Exhibit 2.1 STOCK PURCHASE AGREEMENT STOCK PURCHASE AGREEMENT, dated February 23, 2004 (the "Agreement"), by and among PFLEIDERER AKTIENGESELLSCHAFT ("PAG"), PFLEIDERER CONSULTING GmbH ("CON"), HALDE NEUNUNDNEUNZIGSTE VERWALTUNGSGESELLSCHAFT mbH (to...Stock Purchase Agreement • April 21st, 2004 • Valmont Industries Inc • Fabricated structural metal products • Delaware
