X0305 4 2012-04-02 0 0000065201 MET PRO CORP MPR 0001457461 D'Alterio Gennaro A. C/O MET-PRO CORPORATION PO BOX 144 HARLEYSVILLE PA 19438 0 1 0 0 Vice President Common Stock, Par value $ .10 236 D Common Stock, Par value $ .10 2706 I Held in 401(K) Plan Statutory Stock Purchase Option 11.75 2017-12-10 Common Stock 7800 7800 D Statutory Stock Purchase Option 11.345 2018-12-03 Common Stock 10000 17800 D Statutory Stock Purchase Option 9.69 2019-12-11 Common Stock 10000 27800 D Statutory Stock Purchase Option 12.18 2020-12-17 Common Stock 7955 35755 D Non-Statutory Stock Purchase Option 12.18 2011-12-17 2020-12-17 Common Stock 298 36053 D Statutory Stock Purchase Option 9.85 2022-02-27 Common Stock 6564 42637 D Statutory Stock Purchase Option 10.41 2012-04-02 4 A 0 4107 0 A 2022-04-02 Common Stock 4107 46744 D Exercisable 12/10/2008 as to 2,600 shares, 12/10/2009 as to 2,600 shares and 12/10/2010 as to 2,600 shares. Exercisable 12/3/2009 as to 3,333 shares, 12/3/2010 as to 3,333 shares and 12/3/2011 as to 3,334 shares. Exercisable 12/11/2010 as to 3,333 shares, 12/11/2011 as to 3,333 shares and 12/11/2012 as to 3,334 shares. Exercisable 12/17/2011 as to 2,453 shares, 12/17/2012 as to 2,751 shares and 12/17/2013 as to 2,751 shares. Exercisable 02/27/2013 as to 2,188 shares, 02/27/2014 as to 2,188 shares and 02/27/2015 as to 2,188 shares. Exercisable 04/02/2013 as to 1,369 shares, 04/02/2014 as to 1,369 shares and 04/02/2015 as to 1,369 shares. Raymond J. De Hont Attorney-in-fact of Gennaro A. D'Alterio 2012-04-04