Stock Trading History of Lieber Jonathan I

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 Lieber Jonathan I since year 2005. The trader's CIK number is 1350090. At the time of this reporting, Lieber Jonathan I is the VP, CFO and Treasurer of Altus Pharmaceuticals Inc. (stock ticker symbol ALTU).

Stock purchases, sales, and option exercises reported by *Lieber Jonathan I* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-12-17	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	1,800	3.92	7,056
2007-12-17	ALTU	Altus Pharmaceuticals Inc.	Sale	1,800	10.03	18,054
2007-11-15	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	1,800	3.92	7,056
2007-11-15	ALTU	Altus Pharmaceuticals Inc.	Sale	1,800	11.35	20,430
2007-10-15	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	1,800	3.92	7,056
2007-10-15	ALTU	Altus Pharmaceuticals Inc.	Sale	1,800	11.46	20,628
2007-09-17	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	1,800	3.92	7,056
2007-09-17	ALTU	Altus Pharmaceuticals Inc.	Sale	1,800	10.27	18,486
2007-08-15	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	9,000	3.92	35,280
2007-08-15	ALTU	Altus Pharmaceuticals Inc.	Sale	9,000	10.42	93,780
2007-03-15	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	1,800	3.92	7,056
2007-03-15	ALTU	Altus Pharmaceuticals Inc.	Sale	1,800	14.23	25,614
2007-01-16	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	2,000	3.92	7,840
2007-01-16	ALTU	Altus Pharmaceuticals Inc.	Sale	2,000	19.24	38,480
2006-11-15	ALTU	Altus Pharmaceuticals Inc.	Option Exercise	2,000	3.92	7,840
2006-11-15	ALTU	Altus Pharmaceuticals Inc.	Sale	2,000	18.61	37,220

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 Lieber Jonathan I (VP, CFO and Treasurer of Altus Pharmaceuticals Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.