Document:

Form of Registration Rights Agreement

 Exhibit 4.2 
 REGISTRATION RIGHTS AGREEMENT 
 This
Registration Rights Agreement (the “Agreement”) is made and entered into as of this 21st day of March, 2011, by and among Overland Storage, Inc., a California corporation (the “Company”), the “Investors” named in that certain Purchase Agreement, dated as of March 16,
2011, by and among the Company and the Investors (the “Purchase Agreement”), and Roth Capital Partners, LLC (the “Placement Agent”). Capitalized terms used herein have the respective meanings ascribed thereto in the
Purchase Agreement unless otherwise defined herein. 
 The parties hereby agree as follows: 

1. Certain Definitions. 
 As used in this Agreement, the following terms shall have the following meanings: 

“Common Stock” means the Company’s common stock, no par value, and any securities into which such shares may
hereinafter be reclassified. 
 “Investors” means the Investors identified in the Purchase Agreement, the
Placement Agent and any Affiliate or permitted transferee of any Investor or the Placement Agent who is a subsequent holder of any Warrants or Registrable Securities. 
 “Prospectus” means (i) the prospectus included in any Registration Statement, as amended or supplemented by any prospectus supplement, with respect to the terms of the offering of
any portion of the Registrable Securities covered by such Registration Statement and by all other amendments and supplements to the prospectus, including post-effective amendments and all material incorporated by reference in such prospectus, and
(ii) any “free writing prospectus” as defined in Rule 405 under the 1933 Act. 
 “Register,”
“registered” and “registration” refer to a registration made by preparing and filing a Registration Statement or similar document in compliance with the 1933 Act (as defined below), and the declaration or ordering
of effectiveness of such Registration Statement or document. 
 “Registrable Securities” means (i) the
shares of Common Stock purchased by the Investors pursuant to the Purchase Agreement, (ii) the Warrant Shares and (iii) any other securities issued or issuable with respect to or in exchange for Registrable Securities, whether by merger,
charter amendment or otherwise; provided, that a security shall cease to be a Registrable Security upon (a) sale pursuant to a Registration Statement or Rule 144 under the 1933 Act, or (b) such security becoming eligible for sale
without restriction by the holder thereof pursuant to Rule 144. 
 “Registration Statement” means any
registration statement of the Company filed under the 1933 Act that covers the resale of any of the Registrable Securities pursuant to the provisions of this Agreement, amendments and supplements to such Registration Statement, including
post-effective amendments, all exhibits and all material incorporated by reference in such Registration Statement. 

“Required Investors” means the Investors holding a majority of the Registrable Securities. 

“SEC” means the U.S. Securities and Exchange Commission. 

 “1933 Act” means the Securities Act of 1933, as amended, and the rules and
regulations promulgated thereunder. 
 “1934 Act” means the Securities Exchange Act of 1934, as amended, and
the rules and regulations promulgated thereunder. 
 2. Registration. 

(a) Registration Statements. 
 (i) Promptly following the closing of the purchase and sale of the securities contemplated by the Purchase Agreement (the “Closing Date”) but no later than thirty (30) days after the
Closing Date (the “Filing Deadline”), the Company shall prepare and file with the SEC one Registration Statement on Form S-3 (or, if Form S-3 is not then available to the Company, on such form of registration statement as is then
available to effect a registration for resale of the Registrable Securities), covering the resale of the Registrable Securities. Subject to any SEC comments, such Registration Statement shall include the plan of distribution attached hereto as
Exhibit A; provided, however, that no Investor (other than the Placement Agent or any Affiliate or transferee of the Placement Agent) shall be named as an “underwriter” in the Registration Statement without the
Investor’s prior written consent. Such Registration Statement also shall cover, to the extent allowable under the 1933 Act and the rules promulgated thereunder (including Rule 416), such indeterminate number of additional shares of Common Stock
resulting from stock splits, stock dividends or similar transactions with respect to the Registrable Securities. Such Registration Statement shall not include any shares of Common Stock or other securities for the account of any other holder without
the prior written consent of the Required Investors. The Registration Statement (and each amendment or supplement thereto, and each request for acceleration of effectiveness thereof) shall be provided in accordance with Section 3(c) to
the Investors and their counsel prior to its filing or other submission. If a Registration Statement covering the Registrable Securities is not filed with the SEC on or prior to the Filing Deadline, the Company will make pro rata payments to each
Investor, as liquidated damages and not as a penalty, in an amount equal to 2.0% of the aggregate amount invested by such Investor for each 30-day period or pro rata for any portion thereof following the Filing Deadline for which no Registration
Statement is filed with respect to the Registrable Securities. Such payments shall constitute the Investors’ exclusive monetary remedy for such events, but shall not affect the right of the Investors to seek injunctive relief. Such payments
shall be made to each Investor in cash no later than three (3) Business Days after the end of each such 30-day period. 

