Document:

Warrant to purchase stock, dated November 5, 2004

 Exhibit 4.5 
 THIS WARRANT HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED OR ANY STATE SECURITIES LAWS. NO SALE OR DISPOSITION MAY BE EFFECTED WITHOUT (i) EFFECTIVE REGISTRATION STATEMENTS RELATED THERETO, (ii) AN OPINION OF
COUNSEL OR OTHER EVIDENCE, REASONABLY SATISFACTORY TO THE COMPANY, THAT SUCH REGISTRATIONS ARE NOT REQUIRED, (iii) RECEIPT OF NO-ACTION LETTERS FROM THE APPROPRIATE GOVERNMENTAL AUTHORITIES, OR (iv) OTHERWISE COMPLYING WITH THE PROVISIONS
OF SECTION 7 OF THIS WARRANT. 
 BIGBAND NETWORKS. INC. 
 WARRANT TO PURCHASE SHARES 
 OF SERIES E-1 PREFERRED STOCK 
 THIS CERTIFIES THAT, for value received, HORIZON TECHNOLOGY FUNDING COMPANY LLC and its assignees are entitled to subscribe for and purchase shares of
the fully paid and nonassessable Series E-1 Preferred Stock as is determined pursuant to the next paragraph hereof (as adjusted pursuant to Section 4 hereof, the “Shares”) of BIGBAND NETWORKS, INC., a Delaware corporation (the
“Company”), at the price of $1.0915 per share (such price and such other price as shall result, from time to time, from the adjustments specified in Section 4 hereof is herein referred to as the “Warrant Price”), subject to
the provisions and upon the terms and conditions hereinafter set forth. As used herein, (a) the term “Series Preferred” shall mean the Company’s presently authorized Series E-1 Preferred Stock, and any stock into or for which
such Series E-1 Preferred Stock may hereafter be converted or exchanged, and after the automatic conversion of the Series E-1 Preferred Stock to Class A Common Stock shall mean the Company’s Class A Common Stock, (b) the term
“Date of Grant” shall mean November 5, 2004, and (c) the term “Other Warrants” shall mean any other warrants issued by the Company in connection with the transaction with respect to which this Warrant was issued, and
any warrant issued upon transfer or partial exercise of or in lieu of this Warrant. The term “Warrant” as used herein shall be deemed to include Other Warrants unless the context clearly requires otherwise. 
 The number of shares for which this Warrant is exercisable shall be equal to the lesser of (a) 1,282,639 or (b) the greater of
(i) ten percent (10%) of the highest aggregate principal amount of Advances (as defined in the Loan Agreement) ever outstanding at one time (the “Highwater Mark”) under a certain Loan and Security Agreement by and between the
Company and Horizon Technology Funding Company LLC (“Lender”) dated on or about the Date of Grant (the “Loan Agreement”) divided by the Warrant Price or (ii) 641,319. Notwithstanding the foregoing, if holder exercises its
right to purchase the maximum number of shares holder is entitled to purchase at such time as Lender is obligated to make additional Advances under the Loan Agreement, the Highwater Mark shall be fixed on the date of such exercise at the Highwater
Mark on such date and holder shall have no more right to purchase shares under this Warrant. If the holder exercises its rights to purchase shares in an amount less than the maximum amount of shares it is entitled to purchase on the date of exercise
and at such time as Lender is obligated to make additional Advances under the Loan Agreement, if the highest aggregate principal amount of Advances outstanding at one time exceeds the Highwater Mark on the date of the previous exercise of
holder’s right to purchase 

 shares, the Highwater Mark shall be increased to the highest aggregate principal amount of Advances outstanding after
such partial exercise and the Warrant shall be exerciseable for the number of shares calculated according to the above formula less the number of shares previously received by the holder from its exercise of its right to purchase shares under this
Warrant. 
 1. Term. The purchase right represented by this Warrant is exercisable, in whole or in part, at any time and from time to
time from the Date of Grant through the later of (i) seven (7) years after the Date of Grant or (ii) three (3) years after the closing of the Company’s initial public offering of its Class A Common Stock
(“IPO”) effected pursuant to a Registration Statement on Form S-l (or its successor) filed under the Securities Act of 1933, as amended (the “Act”), Upon request of the Company, the holder of this Warrant agrees that upon either
(i) the sale of all or substantially all of the assets or stock (whether by merger or otherwise) of the Company wherein the sole consideration in any such transaction is cash or shares issued by an entity described in subsection
(ii) below, or (ii) the sale or merger of the Company to or with an entity whose shares are publicly traded in the United States, that either (y) the holder of this Warrant will exercise the purchase right under this Warrant
(including, without limitation, by way of net issuance as provided in Section 10.2) and such exercise will be deemed effective upon the completion of such sale or merger or (z) if the holder of this Warrant elects not to exercise this
Warrant, this Warrant will expire upon the completion of such sale or merger. The Company shall provide the holder of this Warrant not less than twenty (20) business days’ prior written notice in accordance with the provisions of
Section 14. 
 2. Method of Exercise; Payment; Issuance of New Warrant. Subject to Section 1 hereof, the purchase right
represented by this Warrant may be exercised by the holder hereof, in whole or in part and from time to time, at the election of the holder hereof, by (a) the surrender of this Warrant (with the notice of exercise substantially in the form
attached hereto as Exhibit A-l duly completed and executed) at the principal office of the Company and by the payment to the Company, by certified or bank check, or by wire transfer to an account designated by the Company (a “Wire
Transfer”) of an amount equal to the then applicable Warrant Price multiplied by the number of Shares then being purchased; (b) if in connection with a registered public offering of the Company’s securities, the surrender of this
Warrant (with the notice of exercise form attached hereto as Exhibit A-2 duly completed and executed) at the principal office of the Company together with notice of arrangements reasonably satisfactory to the Company for payment to the Company
either by certified or bank check or by Wire Transfer from the proceeds of the sale of shares to be sold by the holder in such public offering of an amount equal to the then applicable Warrant Price per share multiplied by the number of Shares then
being purchased; or (c) exercise of the “net issuance” right provided for in Section 10.2 hereof. The person or persons in whose name(s) any certificate(s) representing shares of Series Preferred shall be issuable upon exercise
of this Warrant shall be deemed to have become the holder(s) of record of, and shall be treated for all purposes as the record holder(s) of, the shares represented thereby (and such shares shall be deemed to have been issued) immediately prior to
the close of business on the date or dates upon which this Warrant is exercised. In the event of any exercise of the rights represented by this Warrant, certificates for the shares of stock so purchased shall be delivered to the holder hereof as
soon as possible and in any event within thirty (30) days after such exercise and, unless this Warrant has been fully exercised or expired, a new Warrant representing the portion of the Shares, if any, with respect to which this Warrant shall
not then have been exercised shall also be issued to the holder hereof as soon as possible and in any event within such thirty-day period; provided, however, at such time as the Company is subject to the reporting 
  

