Farmers National Banc Corp. Non-Transferable Subscription Rights Certificate for 2010 Rights Offering

FARMERS NATIONAL BANC CORP. NON-TRANSFERABLE SUBSCRIPTION RIGHTS CERTIFICATE

Investor ID Number

THE TERMS AND CONDITIONS OF THE RIGHTS OFFERING ARE SET FORTH IN FARMERS NATIONAL BANC CORP.’S PROSPECTUS DATED DECEMBER [●], 2010 (THE “PROSPECTUS”) AND ARE INCORPORATED HEREIN BY REFERENCE. COPIES OF THE PROSPECTUS ARE AVAILABLE UPON REQUEST FROM BNY MELLON SHAREOWNER SERVICES (BY CALLING, IF YOU ARE LOCATED WITHIN THE U.S., CANADA OR PUERTO RICO ###-###-#### (TOLL FREE) OR IF YOU ARE LOCATED OUTSIDE THE U.S. 1 ###-###-#### (COLLECT).

Farmers National Banc Corp. (the “Company”) has distributed, at no charge, to each holder of record of the Company’s common shares, no par value (“Common Shares”), (each a “Recordholder”), as of 5:00 p.m., Eastern Time, on October 25, 2010 (the “Record Date”) one subscription right (“Subscription Right”) for each Common Share held as of the close of business on the Record Date. Each Subscription Right entitles a Recordholder to a basic subscription right (the “Basic Subscription Right”) and an oversubscription privilege (the “Oversubscription Privilege”). The Basic Subscription Right of each Subscription Right gives each Recordholder the opportunity to purchase [●] Common Shares at a subscription price of $ [●] per Common Share (the “Subscription Price”). Fractional Common Shares resulting from the exercise of the Basic Subscription Right will be eliminated by rounding down to the nearest whole Common Share. In the event that a Recordholder purchases all of the Common Shares available pursuant to the Basic Subscription Right, the Recordholder may also choose to exercise the Oversubscription Privilege, subject to certain limitations and subject to allotment, to purchase a portion of any Common Shares that are not purchased by other Recordholders through the exercise of their Basic Subscription Rights.

Instructions continued on the reverse side *

Please complete the back if you would like to transfer ownership or request special mailing.

     SUBSTITUTE FORM W-9 – Department of the Treasury,      Internal Revenue Service       Payer’s Request for Taxpayer Identification Number (TIN)

‘      Special Transfer Instructions and Signature Guarantee Medallion If you want your Common Shares and any refund check to be issued in another name, fill in this section with the information for the new account name.

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FILL IN the space below.

Part 1 – PLEASE PROVIDE YOUR TAXPAYER IDENTIFICATION NUMBER (“TIN”) IN THE BOX AT THE RIGHT AND CERTIFY BY SIGNING AND DATING BELOW

Under penalties of perjury. I certify that:

EXEMPT PAYEE   o

Name (Please Print First, Middle & Last Name)

(Title of Officer Signing this Guarantee)

1.    The number shown on this form is my correct taxpayer identification number (or I am waiting for a number to be issued to me), and

Address        (Number and Street)

(Name of Guarantor - Please Print)

Please check appropriate box:

Individual/Sole proprietor  o

(City, State & Zip Code)

(Address of Guarantor Firm)

2.    I am not subject to backup withholding because: (a) I am exempt from backup withholding, or (b) I have not been notified by the Internal Revenue Service (IRS) that I am subject to backup withholding as a result of a failure to report all interest or dividends, or (c) the IRS has notified me that I am no longer subject to backup withholding, and

Corporation  o           Partnership  o

Limited liability company  o

(Tax Identification Number)

Enter the tax classification   D=disregarded entity o

’  Special Mailing Instructions Fill in ONLY if mailing to someone other than the undersigned or to the undersigned at an address other than that shown on the front of this card. Mail certificate(s) and check(s) to:

C=corporation  o      P=partnership  o

o  Other 4

3.    I am a U.S. citizen or other U.S. person (including a U.S. resident alien).

Name (Please Print First, Middle & Last Name)

Address            (Number and Street)

Signature

Date

(City, State & Zip Code)

COMPLETE ALL APPLICABLE SECTIONS OF THIS FORM USING THE INSTRUCTIONS BELOW.

Œ		Sign and date Box 1 and include your day time phone number.
		Place an ý in the box and fill in the number of Common Shares you wish to subscribe for under your Basic Subscription Right.
Ž		Place an ý in the box and fill in the number of Common Shares you wish to oversubscribe for under your Oversubscription Privilege. (No limit, except your Basic Subscription Right must be fully exercised).
		Rights card and calculation section for determining your basic/oversubscription privileges.
		PLEASE SIGN IN BOX 5 TO CERTIFY YOUR TAXPAYER ID OR SOCIAL SECURITY NUMBER if you are a U.S. Taxpayer. If the Taxpayer ID or Social Security Number is incorrect or blank, write the corrected number in Box 5 and sign to certify. Please note that BNY Mellon Shareowner Services may withhold 28% of your proceeds as required by the IRS if the Taxpayer ID or Social Security Number is not certified on our records. To avoid backup withholding, you are required to fully and accurately complete the Substitute Form W-9. For additional instructions, please see the “Important Tax Information” document. Note: You are required to check the appropriate box for your status (Individual/Sole proprietor, Corporation, etc.) to avoid withholding. If you are a non - U.S. Taxpayer, please complete and return form W-8BEN.
‘		If you want your Common Shares and any refund check to be issued in another name, complete the Special Transfer Instructions in Box 6. Signature(s) in Box 6 must be medallion guaranteed.
’		Fill in Box 7 if, mailing to someone other than the undersigned or to the undersigned at an address other than that shown on the front of this card.

THIS RIGHTS OFFERING EXPIRES AT 5:00 P.M., EASTERN TIME, ON [•], 2011, AND THIS SUBSCRIPTION RIGHTS CERTIFICATE IS VOID THEREAFTER.