraph (1)(b) above for that year (as determined in accordance with Section 401(k)(8)(B) of the Code) plus the amount of any income allocable to such excess (but not more than his Pre-Tax Savings account balance) by the
end of the Plan Year following the Plan Year for which the amounts were contributed; and 
 (d) make appropriate adjustments to his
or her Pre-Tax Savings account to reflect such distributions. 

  

					
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 3. Such modification or revocation described in 2. above is made only if necessary under one of the
following circumstances: 
 (a) to ensure that the discrimination tests of Section 401(k) of the Code governing permissible
levels of Pre-Tax Savings contributions for both the ESOP and non-ESOP portions of the Plan are met for such Plan Year, or to ensure that one of the following Average Actual Deferral Percentage tests are met for both the ESOP and non-ESOP portions
of the Plan for such Plan Year; 
 (b) to ensure that a Participant’s annual additions for any calendar year will not exceed the
limitations of Appendix B; or 
 (c) to ensure deductibility of the Employer’s entire contribution to the Plan for federal
income tax purposes. 
 4. Definitions. For purposes of this Appendix A, the following terms are defined as follows: 

(a) “Actual Deferral Percentage” means the ratio, expressed as a percentage calculated to the nearest one-hundredth of one
percent, of the amount of Pre-Tax Savings on behalf of an Eligible Employee for a Plan Year to the Eligible Employee’s Compensation for the Plan Year, whether or not the employee was a Participant for the entire Plan Year. A Highly Compensated
Employee’s Savings include such savings for the Plan Year which is in excess of the limitations set forth in Section 415(c)(1) of the Code (“Excess Pre-Tax Savings”), but exclude Excess Pre-Tax Savings for Non Highly Compensated
Employees. Any Eligible Employee who does not elect to make Pre-Tax Savings and who does not receive Qualified Matching Contributions for a Plan Year will have zero Actual Deferral Percentage for the Plan Year. 

(b) “Average Actual Deferral Percentage” means, for the group of Eligible Employees who are Highly Compensated Employees for
a Plan Year or the group of Eligible Employees who are Non-Highly Compensated Employees for the Plan Year, the average of the Actual Deferral Percentages of all Eligible Employees in such group for the Plan Year. 

(c) “Average Contribution Percentage” means, for the group of Eligible Employees who are Highly Compensated Employees for a
Plan Year or the group of Eligible Employees who are Non-Highly Compensated Employees for the Plan Year, the average of the Contribution Percentages of all Eligible Employees in such group for the Plan Year. 

(d) “Contribution Percentage” means the ratio, expressed as a percentage calculated to the nearest one-hundredth of one
percent, of the sum of Participating Employer Contributions (other than Qualified Matching Contributions treated as Elective Deferrals under paragraph 7 of this Appendix) and any After-Tax Savings on behalf of an Eligible Employee for a Plan Year to
the Employee’s Compensation for the Plan Year, whether or not the employee was a Participant for the entire Plan Year. For these purposes, an Eligible Employee’s Contribution Percentage for any Plan Year is calculated by excluding any
forfeitures of Excess Aggregate Contributions allocated to the Eligible Employee’s account for the Plan Year. 

  

					
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 (e) “Compensation” means the total amount of compensation (within the meaning of
Section 415(c)(3) of the Code, and subject to the limitation of Section 401(a)(17) of the Code) received by an employee from the Employer while an Eligible Employee under the Plan during the Plan Year. An Eligible Employee’s
Compensation for a Plan Year includes all Pre-Tax Savings made to the plan for the Plan Year, and all other such employee savings made by the Employer for the Plan Year to any other plan on behalf of the employee that are not currently includible in
the gross income of the employee under Sections 125, 132(f)(4), 402(a)(8), 402(h) or 403(b) of the Code, provided that Alcoa has elected to treat all such elective contributions as compensation with respect to all employees under all plans of the
Participating Employer. 
 In applying the limitation of Section 401(a)(17) of the Code, effective January 1, 1997, the family
aggregation rules under this Appendix no longer apply. 
 (f) “Eligible Employee” means, with respect to any Plan Year, any
employee who is eligible to commence participation in the Plan under Section 1 of the Plan and to have Savings made to the Plan under Section 2 of the Plan for the Plan Year, regardless of whether any contributions are made to the Plan on
behalf of the employee for the Plan Year. 
 (g) “Excess Contributions” means, with respect to any Plan Year, the excess of
the aggregate amount of Pre-Tax Savings, including Qualified Matching Contributions treated as Elective Deferrals under paragraph 7 of this Appendix, actually made to the Plan on behalf of Highly Compensated Employees for the Plan Year over the
maximum amount of such contributions permitted under paragraph 5 of this Appendix. 
 (h) “Excess Aggregate Contributions”
means, with respect to any Plan Year, the excess of the aggregate amount of Participating Employer Contributions and any After-Tax Savings actually made to the Plan on behalf of Highly Compensated Employees for the Plan Year over the maximum amount
of such contributions permitted under paragraph 9 of this Appendix. 
 (i) “Employer” means Alcoa Inc. and all other
entities as required to be covered under Section 414(c) of the Code. 
 (j) “Family Member” means, with respect to any
Eligible Employee, an individual described in Section 414(q)(6)(B) of the Code. 
 (k) “Highly Compensated Employee”
includes, for any Plan Year, the following Employees: 
 (i) A Highly Compensated Active Employee includes any employee
(other than employees who are non-resident aliens and receive no earned income from sources within the U.S.) who performs service for the Employer during the Determination Year and who during the Look-Back Year: 

(1) was a 5 % owner (within the meaning pursuant to Section 416(i)(1) of the Code) at any time during the year or the
preceding year, or 

  

					
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 (2) for the preceding year received Compensation from the Employer in excess of
$80,000 (as adjusted pursuant to Section 415(d) of the Code) for such year. 
 (ii) A Highly Compensated Former Employee
means: 
 (1) any employee who was a Highly Compensated Employee when the employee separated from service, or 

(2) any employee who was a Highly Compensated Employee at any time after attaining the age 55. 

(l) “Non-Highly Compensated Employee” means, for any Plan Year, an employee who is not a Highly Compensated Employee. 

(m) “Qualified Matching Contributions” means any Participating Employer Contributions to this Plan on behalf of Eligible
Employees, provided that amounts attributable to such contributions are not distributable merely on account of the Employee’s hardship and are immediately vested. 