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 requirements of the Securities Exchange Act of 1934, as amended, if requested by the holder of this Warrant, the Company
shall cause its transfer agent to deliver the certificate representing Shares issued upon exercise of this Warrant to a broker or other person (as directed by the holder exercising this Warrant) within the time period required to settle any trade
made by the holder after exercise of this Warrant. 
 3. Stock Fully Paid; Reservation of Shares. All Shares that may be issued upon
the exercise of the rights represented by this Warrant will, upon issuance pursuant to the terms and conditions herein, be fully paid and nonassessable, and free from all preemptive rights and taxes, liens and charges with respect to the issue
thereof. During the period within which the rights represented by this Warrant may be exercised, the Company will at all times have authorized, and reserved for the purpose of the issue upon exercise of the purchase rights evidenced by this Warrant,
a sufficient number of shares of its Series Preferred to provide for the exercise of the rights represented by this Warrant and a sufficient number of shares of its Class A Common Stock to provide for the conversion of the Series Preferred into
Class A Common Stock. 
 4. Adjustment of Warrant Price and Number of Shares. Subject to the provisions of Section 1 above,
the number and kind of securities purchasable upon the exercise of this Warrant and the Warrant Price shall be subject to adjustment from time to time upon the occurrence of certain events, as follows: 
 (a) Reclassification or Merger. Incase of any reclassification or change of securities of the class issuable upon exercise of this Warrant (other
than a change in par value, or from par value to no par value, or from no par value to par value, or as a result of a subdivision or combination), or in case of any merger of the Company with or into another corporation (other than a merger with
another corporation in which the Company is the acquiring and the surviving corporation and which does not result in any reclassification or change of outstanding securities issuable upon exercise of this Warrant), or in case of any sale of all or
substantially all of the assets of the Company, the Company, or such successor or purchasing corporation, as the case may be, shall duly execute and deliver to the holder of this Warrant a new Warrant (in form and substance satisfactory to the
holder of this Warrant), so that the holder of this Warrant shall have the right to receive upon exercise of this Warrant, at a total purchase price not to exceed that payable upon the exercise of the unexercised portion of this Warrant, and in lieu
of the shares of Series Preferred theretofore issuable upon exercise of this Warrant, (i) the kind and amount of shares of stock, other securities, money and property receivable upon such reclassification, change, merger or sale by a holder of
the number of shares of Series Preferred then purchasable under this Warrant, or (ii) in the case of such a merger or sale in which the consideration paid consists all or in part of assets other than securities of the successor or purchasing
corporation, at the option of the holder of this Warrant, the securities of the successor or purchasing corporation having a value at the time of the transaction equivalent to the value of the Series Preferred purchasable upon exercise of this
Warrant at the time of the transaction. Any new Warrant shall provide for adjustments that shall be as nearly equivalent as may be practicable to the adjustments provided for in this Section 4. The provisions of this Section 4(a) shall
similarly apply to successive reclassifications, changes, mergers and sales. 
 (b) Subdivision or Combination of Shares. If the
Company at any time while this Warrant remains outstanding and unexpired shall subdivide or combine its outstanding shares of 
  

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 Series Preferred, the Warrant Price shall be proportionately decreased and the number of Shares issuable hereunder shall
be proportionately increased in the case of a subdivision and the Warrant Price shall be proportionately increased and the number of Shares issuable hereunder shall be proportionately decreased in the case of a combination. 
 (c) Stock Dividends and Other Distributions. If the Company at any time while this Warrant is outstanding and unexpired shall (i) pay a
dividend with respect to Series Preferred payable in Series Preferred, then the Warrant Price shall be adjusted, from and after the date of determination of shareholders entitled to receive such dividend or distribution, to that price determined by
multiplying the Warrant Price in effect immediately prior to such date of determination by a fraction (A) the numerator of which shall be the total number of shares of Series Preferred outstanding immediately prior to such dividend or
distribution, and (B) the denominator of which shall be the total number of shares of Series Preferred outstanding immediately after such dividend or distribution; or (ii) make any other distribution with respect to Series Preferred
(except any distribution specifically provided for in Sections 4(a) and 4(b)), then, in each such case, provision shall be made by the Company such that the holder of this Warrant shall receive upon exercise of this Warrant a proportionate share of
any such dividend or distribution as though it were the holder of the Series Preferred (or Class A Common Stock issuable upon conversion thereof) as of the record date fixed for the determination of the shareholders of the Company entitled to
receive such dividend or distribution. 
 (d) Adjustment of Number of Shares. Upon each adjustment in the Warrant Price, the number of
Shares of Series Preferred purchasable hereunder shall be adjusted, to the nearest whole share, to the product obtained by multiplying the number of Shares purchasable immediately prior to such adjustment in the Warrant Price by a fraction, the
numerator of which shall be the Warrant Price immediately prior to such adjustment and the denominator of which shall be the Warrant Price immediately thereafter. 
 (e) Antidilution Rights. The other antidilution rights applicable to the Shares of Series Preferred purchasable hereunder are set forth in the Company’s Certificate of Incorporation, as amended through the
Date of Grant (the “Charter”). In the event that such antidilution protections are waived, restated, amended or modified in any manner which adversely affects the holder without such holder’s prior written consent while this Warrant
is in effect then the Company agrees to make appropriate arrangements to provide the holder with the benefits of such antidilution protections as if such had not been so amended, modified or waived. The foregoing arrangements shall include but not
be limited to, the issuance of additional shares of Class A Common Stock upon conversion of the shares of Series Preferred issuable to the holder hereunder. The Company shall promptly provide the holder hereof with any restatement, amendment,
modification or waiver of the Charter promptly after the same has been made. 
 5. Notice of Adjustments. Whenever the Warrant Price
or the number of Shares purchasable hereunder shall be adjusted pursuant to Section 4 hereof, the Company shall make a certificate signed by its chief financial officer setting forth, in reasonable detail, the event requiring the adjustment,
the amount of the adjustment, the method by which such adjustment was calculated, and the Warrant Price and the number of Shares purchasable hereunder after giving effect to such adjustment, and shall cause copies of such certificate to be mailed
(without regard to Section 13 
  

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 hereof, by first class mail, postage prepaid) to the holder of this Warrant. In addition, whenever the conversion price
or conversion ratio of the Series Preferred shall be adjusted, the Company shall make a certificate signed by its chief financial officer setting forth, in reasonable detail, the event requiring the adjustment, the amount of the adjustment, the
method by which such adjustment was calculated, and the conversion price or ratio of the Series Preferred after giving effect to such adjustment, and shall cause copies of such certificate to be mailed (without regard to Section 13 hereof, by
first class mail, postage prepaid) to the holder of this Warrant. 
 6. Fractional Shares. No fractional shares of Series Preferred
will be issued in connection with any exercise hereunder, but in lieu of such fractional shares the Company shall make a cash payment therefor based on the fair market value of the Series Preferred on the date of exercise as reasonably determined in
good faith by the Company’s Board of Directors. 
 7. Compliance with Act; Disposition of Warrant or Shares of Series Preferred.

 (a) Compliance with Act. The holder of this Warrant, by acceptance hereof, agrees that this Warrant, and the shares of Series
Preferred to be issued upon exercise hereof and any Class A Common Stock issued upon conversion thereof are being acquired for investment and that such holder will not offer, sell or otherwise dispose of this Warrant, or any shares of Series
Preferred to be issued upon exercise hereof or any Class A Common Stock issued upon conversion thereof except under circumstances which will not result in a violation of the Act or any applicable state securities laws. Upon exercise of this
Warrant, unless the Shares being acquired are registered under the Act and any applicable state securities laws or an exemption from such registration is available, the holder hereof shall confirm in writing that the shares of Series Preferred so
purchased (and any shares of Class A Common Stock issued upon conversion thereof) are being acquired for investment and not with a view toward distribution or resale in violation of the Act and shall confirm such other matters related thereto
as may be reasonably requested by the Company. This Warrant and all shares of Series Preferred issued upon exercise of this Warrant and all shares of Class A Common Stock issued upon conversion thereof (unless registered under the Act and any
applicable state securities laws) shall be stamped or imprinted with a legend in substantially the following form: 
 “THE SECURITIES EVIDENCED HEREBY
HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY STATE SECURITIES LAWS. NO SALE OR DISPOSITION MAY BE EFFECTED WITHOUT (i) EFFECTIVE REGISTRATION STATEMENTS RELATED THERETO, (ii) AN OPINION OF COUNSEL OR OTHER
EVIDENCE, REASONABLY SATISFACTORY TO THE COMPANY, THAT SUCH REGISTRATIONS ARE NOT REQUIRED, (iii) RECEIPT OF NO-ACTION LETTERS FROM THE APPROPRIATE GOVERNMENTAL AUTHORITIES, OR (iv) OTHERWISE COMPLYING WITH THE PROVISIONS OF SECTION 7 OF
THE WARRANT UNDER WHICH THESE SECURITIES WERE ISSUED, DIRECTLY OR INDIRECTLY.” 
 Said legend shall be removed by the Company, upon the
request of a holder, at such time as the restrictions on the transfer of the applicable security shall have terminated. In addition, in connection with the issuance of this Warrant, the holder specifically represents to the Company by acceptance of
this Warrant as follows: 
  