(ii) Additional Registrable Securities. Upon the written demand of any Investor and upon any change in the Warrant Price (as
defined in the Warrant) such that additional shares of Common Stock become issuable upon exercise of the Warrants (the “Additional Shares”), the Company shall prepare and file with the SEC one or more Registration Statements on Form
S-3 or amend the Registration Statement filed pursuant to clause (i) above, if such Registration Statement has not previously been declared effective (or, if Form S-3 is not then available to the Company, on such form of registration statement
as is then available to effect a registration for resale of the Additional Shares) covering the resale of the Additional Shares, but only to the extent the Additional Shares are not at the time covered by an effective Registration Statement. Subject
to any SEC comments, such Registration Statement shall include the plan of distribution attached hereto as Exhibit A; provided, however, that no Investor 

  
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(other than the Placement Agent or any Affiliate or transferee of the Placement Agent) shall be named as an “underwriter” in the Registration Statement without the Investor’s prior
written consent. Such Registration Statement also shall cover, to the extent allowable under the 1933 Act and the rules promulgated thereunder (including Rule 416), such indeterminate number of additional shares of Common Stock resulting from stock
splits, stock dividends or similar transactions with respect to the Additional Shares. Such Registration Statement shall not include any shares of Common Stock or other securities for the account of any other holder without the prior written consent
of the Required Investors. The Registration Statement (and each amendment or supplement thereto, and each request for acceleration of effectiveness thereof) shall be provided in accordance with Section 3(c) to the Investors and their
counsel prior to its filing or other submission. If a Registration Statement covering the Additional Shares is required to be filed under this Section 2(a)(ii) and is not filed with the SEC within ten (10) Business Days of the
request of any Investor or upon the occurrence of any of the events specified in this Section 2(a)(ii) (the “Additional Shares Filing Deadline”), the Company will make pro rata payments to each Investor, as liquidated
damages and not as a penalty, in an amount equal to 2.0% of the aggregate amount invested by such Investor for each 30-day period or pro rata for any portion thereof following the Additional Shares Filing Deadline for which no Registration Statement
is filed with respect to the Additional Shares. Such payments shall constitute the Investors’ exclusive monetary remedy for such events, but shall not affect the right of the Investors to seek injunctive relief. Such payments shall be made to
each Investor in cash no later than three (3) Business Days after the end of each such 30-day period. 
 (b)
Expenses. The Company will pay all expenses associated with each registration, including filing and printing fees, the Company’s counsel and accounting fees and expenses, costs associated with clearing the Registrable Securities for sale
under applicable state securities laws, listing fees, fees and expenses of one counsel to the Investors and the Investors’ reasonable expenses in connection with the registration, but excluding discounts, commissions, fees of underwriters,
selling brokers, dealer managers or similar securities industry professionals with respect to the Registrable Securities being sold. 
 (c) Effectiveness. 
 (i) The Company shall use
commercially reasonable efforts to have the Registration Statement declared effective as soon as practicable. The Company shall notify the Investors by facsimile or e-mail as promptly as practicable, and in any event, within twenty-four
(24) hours, after any Registration Statement is declared effective and shall simultaneously provide the Investors with copies of any related Prospectus to be used in connection with the sale or other disposition of the securities covered
thereby. If (A)(x) a Registration Statement covering the Registrable Securities is not declared effective by the SEC prior to the earlier of (i) five (5) Business Days after the SEC shall have informed the Company that no review of the
Registration Statement will be made or that the SEC has no further comments on the Registration Statement or (ii) the one hundred twentieth (120th) day after the Closing Date or (y) a Registration Statement covering Additional Shares is not declared
effective by the SEC prior to the earlier of (i) five (5) Business Days after the SEC shall have informed the Company that no review of the Registration Statement will be made or that the SEC has no further comments on the Registration
Statement or (ii) the one hundred twentieth
(120th) day after the Additional Shares Filing
Deadline, or (B) after a Registration Statement has been declared effective by the 

