UNDERWRITING AGREEMENT 2,941,176 Shares CATALYST BIOSCIENCES, INC. Common Stock ($0.001 Par Value) EQUITY UNDERWRITING AGREEMENTUnderwriting Agreement • February 15th, 2018 • Catalyst Biosciences, Inc. • Pharmaceutical preparations • New York
Catalyst Biosciences, Inc., a Delaware corporation (the “Company”), proposes, subject to the terms and conditions stated herein, to sell to the several underwriters (the “Underwriters”) named on Schedule I hereto for whom you are acting as representative (the “Representative”) an aggregate 2,941,176 shares (the “Firm Shares”) of the Company’s common stock, $0.001 par value (the “Common Stock”). The respective amounts of the Firm Shares to be so purchased by the several Underwriters are set forth opposite their names on Schedule I hereto. The Company also proposes to sell at the Underwriters’ option an aggregate of up to 441,176 additional shares of the Company’s Common Stock (the “Option Shares”) as set forth below.