5. Average Actual Deferral Percentage Test. For each Plan Year, the Plan must satisfy one of the following Average Actual Deferral Percentage tests
with respect to Pre-Tax Savings, and Qualified Matching Contributions treated as Pre-Tax Savings under paragraph 7 of this Appendix, made to both the ESOP and non-ESOP portions of the Plan for the Plan Year: 

(a) the Average Actual Deferral Percentage for the group of Eligible Employees who are Highly Compensated Employees for the Plan Year
will not exceed the Average Actual Deferral Percentage for the group of Eligible Employees who are Non-Highly Compensated Employees for the Plan Year multiplied by 1.25; or 

(b) the Average Actual Deferral Percentage for the group of Eligible Employees who are Highly Compensated Employees for the Plan Year
will not exceed the Average Actual Deferral Percentage for the group of Eligible Employees who are Non-Highly Compensated Employees for the Plan Year multiplied by two, provided that the Average Actual Deferral Percentage for the group of Eligible
Employees who are Highly Compensated Employees for the Plan Year does not exceed the Average Actual Deferral Percentage for the group of Eligible Employees who are Non-Highly Compensated Employees by more than two percentage points. 

(c) The Average Actual Deferral Percentage Test for all contributions to the ESOP portion of the Plan will be computed separately under
this Section. 

  

					
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 6. Special Rules. 

(a) Aggregation of Plans. In the event that this Plan satisfies the requirements of Section 401(a)(4), 401(k) or 410(b) of the Code
only if aggregated with one or more other plans, or if one or more other plans satisfy the requirements of such sections of the Code only if aggregated with this Plan, then the provisions stated herein will be applied by determining the Actual
Deferral Percentages of Employees as if all such plans (excluding other ESOPs) were a single plan. For plan years beginning after December 31, 1989, plans may be aggregated in order to satisfy Section 401(k) of the Code only if they have
the same plan year. Notwithstanding the foregoing, certain plans will be treated as separate if mandatorily disaggregated under regulations under Section 401(k) of the Code. 

(b) In the event the Plan does not pass the ADP test, the test will be disaggregated by removing from the test all participants who
have not attained age 21 and completed one eligibility year within 6 months of the last day of the plan year. 
 (c) All ESOP
portions of the Savings Plan shall be aggregated for ADP with the Non-ESOP portions of the Savings Plan. 
 7. Treatment of Qualified Matching
Contributions. If any Qualified Matching Contributions are made on behalf of Eligible Employees for a Plan Year, Alcoa may elect, in accordance with the regulations of the Secretary of Treasury under Section 401(k) of the Code, to treat all
or a portion of such Qualified Matching Contributions as Pre-Tax Savings for purposes of calculating the Actual Deferral Percentages of Eligible Employees for the Plan Year. Any such Qualified Matching Contributions for a Plan Year must be made no
later than the end of the 12 month period immediately following the close of the Plan Year. 
 8. Correction of Excess Contributions. 

(a) General Rule. If the Plan does not satisfy one of the Average Actual Deferral Percentage tests of paragraph 5 of this Appendix as of
the end of a Plan Year, the Excess Contributions for the Plan Year will be corrected if the Excess Contributions for the Plan Year are timely recharacterized as employee After-Tax Savings contributions in accordance with subsection (c) below or
timely distributed to Highly Compensated Employees in accordance with subsection (d) below. 
 (b) Allocation of Excess
Contributions. Effective for Plan Years beginning after December 31, 1996, in the event the nondiscrimination requirements of paragraph 5 of this Appendix are not satisfied for a Plan Year, the “deferral percentage leveling
method” described in the preceding paragraph is performed as a first step in order to determine the total dollar amount of Excess Contribution to be distributed: a calculation is made to determine the dollar amount of Elective Deferrals
necessary to reduce the deferral percentage of the Highly Compensated Employee with the highest deferral percentage to be equal to the deferral percentage of the Highly Compensated Employee with the next highest deferral percentage, and where
necessary, calculations are made to determine the dollar amounts of reductions of the deferral percentage of subsequent Highly Compensated Employees that may be required in order 

  

					
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to satisfy the nondiscrimination requirements in paragraph 5 of this Appendix. The total dollar amount of Excess Contribution that must be distributed for the Plan Year is the sum of the dollar
amounts so calculated for each Highly Compensated Employee whose deferral percentage is so reduced. 
 Distribution of the total amount of
Excess Contribution determined in the paragraph above is made using the “dollar leveling method.” Excess Contributions of the Highly Compensated Employee with the largest dollar amount of contributions for the Plan Year shall be
distributed to the extent necessary to cause that Highly Compensated Employee’s dollar amount of Excess Contributions to equal the dollar amount of Excess Contributions of the Highest Compensated Employee with the next highest dollar amount of
Excess Contributions for the Plan Year. If the total amount distributed is less than the amount of total Excess Contribution, then both Highly Compensated Employees’ amounts are reduced to the same dollar level of the Highly Compensated
Employee electing the third highest dollar amount and the dollar leveling process is repeated until the total dollar amount that should be reduced as calculated in the above paragraph is distributed. However, if reduction of a lesser amount of
contributions would equal the total dollar amount of Excess Contributions that must be distributed for the Plan Year, the lesser amount is distributed. 

A participant who has had his contributions reduced in accordance with this subparagraph shall have the amount of such reduction paid to him
in cash as soon as practicable, subject to applicable payroll taxes. The amount of the Excess Contributions to be distributed shall be reduced by excess deferrals under 402(g) previously distributed for the Plan Year. The distributions of Excess
Contributions shall include the income allocable thereto, including both the income allocable for the Plan Year for which the Contributions were made and the income for the period between the end of that Plan Year and the date as of which the
distribution is made. Effective January 1, 2008, the distribution of Excess Contributions shall include the income or loss allocable only for the Plan Year of the Excess Contributions, and will not include the income or loss for the period
between the end of the Plan Year and the date distribution is made. In addition, any Company Matching Contributions associated with the Excess Contribution shall be treated as forfeiture and used to reduce the Employer’s contribution under
Section 3 of the Plan. 
 (c) Recharacterization of Excess Contributions. Any recharacterization of Excess Contributions as
employee After-Tax Savings will be accomplished by the Plan Administrator in the manner provided in subsection (b) above within 2  1⁄2 months after the
close of the Plan Year, providing such notices and following such procedures as required by regulations of the Secretary of Treasury, and will be deemed to occur no earlier than the date on which the last Highly Compensated Employee is informed in
writing of the amount of his or her recharacterized Excess Contributions and the consequences thereof. Any Excess Contributions that are recharacterized as employee after-tax contributions for a Plan Year will, in combination with other
Participating Employer Contributions to the Plan for the Plan Year, satisfy the Average Contribution Percentage tests of paragraph 9 of this Appendix for the Plan Year. Any recharacterized Excess Contributions remain nonforfeitable under the Plan
and are subject to the same distribution requirements as Pre-Tax Savings. Recharacterized Excess Contributions are taxable to the Highly Compensated Employee for the year in which the Highly Compensated Employee could have originally elected to
receive the Excess Contributions amount in cash. 