  
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SEC, sales cannot be made pursuant to such Registration Statement for any reason (including, without limitation, by reason of a stop order, or the Company’s failure to update the
Registration Statement), but excluding any Allowed Delay (as defined below) or the inability of any Investor to sell the Registrable Securities covered thereby due to market conditions, then the Company will make pro rata payments to each Investor,
as liquidated damages and not as a penalty, in an amount equal to 2.0% of the aggregate amount invested by such Investor for each 30-day period or pro rata for any portion thereof following the date by which such Registration Statement should have
been effective (the “Blackout Period”). Such payments shall constitute the Investors’ exclusive monetary remedy for such events, but shall not affect the right of the Investors to seek injunctive relief. The amounts payable as
liquidated damages pursuant to this paragraph shall be paid monthly within three (3) Business Days of the last day of each month following the commencement of the Blackout Period until the termination of the Blackout Period. Such payments shall
be made to each Investor in cash. 
 (ii) For not more than twenty (20) consecutive days or for a total of not more than
forty-five (45) days in any twelve (12) month period, the Company may suspend the use of any Prospectus included in any Registration Statement contemplated by this Section in the event that the Company determines in good faith that such
suspension is necessary to (A) delay the disclosure of material non-public information concerning the Company, the disclosure of which at the time is not, in the good faith opinion of the Company, in the best interests of the Company or
(B) amend or supplement the affected Registration Statement or the related Prospectus so that such Registration Statement or Prospectus shall not include an untrue statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in the case of the Prospectus in light of the circumstances under which they were made, not misleading (an “Allowed Delay”); provided, that the Company shall
promptly (a) notify each Investor in writing of the commencement of and the reasons for an Allowed Delay, but shall not (without the prior written consent of an Investor) disclose to such Investor any material non-public information giving rise
to an Allowed Delay, (b) advise the Investors in writing to cease all sales under the Registration Statement until the end of the Allowed Delay and (c) use commercially reasonable efforts to terminate the Allowed Delay as promptly as
practicable. 
 (d) Rule 415; Cutback If at any time the SEC takes the position that the offering of some or all of the
Registrable Securities in a Registration Statement is not eligible to be made on a delayed or continuous basis under the provisions of Rule 415 under the 1933 Act or requires any Investor (other than the Placement Agent or any Affiliate or
transferee of the Placement Agent) to be named as an “underwriter”, the Company shall use its commercially reasonable efforts to persuade the SEC that the offering contemplated by the Registration Statement is a valid secondary offering
and not an offering “by or on behalf of the issuer” as defined in Rule 415 and that none of the Investors (other than the Placement Agent or any Affiliate or transferee of the Placement Agent) is an “underwriter”. The Investors
shall have the right to have their counsel participate in any meetings or discussions with the SEC regarding the SEC’s position and to comment or have their counsel comment on any written submission made to the SEC with respect thereto. No such
written submission shall be made to the SEC to which the Investors’ counsel reasonably objects. In the event that, despite the Company’s commercially reasonable best efforts and compliance with the terms of this Section 2(d),
the SEC refuses to alter its position, the Company shall (i) remove from the Registration Statement 

