QUAKER CAPITAL MANAGEMENT CORP [Rocket]

Date	Name	Symbol	Type	Security	Shares	Price	Value	Ownership	Reported
02/17/2009	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Sale	Common Stock, $.01 par value	100k	$3.15	$315k	Through two partnerships	02/17/2009
05/06/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	273.7k	$4.65	$1.3M	Through two partnerships	05/06/2008
04/29/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	9k	$4.61	$41.5k	Through two partnerships	04/25/2008
04/28/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	1.2k	$4.58	$5.4k	Through two partnerships	04/25/2008
04/25/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	52.6k	$4.53	$238.3k	Through two partnerships	04/25/2008
02/28/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $01 par value	26.3k	$4.81	$126.6k	Through two partnerships	02/27/2008
02/27/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $01 par value	42k	$4.70	$197.6k	Through two partnerships	02/27/2008
02/20/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	5.2k	$4.85	$25.2k	Through two partnerships	02/15/2008
02/19/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	16.5k	$4.85	$79.9k	Through two partnerships	02/15/2008
02/15/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	7k	$4.84	$33.9k	Through two partnerships	02/15/2008
01/29/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	3.6k	$4.82	$17.4k	Through two partnerships	01/24/2008
01/28/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	66.7k	$4.84	$322.8k	Through two partnerships	01/24/2008
01/25/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	4.7k	$4.89	$23k	Through two partnerships	01/24/2008
01/24/2008	PERFORMANCE TECHNOLOGIES INC \DE\	PTIX	Purchase	Common Stock, $.01 par value	4.9k	$4.78	$23.4k	Through two partnerships	01/24/2008
05/16/2006	FiberTower CORP	FTWR	Exercise (in-the-money or at-the-money)	Warrants	208.3k	$1.84	$383.3k		05/16/2006
05/16/2006	FiberTower CORP	FTWR	Exercise (in-the-money or at-the-money)	Common Stock	208.3k	$1.84	$383.3k	See footnote 1	05/16/2006
03/01/2006	FiberTower CORP	FTWR	Exercise (in-the-money or at-the-money)	Common Stock	999.6k	$0.01	$10k	Through Quaker Capital Partners I, L.P. and Quaker Capital Partners II, L.P.	03/01/2006
11/14/2005	FiberTower CORP	FTWR	Sale	Common Stock	250k	$5.50	$1.4M	Through Quaker Capital Partners I, L.P. and Quaker Capital PartnersII, L.P.	11/14/2005
07/14/2004	FiberTower CORP	FTWR	Sale	Common Stock	190k	$6.28	$1.2M	Through Quaker Capital Partners I, L.P. and Quaker Capital Partners II, L.P.	07/12/2004
07/13/2004	FiberTower CORP	FTWR	Sale	Common Stock	20k	$4.74	$94.8k	Through separately managed accounts	07/12/2004
07/12/2004	FiberTower CORP	FTWR	Sale	Common Stock	1.9k	$4.50	$8.5k	Through a separately managed account	07/12/2004
01/28/2004	FiberTower CORP	FTWR	Purchase	Warrants	208.3k	$1.83	$381.3k	Through Quaker Capital Partners II, L.P.	01/28/2004
01/28/2004	FiberTower CORP	FTWR	Purchase	Common stock	208.3k	$3.60	$750k	Through Quaker Capital Partners I, L.P. and Quaker Capital Partners, II, L.P.	01/28/2004
12/30/2003	FiberTower CORP	FTWR	Other (acquisition)	Common stock	175.8k	$0.00	$0	Through Quaker Capital Partners I, L.P.	12/30/2003