Exhibit 99.1
Information Relating to Part II, Item 14 — Other Expenses of Issuance and Distribution
The expenses in connection with the offering of $494.5 million aggregate principal amount of 3.00% Convertible Senior Notes due 2018 by Human Genome Science, Inc., registered pursuant to a Registration Statement on Form S-3 (Registration No. 333-162731) filed on October 29, 2009, are set forth in the following table. All amounts are estimated except the Securities and Exchange Commission registration fee.
Securities and Exchange Commission Registration Fee | $ | 56,670 | ||
Accounting Fees and Expenses | 174,000 | |||
Legal Fees and Expenses | 250,000 | |||
Printing Expenses | 25,000 | |||
Fees and Expenses of Trustee | 6,000 | |||
Miscellaneous Expenses | 10,000 | |||
Total | $ | 521,670 | ||