  
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such portion of the Registrable Securities (the “Cut Back Shares”) and/or (ii) agree to such restrictions and limitations on the registration and resale of the Registrable
Securities as the SEC may require to assure the Company’s compliance with the requirements of Rule 415 (collectively, the “SEC Restrictions”); provided, however, that the Company shall not agree to name any
Investor (other than the Placement Agent or any Affiliate or transferee of the Placement Agent) as an “underwriter” in such Registration Statement without the prior written consent of such Investor (and that the Company shall not be
required to do so even if such Investor consents to be named as an underwriter). Any cut-back imposed on the Investors pursuant to this Section 2(d) shall be allocated among the Investors on a pro rata basis and shall be applied first to
any Warrant Shares held by the Placement Agent or any Affiliate or transferee of the Placement Agent and second to any Warrant Shares held by the remaining Investors, unless the SEC Restrictions otherwise require or provide or the Investors
otherwise agree. No liquidated damages shall accrue as to any Cut Back Shares until such date as the Company is able to effect the registration of such Cut Back Shares in accordance with any SEC Restrictions (such date, the “Restriction
Termination Date” of such Cut Back Shares), subject to the following sentence. From and after the Restriction Termination Date applicable to any Cut Back Shares, all of the provisions of this Section 2 (including the liquidated
damages provisions) shall again be applicable to such Cut Back Shares; provided, however, that (i) the Filing Deadline and the Additional Shares Filing Deadline, as applicable, for the Registration Statement including such Cut
Back Shares shall be ten (10) Business Days after such Restriction Termination Date, and (ii) the date by which the Company is required to obtain effectiveness with respect to such Cut Back Shares under Section 2(c) shall be
the ninetieth (90th) day immediately after the
Restriction Termination Date. 
 3. Company Obligations. The Company will use commercially reasonable efforts to effect
the registration of the Registrable Securities in accordance with the terms hereof, and pursuant thereto the Company will, as expeditiously as possible: 
 (a) use commercially reasonable efforts to cause such Registration Statement to become effective and to remain continuously effective for a period that will terminate upon the earlier of (i) the date
on which all Registrable Securities covered by such Registration Statement as amended from time to time, have been sold, and (ii) the date on which all Registrable Securities covered by such Registration Statement may be sold without
restriction pursuant to Rule 144 (the “Effectiveness Period”) and advise the Investors in writing when the Effectiveness Period has expired; 
 (b) prepare and file with the SEC such amendments and post-effective amendments to the Registration Statement and the Prospectus as may be necessary to keep the Registration Statement effective for the
Effectiveness Period and to comply with the provisions of the 1933 Act and the 1934 Act with respect to the distribution of all of the Registrable Securities covered thereby; 
 (c) provide copies to and permit counsel designated by the Investors to review each Registration Statement and all amendments and supplements thereto no fewer than five (5) days prior to their filing
with the SEC and not file any document to which such counsel reasonably objects; 

  
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 (d) furnish to the Investors and their legal counsel (i) promptly after the same is
prepared and publicly distributed, filed with the SEC, or received by the Company (but not later than two (2) Business Days after the filing date, receipt date or sending date, as the case may be) one (1) copy of any Registration Statement
and any amendment thereto, each preliminary prospectus and Prospectus and each amendment or supplement thereto, and each letter written by or on behalf of the Company to the SEC or the staff of the SEC, and each item of correspondence from the SEC
or the staff of the SEC, in each case relating to such Registration Statement (other than any portion of any thereof which contains information for which the Company has sought confidential treatment), and (ii) such number of copies of a
Prospectus, including a preliminary prospectus, and all amendments and supplements thereto and such other documents as each Investor may reasonably request in order to facilitate the disposition of the Registrable Securities owned by such Investor
that are covered by the related Registration Statement; 
 (e) use commercially reasonable efforts to (i) prevent the
issuance of any stop order or other suspension of effectiveness and, (ii) if such order is issued, obtain the withdrawal of any such order at the earliest possible moment; 

