Leerink Swann LLC
One Federal Street, 37th Floor
Boston, MA 02110
January 31, 2013
VIA EDGAR
Securities and Exchange Commission
Division of Corporation Finance
100 F Street, N.E.
Washington, D.C. 20549
Attention: Jeffrey Riedler
| Re: | Withdrawal of Request for Acceleration of Effective Date |
KaloBios Pharmaceuticals, Inc.
Registration Statement on Form S-1 (File No. 333-184299)
Dear Mr. Riedler:
On January 30, 2013, we, as the Representative of the several underwriters, filed a letter with the Securities and Exchange Commission via EDGAR requesting, pursuant to Rule 461 under the Securities Act of 1933, as amended, the acceleration of the effective date of the above-referenced Registration Statement on Form S-1 (File No. 333-184299) so that it may be declared effective on January 30, 2013, at 4:00 p.m. Eastern Time, or as soon thereafter as practicable. We hereby withdraw such acceleration request.
[Signature Page Follows]
Very truly yours,
LEERINK SWANN LLC As Representative of the several Underwriters | ||
| By: | LEERINK SWANN LLC | |
| By | /s/ Bryan Giraudo | |
Name: Bryan Giraudo Title: Managing Director | ||
[Signature Page to Withdrawal of Acceleration Request]