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 (1) The holder is aware of the Company’s business affairs and financial condition, and has acquired
information about the Company sufficient to reach an informed and knowledgeable decision to acquire this Warrant. The holder is acquiring this Warrant for its own account for investment purposes only and not with a view to, or for the resale in
connection with, any “distribution” thereof in violation of the Act. 
 (2) The holder understands that this Warrant has not been
registered under the Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of the holder’s investment intent as expressed herein. 
 (3) The holder further understands that this Warrant must be held indefinitely unless subsequently registered under the Act and qualified under any
applicable state securities laws, or unless exemptions from registration and qualification are otherwise available. The holder is aware of the provisions of Rule 144, promulgated under the Act. 
 (4) The holder is an “accredited investor” as such term is defined in Rule 501 of Regulation D promulgated under the Act. 
 (b) Disposition of Warrant or Shares. With respect to any offer, sale or other disposition of this Warrant or any shares of Series Preferred
acquired pursuant to the exercise of this Warrant prior to registration of such Warrant or shares, the holder hereof agrees to give written notice to the Company prior thereto, describing briefly the manner thereof, together with a written opinion
of such holder’s counsel, or other evidence, if reasonably satisfactory to the Company, to the effect that such offer, sale or other disposition may be effected without registration or qualification (under the Act as then in effect or any
federal or state securities law then in effect) of this Warrant or such shares of Series Preferred or Class A Common Stock and indicating whether or not under the Act certificates for this Warrant or such shares of Series Preferred to be sold
or otherwise disposed of require any restrictive legend as to applicable restrictions on transferability in order to ensure compliance with such law. Upon receiving such written notice and reasonably satisfactory opinion or other evidence, the
Company, as promptly as practicable but no later than fifteen (15) days after receipt of the written notice, shall notify such holder that such holder may sell or otherwise dispose of this Warrant or such shares of Series Preferred or
Class A Common Stock, all in accordance with the terms of the notice delivered to the Company. If a determination has been made pursuant to this Section 7(b) that the opinion of counsel for the holder or other evidence is not reasonably
satisfactory to the Company, the Company shall so notify the holder promptly with details thereof after such determination has been made. Notwithstanding the foregoing, this Warrant or such shares of Series Preferred or Class A Common Stock
may, as to such federal laws, be offered, sold or otherwise disposed of in accordance with Rule 144 or 144A under the Act, provided that the Company shall have been furnished with such information as the Company may reasonably request to provide a
reasonable assurance that the provisions of Rule 144 or 144A have been satisfied. Each certificate representing this Warrant or the shares of Series Preferred thus transferred (except a transfer pursuant to Rule 144 or 144A) shall bear a legend as
to the applicable restrictions on transferability in order to ensure compliance with such laws, unless in the aforesaid opinion of counsel for the holder, such legend is not required in order to ensure compliance with such laws. Notwithstanding any
provisions of this Warrant, the Board of Directors of the Company shall have the right to prohibit any transfer of this Warrant or any shares to a third party in the event that, in its 
  

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 reasonable judgment, the Board determines that the proposed transferee is an entity which is in direct or indirect
competition with the Company or has any conflict of interests with the Company. The Company may issue stop transfer instructions to its transfer agent in connection with such restrictions. 
 (c) Applicability of Restrictions. Neither any restrictions of any legend described in this Warrant nor the requirements of Section 7(b)
above shall apply to any transfer of, or grant of a security interest in, this Warrant (or the Series Preferred or Class A Common Stock obtainable upon exercise thereof) or any part hereof (i) to a partner of the holder if the holder is a
partnership or to a member of the holder if the holder is a limited liability company, (ii) to a partnership of which the holder is a partner or to a limited liability company of which the holder is a member, or (iii) to any affiliate of the
holder if the holder is a corporation; provided, however, in any such transfer, if applicable, the transferee shall on the Company’s request agree in writing to be bound by the terms of this Warrant as if an original holder
hereof. 
 8. Rights as Shareholders; Information. No holder of this Warrant, as such, shall be entitled to vote or receive dividends
or be deemed the holder of Series Preferred or any other securities of the Company which may at any time be issuable upon the exercise hereof for any purpose, nor shall anything contained herein be construed to confer upon the holder of this
Warrant, as such, any of the rights of a shareholder of the Company or any right to vote for the election of directors or upon any matter submitted to shareholders at any meeting thereof, or to receive notice of meetings, or to receive dividends or
subscription rights or otherwise until this Warrant shall have been exercised and the Shares purchasable upon the exercise hereof shall have become deliverable, as provided herein. Notwithstanding the foregoing, the Company will transmit to the
holder of this Warrant such information, documents and reports as are generally distributed to the holders of any class or series of the securities of the Company concurrently with the distribution thereof to the shareholders. 
 9. Registration Rights. Upon exercise of this Warrant, the holder shall be entitled, with respect to any Class A Common Stock of the Company
obtained upon conversion, to the Incidental (“Piggyback”) Registration Rights and the S-3 Registration Rights currently afforded to certain existing shareholders of the Company pursuant to that certain Fifth Amended and Restated Investors
Rights Agreement, dated as of June 29, 2004 by and among the Company and the parties thereto, (the “Rights Agreement”), as described in Section 7 thereof, attached hereto as Exhibit C. The holder agrees that it shall be entitled
to the benefits and subject to the restrictions set forth in the provisions listed in such Exhibit C hereto. For this purpose, the term “Registrable Securities” as used in the Rights Agreement shall be deemed to include the shares of
Class A Common Stock of the Company obtained upon conversion and the holder of this Warrant shall be deemed to be a “Holder” for purposes of such Section of the Rights Agreement. None of the registration rights set forth in, arising
under, or created by this Warrant may be assigned or transferred without prior written consent in writing of the Company with the exception of the following transfers or assignments in connection with a permitted transfer of this Warrant or the
Shares: 
 (1) Assignment and transfers from the holder hereof to any entity which controls, is controlled by or is under common control
with such holder; 
  

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 (2) If the holder is a limited partnership, assignments and transfers to its partners or members and to
affiliated limited partnerships managed by the same management company or managing partner or by an entity which controls, is controlled by, or is under common control with, such management company or managing general partner, provided, however,
that no such assignment or transfer shall become effective unless each of such transferees has provided the Company with a confirmation in writing that it is bound by all terms and conditions of this Warrant as if it were an original party to it; or

 (3) Assignment or transfer to a party which acquires, or has the right to acquire pursuant to a warrant, at least two hundred thousand
(200,000) shares of Registrable Securities (as defined in the Rights Agreement) (as adjusted for stock splits and combinations). 
 10.
Additional Rights. 
 10.1 Acquisition Transactions. The Company shall provide the holder of this Warrant with at least twenty
(20) days’ written notice prior to closing thereof of the terms and conditions of any of the following transactions (to the extent the Company has notice thereof): (i) the sale, lease, exchange, conveyance or other disposition of all
or substantially all of the Company’s property or business, or (ii) its merger into or consolidation with any other corporation (other than a wholly-owned subsidiary of the Company), or any transaction (including a merger or other
reorganization) or series of related transactions, in which more than 50% of the voting power of the Company is disposed of. 
 10.2 Right
to Convert Warrant into Stock: Net Issuance. 
 (a) Right to Convert. In addition to and without limiting the rights of the holder
under the terms of this Warrant, the holder shall have the right to convert this Warrant or any portion thereof (the “Conversion Right”) into shares of Series Preferred as provided in this Section 10.2 at any time or from time to time
during the term of this Warrant. Upon exercise of the Conversion Right with respect to a particular number of shares subject to this Warrant (the “Converted Warrant Shares”), the Company shall deliver to the holder (without payment by the
holder of any exercise price or any cash or other consideration) that number of shares of fully paid and nonassessable Series Preferred as is determined according to the following formula: 
  

			
	X =	 	B - A
		 	   Y

  

							
	Where:	  	X	  	=	  	the number of shares of Series Preferred that shall be issued to holder
				
