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): March 9, 2015

ALEXZA PHARMACEUTICALS, INC.

(Exact name of registrant as specified in its charter)

Delaware	000-51820	77-0567768
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

Alexza Pharmaceuticals, Inc. 2091 Stierlin Court Mountain View, California	94043
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: (650) 944-7000

(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. below):

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

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

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

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

Section 2 — Financial Information

Item 2.02. Results of Operations and Financial Condition.

On March 9, 2015, Alexza Pharmaceuticals, Inc., a Delaware corporation, issued a press release reporting financial results for the quarter and year ended December 31, 2014. The press release is attached hereto as Exhibit 99.1, which is furnished under Item 2.02 of this report and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933 or the Exchange Act, regardless of any general incorporation language in such filing.

Section 9 — Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number	Description
99.1	Press Release titled “Alexza Reports Fourth Quarter and Year End 2014 Financial Results,” dated March 9, 2015.

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.

	ALEXZA PHARMACEUTICALS, INC.
Date: March 9, 2015
	By:	/s/ Thomas B. King
		Thomas B. King President and Chief Executive Officer

INDEX TO EXHIBITS

Exhibit Number	Description
99.1	Press Release titled “Alexza Reports Fourth Quarter and Year End 2014 Financial Results,” dated March 9, 2015.