	UNITED STATES
	SECURITIES AND EXCHANGE COMMISSION
	Washington, D.C. 20549

	SCHEDULE 13G

Under the Securities Exchange Act of 1934
(Amendment No. )(1)

FiberTower Corporation

(Name of Issuer)

Common Stock Par Value $0.001

(Title of Class of Securities)

31567R100

(CUSIP Number)

August 29, 2006

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o	Rule 13d-1(b)
x	Rule 13d-1(c)
o	Rule 13d-1(d)

(1) The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 31567R100

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Oak Investment Partners X, Limited Partnership 06-1601019

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 16,167,674 Shares of Common Stock

			6.		Shared Voting Power Not applicable

			7.		Sole Dispositive Power 16,167,674 Shares of Common Stock

			8.		Shared Dispositive Power Not applicable

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,167,674 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.5%

	12.	Type of Reporting Person (See Instructions) PN

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Oak Associates X, LLC 06-1630661

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power Not applicable

			6.		Shared Voting Power 16,167,674 Shares of Common Stock

			7.		Sole Dispositive Power Not applicable

			8.		Shared Dispositive Power 16,167,674 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,167,674 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.5%

	12.	Type of Reporting Person (See Instructions) OO-LLC

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Oak X Affiliates Fund, Limited Partnership 06-1622220

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 259,549 Shares of Common Stock

			6.		Shared Voting Power Not applicable

			7.		Sole Dispositive Power 259,549 Shares of Common Stock

			8.		Shared Dispositive Power Not applicable

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 259,549 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 0.2%

	12.	Type of Reporting Person (See Instructions) PN

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Oak X Affiliates, LLC 06-1630662

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power Not applicable

			6.		Shared Voting Power 259,549 Shares of Common Stock

			7.		Sole Dispositive Power Not applicable

			8.		Shared Dispositive Power 259,549 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 259,549 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 0.2%

	12.	Type of Reporting Person (See Instructions) OO-LLC

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Oak Management Corporation 06-0990851

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization Delaware

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power Not applicable

			6.		Shared Voting Power 16,427,223 Shares of Common Stock

			7.		Sole Dispositive Power Not applicable

			8.		Shared Dispositive Power 16,427,223 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,427,223 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.6%

	12.	Type of Reporting Person (See Instructions) CO

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Bandel L. Carano

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 Shares of Common Stock

			6.		Shared Voting Power 16,427,223 Shares of Common Stock

			7.		Sole Dispositive Power 0 Shares of Common Stock

			8.		Shared Dispositive Power 16,427,223 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,427,223 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.6%

	12.	Type of Reporting Person (See Instructions) IN

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Gerald R. Gallagher

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 Shares of Common Stock

			6.		Shared Voting Power 16,427,223 Shares of Common Stock

			7.		Sole Dispositive Power 0 Shares of Common Stock

			8.		Shared Dispositive Power 16,427,223 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,427,223 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.6%

	12.	Type of Reporting Person (See Instructions) IN

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Edward F. Glassmeyer

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 Shares of Common Stock

			6.		Shared Voting Power 16,427,223 Shares of Common Stock

			7.		Sole Dispositive Power 0 Shares of Common Stock

			8.		Shared Dispositive Power 16,427,223 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,427,223 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.6%

	12.	Type of Reporting Person (See Instructions) IN

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Fredric W. Harman

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 Shares of Common Stock

			6.		Shared Voting Power 16,427,223 Shares of Common Stock

			7.		Sole Dispositive Power 0 Shares of Common Stock

			8.		Shared Dispositive Power 16,427,223 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,427,223 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.6%

	12.	Type of Reporting Person (See Instructions) IN

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) Ann H. Lamont

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 Shares of Common Stock

			6.		Shared Voting Power 16,427,223 Shares of Common Stock

			7.		Sole Dispositive Power 0 Shares of Common Stock

			8.		Shared Dispositive Power 16,427,223 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,427,223 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.6%

	12.	Type of Reporting Person (See Instructions) IN

SEE INSTRUCTIONS BEFORE FILLING OUT!

