| Date | Event |
| 4-Dec-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Regulation FD Disclosure |
| 9-Nov-09 | HORSEHEAD HOLDING CORP Files SEC form 10-Q, Quarterly Report |
| 5-Nov-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Results of Operations and Financial Condition |
| 16-Sep-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Other Events, Financial Statements and Exhibits |
| 16-Sep-09 | Price hit new 52-week high ($12.90) |
| 11-Sep-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Entry into a Material Definitive Agreement, Financial Statements and Exhib |
| 8-Sep-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Other Events |
| 10-Aug-09 | HORSEHEAD HOLDING CORP Files SEC form 10-Q, Quarterly Report |
| 7-Aug-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Results of Operations and Financial Condition |
| 4-Aug-09 | Price hit new 52-week high ($11.55) |
| 3-Aug-09 | Price hit new 52-week high ($11.50) |
| 6-Jul-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 10-Jun-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Entry into a Material Definitive Agreement |
| 11-May-09 | HORSEHEAD HOLDING CORP Files SEC form 10-Q, Quarterly Report |
| 8-May-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Results of Operations and Financial Condition |
| 16-Mar-09 | HORSEHEAD HOLDING CORP Files SEC form 10-K, Annual Report |
| 2-Mar-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Results of Operations and Financial Condition |
| 27-Feb-09 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Regulation FD Disclosure |
| 14-Nov-08 | HORSEHEAD HOLDING CORP Files SEC form 10-Q, Quarterly Report |
| 7-Nov-08 | HORSEHEAD HOLDING CORP Files SEC form 8-K, Results of Operations and Financial Condition |