  

					
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 (d) Distribution of Excess Contributions. If any Excess Contributions allocated to Highly
Compensated Employees for a Plan Year are not corrected by recharacterization under (c) above, then such Excess Contributions, plus any income and minus any loss allocable thereto, will be distributed to Highly Compensated Employees no later
than 12 months following the close of the Plan Year. 
 (e) Income or Loss Allocable to Excess Contributions. The income or loss
allocable to the Excess Contributions referred to in subsection (d) above include the allocable income or loss for the Plan Year of the Excess Contributions and the allocable income or loss for the period between the end of the Plan Year and
the distribution of the Excess Contributions, calculated as follows: 
 The income or loss allocable for the Plan Year of the Excess
Contributions is determined by multiplying the total investment income or loss (including dividends, interest, realized gains or losses, and unrealized appreciation or depreciation) allocable to the Participant’s Pre-Tax Savings and amounts
treated as Pre-Tax Savings under paragraph 7 of this Appendix for the Plan Year by a fraction, the numerator of which is the Excess Contributions allocated to the Participant for the Plan Year, and the denominator of which is the total account
balance attributable to the Participant’s Pre-Tax Savings and amounts treated as Pre-Tax Savings under paragraph 7 of this Appendix as of the end of the Plan Year, reduced by the investment gain (or increased by the investment loss) allocated
to such total amount for the Plan Year. 
 Effective January 1, 2008, the income or loss allocable to the Excess Contributions referred
to in subsection (d) above will include only the income or loss allocable for the Plan Year of the Excess Contributions, and not the income or loss for the period between the end of the Plan Year and the distribution of Excess Contributions.

 (f) Coordination with Excess Pre-Tax Savings. The amount of any Excess Contributions to be recharacterized under subsection
(c) above or distributed under subsection (d) above with respect to any Highly Compensated Employee for a Plan Year is reduced by any excess Pre-Tax Savings previously distributed to the Highly Compensated Employee for the employee’s
taxable year ending with or within the Plan Year. 
 (g) Accounting for Excess Contributions. The amount of Excess Contributions
allocated to a Highly Compensated Employee for a Plan Year that is recharacterized under subsection (c) above or distributed under subsection (d) above is attributed first to the Participant’s Pre-Tax Savings for the Plan Year and
then, to the extent such Excess Contributions exceed the Participant’s Pre-Tax Savings for the Plan Year, attributed to amounts treated as Pre-Tax Savings under paragraph 4 of this Appendix in proportion to the amounts of such contributions on
behalf of the Participant for the Plan Year. 
 9. Average Contribution Percentage Tests. For each Plan Year for which Participating Employer
Contributions are made to the Plan (other than Qualified Matching Contributions 

  

					
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treated as Pre-Tax Savings for the Plan Year under paragraph 7 of this Appendix) or any After-Tax Savings are made to the Plan (including any Excess Contributions recharacterized as After-Tax
Savings for the Plan Year under paragraph 8(c) of this Appendix), both the ESOP and non-ESOP portions of the Plan will satisfy one of the following Average Contribution Percentage tests for the Plan Year: 

(a) the Average Contribution Percentage for the group of Eligible Employees who are Highly Compensated Employees for the Plan Year will
not exceed the Average Contribution Percentage for the group of Eligible Employees who are Non-Highly Compensated Employees for the Plan Year multiplied by 1.25; or 

(b) the Average Contribution Percentage for the group of Eligible Employees who are Highly Compensated Employees for the Plan Year will
not exceed the Average Contribution Percentage for the group of Eligible Employees who are Non-Highly Compensated Employees for the Plan Year multiplied by two, provided that the Average Contribution Percentage for the group of Eligible Employees
who are Highly Compensated Employees for the Plan Year does not exceed the Average Contribution Percentage for the group of Eligible Employees who are Non-Highly Compensated Employees by more than two percentage points. 

(c) the Average Contribution Percentage Test applies separately to the ESOP portion of the Plan. 

10. Special Rules. 
 (a) Aggregation of
Plans. In the event that this Plan satisfies the requirements of Section 401(a)(4), 401(m) or 410(b) of the Code only if aggregated with one or more other plans, or if one or more other plans satisfy the requirements of such sections of the
Code only if aggregated with this Plan, then the provisions stated herein will be applied by determining the Contribution Percentages of Employees as if all such plans were a single plan. For plan years beginning after December 31, 1989, plans
may be aggregated to satisfy Section 401(m) of the Code only if they have the same plan year. Notwithstanding the foregoing, certain plans will be treated as separate if mandatorily disaggregated under regulations under Section 401(k) of
the Code. 
 (b) In the event the Plan does not pass the ACP test, the test will be disaggregated by removing from the test all
participants who have not attained age 21 and completed one eligibility year within 6 months of the last day of the plan year. 
 (c)
All ESOP portions of the Savings Plan shall be aggregated for ACP with the Non-ESOP portions of the Savings Plan. 
 11. Treatment of Pre-Tax Savings
as Participating Employer Contributions. 
 Alcoa may elect, in accordance with the regulations of the Secretary of Treasury under
Section 401(m) of the Code, to treat all or a portion of the Pre-Tax Savings made on behalf of Eligible Employees for a Plan Year as Participating Employer Contributions for purposes of 

  

