| Date | Name | Symbol | Type | Security | Shares | Price | Value | Ownership | Reported |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (Right to Buy) | 14.9k | $2.69 | $40.2k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (Right to Buy) | 312.2k | $2.69 | $839.7k | | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Exercise (in-the-money or at-the-money) | Common Stock Warrant (Right to Buy) | 6.8k | $2.34 | $16k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Exercise (in-the-money or at-the-money) | Common Stock Warrant (Right to Buy) | 5.7k | $2.34 | $13.3k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Exercise (in-the-money or at-the-money) | Common Stock Warrant (Right to Buy) | 142.5k | $2.34 | $333.4k | | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Exercise (in-the-money or at-the-money) | Common Stock Warrant (Right to Buy) | 118.8k | $2.34 | $277.9k | | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (Right to Buy) | 6.8k | $2.34 | $16k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (Right to Buy) | 5.7k | $2.34 | $13.3k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (Right to Buy) | 142.5k | $2.34 | $333.4k | | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (Right to Buy) | 118.8k | $2.34 | $277.9k | | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Other | Common Stock Warrant (Right to Buy) | 6.8k | $6.74 | $46k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Other | Common Stock Warrant (Right to Buy) | 5.7k | $8.69 | $49.4k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Other | Common Stock Warrant (Right to Buy) | 142.5k | $6.74 | $960.4k | | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Other | Common Stock Warrant (Right to Buy) | 118.8k | $8.69 | $1M | | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common | 45.2k | $2.34 | $105.9k | By InterWest Investors VII, L.P. | 04/16/2008 |
| 04/16/2008 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common | 945.6k | $2.34 | $2.2M | | 04/16/2008 |
| 09/30/2005 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (right to buy) | 6.8k | $6.74 | $46k | By: InterWest Investors VII, LP | 09/30/2005 |
| 09/30/2005 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock Warrant (right to buy) | 142.5k | $6.74 | $960.4k | | 09/30/2005 |
| 09/30/2005 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock | 19.5k | $5.86 | $114.3k | By: InterWest Investors VII, LP | 09/30/2005 |
| 09/30/2005 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock | 407.1k | $5.86 | $2.4M | | 09/30/2005 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series D Convertible Preferred Stock | 539.8k | $0.00 | $0 | | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series C Convertible Preferred Stock | 37.5k | $0.00 | $0 | See footnote | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series C Convertible Preferred Stock | 782.4k | $0.00 | $0 | | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series D Convertible Preferred Stock | 25.8k | $0.00 | $0 | See footnote | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series E Convertible Preferred Stock | 657k | $0.00 | $0 | | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series E Preferred Convertible Stock | 31.5k | $0.00 | $0 | See footnote | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Common Stock | 2M | $0.00 | $0 | | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Common Stock | 94.8k | $0.00 | $0 | See footnote | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock | 124.1k | $7.00 | $868.4k | | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Purchase | Common Stock | 5.9k | $7.00 | $41.6k | See footnote | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series C Convertible Preferred Stock | 782.4k | $0.00 | $0 | | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series C Convertible Preferred Stock | 37.5k | $0.00 | $0 | See footnote | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series D Convertible Preferred Stock | 539.8k | $0.00 | $0 | | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series D Convertible Preferred Stock | 25.8k | $0.00 | $0 | See footnote | 06/21/2004 |
| 06/21/2004 | METABASIS THERAPEUTICS INC | MBRX | Conversion | Series E Convertible Preferred Stock | 657k | $0.00 | $0 | | 06/21/2004 |
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