Offer valid only from 5/5/26 through 5/7/26 at participating US Smashburger® retail locations.  Offer available for purchases made in-store or online through smashburger.com or Smashburger® app during regular business hours. Store hours may vary. Offer to receive one (1) complimentary burger or Big Dog (not including applicable taxes) when you purchase any burger or Big Dog. Offer only available for items of equal or lesser value. For in-store orders, must mention offer at checkout to redeem offer. To redeem offer online, must enter promo code SBBOGO5 at checkout.  Limit of one (1) offer may be redeemed per transaction. Offer not available for items with crispy chicken. Offer available for all types of burgers and big dogs on the menu. No protein substitutions available. Not applicable to any applicable sales tax. Cannot be used in conjunction with any other offer, promotion, or discount. Not valid on previous purchases. Not valid on catering orders or orders with third party delivery. No cash value (unless prohibited by law, then cash value is $.005). No substitutions. No rainchecks. Company reserves the right to withdraw or change the offer’s terms and conditions at any time, at Smashburger’s discretion, and without notice. While supplies last. © 2026 Smashburger IP Holder LLC. All rights reserved.