Wiring board, electronic component storage package, and electronic device

A wiring board comprising:

• a base comprising a first face, a second face opposite to the first face, and a side face between the first face and the second face;
• a signal electrode on the first face;
• a first recess and a second recess located in the side face and extending to the first face;
• a first ground conductor on an inner surface of the first recess;
• and
• a second ground conductor on an inner surface of the second recess, wherein
• when viewed in a first direction perpendicular to the first face, an outline of the base comprises at least one circular arc,
• when viewed in the first direction, the signal electrode extends from a center region on the first face toward the circular arc and is shifted from a normal line passing through a center point of the circular arc,
• when viewed in the first direction, the first recess and the second recess overlap the circular arc, and the first recess is on one side of the signal electrode, and the second recess is on an other side of the signal electrode,
• when viewed in the first direction, the first recess is closer to the normal line than the signal electrode, and
• in a direction parallel to the normal line, a dimension of the first recess is larger than a dimension of the second recess.