(f) prior to any public offering of Registrable Securities, use commercially reasonable efforts to register or qualify or cooperate with
the Investors and their counsel in connection with the registration or qualification of such Registrable Securities for offer and sale under the securities or blue sky laws of such jurisdictions requested by the Investors and do any and all other
commercially reasonable acts or things necessary or advisable to enable the distribution in such jurisdictions of the Registrable Securities covered by the Registration Statement; provided, however, that the Company shall not be required in
connection therewith or as a condition thereto to (i) qualify to do business in any jurisdiction where it would not otherwise be required to qualify but for this Section 3(f), (ii) subject itself to general taxation in any
jurisdiction where it would not otherwise be so subject but for this Section 3(f), or (iii) file a general consent to service of process in any such jurisdiction; 

(g) use commercially reasonable efforts to cause all Registrable Securities covered by a Registration Statement to be listed on each
securities exchange, interdealer quotation system or other market on which similar securities issued by the Company are then listed; 
 (h) immediately notify the Investors, at any time prior to the end of the Effectiveness Period, upon discovery that, or upon the happening of any event as a result of which, the Prospectus includes an
untrue statement of a material fact or omits to state any material fact required to be stated therein or necessary to make the statements therein not misleading in light of the circumstances then existing, and promptly prepare, file with the SEC and
furnish to such holder a supplement to or an amendment of such Prospectus as may be necessary so that such Prospectus shall not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or
necessary to make the statements therein not misleading in light of the circumstances then existing; and 
 (i) otherwise use
commercially reasonable efforts to comply with all applicable rules and regulations of the SEC under the 1933 Act and the 1934 Act, including, 

  
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without limitation, Rule 172 under the 1933 Act, file any final Prospectus, including any supplement or amendment thereof, with the SEC pursuant to Rule 424 under the 1933 Act, promptly inform
the Investors in writing if, at any time during the Effectiveness Period, the Company does not satisfy the conditions specified in Rule 172 and, as a result thereof, the Investors are required to deliver a Prospectus in connection with any
disposition of Registrable Securities and take such other actions as may be reasonably necessary to facilitate the registration of the Registrable Securities hereunder; and make available to its security holders, as soon as reasonably practicable,
but not later than the Availability Date (as defined below), an earnings statement covering a period of at least twelve (12) months, beginning after the effective date of each Registration Statement, which earnings statement shall satisfy the
provisions of Section 11(a) of the 1933 Act, including Rule 158 promulgated thereunder (for the purpose of this subsection 3(i), “Availability Date” means the 45th day following the end of the fourth fiscal quarter that
includes the effective date of such Registration Statement, except that, if such fourth fiscal quarter is the last quarter of the Company’s fiscal year, “Availability Date” means the ninetieth (90th) day after the end of such fourth fiscal quarter). 

(j) With a view to making available to the Investors the benefits of Rule 144 (or its successor rule) and any other rule or regulation
of the SEC that may at any time permit the Investors to sell shares of Common Stock to the public without registration, the Company covenants and agrees to: (i) make and keep public information available, as those terms are understood and
defined in Rule 144, until the earlier of (A) six months after such date as all of the Registrable Securities may be sold without restriction by the holders thereof pursuant to Rule 144 or any other rule of similar effect or (B) such date
as all of the Registrable Securities shall have been resold; (ii) file with the SEC in a timely manner all reports and other documents required of the Company under the 1934 Act; and (iii) furnish to each Investor upon request, as long as
such Investor owns any Registrable Securities, (A) a written statement by the Company that it has complied with the reporting requirements of the 1934 Act, (B) a copy of the Company’s most recent Annual Report on Form 10-K or
Quarterly Report on Form 10-Q, and (C) such other information as may be reasonably requested in order to avail such Investor of any rule or regulation of the SEC that permits the selling of any such Registrable Securities without registration.

