Stock Trading History of Zein Youssef El

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Zein Youssef El since year 2005. The trader's CIK number is 1193366. At the time of this reporting, Zein Youssef El is the Director of Hybridon Inc . (stock ticker symbol HBY). See this page for all insider trading activities at Hybridon Inc .

Stock purchases, sales, and option exercises reported by insider *Zein Youssef El* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-09-05	IDRA	Hybridon Inc	Option Exercise	70,684	7.12	503,270
2008-05-29	IDRA	Hybridon Inc	Option Exercise	279,727	8.00	2,237,816
2008-03-28	IDRA	Hybridon Inc	Option Exercise	69,202	5.36	370,922
2008-03-14	IDRA	Hybridon Inc	Option Exercise	54,065	5.36	289,788
2007-04-27	IDP	Hybridon Inc	Option Exercise	250	4.00	1,000
2006-01-09	IDP	Hybridon Inc	Option Exercise	1,000	.50	500

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Zein Youssef El (Director of Hybridon Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.