Horsehead Holding Corp

FY: Dec 31 2015

Q: Mar 31 2016

Q: Jun 30 2016

Q: Jun 30 2016

Q: Mar 31 2016

FY: Mar 1 2016

Q: Sep 30 2015

Q: Jun 30 2015

Q: Mar 31 2015

FY: Dec 31 2014

Q: Sep 30 2014

Q: Jun 30 2014

Q: Mar 31 2014

FY: Dec 31 2013

Q: Sep 30 2013

Q: Jun 30 2013

Q: Mar 31 2013

FY: Dec 31 2012

Q: Sep 30 2012

Q: Jun 30 2012

7.01,9.01

1.01,9.01

1.03,7.01,9.01

7.01,9.01

5.02,9.01

1.01,5.02,7.01,9.01

7.01,9.01

1.01,9.01

Regulation FD Disclosure

Entry into a Material Definitive Agreement

Entry into a Material Definitive Agreement

Regulation FD Disclosure

Regulation FD Disclosure

Entry into a Material Definitive Agreement

Regulation FD Disclosure

Regulation FD Disclosure

7.01,9.01

4.01

7.01,9.01

7.01,9.01

Certification of termination of registration of a class of securities (Section 12(b))

Notice of Effectiveness

Notice of Effectiveness

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Notification of removal from listing and/or registration on a national securities exchange

Prospectus Supplement for Primary Offering

Prospectus Supplement for Delayed or Continuous Offering

Prospectus Supplement for Primary Offering

06b

06b

Prospectus Supplement for Primary Offering

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Registration statement under Securities Act of 1933

06

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Prospectus Supplement for Primary Offering

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

DIMENSIONAL FUND ADVISORS LP

Greywolf Capital Management LP

Boates Timothy D

RS INVESTMENT MANAGEMENT CO LLC

none

none

none

none

none

Dalal Street, LLC

SCHERICH ROBERT D

Whitaker Gary R

Hensler James M

SHILLING JACK W

SCHREIBER GEORGE A JR

VAN RODEN JOHN C JR

John T Grant

SCHERICH ROBERT D

SCHERICH ROBERT D

Hensler James M

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

No description available

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

FILED AS OF DATE: 20070430