X0306 4 2012-08-21 0 0000944739 TRANSWITCH CORP /DE TXCC 0001026377 CHEN HERBERT C/O LATTANZIO CHEN MANAGEMENT LLC 650 MADISON AVENUE, 17TH FLOOR NEW YORK NY 10022 1 0 0 0 Common Stock $0.001 par value 1078640 D Common Stock $0.001 par value 2012-08-21 4 S 0 10000 0.92 D 1474904 I See Footnote Common Stock $0.001 par value 2012-08-22 4 S 0 5435 0.85 D 1469469 I See Footnote These securities are held in the accounts of Mr. Chen's (i) wife, (ii) minor daughter or (iii) unregistered investment companies over which Mr. Chen has investment control. (+) The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein. /s/ Herbert Chen (+) 2012-08-23