		  	Y	  	=	  	the fair market value of one share of Series Preferred
				
		  	A	  	=	  	the aggregate Warrant Price of the specified number of Converted Warrant Shares immediately prior to the exercise of the Conversion Right (i.e., the number of Converted Warrant Shares
multiplied by the Warrant Price)

  

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		 		  	B	  	=	  	the aggregate fair market value of the specified number of Converted Warrant Shares (i.e., the number of Converted Warrant Shares multiplied by the fair market value of one
Converted Warrant Share)

 No fractional shares shall be issuable upon exercise of the Conversion Right, and, if the number of
shares to be issued determined in accordance with the foregoing formula is other than a whole number, the Company shall pay to the holder an amount in cash equal to the fair market value of the resulting fractional share on the Conversion Date (as
hereinafter defined). For purposes of Section 10 of this Warrant, shares issued pursuant to the Conversion Right shall be treated as if they were issued upon the exercise of this Warrant. 
 (b) Method of Exercise. The Conversion Right may be exercised by the holder by the surrender of this Warrant at the principal office of the
Company together with a written statement (which may be in the form of Exhibit A-l or Exhibit A-2 hereto) specifying that the holder thereby intends to exercise the Conversion Right and indicating the number of shares subject to this Warrant which
are being surrendered (referred to in Section 10.2(a) hereof as the Converted Warrant Shares) in exercise of the Conversion Right. Such conversion shall be effective upon receipt by the Company of this Warrant together with the aforesaid
written statement, or on such later date as is specified therein (the “Conversion Date”), and, at the election of the holder hereof, may be made contingent upon the closing of the sale of the Company’s Class A Common Stock to the
public in a public offering pursuant to a Registration Statement under the Act (a “Public Offering”). Certificates for the shares issuable upon exercise of the Conversion Right and, if applicable, a new warrant evidencing the balance of
the shares remaining subject to this Warrant, shall be issued as of the Conversion Date and shall be delivered to the holder within thirty (30) days following the Conversion Date. 
 (c) Determination of Fair Market Value. For purposes of this Section 10.2, “fair market value” of a share of Series Preferred (or
Class A Common Stock if the Series Preferred has been automatically converted into Class A Common Stock) as of a particular date (the “Determination Date”) shall mean: 
 (i) If the Conversion Right is exercised in connection with and contingent upon a Public Offering, and if the Company’s Registration Statement
relating to such Public Offering (“Registration Statement”) has been declared effective by the Securities and Exchange Commission, then the initial “Price to Public” specified in the final prospectus with respect to such
offering. 
 (ii) If the Conversion Right is not exercised in connection with and contingent upon a Public Offering, then as follows:

 (A) If traded on a securities exchange, the fair market value of the Class A Common Stock shall be deemed to be the average of the
closing prices of the Common Stock on such exchange over the five trading days immediately prior to the Determination Date, and the fair market value of the Series Preferred shall be deemed to be such fair market value of the Class A Common
Stock multiplied by the number of shares of Class A Common Stock into which each share of Series Preferred is then convertible; 
  

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 (B) If traded on the Nasdaq Stock Market or other over-the-counter system, the fair market value of the
Class A Common Stock shall be deemed to be the average of the closing bid prices of the Class A Common Stock over the five trading days immediately prior to the Determination Date, and the fair market value of the Series Preferred shall be
deemed to be such fair market value of the Class A Common Stock multiplied by the number of shares of Class A Common Stock into which each share of Series Preferred is then convertible; and 
 (C) If there is no public market for the Class A Common Stock, then fair market value shall be determined in good faith be the Board of Directors of
the Company. 
 In making a determination under clauses (A) or (B) above, if on the Determination Date, five trading days had not passed since the
IPO, then the fair market value of the Common Stock shall be the average closing prices or closing bid prices, as applicable, for the shorter period beginning on and including the date of the IPO and ending on the trading day prior to the
Determination Date (or if such period includes only one trading day the closing price or closing bid price, as applicable, for such trading day). If closing prices or closing bid prices are no longer reported by a securities exchange or other
trading system, the closing price or closing bid price shall be that which is reported by such securities exchange or other trading system at 4:00 p.m. New York City time on the applicable trading day. 
 10.3 Exercise Prior to Expiration. To the extent this Warrant is not previously exercised as to all of the Shares subject hereto, and if the fair
market value of one share of the Series Preferred is greater than the Warrant Price then in effect, this Warrant shall be deemed automatically exercised pursuant to Section 10.2 above (even if not surrendered) immediately before its expiration.
For purposes of such automatic exercise, the fair market value of one share of the Series Preferred upon such expiration shall be determined pursuant to Section 10.2(c). To the extent this Warrant or any portion thereof is deemed automatically
exercised pursuant to this Section 10.3, the Company agrees to promptly notify the holder hereof of the number of Shares, if any, the holder hereof is to receive by reason of such automatic exercise. 
 11. Adjustment Upon Mandatory Conversion. In the event that the shares of Series Preferred issuable to the holder hereof upon exercise of the
Warrant would have been subject to a Mandatory Conversion in connection with an IPO, as set forth in ARTICLE IV Section C(5) of the Charter, if such shares of Series Preferred has been held by the holder hereof at the time of such Mandatory
Conversion, then, in such event, this Warrant shall become exercisable for such shares of Class A Common Stock of the Company as the holder hereof would have received if such holder had exercised this Warrant prior to such Mandatory Conversion.

 12. Representations and Warranties. The Company represents and warrants to the holder of this Warrant as follows: 
 (a) This Warrant has been duly authorized and executed by the Company and is a valid and binding obligation of the Company enforceable in accordance with
its terms, subject to laws of general application relating to bankruptcy, insolvency and the relief of debtors and the rules of law or principles at equity governing specific performance, injunctive relief and other equitable remedies. 

 

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 (b) The Shares have been duly authorized and reserved for issuance by the Company and, when issued in
accordance with the terms hereof, will be validly issued, fully paid and nonassessable and free from preemptive rights. 
 (c) The rights,
preferences, privileges and restrictions granted to or imposed upon the Series Preferred and the holders thereof are as set forth in the Charter, and on the Date of Grant, each share of the Series Preferred represented by this Warrant is convertible
into one share of Class A Common Stock. 
 (d) The shares of Class A Common Stock issuable upon conversion of the Shares have been
duly authorized and reserved for issuance by the Company and, when issued in accordance with the terms of the Charter will be validly issued, fully paid and nonassessable. 
 (e) The execution and delivery of this Warrant are not, and the issuance of the Shares upon exercise of this Warrant in accordance with the terms hereof
will not be, inconsistent with the Company’s Charter or by-laws, do not and will not contravene any law, governmental rule or regulation, judgment or order applicable to the Company, and do not and will not conflict with or contravene any
provision of, or constitute a default under, any indenture, mortgage, contract or other instrument of which the Company is a party or by which it is bound or require the consent or approval of, the giving of notice to, the registration or filing
with or the taking of any action in respect of or by, any Federal, state or local government authority or agency or other person, except for the filing of notices pursuant to federal and state securities laws, which filings will be effected by the
time required thereby. 
 (f) There are no actions, suits, audits, investigations or proceedings pending or, to the knowledge of the Company,
threatened against the Company in any court or before any governmental commission, board or authority which, if adversely determined, could have a material adverse effect on the ability of the Company to perform its obligations under this Warrant.

 (g) The number of shares of Class A Common Stock of the Company outstanding on the date hereof, on a fully diluted basis (assuming
the conversion of all outstanding convertible securities and the exercise of all outstanding options and warrants other than this Warrant), does not exceed 241,000,000 shares. 
 13. Modification and Waiver. This Warrant and any provision hereof may be changed, waived, discharged or terminated only by an instrument in
writing signed by the party against which enforcement of the same is sought. 
 14. Notices. Any notice, request, communication or
other document required or permitted to be given or delivered to the holder hereof or the Company shall be delivered, or shall be sent by certified or registered mail, postage prepaid, to each such holder at its address as shown on the books of the
Company or to the Company at the address indicated therefor on the signature page of this Warrant. 
 15. Binding Effect on
Successors. This Warrant shall be binding upon any corporation succeeding the Company by merger, consolidation or acquisition of all or substantially all of the 
  

 -11- 

 Company’s assets, and all of the obligations of the Company relating to the Series Preferred issuable upon the
exercise or conversion of this Warrant shall survive the exercise, conversion and termination of this Warrant and all of the covenants and agreements of the Company shall inure to the benefit of the successors and assigns of the holder hereof.

