UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): February 20, 2015

KaloBios Pharmaceuticals, Inc.

(Exact name of registrant as specified in its charter)

442 Littlefield Avenue

 South San Francisco, CA 94080

(Address of principal executive offices, including zip code)

(650) 243-3100

(Registrant’s telephone number, including area code)

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2):

o Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

o Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

o Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

o Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 3.01     Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing.

On February 20, 2015, KaloBios Pharmaceuticals, Inc. (the “Company”) received a deficiency letter from The NASDAQ Stock Market LLC (“NASDAQ”) indicating that, based on the Company’s closing bid price for the last 30 consecutive business days, the Company does not comply with the minimum bid price requirement of $1.00 per share, as set forth in NASDAQ Listing Rule 5550(a)(2). The notification has no immediate effect on the listing of the Company’s common stock on The NASDAQ Global Market.

In accordance with NASDAQ Listing Rule 5810(c)(3)(A), the Company has a grace period of 180 calendar days, or until August 19, 2015, to regain compliance with the minimum closing bid price requirement for continued listing. In order to regain compliance, the minimum closing bid price per share of the Company’s common stock must be at least $1.00 for a minimum of ten consecutive business days. In the event the Company does not regain compliance by August 19, 2015, the Company may be afforded an additional 180-day compliance period, provided it demonstrates that it meets all other applicable standards for initial listing on The Nasdaq Global Market (except the bid price requirement), and provides written notice of its intention to cure the minimum bid price deficiency during the second grace period, by effecting a reverse stock split, if necessary. If the Company fails to regain compliance after the second grace period, the Company’s stock will be subject to delisting by NASDAQ.

The Company is considering actions that it may take in response to this notification in order to regain compliance with the continued listing requirements.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated:  February 23, 2015

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