					
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calculating the Contribution Percentages of Eligible Employees for the Plan Year. Any such Pre-Tax Savings for a Plan Year must be made no later than the end of the 12 month period immediately
following the close of the Plan Year. Notwithstanding the preceding, Alcoa may elect to treat Pre-Tax Savings as Participating Employer Contributions for purposes of calculating Contribution Percentages only if one of the Average Actual Deferral
Percentage Tests of paragraph 5 of this Appendix is satisfied before the Pre-Tax Savings are treated as Participating Employer Contribution for the Plan Year, and one of the Average Actual Deferral Percentage Tests of paragraph 5 of this Appendix
continues to be satisfied for the Plan Year excluding the Pre-Tax Savings treated as Participating Employer Contributions for the Plan Year. 
 12.
Correction of Excess Aggregate Contributions. 
 (a) General Rule. If the Plan does not satisfy one of the Average Contribution
Percentages tests of paragraph 9 of this Appendix as of the end of a Plan Year, the Excess Aggregate Contributions for the Plan Year will be corrected by the Employer if the Excess Aggregate Contributions for the Plan Year are forfeited or timely
distributed to Highly Compensated Employees in accordance with subsection (c) below. 
 (b) Allocation of Excess Aggregate
Contributions. Effective as of January 1, 1997, in the event Excess Aggregate Contributions are made to the Plan for a Plan Year, the Contribution Percentage for the Highly Compensated Employee with the largest dollar amount of deferrals
for the Plan Year will be reduced to minimum extent necessary either: 
 (i) to enable the Plan to satisfy one of the Average
Contribution Percentage tests of paragraph 9 of this Appendix for the Plan Year; or 
 (ii) to cause the Highly Compensated
employee’s Contribution Percentage to equal the next highest Contribution Percentage of any Highly Compensated Employee for the Plan Year. 
 This
process is repeated until the Average Contribution Percentage for the group of Eligible Employees who are Highly Compensated Employees for the Plan Year is sufficiently reduced to enable the Plan to satisfy one of the Average Contribution Percentage
tests of paragraph 9 of this Appendix for the Plan Year. The amount of Excess Aggregate Contributions to be allocated to each Highly Compensated Employee for the Plan Year is equal the total After-Tax Savings and Participating Employer
Contributions, including Pre-Tax Savings on behalf of the Highly Compensated Employee for the Plan Year minus the amount determined by multiplying the Highly Compensated Employee’s reduced Contribution Percentage (as determined above) by the
employee’s Compensation for the Plan Year. 
 (c) Forfeiture or Distribution of Excess Aggregate Contributions. Excess Aggregate
Contributions, plus any income or minus any loss allocable thereto, must be forfeited to the extent attributable under subsection (f) below to Participating Employer Contributions that are not vested, and otherwise distributed to Highly
Compensated Employees no later than 12 months following the close of the Plan Year. 

  

					
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 (d) Income or Loss Allocable to Excess Aggregate Contributions. The income or loss
allocable to the Excess Aggregate Contributions referred to in subsection (c) above include the allocable income or loss for the Plan Year of the Excess Aggregate Contributions and the allocable income or loss for the period between the end of
the Plan Year and the distribution of the Excess Aggregate Contributions, calculated as follows: 
 (i) the income or loss
allocable for the Plan Year of the Excess Aggregate Contributions is determined by multiplying the total investment income or loss (including dividends, interest, realized gains or losses, and unrealized appreciation or depreciation) allocable to
the Participant’s After-tax Savings, Participating Employer Contributions, and any other amounts taken into account under this section for the Plan Year by a fraction, the numerator of which is the Excess Aggregate Contributions allocated to
the Participant for the Plan Year, and the denominator of which is the total account balance attributable to the Participant’s After-tax Savings, Participating Employer Contributions and other amounts taken into account under this section as of
the end of the Plan Year, reduced by the investment gain (or increased by the investment loss) allocated to such total amount for the Plan Year; 

(ii) the income or loss allocable to the period (if any) between the end of the Plan Year of the Excess Aggregate Contributions
and the distribution of the Excess Aggregate Contributions by the Plan is determined by multiplying the total investment income or loss allocated to the Participant’s Participating Employer Contributions and amounts treated as Participating
Employer Contributions under paragraph 11 of this Appendix for such period by a fraction determined under the method described in (i) above. In the alternative, the income or loss allocable to the period between the end of the Plan Year of the
Excess Aggregate Contributions and the distribution of the Excess Aggregate Contributions equals 10% of the income or loss allocable to the Participant’s Excess Aggregate Contributions for the Plan Year (as determined under (i) above
multiplied by the number of calendar months that elapse between the end of the Plan Year and the date of distribution. For these purposes, a distribution occurring on or before the fifteenth day of a calendar month is treated as having been made on
the last day of the preceding calendar month, and a distribution occurring after the fifteenth date of a calendar month is treated as having been made on the first day of the following calendar month. 

The income or loss will include only the income or loss allocable for the Plan Year of the Excess Aggregate Contributions, and not the income or loss for the
period between the end of the Plan Year and the distribution of Excess Aggregate Contributions. 
 (e) Coordination with Excess
Contributions. The determination of the amount of Excess Aggregate Contributions for a Plan Year is made after the determination of the amount of any Excess Contributions for the Plan Year. 

(f) Accounting for Excess Aggregate Contributions. The amount of Excess Aggregate Contributions allocated to a Highly Compensated
Employee for a Plan Year is attributed to Participating Employer Contributions and any amounts treated as Participating Employer Contributions in proportion to the amounts of such contributions on behalf of the Participant for the Plan Year. 

  

					
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 13. Recordkeeping Requirements. 

(a) Average Actual Deferral Percentage Tests. The Employer maintains records sufficient to demonstrate satisfaction of the Average
Actual Deferral Percentage tests of paragraph 5 of this Appendix for each Plan Year, and the extent to which any Qualified Matching Contributions are treated as Pre-Tax Savings under paragraph 7 of this Appendix for purposes of such tests. The
determination of Eligible Employees’ Actual Deferral Percentages, and the disposition of all Pre-Tax Savings (and any Qualified Matching Contributions treated as Pre-Tax Savings under paragraph 7 of this Appendix) on behalf of Participants,
must satisfy such other requirements as may be prescribed by the Secretary of Treasury. 
 (b) Average Contribution Percentage Tests.
The Employer maintains records sufficient to demonstrate satisfaction of the Average Contribution Percentage tests of paragraph 9 of this Appendix for each Plan Year, and the extent to which any Pre-Tax Savings are treated as Participating Employer
Contributions under paragraph 11 of this Appendix for purposes of such tests. The determination of Eligible Employees’ Average Contribution Percentages, and the disposition of all Participating Employer Contributions (and any Pre-Tax Savings)
on behalf of Participants, must satisfy such other requirements as may be prescribed by the Secretary of Treasury. 
 14. Distribution of Excess Elective
Deferrals. Excess Elective Deferrals means Pre-Tax Savings that is includible in a Participant’s gross income under Section 402(g) of the Code to the extent it exceeds the dollar limitation. Excess Elective Deferrals are treated as
annual additions under the Plan unless such amounts are distributed no later than the first April 15th following the close of the Participant’s taxable year. Excess Elective Deferrals are adjusted for any income or loss up to the date of
distribution as calculated under paragraph 8(e) and 12(d) of this Appendix. A Participant is deemed to notify the Plan Administrator of Excess Elective Deferrals that arise by taking into account only those Elective Deferrals made to this Plan and
any other plans of the Employer. A Participant may assign any Excess Elective Deferrals made by the Participant to any other plans other than those of the Employer by notifying the Plan Administrator on or before January 15th of the following
year. 

