FOSTER L B CO — M&A Activity 2010

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UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE TO

Tender Offer Statement under Section 14(d)(1) or 13(e)(1) of the Securities Exchange Act of 1934 (Amendment No. 12)

PORTEC RAIL PRODUCTS, INC.

(Name of Subject Company (issuer))

FOSTER THOMAS COMPANY

(offeror)

a wholly-owned subsidiary of

L.B. FOSTER COMPANY

(parent of offeror)

(Names of Filing Persons (identifying status as offeror, issuer or other person))

Common Stock, $1.00 par value per share (Title of Class of Securities)

736212101 (CUSIP Number of Class of Securities)

David Voltz L.B. Foster Company 415 Holiday Drive Pittsburgh, Pennsylvania 15220 (412)-928-3417 (Name, address, and telephone numbers of person authorized to receive notices and communications on behalf of filing persons)

with a copy to:

Lewis U. Davis, Jr., Esq. Buchanan Ingersoll & Rooney PC One Oxford Centre 301 Grant Street, 20th Floor Pittsburgh, PA 15219 (412) 562-8800

Calculation of Filing Fee

| * | Estimated for purposes of calculating the amount of the filing fee only, in accordance with Rule
0-11 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The calculation of
the transaction valuation assumes a purchase price of $11.71 per share and the purchase of
9,741,029 shares of Portec common stock, which
is represented by (i) 9,602,029 outstanding shares of common stock; and (ii) 139,000 shares of
common stock that were issuable with respect to all outstanding options, in each case as provided
by Portec, as of the most recent practicable date. |
| --- | --- |
| ** | The amount of the filing fee was calculated in accordance with Section 14(g)(3) of the Exchange
Act, and equals $71.30 per million dollars of the transaction valuation amount. |

þ Check the box if any part of the fee is offset as provided by Rule 0-11(a)(2) and identify the filing with which the offsetting fee was previously paid. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

o Check the box if the filing relates solely to preliminary communications made before the commencement of a tender offer.

Check the appropriate boxes below to designate any transactions to which the statement relates:

þ third-party tender offer subject to Rule 14d-1.

o issuer tender offer subject to Rule 13e-4.

o going-private transaction subject to Rule 13e-3.

o amendment to Schedule 13D under Rule 13d-2.

Check the following box if the filing is a final amendment reporting the results of the tender offer: o

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This Amendment No. 12 (“Amendment No. 12”) amends and supplements the Tender Offer Statement on Schedule TO originally filed with the Securities and Exchange Commission on February 26, 2010, as amended (the “Schedule TO”), by (i) Foster Thomas Company, a West Virginia corporation (the “Purchaser”) and a wholly-owned subsidiary of L.B. Foster Company, a Pennsylvania corporation (“Parent”), and (ii) Parent. The Schedule TO relates to the offer by the Purchaser to purchase all of the outstanding shares of common stock, par value $1.00 per share (the “Shares”), of Portec Rail Products, Inc., a West Virginia corporation (“Portec”), at a purchase price of $11.71 per Share, net to the seller in cash, without interest thereon and less any applicable withholding or stock transfer taxes, upon the terms and subject to the conditions set forth in the Offer to Purchase dated February 26, 2010 (which, together with any amendments and supplements thereto, collectively constitute the “Offer to Purchase”) and in the related Letter of Transmittal, copies of which are filed with the Schedule TO as Exhibits (a)(1)(A) and (a)(1)(B), respectively. Capitalized terms used and not otherwise defined in this Amendment No. 12 have the meanings assigned to such terms in the Schedule TO or the Offer to Purchase. This Amendment No. 12 is being filed on behalf of the Purchaser and Parent. Pursuant to General Instruction F to Schedule TO, the information contained in the Offer to Purchase, including all schedules and annexes thereto, is hereby expressly incorporated by reference in answers to Items 1 through 11 of the Schedule TO and is supplemented by the information specifically provided for herein.

link2 "Item 11. Additional Information"

Item 11. Additional Information .

Items 1 through 11 of the Schedule TO are amended and supplemented to include the following:

“In accordance with the terms of the Merger Agreement, on August 16, 2010, Purchaser extended the Offer until 12:00 midnight (one minute after 11:59 p.m.) New York City, New York time on Monday, August 30, 2010, unless further extended. The full text of the press release issued by L.B. Foster on August 16, 2010 announcing the Offer’s extension is filed as Exhibit (a)(5)(S) to the Schedule TO and is incorporated by reference into the Schedule TO.”

Accordingly, all reference to the Expiration Date in the Offer to Purchase are hereby amended to be references to “12:00 midnight, New York City, New York time on August 30, 2010.”

link2 "Item 12. Exhibits"

Item 12. Exhibits.

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link1 "SIGNATURE"

SIGNATURE

After due inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

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