 16. Lost Warrants or Stock Certificates. The Company covenants to the holder hereof that, upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction or mutilation of this Warrant or any stock certificate and, in the case of any such loss, theft or destruction, upon receipt of an indemnity reasonably satisfactory to the Company, or in
the case of any such mutilation upon surrender and cancellation of such Warrant or stock certificate, the Company will make and deliver a new Warrant or stock certificate, of like tenor, in lieu of the lost, stolen, destroyed or mutilated Warrant or
stock certificate. 
 17. Descriptive Headings. The descriptive headings of the various Sections of this Warrant are inserted for
convenience only and do not constitute a part of this Warrant. The language in this Warrant shall be construed as to its fair meaning without regard to which party drafted this Warrant. 
 18. Governing Law. This Warrant shall be construed and enforced in accordance with, and the rights of the parties shall be governed by, the laws
of the State of Delaware. 
 19. Survival of Representations, Warranties and Agreements. All representations and warranties of the
Company and the holder hereof contained herein shall survive the Date of Grant, the exercise or conversion of this Warrant (or any part hereof) or the termination or expiration of rights hereunder. All agreements of the Company and the holder hereof
contained herein shall survive indefinitely until, by their respective terms, they are no longer operative. 
 20. Remedies. In case
any one or more of the covenants and agreements contained in this Warrant shall have been breached, the holders hereof (in the case of a breach by the Company), or the Company (in the case of a breach by a holder), may proceed to protect and enforce
their or its rights either by suit in equity and/or by action at law, including, but not limited to, an action for damages as a result of any such breach and/or an action for specific performance of any such covenant or agreement contained in this
Warrant. 
 21. No Impairment of Rights. The Company will not, by amendment of its Charter or through any other means, avoid or seek
to avoid the observance or performance of any of the terms of this Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the taking of all such action as may be necessary or appropriate in order to protect
the rights of the holder of this Warrant against impairment. 
 22. Severability. The invalidity or unenforceability of any provision
of this Warrant in any jurisdiction shall not affect the validity or enforceability of such provision in any other jurisdiction, or affect any other provision of this Warrant, which shall remain in full force and effect. 
 23. Recovery of Litigation Costs. If any legal action or other proceeding is brought for the enforcement of this Warrant, or because of an alleged
dispute, breach, default, or misrepresentation in connection with any of the provisions of this Warrant, the successful or prevailing party or parties shall be entitled to recover reasonable attorneys’ fees and other costs incurred in that
action or proceeding, in addition to any other relief to which it or they may be entitled. 
  

 -12- 

 24. Entire Agreement. This Warrant constitutes the entire agreement between the parties pertaining
to the subject matter contained in it and supersedes all prior and contemporaneous agreements, representations, and undertakings of the parties, whether oral or written, with respect to such subject matter. 
  

 -13- 

 The Company has caused this Warrant to be duly executed and delivered as of the Date of Grant specified
above. 
  

			
	BIGBAND NETWORKS, INC.
		
	By:	 	 /s/ Amir Bassan-Eskenazi

	Name:	 	Amir Bassan-Eskenazi
	Title:	 	President & CEO
	Address:	 	475 Broadway
		 	Redwood City, CA 94063

  

 -14- 

 EXHIBIT A-l 
 NOTICE OF EXERCISE 
  

	To:	BIGBAND NETWORKS, INC. (the “Company”) 

 1. The
undersigned hereby: 
  

	 	 ̈	elects to purchase                      shares of [Series Preferred Stock]
[Class A Common Stock] of the Company pursuant to the terms of the attached Warrant, and tenders herewith payment of the purchase price of such shares in full, or 

  

	 	 ̈	elects to exercise its net issuance rights pursuant to Section 10.2 of the attached Warrant with respect to
                     Shares of [Series Preferred Stock] [Class A Common Stock]. 

 2. Please issue a certificate or certificates representing
                     shares in the name of the undersigned or in such other name or names as are specified below: 
  

	
	  

	(Name)
	  
  

	  

	(Address)

 3. The undersigned represents that the aforesaid shares are being acquired for the account of the
undersigned for investment and not with a view to, or for resale in connection with, the distribution thereof and that the undersigned has no present intention of distributing or reselling such shares, all except as in compliance with applicable
securities laws. 
  

	
	  

	(Signature)

  

			
	  
	 	
	(Date)	 	

 EXHIBIT A-2 
 NOTICE OF EXERCISE 
  

	To:	BIGBAND NETWORKS, INC. (the “Company”) 

 1.
Contingent upon and effective immediately prior to the closing (the “Closing”) of the Company’s public offering contemplated by the Registration Statement on Form S        , filed
                     200  , the undersigned hereby: 
  

	 	 ̈	elects to purchase                      shares of [Series Preferred Stock]
[Class A Common Stock] of the Company (or such lesser number of shares as may be sold on behalf of the undersigned at the Closing) pursuant to the terms of the attached Warrant, or 

  

	 	 ̈	elects to exercise its net issuance rights pursuant to Section 10.2 of the attached Warrant with respect to
                     Shares of [Series Preferred Stock] [Class A Common Stock]. 

 2. Please deliver to the custodian for the selling shareholders a stock certificate representing such
                     shares. 
 3.
The undersigned has instructed the custodian for the selling shareholders to deliver to the Company $                     or, if less, the net
proceeds due the undersigned from the sale of shares in the aforesaid public offering. If such net proceeds are less than the purchase price for such shares, the undersigned agrees to deliver the difference to the Company prior to the Closing.

  

	
	  

	(Signature)

  

			
	  
	 	
	(Date)Form of Indemnification Agreement

 Exhibit 10.1 
 BIGBAND NETWORKS, INC. 
 INDEMNIFICATION AGREEMENT 
 THIS AGREEMENT is entered into, effective as of
                    , 2006 by and between BigBand Networks, Inc., a Delaware corporation (the “Company”), and
                     (“Indemnitee”), effective as of the date that the Registration Statement on Form S-1 related to the
initial public offering of the Company’s Common Stock is declared effective by the United States Securities and Exchange Commission. 
 WHEREAS, it is essential to the Company to retain and attract as directors and officers the most capable persons available; 
 WHEREAS, Indemnitee is a director and/or officer of the Company; 
 WHEREAS, both the Company and Indemnitee recognize the increased
risk of litigation and other claims currently being asserted against directors and officers of corporations; 
 WHEREAS, the Amended and
Restated Certificate of Incorporation (the “Certificate of Incorporation”) and Amended and Restated Bylaws (the “Bylaws”) of the Company require the Company to indemnify and advance expenses to its directors and
officers to the fullest extent permitted under Delaware law, and the Indemnitee has been serving and continues to serve as a director and/or officer of the Company in part in reliance on the Company’s Certificate of Incorporation and Bylaws;
and 
 WHEREAS, in recognition of Indemnitee’s need for (i) substantial protection against personal liability based on
Indemnitee’s reliance on the aforesaid Certificate of Incorporation and Bylaws, (ii) specific contractual assurance that the protection promised by the Certificate of Incorporation and Bylaws will be available to Indemnitee (regardless of,
among other things, any amendment to or revocation of the Certificate of Incorporation and Bylaws or any change in the composition of the Company’s Board of Directors or acquisition transaction relating to the Company) and (iii) an
inducement to provide effective services to the Company as a director and/or officer, the Company wishes to provide in this Agreement for the indemnification of and the advancing of expenses to Indemnitee to the fullest extent (whether partial or
complete) permitted under Delaware law and as set forth in this Agreement, and, to the extent insurance is maintained, to provide for the continued coverage of Indemnitee under the Company’s directors’ and officers’ liability
insurance policies. 
 NOW, THEREFORE, in consideration of the above premises and of Indemnitee continuing to serve the Company directly or,
at its request, with another enterprise, and intending to be legally bound hereby, the parties agree as follows: 
 1. Certain Definitions:

 (a) “Affiliate” shall mean any corporation or other person or entity that directly, or indirectly through one or more
intermediaries, controls or is controlled by or is under common control with, the person specified, including, without limitation, with respect to the Company, any direct or indirect subsidiary of the Company. 