  

					
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 APPENDIX B 

CODE SECTION 415 LIMITATIONS 
 The
limitations imposed by Section 415 of the Code are hereby incorporated by reference. If there is any discrepancy between the provisions of this Plan and the provisions of Code Section 415 and the regulations thereunder, the discrepancy
will be resolved in such a way to give full effect to the provisions of Code Section 415. 
 The maximum annual additions provided by the Plan will be
exactly equal to the maximum amounts permitted under Code Section 415 and the regulations thereunder. In the event a Participant’s annual additions for any Plan Year would exceed the maximum amount of annual additions permitted under Code
Section 415, such Participant’s Savings are automatically reduced, in whole or in part, by the amount required to eliminate such excess. 
 For
purposes of applying the limitations described in this Appendix B, compensation will include any differential pay received by a Participant absent for military leave and any payment earned prior to a Participant’s separation from employment
that is paid within a period ending on the later of i) two and one-half months following the date the Participant separated from employment, or ii) the end of the Plan Year in which the date the Participant separated from employment
(“Post-Separation Compensation”). Post-Separation Compensation will include any payments for vacation, sickness, or leave of absence that otherwise would have been included as compensation had the Participant remained employed. 

  

					
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 APPENDIX C 

TOP HEAVY RULES 
 (a)
This Plan constitutes a “Top Heavy Plan” for a Plan Year if as of the last day of the preceding Plan Year the present value of the cumulative account balances under the Plan for Participants who are Key Employees exceed 60 percent of
the present value of the aggregate of all account balances for all Participants in the Plan. A non-Key Employee means any Participant or former Participant who is not a Key Employee. 

(b) This Plan constitutes a Top Heavy Plan for a Plan Year if the employee benefit plans which make up the group of plans of which this
Plan is considered a part are such that, when aggregated, the sum of (1) the present value of the account balances of Key Employees under all defined contribution plans in the group, and (2) the present value of the cumulative accrued
benefits of Key Employees under all defined benefit plans in the group exceed 60 percent of the sum of such amounts for all employees who participate in the plans in the said group. 

(1) The group of plans in which this Plan is considered a part includes (A) all plans of Alcoa, the Subsidiaries and Affiliates which
enable the particular plans in which a Key Employee participates to meet the qualification requirement of Section 401(a)(4) of the Code or Section 410 of the Code; and, (B) all plans which Alcoa, in its discretion, decides to include,
provided that the inclusion of such plan or plans would not prevent the group of plans from meeting the qualification requirements of Sections 401(a)(4) and 410 of the Code. The date upon which the account balances are valued for purposes of
calculating the top heavy ratio to determine whether or not the Plan is Top Heavy for a particular Plan Year is the determination date, which is the last day of the preceding Plan Year, or in the case of the first plan year of any plan, the last day
of such plan year. 
 (2) Effective for Plan Years beginning on or after January 1, 2002, the amounts of account balances of an
employee as of the determination date are increased by the distributions made with respect to the employee under the plan and any plan aggregated with the plan under Section 416(g)(2) of the Code during the one-year period ending on the
determination date. The preceding sentence also applies to distributions under a terminated plan which, had it not been terminated, would have been aggregated with the plan under Section 416(g)(2)(A)(i) of the Code. In the case of a
distribution made for a reason other than severance from employment, death, or disability, this provision is applied by substituting “five-year period” for “one-year period.” 

(3) Effective for Plan Years beginning on or after January 1, 2002, the accounts of any individual who has not performed services for the
employer during the one-year period ending on the determination date are not taken into account. 

  

					
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 (c) The following provisions are applicable to Participants for any Plan Year with respect
to which the Plan is Top Heavy: 
 (1) The minimum Participating Employer Contribution for a Participant, who is a non-Key Employee and has
not separated from service at the end of the Plan Year, must not be less than three percent of his or her Eligible Compensation for the Top Heavy Plan Year. If said allocation is less than three percent of his or her Eligible Compensation, then said
allocation is the largest percentage allocated to a Key Employee for the Top Heavy Plan Year. In the event the highest rate allocated to a Key Employee for the Top Heavy Plan Year is less than three percent, Pre-Tax amounts contributed to the Plan
are included in determining contributions made on behalf of Key Employees. Compensation for determining a minimum benefit, a minimum contribution and for all other Top Heavy purposes is the Participant’s W-2 earnings for the calendar year that
ends with the Plan Year. 
 Effective for Plan Years beginning on or after January 1, 2002, Participating Employer Contributions used
to satisfy the minimum contribution requirements are treated as Participating Employer Contributions for purposes of the actual contribution percentage test and other requirements of Section 401(m) of the Code. 

(2) With respect to benefits accruing during any Plan Year in which the Plan is Top Heavy, average compensation is limited to amounts not in
excess of the amount permitted under Section 401(a)(17) of the Code. If the accrued benefit as of the end of the last Plan Year before the Plan became Top Heavy is greater than the accrued benefit determined by limiting compensation, that
higher accrued benefit cannot be reduced. 
 (3) In the event the Plan is Top Heavy with respect to a Plan Year and ceases to be Top Heavy
for a subsequent Plan Year, the Participant’s account balance in any such subsequent Plan Year is not less than the Participant’s Pre-Tax Savings (subject to adjustment for earnings) computed as of the end of the most recent Plan Year for
which the Plan was Top Heavy. 
 (d) Notwithstanding any of the above, if a non-Key Employee participates in this Plan and a defined
benefit pension plan included in a required aggregation group which is top heavy, a minimum allocation of five percent of Section 415 compensation is provided under this Plan. The Plan will not be deemed Top Heavy if ninety percent is
substituted for sixty percent in (b)(1) of this Appendix and Participating Employer provides additional contributions to the Plan on behalf of non-Key Employees who participate in both defined benefit and defined contribution plans maintained by a
Participating Employer, in amounts at least equal to the amount set forth in Paragraph (c)(1) of this Appendix as modified by substituting “seven and one-half percent” for “three percent.” If the non-Key Employee does not
participate in a defined benefit plan maintained by Alcoa, a Subsidiary or Affiliate, such employee will receive an additional contribution of four percent. 

(e) For Plan Years in which the Plan meets the safe harbor alternative method of discrimination testing described in Paragraph 16 of
Appendix A, the term “Top Heavy Plan” described in this Appendix C does not apply. 

  

					
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 APPENDIX D 

MINIMUM DISTRIBUTION REQUIREMENTS 

Section 1. General Rules 
 1.1. Effective Date. The
provisions of this Appendix D will apply for purposes of determining required minimum distributions for calendar years beginning with the 2003 calendar year. 

