X0306 4 2018-05-23 0 0000352825 FOSTER L B CO FSTR 0001560207 Legion Partners Asset Management, LLC 9401 WILSHIRE BLVD., SUITE 705 BEVERLY HILLS CA 90212 0 0 1 0 0001595909 Legion Partners, L.P. I 9401 WILSHIRE BLVD. SUITE 705 BEVERLY HILLS CA 90212 0 0 0 1 Fund Managed by IA 0001618783 Legion Partners, L.P. II 9401 WILSHIRE BLVD. SUITE 705 BEVERLY HILLS CA 90212 0 0 0 1 Fund Managed by IA 0001661189 Legion Partners Special Opportunities, L.P. II 9401 WILSHIRE BLVD. SUITE 705 BEVERLY HILLS CA 90212 0 0 0 1 Fund Managed by IA Call Option 25 2018-05-23 4 S 0 97 1.4679 D 2018-05-23 2018-08-17 Common Stock 9700 425 I Legion Partners, L.P. I Call Option 25 2018-05-24 4 S 0 156 1.5129 D 2018-05-24 2018-08-17 Common Stock 15600 581 I Legion Partners, L.P. I Call Option 25 2018-05-23 4 S 0 9 1.4679 D 2018-05-23 2018-08-17 Common Stock 900 40 I Legion Partners, L.P. II Call Option 25 2018-05-24 4 S 0 15 1.5129 D 2018-05-24 2018-08-17 Common Stock 1500 55 I Legion Partners, L.P. II Call Option 25 2018-05-23 4 S 0 28 1.4679 D 2018-05-23 2018-08-17 Common Stock 2800 123 I Legion Partners Special Opportunities, L.P. II Call Option 25 2018-05-24 4 S 0 46 1.5129 D 2018-05-24 2018-08-17 Common Stock 4600 169 I Legion Partners Special Opportunities, L.P. II This Form 4 is filed jointly by Legion Partners, L.P. I ("Legion Partners I"), Legion Partners, L.P. II ("Legion Partners II"), Legion Partners Special Opportunities, L.P. II ("Legion Partners Special II"), Legion Partners, LLC ("General Partner"), Legion Partners Asset Management, LLC ("Legion Partners Asset Management"), Legion Partners Holdings, LLC ("Legion Partners Holdings"), Christopher S. Kiper and Raymond T. White (collectively, the "Reporting Persons"). Each Reporting Person may be deemed to be a member of a Section 13(d) group that owns more than 10% of the Issuer's outstanding shares of Common Stock. Each Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein, and this report shall not be deemed to be an admission that any Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. Legion Partners I sold short these call options which create the obligation to sell shares of common stock ("Common Stock") of LB Foster Company (the "Issuer") subject to the option. General Partner is the general partner of Legion Partners I, Legion Partners Asset Management is the investment advisor of Legion Partners I, Legion Partners Holdings is the sole member of Legion Partners Asset Management and managing member of General Partner, and each of Messrs. Kiper and White are managing directors of Legion Partners Asset Management and managing members of Legion Partners Holdings. As a result of these relationships, General Partner, Legion Partners Asset Management, Legion Partners Holdings and Messrs. Kiper and White may be deemed to have shared voting and dispositive power over the Common Stock owned by Legion Partners I. Legion Partners II sold short these call options which create the obligation to sell shares of common stock (Common Stock") of LB Foster Company (the "Issuer") subject to the option. General Partner is the general partner of Legion Partners II, Legion Partners Asset Management is the investment advisor of Legion Partners II, Legion Partners Holdings is the sole member of Legion Partners Asset Management and managing managing member of General Partner, and each of Messrs. Kiper and White are managing directors of Legion Partners Asset Management and managing members of Legion Partners Holdings. As a result of these relationships, General Partner, Legion Partners Asset Management, Legion Partners Holdings and Messrs. Kiper and White may be deemed to have shared voting and dispositive power over the Common Stock owned by Legion Partners II. Legion Partners Special II sold short these call options which create the obligation to sell shares of common stock ("Common Stock") of LB Foster Company (the "Issuer") subject to the option. General Partner is the general partner of Legion Partners Special II, Legion Partners Asset Management is the investment advisor of Legion Partners Special II, Legion Partners Holdings is the sole member of Legion Partners Asset Management and managing member of General Partner, and each of Messrs. Kiper and White are managing directors of Legion Partners Asset Management and managing members of Legion Partners Holdings. As a result of these relationships, General Partner, Legion Partners Asset Management, Legion Partners Holdings and Messrs. Kiper and White may be deemed to have shared voting and dispositive power over the Common Stock owned by Legion Partners Special II. Represents an Obligation to sell the equity securities subject to the option. Legion Partners Asset Management, LLC 2018-05-25 Legion Partners, L.P. I 2018-05-25 Legion Partners, L.P. II 2018-05-25 Legion Partners Special Opportunities, L.P. II 2018-05-25