TENDER OFFER STATEMENT UNDER SECTION 14(d)(1)
OR SECTION 13(e)(1)OF THE SECURITIES EXCHANGE ACT OF 1934

Steven Della Rocca
Mountain Acquisition Corp.
c/o Vestar Capital Partners V, L.P.
245 Park Avenue, 41st Floor
New York, New York 10167
(212) 351-1600
(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications on Behalf of Filing Persons)

With a copy to:
Michael Movsovich
Kirkland & Ellis LLP
601 Lexington Avenue
New York, New York 10022
(212) 446-4800

*: Calculated solely for purposes of determining the filing fee. The calculation assumes the purchase of 30,534,195 shares of common stock, par value $0.001 per share, at $8.20 per share. The transaction value also includes the aggregate offer price for 3,688,167 shares issuable pursuant to outstanding options with an exercise price less than $8.20 per share, which is calculated by multiplying the number of shares underlying such outstanding options at each exercise price therefor by an amount equal to $8.20 minus such exercise price. The transaction value also includes the aggregate net offer price for 125,000 shares issuable pursuant to a warrant and 1,700,000 shares issuable pursuant to a confidentiality and non-competition agreement with Mr. Kerry R. Hicks, the Chief Executive Officer of Health Grades.
**: Calculated in accordance with Exchange Act Rule 0-11 by multiplying the transaction value by 0.0000713.

If applicable, check the appropriate box(es) below to designate the appropriate rule provision(s) relied upon:

This Amendment No. 5 to the Tender Offer Statement on Schedule TO (the "Schedule TO") amends and supplements the Schedule TO relating to the tender offer by Mountain Merger Sub Corp., a Delaware corporation ("Purchaser") and a direct wholly-owned subsidiary of Mountain Acquisition Corp., a Delaware corporation ("Parent"), for all of the outstanding common stock, par value $0.001 per share (the "Shares"), of Health Grades, Inc., a Delaware corporation ("Health Grades"), at a price of $8.20 per share net to the seller in cash without interest and less any required withholding taxes, if any, upon the terms and conditions set forth in the offer to purchase dated August 10, 2010 (the "Offer to Purchase"), a copy of which is attached as Exhibit (a)(1)(A), and in the related letter of transmittal (the "Letter of Transmittal"), a copy of which is attached as Exhibit (a)(1)(B), which, together with any amendments or supplements, collectively constitute the "Offer."

Items 1 through 9 and Item 11 of the Schedule TO, which incorporate by reference the information contained in the Offer to Purchase, are hereby revised as follows:

(1) In the response to the question 'Do you have the financial resources to pay for all of the Shares that you are offering to purchase in the Offer?' on page 2 of the Summary Term Sheet in the Offer to Purchase and in Section 9—"Source and Amount of Funds" on page 23 of the Offer to Purchase, the following sentence is amended and restated to add the underlined text:

The funds necessary to purchase the Shares pursuant to the Offer and to pay related fees and expenses will be funded through (x) the issuance of equity and/or debt securities of Parent or Holdings and (y) subsequent to the Merger, any available cash on Health Grades' balance sheet.

(2) Section 9—"Source and Amount of Funds" on page 23 of the Offer to Purchase is amended to include the following at the end of the second paragraph:

All funds to be provided by Vestar Capital Partners V, L.P. and its affiliates are currently available from the committed equity capital of investors Vestar Capital Partners V, L.P. and its affiliates. A copy of the equity commitment letter has been filed as Exhibit (b)(1) to the Schedule TO, which is incorporated herein by reference.

After due inquiry and to the best of their knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct.


Dated: August 30, 2010
	MOUNTAIN MERGER SUB CORP.
	By:	/s/ STEVEN DELLA ROCCA
	Name:	Steven Della Rocca
	Title:	Secretary
	MOUNTAIN ACQUISITION CORP.
	By:	/s/ STEVEN DELLA ROCCA
	Name:	Steven Della Rocca
	Title:	Secretary
	VESTAR CAPITAL PARTNERS V, L.P.
	By: Vestar Associates V, L.P.,
	its General Partner
	By: Vestar Managers V Ltd., its General Partner
	By:	/s/ BRIAN P. SCHWARTZ
	Name:	Brian P. Schwartz
	Title:	Authorized Signatory


(a)(1)(A)		Offer to Purchase, dated August 10, 2010.*
(a)(1)(B)		Letter of Transmittal.*
(a)(1)(C)		Notice of Guaranteed Delivery.*
(a)(1)(D)		Letter from the Information Agent to Brokers, Dealers, Commercial Banks, Trust Companies and Nominees.*
(a)(1)(E)		Letter to Clients for Use by Brokers, Dealers, Commercial Banks, Trust Companies and Nominees.*
(a)(1)(F)		Joint Press Release of Health Grades, Inc. and Vestar Capital Partners V, L.P., dated July 28, 2010 (incorporated by reference to Exhibit 99.1 to the Schedule TO-C filed by Mountain Merger Sub Corp. with the Securities and Exchange Commission on July 29, 2010).*
(a)(1)(G)		Summary Advertisement as published on August 10, 2010.*
(a)(5)		Class Action Complaint and Jury Demand dated July 30, 2010 (Reginald W. Harris v. Vestar Capital Partners V, L.P. et al.).*
(a)(6)		Class Action Complaint and Jury Demand dated August 4, 2010 (Medford Bragg v. Vestar Capital Partners V, L.P. et al.).*
(a)(7)		Press Release of Affiliates of Vestar Capital Partners V, L.P., dated August 10, 2010.*
(a)(8)		Verified Class Action Complaint dated August 12, 2010 (Tove Forgo v. Health Grades, Inc. et. al.).*
(a)(9)		Verified Class Action Complaint for Breach of Fiduciary Duty dated August 16, 2010 (Peter P. Weigard v. Kerry Hicks, et. al.).*
(a)(10)		Shareholder Class Action Complaint and Jury Demand dated August 17, 2010 (Sarah E. Tomsky v. Health Grades, Inc., et. al.).*
(b)(1)		Equity Financing Commitment, dated July 27, 2010.*
(d)(1)		Agreement and Plan of Merger, dated as of July 27, 2010, by and among Mountain Acquisition Corp., Mountain Merger Sub Corp., Mountain Acquisition Holdings, LLC and Health Grades, Inc. (incorporated by reference to Exhibit 2.1 to the Form 8-K filed by Health Grades, Inc. with the Securities and Exchange Commission on July 28, 2010).*
(d)(2)		Amendment to the Agreement and Plan of Merger, dated as of August 9, 2010, by and among Mountain Acquisition Corp., Mountain Merger Sub Corp., Mountain Acquisition Holdings, LLC and Health Grades, Inc. (incorporated by reference to Exhibit 2.1 to the Form 8-K filed by Health Grades, Inc. with the Securities and Exchange Commission on August 9, 2010).*

Transaction Valuation*		Amount of Filing Fee**



$294,000,586.00		$20,962.24


Amount Previously Paid:	$20,962.24	Filing Party:	Mountain Acquisition Corp.
Form or Registration No.:	Schedule TO	Date Filed:	August 10, 2010