1.2. Precedence. The requirements of this Appendix D will take precedence over any inconsistent provisions of the Plan. 

1.3. Requirements of Treasury Regulations Incorporated. All distributions required under this Appendix D will be determined and made in accordance with
section 401(a)(9) of the Internal Revenue Code and Treasury regulations §§1.401)(a)(9)-2 through -9, which will override any inconsistent distribution provisions of the Plan. Distribution of any incidental death benefit requirements
provided under the Plan will be a distribution for purposes of this Appendix D. 
 1.4. TEFRA Section 242(b)(2) Elections.
Notwithstanding the other provisions of this Appendix D, distributions may be made under a designation made before January 1, 1984, in accordance with section 242(b)(2) of the Tax Equity and Fiscal Responsibility Act (TEFRA) and the provisions
of the Plan that relate to section 242(b)(2) of TEFRA. 
 Section 2. Time and Manner of Distribution. 

 

	2.1.	Required Beginning Date. The Participant’s entire interest will be distributed, or begin to be distributed, to the Participant no later than the Participant’s required beginning date. 


2.2. Death of Participant Before Distributions Begin. If the Participant dies before distributions begin and there is a designated Beneficiary, the
Participant’s entire interest will be distributed to the designated Beneficiary by December 31 of the calendar year containing the fifth anniversary of the Participant’s death. If the Participant’s surviving spouse is the
Participant’s sole designated Beneficiary and the surviving spouse dies after the Participant but before distributions to either the Participant or the surviving spouse begin, this election will apply as if the surviving spouse were the
Participant. This election will apply to all distributions. 
 If there is no designated Beneficiary as of September 30 of the year following the year
of the Participant’s death, the Participant’s entire interest will be distributed by December 31 of the calendar year containing the fifth anniversary of the Participant’s death. 

2.3. Forms of Distribution. Unless the Participant’s interest is distributed in the form of an annuity purchased from an insurance company or in a single
sum on or before the required beginning date, as of the first distribution calendar year distributions will be 

  

					
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made in accordance with sections 3 and 4 of this Appendix D. If the Participant’s interest is distributed in the form of an annuity purchased from an insurance company, distributions
thereunder will be made in accordance with the requirements of section 40l(a)(9) of the Code and the Treasury regulations. 
 Section 3. Required
Minimum Distributions During Participant’s Lifetime. 
 3.1. Amount of Required Minimum Distribution For Each Distribution Calendar Year. During the
Participant’s lifetime, the minimum amount that will be distributed for each distribution calendar year is the lesser of: 
 (a) the
quotient obtained by dividing the Participant’s account balance by the distribution period in the Uniform Lifetime Table set forth in section 1.401(a)(9)-9 of the Treasury regulations, using the Participant’s age as of the
Participant’s birthday in the distribution calendar year; or 
 (b) if the Participant’s sole designated Beneficiary for the
distribution calendar year is the Participant’s spouse, the quotient obtained by dividing the Participant’s account balance by the number in the Joint and Last Survivor Table set forth in section 1.401(a)(9)-9 of the Treasury regulations,
using the Participant’s and spouse’s attained ages as of the Participant’s and spouse’s birthdays in the distribution calendar year. 

3.2. Lifetime Required Minimum Distributions Continue Through Year of Participant’s Death. Required minimum distributions will be determined under this
section 3 beginning with the first distribution calendar year and up to and including the distribution calendar year that includes the Participant’s date of death 

Section 4. Required Minimum Distributions After Participant’s Death. 

4.1. Death On or After Date Distributions Begin. 

(a) Participant Survived by Designated Beneficiary. If the Participant dies on or after the date distributions begin and there is a designated
Beneficiary, the minimum amount that will be distributed for each distribution calendar year after the year of the Participant’s death is the quotient obtained by dividing the Participant’s account balance by the longer of the remaining
life expectancy of the Participant or the remaining life expectancy of the Participant’s designated Beneficiary, determined as follows: 

(1) The Participant’s remaining life expectancy is calculated using the age of the Participant in the year of death, reduced by one for
each subsequent year. 
 (2) If the Participant’s surviving spouse is the Participant’s sole designated Beneficiary, the remaining
life expectancy of the surviving spouse is calculated for each distribution calendar year after the year of the Participant’s death using the surviving spouse’s age as of the spouse’s birthday in that year. For distribution calendar
years after the year of the surviving spouse’s death, the remaining life 

  

					
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expectancy of the surviving spouse is calculated using the age of the surviving spouse as of the spouse’s birthday in the calendar year of the spouse’s death, reduced by one for each
subsequent calendar year. 
 (3) If the Participant’s surviving spouse is not the Participant’s sole designated Beneficiary, the
designated Beneficiary’s remaining life expectancy is calculated using the age of the Beneficiary in the year following the year of the Participant’s death, reduced by one for each subsequent year. 

(b) No Designated Beneficiary. If the Participant dies on or after the date distributions begin and there is no designated Beneficiary as of
September 30 of the year after the year of the Participant’s death, the minimum amount that will be distributed for each distribution calendar year after the year of the Participant’s death is the quotient obtained by dividing the
Participant’s account balance by the Participant’s remaining life expectancy calculated using the age of the Participant in the year of death, reduced by one for each subsequent year. 

4.2. Death Before Date Distributions Begin. 
 (a)
Participant Survived by Designated Beneficiary. If the Participant dies before the date distributions begin and there is a designated Beneficiary, the minimum amount that will be distributed for each distribution calendar year after the year of the
Participant’s death is the quotient obtained by dividing the Participant’s account balance by the remaining life expectancy of the Participant’s designated Beneficiary, determined as provided in section 4.1. 

(b) No Designated Beneficiary. If the Participant dies before the date distributions begin and there is no designated Beneficiary as of
September 30 of the year following the year of the Participant’s death, distribution of the Participant’s entire interest will be completed by December 31 of the calendar year containing the fifth anniversary of the
Participant’s death. 
 (c) Death of Surviving Spouse Before Distributions to Surviving Spouse Are Required to Begin. If the
Participant dies before the date distributions begin, the Participant’s surviving spouse is the Participant’s sole designated Beneficiary, and the surviving spouse dies before distributions are required to begin to the surviving spouse
under section 2.2, this section 4.2 will apply as if the surviving spouse were the Participant. 
 Section 5. Definitions. 

5.1. Designated Beneficiary. The individual who is designated as the Beneficiary under Section 22 of the Plan and is the designated Beneficiary under
section 40l(a)(9) of the Internal Revenue Code and section 1.401(a)(9)-1, Q&A-4, of the Treasury regulations. 