 4. Due Diligence Review; Information. The Company shall make available, during normal business hours and upon prior
written notice, for inspection and review by the Investors, advisors to and representatives of the Investors (who may or may not be affiliated with the Investors and who are reasonably acceptable to the Company), all financial and other records, all
SEC Filings (as defined in the Purchase Agreement) and other filings with the SEC, and all other corporate documents and properties of the Company as may be reasonably necessary for the purpose of such review, and cause the Company’s officers,
directors and employees, within a reasonable time period, to supply all such information reasonably requested by the Investors or any such representative, advisor or underwriter in connection with such Registration Statement (including, without
limitation, in response to all questions and other inquiries reasonably made or submitted by any of them), prior to and from time to time after the filing and effectiveness of the Registration Statement for the sole purpose of enabling the Investors
and such representatives, advisors and underwriters and their respective accountants and attorneys to conduct initial and ongoing due diligence with respect to the Company and the accuracy of such Registration Statement. 

  
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 Notwithstanding the foregoing, the Company shall not disclose or provide any access to
material nonpublic information to the Investors, or to advisors to or representatives of the Investors, unless prior to disclosure of such information the Company identifies such information as being material nonpublic information and provides the
Investors, such advisors and representatives with the opportunity to accept or refuse to accept such material nonpublic information for review and any Investor wishing to obtain such information enters into an appropriate confidentiality agreement
with the Company with respect thereto. 
 5. Obligations of the Investors. 

(a) Each Investor shall furnish in writing to the Company such information regarding itself, the Registrable Securities held by it and
the intended method of disposition of the Registrable Securities held by it, as shall be reasonably required to effect the registration of such Registrable Securities and shall execute such documents in connection with such registration as the
Company may reasonably request. At least five (5) Business Days prior to the first anticipated filing date of any Registration Statement, the Company shall notify each Investor of the information the Company requires from such Investor if such
Investor elects to have any of the Registrable Securities included in the Registration Statement. An Investor shall provide such information to the Company at least two (2) Business Days prior to the first anticipated filing date of such
Registration Statement if such Investor elects to have any of the Registrable Securities included in the Registration Statement. 
 (b) Each Investor, by its acceptance of the Registrable Securities agrees to cooperate with the Company as reasonably requested by the Company in connection with the preparation and filing of a
Registration Statement hereunder, unless such Investor has notified the Company in writing of its election to exclude all of its Registrable Securities from such Registration Statement. 

(c) Each Investor agrees that, upon receipt of any notice from the Company of either (i) the commencement of an Allowed Delay
pursuant to Section 2(c)(ii) or (ii) the happening of an event pursuant to Section 3(h) hereof, such Investor will immediately discontinue disposition of Registrable Securities pursuant to the Registration Statement
covering such Registrable Securities, until the Investor is advised by the Company that such dispositions may again be made. 

6. Indemnification. 
 (a) Indemnification by the Company. The Company will indemnify and hold harmless each Investor and its officers, directors, members, employees and agents, successors and assigns, and each other
person, if any, who controls such Investor within the meaning of the 1933 Act, against any losses, claims, damages or liabilities, joint or several, to which they may become subject under the 1933 Act or otherwise, insofar as such losses, claims,
damages or liabilities (or actions in respect thereof) arise out of or are based upon: (i) any untrue statement or alleged untrue statement or omission or alleged omission of any material fact contained in any Registration Statement, any
preliminary Prospectus or final Prospectus, or any amendment or supplement thereof; (ii) any blue sky application or other document executed by the Company specifically for that purpose or based upon written information furnished by the Company
filed in any state or other jurisdiction in order to qualify any or all of the Registrable 

