Exhibit 4 ESCROW AGREEMENT THIS ESCROW AGREEMENT, dated as of January 28, 1999 (this "Agreement"), by and between XOMA LTD., a Bermuda company (the "Company"), [Buyer] (the "Buyer"), and BRIAN W. PUSCH, not in his individual capacity but as Escrow...Escrow Agreement • February 18th, 1999 • Xoma LTD • Pharmaceutical preparations • New York
Exhibit 3 REGISTRATION RIGHTS AGREEMENT THIS REGISTRATION RIGHTS AGREEMENT, dated as of January 28, 1999 (this "Agreement"), is made by and between XOMA LTD., a Bermuda company (the "Company"), and the person named on the signature page hereto (the...Registration Rights Agreement • February 18th, 1999 • Xoma LTD • Pharmaceutical preparations • New York
SUBSCRIPTION AGREEMENT COMMON STOCK and COMMON STOCK PURCHASE WARRANTS XOMA LTD.Subscription Agreement • February 18th, 1999 • Xoma LTD • Pharmaceutical preparations • New York