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of above persons (entities only) David B. Walrod

	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)		o
		(b)		x

	3.	SEC Use Only

	4.	Citizenship or Place of Organization United States

Number of Shares Beneficially Owned by Each Reporting Person With			5.		Sole Voting Power 0 Shares of Common Stock

			6.		Shared Voting Power 16,427,223 Shares of Common Stock

			7.		Sole Dispositive Power 0 Shares of Common Stock

			8.		Shared Dispositive Power 16,427,223 Shares of Common Stock

	9.	Aggregate Amount Beneficially Owned by Each Reporting Person 16,427,223 Shares of Common Stock

	10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o

	11.	Percent of Class Represented by Amount in Row (9) 11.6%

	12.	Type of Reporting Person (See Instructions) IN

SEE INSTRUCTIONS BEFORE FILLING OUT!

Schedule 13G

Common Stock Par Value $0.001

CUSIP No. 31567R100

Item 1.
	(a)	Name of Issuer FiberTower Corporation
	(b)	Address of Issuer’s Principal Executive Offices 185 Berry Street Suite 4800 San Francisco, California 94107

Item 2.
	(a)	Name of Person Filing Oak Investment Partners X, Limited Partnership Oak Associates X, LLC Oak X Affiliates Fund, Limited Partnership Oak X Affiliates, LLC Oak Management Corporation Bandel L. Carano Gerald R. Gallagher Edward F. Glassmeyer Fredric W. Harman Ann H. Lamont David B. Walrod
	(b)	Address of Principal Business Office or, if none, Residence c/o Oak Management Corporation One Gorham Island Westport, Connecticut 06880
	(c)	Citizenship Please refer to Item 4 on each cover sheet for each filing person.
	(d)	Title of Class of Securities Common stock, par value $0.001 per share
	(e)	CUSIP Number 31567R100

Item 3.	If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
	(a)	o	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o).
	(b)	o	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c).
	(c)	o	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c).
	(d)	o	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8).
	(e)	o	An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);
	(f)	o	An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);
	(g)	o	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
	(h)	o	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
	(i)	o	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
	(j)	o	Group, in accordance with §240.13d-1(b)(1)(ii)(J).
	Not applicable

Item 4.	Ownership
Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.
	(a)	Amount beneficially owned:
	(b)	Percent of class:
	(c)	Number of shares as to which the person has:
		(i)	Sole power to vote or to direct the vote
		(ii)	Shared power to vote or to direct the vote
		(iii)	Sole power to dispose or to direct the disposition of
		(iv)	Shared power to dispose or to direct the disposition of

The approximate percentages of shares of Common Stock reported as beneficially owned by the Reporting Persons are based upon 141,089,379 shares of Common Stock outstanding as of August 29, 2006, as provided by the Issuer’s representatives.
By making this filing, the Reporting Persons acknowledge that they may be deemed to constitute a “group” within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, in connection with the securities of the Issuer. Each Reporting Person disclaims the existence of a “group” and disclaims beneficial ownership of all shares of Common Stock or securities convertible into or exercisable for Common Stock other than any shares or other securities reported herein as being owned by it, him or her, as the case may be.
Please see Items 5, 6, 7, 8, 9 and 11 for each cover sheet for each filing entity.

Item 5.	Ownership of Five Percent or Less of a Class
If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following o.