 (b) “Board” shall mean the Board of Directors of the Company. 
 (c) A “Change in Control” shall be deemed to have occurred if (i) any “person” (as such term is used in Sections 13(d)
and 14(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) (other than a trustee or other fiduciary holding securities under an employee benefit plan of the Company or a corporation owned directly or
indirectly by the stockholders of the Company in substantially the same proportions as their ownership of stock of the Company, and other than any person holding shares of the Company on the date that the Company first registers under the Securities
Act of 1933, as amended, or any transferee of such individual if such transferee is a spouse or lineal descendant of the transferee or a trust for the benefit of the individual, his or her spouse or lineal descendants), is or becomes the
“beneficial owner” (as defined in Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing 50% or more of the total voting power represented by the Company’s then outstanding Voting
Securities, (ii) during any period of two consecutive years, individuals who at the beginning of such period constitute the Board and any new director whose election by the Board or nomination for election by the Company’s stockholders was
approved by a vote of at least two-thirds (2/3) of the directors then still in office who either were directors at the beginning of the period or whose election or nomination for election was previously so approved, cease for any reason to
constitute a majority of the Board, (iii) the stockholders of the Company approve a merger or consolidation of the Company with any other entity, other than a merger or consolidation that would result in the Voting Securities of the Company
outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into Voting Securities of the surviving entity) at least 80% of the total voting power represented by the Voting Securities of the
Company or such surviving entity outstanding immediately after such merger or consolidation or (iv) the stockholders of the Company approve a plan of complete liquidation of the Company or an agreement for the sale or disposition by the Company
(in one transaction or a series of transactions) of all or substantially all of the Company’s assets. 
 (d)
“Expenses” shall mean any expense, liability or loss, including attorneys’ fees, judgments, fines, ERISA excise taxes and penalties, amounts paid or to be paid in settlement, any interest, assessments or other charges imposed
thereon, any federal, state, local or foreign taxes imposed as a result of the actual or deemed receipt of any payments under this Agreement and all other costs and obligations, paid or incurred in connection with investigating, defending, being a
witness in, participating in (including on appeal) or preparing for any of the foregoing in, any Proceeding relating to any Indemnifiable Event. 
 (e) “Indemnifiable Event” shall mean any event or occurrence that takes place either prior to or after the execution of this Agreement, related to the fact that Indemnitee is or was a director or officer of the Company or
an Affiliate of the Company, or while a director or officer is or was serving at the request of the Company or an Affiliate of the Company as a director, officer, employee, trustee, agent or fiduciary of another foreign or domestic corporation,
partnership, joint venture, employee benefit plan, trust or other enterprise or was a director, officer, employee or agent of a foreign or domestic corporation that was a predecessor corporation of the Company or of 
  

 -2- 

 another enterprise at the request of such predecessor corporation, or related to anything done or not done by Indemnitee
in any such capacity, whether or not the basis of the Proceeding is alleged action in an official capacity as a director, officer, employee or agent or in any other capacity while serving as a director, officer, employee or agent of the Company or
an Affiliate of the Company, as described above. 
 (f) “Independent Counsel” shall mean the person or body appointed in
connection with Section 3. 
 (g) “Proceeding” shall mean any threatened, pending or completed action, suit or
proceeding or any alternative dispute resolution mechanism (including an action by or in the right of the Company or an Affiliate of the Company) or any inquiry, hearing or investigation, whether conducted by the Company or an Affiliate of the
Company or any other party, that Indemnitee in good faith believes might lead to the institution of any such action, suit or proceeding, whether civil, criminal, administrative, investigative or other. 
 (h) “Reviewing Party” shall mean the person or body appointed in accordance with Section 3. 
 (i) “Voting Securities” shall mean any securities of the Company that vote generally in the election of directors. 
 2. Agreement to Indemnify. 
 (a)
General Agreement. In the event Indemnitee was, is or becomes a party to or witness or other participant in, or is threatened to be made a party to or witness or other participant in, a Proceeding by reason of (or arising in part out of) an
Indemnifiable Event, the Company shall indemnify Indemnitee from and against any and all Expenses to the fullest extent permitted by law, as the same exists or may hereafter be amended or interpreted (but in the case of any such amendment or
interpretation, only to the extent that such amendment or interpretation permits the Company to provide broader indemnification rights than were permitted prior thereto). The parties hereto intend that this Agreement shall provide for
indemnification in excess of that expressly permitted by statute, including, without limitation, any indemnification provided by the Company’s Certificate of Incorporation, its Bylaws, vote of its stockholders or disinterested directors or
applicable law. 
 (b) Initiation of Proceeding. Notwithstanding anything in this Agreement to the contrary, Indemnitee shall not be
entitled to indemnification pursuant to this Agreement in connection with any Proceeding initiated by Indemnitee against the Company or any director or officer of the Company unless (i) the Company has joined in or the Board has consented to
the initiation of such Proceeding, (ii) the Proceeding is one to enforce indemnification rights under Section 5 or (iii) the Proceeding is instituted after a Change in Control (other than a Change in Control approved by a majority of
the directors on the Board who were directors immediately prior to such Change in Control) and Independent Counsel has approved its initiation. 
  

 -3- 

 (c) Expense Advances. If so requested by Indemnitee, the Company shall advance (within thirty
(30) days of such request) any and all Expenses to Indemnitee (an “Expense Advance”). The Indemnitee shall qualify for such Expense Advances upon the execution and delivery to the Company of this Agreement which shall constitute an
undertaking providing that the Indemnitee undertakes to repay such Expense Advances if and to the extent that it is ultimately determined by a court of competent jurisdiction in a final judgment, not subject to appeal, that Indemnitee is not
entitled to be indemnified by the Company. Indemnitee’s obligation to reimburse the Company for Expense Advances shall be unsecured and no interest shall be charged thereon. This Section 2(c) shall not apply to any claim made by Indemnitee
for which indemnity is excluded pursuant to Section 2(b) or 2(f). 
 (d) Mandatory Indemnification. Notwithstanding any other
provision of this Agreement, to the extent that Indemnitee has been successful on the merits or otherwise in defense of any Proceeding relating in whole or in part to an Indemnifiable Event or in defense of any issue or matter therein, Indemnitee
shall be indemnified against all Expenses incurred in connection therewith. 
 (e) Partial Indemnification. If Indemnitee is entitled
under any provision of this Agreement to indemnification by the Company for some or a portion of Expenses, but not, however, for the total amount thereof, the Company shall nevertheless indemnify Indemnitee for the portion thereof to which
Indemnitee is entitled. 
 (f) Prohibited Indemnification. No indemnification pursuant to this Agreement shall be paid by the Company
on account of any Proceeding in which a final judgment is rendered against Indemnitee or Indemnitee enters into a settlement, in each case (i) for an accounting of profits made from the purchase or sale by Indemnitee of securities of the
Company pursuant to the provisions of Section 16(b) of the Exchange Act or similar provisions of any federal, state or local laws; (ii) for which payment has actually been made to or on behalf of Indemnitee under any insurance policy or
other indemnity provision, except with respect to any excess beyond the amount paid under any insurance policy or other indemnity provision; or (iii) for which payment is prohibited by law. Notwithstanding anything to the contrary stated or
implied in this Section 2(f), indemnification pursuant to this Agreement relating to any Proceeding against Indemnitee for an accounting of profits made from the purchase or sale by Indemnitee of securities of the Company pursuant to the
provisions of Section 16(b) of the Exchange Act or similar provisions of any federal, state or local laws shall not be prohibited if Indemnitee ultimately establishes in any Proceeding that no recovery of such profits from Indemnitee is
permitted under Section 16(b) of the Exchange Act or similar provisions of any federal, state or local laws. 
 3. Reviewing
Party. Prior to any Change in Control, the Reviewing Party shall be any appropriate person or body consisting of a member or members of the Board or any other person or body appointed by the Board who is not a party to the particular Proceeding
with respect to which Indemnitee is seeking indemnification; provided that if all members of the Board are parties to the particular Proceeding with respect to which Indemnitee is seeking indemnification, the Independent Counsel referred to below
shall become the Reviewing Party; after a Change in Control, the Independent Counsel referred to below shall become the Reviewing Party. With respect to all matters arising before a Change in Control for which Independent Counsel shall be the
Reviewing 
  

