SEC FORM 4

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

YANG GEOFFREY Y

(Last)

(First)

(Middle)

C/O REDPOINT VENTURES

3000 SAND HILL ROAD, SUITE 290

(Street)

MENLO PARK

94025

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
BigBand Networks, Inc. [ BBND ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/15/2011

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	02/15/2011		S		24,400	D	$2.74⁽¹⁾	147,700	I	By Broadband Fund, L.P.⁽⁴⁾⁽⁵⁾
Common Stock	02/16/2011		S		20,800	D	$2.68⁽²⁾	126,900	I	By Broadband Fund, L.P.⁽⁴⁾⁽⁵⁾
Common Stock	02/17/2011		S		53,000	D	$2.67⁽³⁾	73,900	I	By Broadband Fund, L.P.⁽⁴⁾⁽⁵⁾
Common Stock								887,613	I	By Redpoint Technology Partners Q-I, L.P.⁽⁴⁾⁽⁵⁾
Common Stock								141,831	I	By Redpoint Technology Partners A-I, l.P.⁽⁴⁾⁽⁵⁾
Common Stock								8,984,679	I	By Redpoint Ventures I, L.P.⁽⁴⁾⁽⁵⁾
Common Stock								283,824	I	By Redpoint Associates I, LLC⁽⁴⁾⁽⁵⁾
Common Stock								2,307,624	I	By Redpoint Omega, L.P.⁽⁴⁾⁽⁵⁾
Common Stock								65,255	I	By Redpoint Omega Associates, LLC⁽⁴⁾⁽⁵⁾
Common Stock								46,400	D
Common Stock								2,000	I	By Kevin Wu-Bing Yang 1999 Trust U/T/A Dated 10/13/99⁽⁶⁾
Common Stock								2,000	I	By Peter Wu-Sung Yang 1998 Trust U/T/A Dated 3/19/98⁽⁷⁾

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $2.70 to $2.80 per share. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

2. Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $2.66 to $2.70 per share. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

3. Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $2.61 to $2.70 per share. The Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.

4. The Reporting Person is a Manager of BBF Management, LLC, which serves as the general partner of Broadband Fund, L.P. ("BBF"). The Reporting Person is a Manager of Redpoint Omega, LLC, which serves as the general partner of Redpoint Omega, L.P. ("RO"). The Reporting Person is a Manager of Redpoint Omega Associates, LLC ("ROA"). The Reporting Person is a Manager of Redpoint Ventures I, LLC, which serves as the general partner of Redpoint Ventures I, L.P. ("RV I"), Redpoint Technology Partners Q-I, L.P. ("RTP Q-I") and Redpoint Technology Partners A-I, L.P. ("RTP A-I"). The Reporting Person is a Manager of Redpoint Associates I, LLC ("RA"). The Reporting Person shares voting and investment power over the shares held by BBF, RO, ROA, RV I, RTP Q-I, RTP A-I and RA and disclaims beneficial ownership of the shares held by BBF, RO, ROA, RV I, RTP Q-I, RTP A-I and RA except to the extent of his proportionate pecuniary interest therein.

5. BBF Management, LLC, Redpoint Omega, LLC and Redpoint Ventures I, LLC owns no securities of the Issuer directly.

6. The shares are held by the Kevin Wu-Bing Yang 1999 Trust U/T/A Dated 10/13/99 (the "Kevin Trust"). The Reporting Person is a trustee of the Kevin Trust.

7. The shares are held by the Peter Wu-Sung Yang 1998 Trust U/T/A Dated 3/19/98 (the "Peter Trust"). The Reporting Person is a trustee of the Peter Trust.

	/s/ Geoffrey Y. Yang	02/17/2011
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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