  

					
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 5.2. Distribution calendar year. A calendar year for which a minimum distribution is required. For
distributions beginning before the Participant’s death, the first distribution calendar year is the calendar year immediately preceding the calendar year which contains the Participant’s required beginning date. For distributions beginning
after the Participant’s death, the first distribution calendar year is the calendar year in which distributions are required to begin under section 2.2. The required minimum distribution for the Participant’s first distribution calendar
year will be made on or before the Participant’s required beginning date. The required minimum distribution for other distribution calendar years, including the required minimum distribution for the distribution calendar year in which the
Participant’s required beginning date occurs, will be made on or before December 31 of that distribution calendar year. 
 5.3. Life expectancy.
Life expectancy as computed by use of the Single Life Table in section 1.401(a)(9)-9 of the Treasury regulations. 
 5.4. Participant’s account
balance. The account balance as of the last valuation date in the calendar year immediately preceding the distribution calendar year (valuation calendar year) increased by the amount of any contributions made and allocated or forfeitures allocated
to the account balance as of dates in the valuation calendar year after the valuation date and decreased by distributions made in the valuation calendar year after the valuation date. The account balance for the valuation calendar year includes any
amounts rolled over or transferred to the Plan either in the valuation calendar year or in the distribution calendar year if distributed or transferred in the valuation calendar year. 

5.5 Required beginning date. The date specified in section 13(b) of the Plan. 

  

					
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 SCHEDULE A 

MERGERS, TRANSFERS, AND RESTATEMENTS 

Alcoa Savings Plans Restructuring and Redesign 

Effective January 1, 2011, the savings plans sponsored by Alcoa Inc. were restructured and redesigned as follows: 

This Alcoa Savings Plan for Subsidiary and Affiliate Employees is restructured and renamed the Alcoa Retirement Savings Plan for Hourly
Non-Bargaining Employees (“Hourly Non-Bargaining Savings Plan”); 
 On that same date, the assets and liabilities with respect to
salaried employees in this Plan are spun off and transferred to the Alcoa Retirement Savings Plan for Salaried Employees, prior to January 1, 2011 named the Alcoa Savings Plan for Non-Bargaining Employees (“Salaried Savings Plan”);
and 
 Participants in the Plan employed by Alcoa Global Fasteners, Inc. are spun off from this Plan to the Alcoa Retirement Savings Plan for
Fastener Systems and Commercial Windows Employees (“FS and CW Plan”), a new plan sponsored by the Subsidiary, Alcoa Global Fasteners, Inc. 

Transfer of B&C Salaried Employees 
 Effective
as of the close of business on December 31, 2010, the B & C Research Defined Contribution Plan was merged into this Plan, and effective January 1, 2011, the accounts of salaried Participants were spun off and transferred to the Alcoa
Retirement Savings Plan for Salaried Employees (prior to January 1, 2011 known as the Alcoa Savings Plan for Non-Bargaining Employees). 

Transfer of TRACO Hourly Employees’ Accounts from the Alcoa Retirement Savings Plan for Fastener Systems and Commercial Windows Employees to This
Plan 
 Effective January 1, 2012, the amounts standing to the credit in the in the Alcoa Retirement Savings Plan for Fastener Systems and
Commercial Windows Employees (“FS-CW Savings Plan”) for Alcoa Commercial Windows LLC (“TRACO”) Hourly employees were transferred to this Plan, and the liability to pay the benefits of the transferred TRACO employees that were
accrued under the FS-CW Savings Plan became the liability of this Plan. 
 For purposes of transferring the TRACO Hourly Participants’ Accounts, each
participant’s account balance in the investment funds of the FS-CW Savings Plan are automatically transferred to the identical funds in this Plan. 

Merger of the Alcoa Retirement Savings Plan for Mill Products Employees. 

Effective as of close of business on December 31, 2012, the amounts standing to the credit in the salaried participants’ accounts from the Alcoa
Retirement Savings Plan for Mill Products Employees will be transferred to the Alcoa Retirement Savings Plan for Salaried Employees and immediately thereafter the Alcoa Retirement Savings Plan for Mill Products Employees


  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
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will be merged into this Plan and hourly participant’s accounts will be maintained in this Plan. Each such hourly participant’s account balance in the investment funds of the Mill
Products Plan are automatically transferred to the identical funds in this Plan. 
 2015 Restatment of Plan 

The Plan was amended and restated effective January 1, 2015, to incorporate all amendments adopted to such date and to reflect provisions required by
applicable law and regulatory guidance. 
 Transfer of Certain Firth Rixson Inc., Employee Savings Plan Participants 

Effective December 31, 2015, certain actively employed hourly Participants at the Midway, Georgia (Location Code: MDW) location of Firth Rixson Forging
LLC (Company Code: 809) covered under the Firth Rixson Inc., Employee Savings Plan (“Firth Plan”) were spun off and transferred from the Firth Plan to this Plan effective January 1, 2016. Upon the cessation of their participation
in the Firth Plan, the account balances in the Firth Plan for these Participants were transferred to accounts in this Plan, and each Participant’s account balance in this Plan was initially invested in the QDIA based on the Participant’s
age at the time of the transfer. Each Participant’s pre-tax deferral election on file with the Firth Plan will transfer to the Plan without further action on the part of the participant; provided, however, that any pre-tax deferral election on
file in excess of twenty-five percent (25%) will be limited and modified to equal twenty-five percent (25%) due to the existing maximum pre-tax deferral election in the Plan. New hires into this group also will participate in this Plan.


  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
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 SCHEDULE B 

ALCOA RETIREMENT SAVINGS PLAN FOR HOURLY NON-BARGAINING EMPLOYEES 

PARTICIPATING EMPLOYER CONTRIBUTIONS (MATCH) AND 

EMPLOYER RETIREMENT INCOME CONTRIBUTIONS (ERIC) 