 -4- 

 Party and all matters arising after a Change in Control, in each case concerning the rights of Indemnitee to indemnity
payments and Expense Advances under this Agreement or any other agreement or under applicable law or the Company’s Certificate of Incorporation or Bylaws now or hereafter in effect relating to indemnification for Indemnifiable Events, the
Company shall seek legal advice only from Independent Counsel selected by Indemnitee and approved by the Company (which approval shall not be unreasonably withheld or delayed), and who has not otherwise performed services for the Company or the
Indemnitee (other than in connection with indemnification matters) within the last five years. The Independent Counsel shall not include any person who, under the applicable standards of professional conduct then prevailing, would have a conflict of
interest in representing either the Company or Indemnitee in an action to determine Indemnitee’s rights under this Agreement. Such counsel, among other things, shall render its written opinion to the Company and Indemnitee as to whether and to
what extent the Indemnitee should be permitted to be indemnified under applicable law. The Company agrees to pay the reasonable fees of the Independent Counsel and to indemnify fully such counsel against any and all expenses (including
attorneys’ fees), claims, liabilities, loss and damages arising out of or relating to this Agreement or the engagement of Independent Counsel pursuant hereto. 
 4. Indemnification Process and Appeal. 
 (a) Indemnification Payment. Indemnitee shall be
entitled to indemnification of Expenses, and shall receive payment thereof, from the Company in accordance with this Agreement as soon as practicable after Indemnitee has made written demand on the Company for indemnification, but in no event later
than thirty (30) business days after such demand, unless the Reviewing Party has given a written opinion to the Company that Indemnitee is not entitled to indemnification under applicable law. Indemnitee shall cooperate with the Reviewing Party
making a determination with respect to Indemnitee’s entitlement to indemnification, including providing to the Reviewing Party upon reasonable advance request any documentation or information which is not privileged or otherwise protected from
disclosure and which is reasonably available to Indemnitee and reasonably necessary to such determination. 
 (b) Suit to Enforce
Rights. Regardless of any action by the Reviewing Party, if Indemnitee has not received full indemnification within thirty (30) days after making a demand in accordance with Section 4(a), Indemnitee shall have the right to enforce its
indemnification rights under this Agreement by commencing litigation in any court in the State of California or the State of Delaware having subject matter jurisdiction thereof seeking an initial determination by the court or challenging any
determination by the Reviewing Party or any aspect thereof. The Company hereby consents to service of process and to appear in any such proceeding. Any determination by the Reviewing Party not challenged by the Indemnitee shall be binding on the
Company and Indemnitee. The Company shall be precluded from asserting in any such proceeding that the procedures and presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court that the Company is
bound by all the provisions of this Agreement. The remedy provided for in this Section 4 shall be in addition to any other remedies available to Indemnitee at law or in equity. 
 (c) Defense to Indemnification, Burden of Proof, and Presumptions. It shall be a defense to any action brought by Indemnitee against the Company
to enforce this 
  

 -5- 

 Agreement (other than an action brought to enforce a claim for Expenses incurred in defending a Proceeding in advance of
its final disposition) that it is not permissible under applicable law for the Company to indemnify Indemnitee for the amount claimed. In connection with any such action or any determination by the Reviewing Party or otherwise as to whether
Indemnitee is entitled to be indemnified hereunder, the burden of proving such a defense or determination shall be on the Company. Neither the failure of the Reviewing Party or the Company (including its Board, independent legal counsel or its
stockholders) to have made a determination prior to the commencement of such action by Indemnitee that indemnification of the claimant is proper under the circumstances because Indemnitee has met the standard of conduct set forth in applicable law,
nor an actual determination by the Reviewing Party or Company (including its Board, independent legal counsel or its stockholders) that the Indemnitee had not met such applicable standard of conduct, shall be a defense to the action or create a
presumption that the Indemnitee has not met the applicable standard of conduct. For purposes of this Agreement, the termination of any claim, action, suit or proceeding, by judgment, order, settlement (whether with or without court approval),
conviction or upon a plea of nolo contendere or its equivalent, shall not create a presumption that Indemnitee did not meet any particular standard of conduct or have any particular belief or that a court has determined that indemnification
is not permitted by applicable law. For purposes of any determination of good faith under any applicable standard of conduct, Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of
account of the Company, including financial statements, or on information supplied to Indemnitee by the officers of the Company in the course of their duties, or on the advice of legal counsel for the Company or the Board or counsel selected by any
committee of the Board or on information or records given or reports made to the Company by an independent certified public accountant or by an appraiser, investment banker or other expert selected with reasonable care by the Company or the Board or
any committee of the Board. The provisions of the preceding sentence shall not be deemed to be exclusive or to limit in any way the other circumstances in which the Indemnitee may be deemed to have met the applicable standard of conduct. The
knowledge and/or actions, or failure to act, or any director, officer, agent or employee of the Company shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement. 
 5. Indemnification for Expenses Incurred in Enforcing Rights. The Company shall indemnify Indemnitee against any and all Expenses that are
incurred by Indemnitee in connection with any action brought by Indemnitee for: 
 (i) indemnification or advance payment of Expenses by the
Company under this Agreement or any other agreement or under applicable law or the Company’s Certificate of Incorporation or Bylaws now or hereafter in effect relating to indemnification for Indemnifiable Events, and/or; 
 (ii) recovery under directors’ and officers’ liability insurance policies maintained by the Company; but only in the event that Indemnitee
ultimately is determined to be entitled to such indemnification or insurance recovery, as the case may be. In addition, the Company shall, if so requested by Indemnitee, advance the foregoing Expenses to Indemnitee, subject to and in accordance with
Section 2(c). 
  

 -6- 

 6. Notification and Defense of Proceeding. 
 (a) Notice. Promptly after receipt by Indemnitee of notice of the commencement of any Proceeding, Indemnitee shall, if a claim in respect thereof
is to be made against the Company under this Agreement, notify the Company of the commencement thereof; but the omission so to notify the Company will not relieve the Company from any liability that it may have to Indemnitee, except as provided in
Section 6(c). 
 (b) Defense. With respect to any Proceeding as to which Indemnitee notifies the Company of the commencement
thereof, the Company will be entitled to participate in the Proceeding at its own expense and except as otherwise provided below, to the extent the Company so wishes, it may assume the defense thereof with counsel reasonably satisfactory to
Indemnitee. After notice from the Company to Indemnitee of its election to assume the defense of any Proceeding, the Company shall not be liable to Indemnitee under this Agreement or otherwise for any Expenses subsequently incurred by Indemnitee in
connection with the defense of such Proceeding other than reasonable costs of investigation or as otherwise provided below. Indemnitee shall have the right to employ legal counsel in such Proceeding, but all Expenses related thereto incurred after
notice from the Company of its assumption of the defense shall be at Indemnitee’s expense unless: (i) the employment of legal counsel by Indemnitee has been authorized by the Company, (ii) Indemnitee has reasonably determined that
there may be a conflict of interest between Indemnitee and the Company in the defense of the Proceeding, (iii) after a Change in Control, the employment of counsel by Indemnitee has been approved by the Independent Counsel or (iv) the
Company shall not in fact have employed counsel to assume the defense of such Proceeding, in each of which cases all Expenses of the Proceeding shall be borne by the Company. The Company shall not be entitled to assume the defense of any Proceeding
brought by or on behalf of the Company, or as to which Indemnitee shall have made the determination provided for in (ii) above or under the circumstances provided for in (iii) and (iv) above. 
 (c) Settlement of Claims. The Company shall not be liable to indemnify Indemnitee under this Agreement or otherwise for any amounts paid in
settlement of any Proceeding effected without the Company’s written consent, such consent not to be unreasonably withheld; provided, however, that if a Change in Control has occurred, the Company shall be liable for indemnification of
Indemnitee for amounts paid in settlement if the Independent Counsel has approved the settlement. The Company shall not settle any Proceeding in any manner that would impose any penalty or limitation on Indemnitee without Indemnitee’s written
consent. The Company shall not be liable to indemnify the Indemnitee under this Agreement with regard to any judicial award if the Company was not given a reasonable and timely opportunity as a result of Indemnitees’ failure to provide notice,
at its expense, to participate in the defense of such action, and the lack of such notice materially prejudiced the Company’s ability to participate in defense of such action. The Company’s liability hereunder shall not be excused if
participation in the Proceeding by the Company was barred by this Agreement. 
 7. Non-Exclusivity. The rights of Indemnitee hereunder
shall be in addition to any other rights Indemnitee may have under the Company’s Certificate of Incorporation, Bylaws, applicable law or otherwise; provided, however, that this Agreement shall supersede any prior 
  

