X0202 4 2005-11-28 0 0001133260 UNION DRILLING INC UDRL 0001208810 HOFFEN HOWARD I 1177 AVENUE OF THE AMERICAS, 40TH FLOOR NEW YORK NY 10036 1 0 1 0 Common Stock, Par value $0.01 per share 2005-11-28 4 S 0 3884011 13.055 D 9278925 I By Union Drilling Company LLC The Reporting Person is one of five members of the Board of Representatives of Union Drilling Company LLC, a Delaware limited liability company ("UDC LLC"). A majority of the ownership interests in UDC LLC are owned by Morgan Stanley Capital Partners III, L.P. and related private equity funds (collectively, the "Funds"), which are managed by Metalmark Capital LLC ("Metalmark"). The Reporting Person is also a principal of Metalmark. The Reporting Person disclaims beneficial ownership of the shares of common stock sold and/or owned by UDC LLC, a majority of the ownership interests of which are owned by the Funds, except to the extent of his indirect pecuniary interest therein. /s/ Howard I. Hoffen 2005-11-28