Item 6.	Ownership of More than Five Percent on Behalf of Another Person
Not applicable

Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person
Not applicable

Item 8.	Identification and Classification of Members of the Group
Not applicable

Item 9.	Notice of Dissolution of Group
Not applicable

Item 10.	Certification
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Signature:

Dated: September 7, 2006

Entities:

Oak Investment Partners X, Limited Partnership

Oak Associates X, LLC

Oak X Affiliates Fund, Limited Partnership

Oak X Affiliates, LLC

Oak Management Corporation



	By:	/s/ Edward F. Glassmeyer
		Edward F. Glassmeyer, as
		General Partner or
		Managing Member or as
		Attorney-in-fact for the
		above-listed entities

Individuals:

Bandel L. Carano

Gerald R. Gallagher

Edward F. Glassmeyer

Fredric W. Harman

Ann H. Lamont

David B. Walrod



	By:	/s/ Edward F. Glassmeyer
		Edward F. Glassmeyer,
		Individually and as
		Attorney-in-fact for the
		above-listed individuals

INDEX TO EXHIBITS

EXHIBIT A	Agreement of Reporting Persons

EXHIBIT B	Power of Attorney

EXHIBIT A

Agreement of Reporting Persons

Each of the undersigned hereby agrees that this Schedule 13G filed on the date hereof with respect to the shares of Common Stock of FiberTower Corporation has been filed on behalf of the undersigned.

Signature:

Dated: September 7, 2006

Entities:

Oak Investment Partners X, Limited Partnership

Oak Associates X, LLC

Oak X Affiliates Fund, Limited Partnership

Oak X Affiliates, LLC

Oak Management Corporation


	By:	/s/ Edward F. Glassmeyer
		Edward F. Glassmeyer, as
		General Partner or
		Managing Member or as
		Attorney-in-fact for the
		above-listed entities

Individuals:

Bandel L. Carano

Gerald R. Gallagher

Edward F. Glassmeyer

Fredric W. Harman

Ann H. Lamont

David B. Walrod


	By:	/s/ Edward F. Glassmeyer
		Edward F. Glassmeyer,
		Individually and as
		Attorney-in-fact for the
		above-listed individuals

EXHIBIT B

Power of Attorney

The undersigned hereby make, constitute and appoint each of Edward F. Glassmeyer and Ann H. Lamont, acting jointly or individually, with full power of substitution, the true and lawful attorney-in-fact for the undersigned, in the undersigned’s name, place and stead and on the undersigned’s behalf, to complete, execute and file with the United States Securities and Exchange Commission (the “Commission”), a statement on Schedule 13G and/or 13D with respect to the securities of FIBERTOWER CORPORATION, and any and all amendments thereto pursuant to Section 13(d) of the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder, and any other forms, certificates, documents or instruments (including a Joint Filing Agreement) that the attorneys-in-fact (or either of them) deems necessary or appropriate in order to enable the undersigned to comply with the requirements of said Section 13(d) and said rules and regulations.

This Power of Attorney shall remain in effect for a period of two years from the date hereof or until such earlier date as a written revocation thereof is filed with the Commission.

Dated: September 7, 2006

Oak Management Corporation


By:		/s/ Edward F. Glassmeyer
	Name: Edward F. Glassmeyer
	Title: President

Oak Investment Partners X, Limited Partnership
By: Oak Associates X, LLC, its general partner


By:		/s/ Edward F. Glassmeyer
	Name: Edward F. Glassmeyer
	Title: Managing Member

Oak Associates X, LLC


By:		/s/ Edward F. Glassmeyer
	Name: Edward F. Glassmeyer
	Title: Managing Member

Oak X Affiliates Fund, Limited Partnership
By: Oak X Affiliates, LLC


By:		/s/ Edward F. Glassmeyer
	Name: Edward F. Glassmeyer
	Title: Managing Member

Oak X Affiliates, LLC


By:		/s/ Edward F. Glassmeyer
	Name: Edward F. Glassmeyer
	Title: Managing Member


/s/ Bandel L. Carano
	Bandel L. Carano


/s/ Gerald R. Gallagher
	Gerald R. Gallagher


/s/ Edward F. Glassmeyer
	Edward F. Glassmeyer


/s/ Fredric W. Harman
	Fredric W. Harman


/s/ Ann H. Lamont
	Ann H. Lamont


/s/ David B. Walrod
	David B. Walrod