EFFECTIVE ON OR AFTER JANUARY 1, 2015 
  

															
	 Company
Code
	  	 Company Description
	  	 *EE

Type
	  	 LOC
	  	 Location Description
	  	Match	 	  	 ERIC

	828	  	Alcoa Commercial Windows LLC	  	H	  	TRA	  	Traco, Alcoa Commercial Windows LLC	  	 	0.5000	  	  	Y
							
	010	  	Alcoa Inc.	  	H	  	CLC	  	Chillicothe, Ohio (ASL)	  	 	0.5000	  	  	N
							
	010	  	Alcoa Inc.	  	H	  	GCD	  	Goose Creek, SC (effective November 30, 2014)	  	 	1.0000	  	  	N
							
	010	  	Alcoa Inc.	  	H	  	LAF	  	Lafayette, Indiana	  	 	1.0000	  	  	N
							
	010	  	Alcoa Inc.	  	H	  	POD	  	Ponder, Texas (ASL)	  	 	0.5000	  	  	N
							
	010	  	Alcoa Inc.	  	H	  	STS	  	San Antonio, Texas	  	 	1.0000	  	  	Y
							
	010	  	Alcoa Inc.	  	H	  	WAR	  	Warrick (Newburgh, In)	  	 	0.5000	  	  	N
							
	010	  	Alcoa Inc.	  	H	  	WEN	  	Wenatchee, Washington	  	 	0.5000	  	  	N
							
	985	  	Alumax Mill Products, Inc.	  	H	  	LNX	  	Lancaster, Pennsylvania (Alumax)	  	 	1.000	  	  	N
							
	631	  	B&C Castings Inc.	  	H	  	BCC	  	Barberton, Ohio	  	 	0.5000	  	  	Y
							
	627	  	B & C Research, Inc.	  	H	  	BRT	  	Barberton, OH	  	 	0.5000	  	  	N
							
	809	  	Firth Rixson Forgings LLC	  	H	  	MDW	  	Midway, Georgia (effective January 1, 2016)	  	 	1.0000	  	  	Y‡
							
	721	  	Halethorpe Extrusions, Inc.	  	H	  	BAL	  	Baltimore, Maryland	  	 	1.0000	  	  	Y
							
	T23	  	Howmet Aluminum Casting, Inc.	  	E	  	DRH	  	Del Rio, Texas (Howmet)	  	 	1.0000	  	  	Y
							
	T48	  	Howmet Castings & Services Inc	  	E	  	DJY	  	Dover, New Jersey (Howmet-HDC)	  	 	1.0000	  	  	Y
							
	T48	  	Howmet Castings & Services Inc	  	H	  	DJY	  	Dover, New Jersey (Howmet-HDC)	  	 	1.0000	  	  	N
							
	T48	  	Howmet Castings & Services Inc	  	E	  	DNH	  	Dover, New Jersey (Howmet-HAD)	  	 	1.0000	  	  	Y
							
	T48	  	Howmet Castings & Services Inc	  	H	  	DNH	  	Dover, New Jersey (Howmet-HAD)	  	 	1.0000	  	  	N
							
	T48	  	Howmet Castings & Services Inc	  	E	  	HVH	  	Hampton, Virginia (Howmet)	  	 	1.0000	  	  	Y
							
	T48	  	Howmet Castings & Services Inc	  	H	  	HVH	  	Hampton, Virginia (Howmet)	  	 	1.0000	  	  	N
							
	T48	  	Howmet Castings & Services Inc	  	H	  	LIH	  	Laporte, Indiana (Howmet)	  	 	1.0000	  	  	N
							
	T48	  	Howmet Castings & Services Inc	  	E	  	LIH	  	Laporte, Indiana (Howmet)	  	 	1.0000	  	  	Y
							
	T48	  	Howmet Castings & Services Inc	  	H	  	MSH	  	Morristown, Tennessee (Howmet)	  	 	1.0000	  	  	N
							
	T48	  	Howmet Castings & Services Inc	  	E	  	WCH	  	Winstead, Connecticut (Howmet)	  	 	1.0000	  	  	Y
							
	T48	  	Howmet Castings & Services Inc	  	H	  	WTH	  	Wichita Falls, Texas (Howmet)	  	 	1.0000	  	  	N
							
	T48	  	Howmet Castings & Services Inc	  	E	  	WTH	  	Wichita Falls, Texas (Howmet)	  	 	1.0000	  	  	Y
							
	T13	  	Howmet Corporation	  	E	  	HVH	  	Hampton, Virginia (Howmet)	  	 	1.0000	  	  	Y


  

					
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 SCHEDULE B 

ALCOA RETIREMENT SAVINGS PLAN FOR HOURLY NON-BARGAINING EMPLOYEES 

PARTICIPATING EMPLOYER CONTRIBUTIONS (MATCH) AND 

EMPLOYER RETIREMENT INCOME CONTRIBUTIONS (ERIC) 

EFFECTIVE ON OR AFTER JANUARY 1, 2015 
  


															
	 Company
Code
	  	 Company Description
	  	 *EE

Type
	  	 LOC
	  	 Location Description
	  	Match	 	  	 ERIC

	T13	  	Howmet Corporation	  	H	  	HVH	  	Hampton, Virginia (Howmet)	  	 	1.0000	  	  	N
							
	T13	  	Howmet Corporation	  	E	  	LIH	  	Laporte, Indiana (Howmet)	  	 	1.0000	  	  	Y
							
	T13	  	Howmet Corporation	  	H	  	LIH	  	Laporte, Indiana (Howmet)	  	 	1.0000	  	  	N
							
	T13	  	Howmet Corporation	  	E	  	WMH	  	Whitehall, Michigan (Howmet)	  	 	1.0000	  	  	Y
							
	T15	  	Howmet TMP Corporation	  	H	  	CLH	  	Cleveland, Ohio (Howmet)	  	 	1.0000	  	  	 Y

(for new hires and rehires on or after 1-1-2010)

							
	T15	  	Howmet TMP Corporation	  	E	  	CLH	  	Cleveland, Ohio (Howmet)	  	 	1.0000	  	  	Y
							
	988	  	Kawneer Company, Inc.	  	H	  	AUX	  	Atlanta Service Center (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	BTX	  	Jessup, Maryland (BTX)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	CHX	  	Chicago, Ilinois (Alumax-FIX)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	CLX	  	Cleveland, Ohio (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	HUX	  	Houston, Texas (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	IVX	  	Irving (Dallas), Texas (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	KAX	  	Kansas City, Missouri (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	ORX	  	Orlando, Florida (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	SAX	  	Springdale, Arkansas (Kawneer)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	SKX	  	Salt Lake, Utah (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	SSX	  	Seattle, Washington (Alumax)	  	 	0.5000	  	  	N
							
	988	  	Kawneer Company, Inc.	  	H	  	VGX	  	Visalia, California (Kawneer)	  	 	0.5000	  	  	N
							
	R01	  	Reynolds Metals Company	  	H	  	EGY	  	Eastman, Georgia (RMC)	  	 	1.0000	  	  	Y
							
	T14	  	Turbine Componenets Corporation	  	H	  	BCH	  	Branford, Connecticut (Howmet)	  	 	1.0000	  	  	N
							
	T14	  	Turbine Componenets Corporation	  	E	  	BCH	  	Branford, Connecticut (Howmet)	  	 	1.0000	  	  	Y

  

	‡	Regardless of hire date 

 RESTRICTED DISCRETIONARY CONTRIBUTIONS 

There are no employee groups currently accruing Restricted Discretionary Contributions. 

  

					
	Alcoa Retirement Savings Plan for Hourly Non Bargaining Employees	 	
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