 -7- 

 indemnification agreement between the Company and the Indemnitee. To the extent that a change in applicable law (whether
by statute or judicial decision) permits greater indemnification than would be afforded currently under the Company’s Certificate of Incorporation, Bylaws, applicable law or this Agreement, it is the intent of the parties that Indemnitee enjoy
by this Agreement the greater benefits so afforded by such change. 
 8. Liability Insurance. To the extent the Company maintains an
insurance policy or policies providing general and/or directors’ and officers’ liability insurance, Indemnitee shall be covered by such policy or policies, in accordance with its or their terms, to the maximum extent of the coverage
available for any Company director or officer. 
 9. Period of Limitations. No legal action shall be brought and no cause of action
shall be asserted by or on behalf of the Company or any Affiliate of the Company against Indemnitee, Indemnitee’s spouse, heirs, executors or personal or legal representatives after the expiration of two (2) years from the date of accrual
of such cause of action or such longer period as may be required by state law under the circumstances. Any claim or cause of action of the Company or its Affiliate shall be extinguished and deemed released unless asserted by the timely filing and
notice of a legal action within such period; provided, however, that if any shorter period of limitations is otherwise applicable to any such cause of action, the shorter period shall govern. 
 10. Amendment of this Agreement. No supplement, modification or amendment of this Agreement shall be binding unless executed in writing by both of
the parties hereto. No waiver of any of the provisions of this Agreement shall be binding unless in the form of a writing signed by the party against whom enforcement of the waiver is sought, and no such waiver shall operate as a waiver of any other
provisions hereof (whether or not similar), nor shall such waiver constitute a continuing waiver. Except as specifically provided herein, no failure to exercise or any delay in exercising any right or remedy hereunder shall constitute a waiver
thereof. 
 11. Subrogation. In the event of payment under this Agreement, the Company shall be subrogated to the extent of such
payment to all of the rights of recovery of Indemnitee, who shall execute all papers required and shall do everything that may be necessary to secure such rights, including the execution of such documents necessary to enable the Company effectively
to bring suit to enforce such rights. 
 12. No Duplication of Payments. The Company shall not be liable under this Agreement to make
any payment in connection with any claim made against Indemnitee to the extent Indemnitee has otherwise received payment (under any insurance policy, Bylaw or otherwise) of the amounts otherwise indemnifiable hereunder. 
 13. Duration of Agreement. This Agreement shall continue until and terminate upon the later of (a) six (6) years after the date that
Indemnitee shall have ceased to serve as a director or officer of the Company or (b) one (1) year after the final termination of any Proceeding, including any appeal, then pending in respect of which Indemnitee is granted rights of
indemnification or advancement of Expenses hereunder and of any proceeding commenced by Indemnitee pursuant to Section 4(b) of this Agreement relating thereto. 
  

 -8- 

 14. Binding Effect. This Agreement shall be binding upon and inure to the benefit of and be
enforceable by the parties hereto and their respective successors (including any direct or indirect successor by purchase, merger, consolidation or otherwise to all or substantially all of the business and/or assets of the Company), assigns,
spouses, heirs and personal and legal representatives. The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all, substantially all or a substantial part, of the business
and/or assets of the Company, by written agreement in form and substance satisfactory to Indemnitee, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if
no such succession had taken place. The indemnification provided under this Agreement shall continue as to Indemnitee for any action taken or not taken while serving in an indemnified capacity pertaining to an Indemnifiable Event even though
Indemnitee may have ceased to serve in such capacity at the time of any Proceeding. 
 15. Severability. If any provision (or portion
thereof) of this Agreement shall be held by a court of competent jurisdiction to be invalid, void or otherwise unenforceable, (a) the remaining provisions shall remain enforceable to the fullest extent permitted by law; (b) such provision
or provisions shall be deemed reformed to the extent necessary to conform to applicable law and to give the maximum effect to the intent of the parties hereto; and (c) to the fullest extent possible, the provisions of this Agreement (including,
without limitation, each portion of this Agreement containing any provision held to be invalid, void or otherwise unenforceable, that is not itself invalid, void or unenforceable) shall be construed so as to give effect to the intent manifested by
the provision held invalid, void or unenforceable. 
 16. Contribution. To the fullest extent permissible under applicable law,
whether or not the indemnification provided for in this Agreement is available to Indemnitee for any reason whatsoever, the Company shall pay all or a portion of the amount that would otherwise be incurred by Indemnitee for Expenses in connection
with any claim relating to an Indemnifiable Event, as is deemed fair and reasonable in light of all of the circumstances of such Proceeding in order to reflect (i) the relative benefits received by the Company and Indemnitee as a result of the
event(s) and/or transaction(s) giving cause to such Proceeding; and/or (ii) the relative fault of the Company (and its directors, officers, employees and agents) and Indemnitee in connection with such event(s) and/or transaction(s). 

17. Governing Law. This Agreement shall be governed by and construed and enforced in accordance with the laws of the State of Delaware
applicable to contracts made and to be performed in such State without giving effect to its principles of conflicts of laws. The Company and Indemnitee hereby irrevocably and unconditionally (i) agree that any action or proceeding arising out
of or in connection with this Agreement may be brought in the Delaware Court of Chancery or in the applicable state or federal courts in the State of California; (ii) consent to submit to the jurisdiction of the Delaware Court of Chancery or of
the applicable state or federal courts in the State of California for purposes of any action or proceeding arising out of or in connection with this Agreement, (iii) waive any objection to the laying of venue of any such action or proceeding in
the Delaware Court of Chancery or in the applicable state or federal courts in the State of California, and (iv) waive, and agree not to plead or to make, any claim that any such action or proceeding brought in the Delaware Court of Chancery or
in the applicable state or federal courts in the State of California has been brought in an improper or inconvenient forum. 
  

 -9- 

 18. Notices. All notices, demands and other communications required or permitted hereunder shall
be made in writing and shall be deemed to have been duly given if delivered by hand, against receipt or mailed, postage prepaid, certified or registered mail, return receipt requested and addressed to the Company at: 
 BigBand Networks, Inc. 
 475 Broadway

 Redwood City, CA 94063 
 Attention: Chief Executive Officer / General Counsel 
 and to Indemnitee at: 
 [        ] 
 [        ] 
 the address set forth below Indemnitee’s signature hereto. Notice of change of address
shall be effective only when given in accordance with this Section. All notices complying with this Section shall be deemed to have been received on the date of hand delivery or on the third business day after mailing. 
 19. Counterparts. This Agreement may be executed in one or more counterparts, each of which shall be deemed an original, but all of which together
shall constitute one and the same instrument. 
 * * * * * 
  

 -10- 

 IN WITNESS WHEREOF, the parties hereto have duly executed and delivered this Agreement as of the day
specified above. 
  

			
	BIGBAND NETWORKS, INC.
	a Delaware corporation
		
	By:	 	  

	Print Name:	 	  

	Title:	 	  

	
	 INDEMNITEE,
 an
individual

	
	  
 Indemnitee

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