  
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Securities under the securities laws thereof (any such application, document or information herein called a “Blue Sky Application”); (iii) the omission or alleged omission
to state in a Blue Sky Application a material fact required to be stated therein or necessary to make the statements therein not misleading; (iv) any violation by the Company or its agents of any rule or regulation promulgated under the 1933
Act applicable to the Company or its agents and relating to action or inaction required of the Company in connection with such registration; or (v) any failure to register or qualify the Registrable Securities included in any such Registration
Statement in any state where the Company or its agents has affirmatively undertaken or agreed in writing that the Company will undertake such registration or qualification on an Investor’s behalf and will reimburse such Investor, and each such
officer, director or member and each such controlling person for any legal or other expenses reasonably incurred by them in connection with investigating or defending any such loss, claim, damage, liability or action; provided,
however, that the Company will not be liable in any such case if and to the extent that any such loss, claim, damage or liability arises out of or is based upon an untrue statement or alleged untrue statement or omission or alleged omission
so made in conformity with information furnished by such Investor or any such controlling person in writing specifically for use in such Registration Statement or Prospectus. 
 (b) Indemnification by the Investors. Each Investor agrees, severally but not jointly, to indemnify and hold harmless, to the fullest extent permitted by law, the Company, its directors, officers,
employees, shareholders and each person who controls the Company (within the meaning of the 1933 Act) against any losses, claims, damages, liabilities and expense (including reasonable attorney fees) resulting from any untrue statement of a material
fact or any omission of a material fact required to be stated in the Registration Statement or Prospectus or preliminary Prospectus or amendment or supplement thereto or necessary to make the statements therein not misleading, to the extent, but
only to the extent that such untrue statement or omission is contained in any information furnished in writing by such Investor to the Company specifically for inclusion in such Registration Statement or Prospectus or amendment or supplement
thereto. In no event shall the liability of an Investor be greater in amount than the dollar amount of the proceeds (net of all expenses paid by such Investor in connection with any claim relating to this Section 6 and the amount of any
damages such Investor has otherwise been required to pay by reason of such untrue statement or omission) received by such Investor upon the sale of the Registrable Securities included in the Registration Statement giving rise to such indemnification
obligation. 
 (c) Conduct of Indemnification Proceedings. Any person entitled to indemnification hereunder shall
(i) give prompt notice to the indemnifying party of any claim with respect to which it seeks indemnification and (ii) permit such indemnifying party to assume the defense of such claim with counsel reasonably satisfactory to the
indemnified party; provided that any person entitled to indemnification hereunder shall have the right to employ separate counsel and to participate in the defense of such claim, but the fees and expenses of such counsel shall be at the
expense of such person unless (a) the indemnifying party has agreed to pay such fees or expenses, or (b) the indemnifying party shall have failed to assume the defense of such claim and employ counsel reasonably satisfactory to such person
or (c) in the reasonable judgment of any such person, based upon written advice of its counsel, a conflict of interest exists between such person and the indemnifying party with respect to such claims (in which case, if the person notifies the
indemnifying party in writing that such person elects to 

  
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employ separate counsel at the expense of the indemnifying party, the indemnifying party shall not have the right to assume the defense of such claim on behalf of such person); and
provided, further, that the failure of any indemnified party to give notice as provided herein shall not relieve the indemnifying party of its obligations hereunder, except to the extent that such failure to give notice shall
materially adversely affect the indemnifying party in the defense of any such claim or litigation. It is understood that the indemnifying party shall not, in connection with any proceeding in the same jurisdiction, be liable for fees or expenses of
more than one separate firm of attorneys at any time for all such indemnified parties. No indemnifying party will, except with the consent of the indemnified party, consent to entry of any judgment or enter into any settlement that does not include
as an unconditional term thereof the giving by the claimant or plaintiff to such indemnified party of a release from all liability in respect of such claim or litigation. No indemnifying party will be liable to any indemnified party under this
Agreement for any settlement by such indemnified party effected without the indemnifying party’s prior written consent, which shall not be unreasonably withheld, conditioned or delayed. 

(d) Contribution. If for any reason the indemnification provided for in the preceding paragraphs (a) and
(b) is unavailable to an indemnified party or insufficient to hold it harmless, other than as expressly specified therein, then the indemnifying party shall contribute to the amount paid or payable by the indemnified party as a result of
such loss, claim, damage or liability in such proportion as is appropriate to reflect the relative fault of the indemnified party and the indemnifying party, as well as any other relevant equitable considerations. No person guilty of fraudulent
misrepresentation within the meaning of Section 11(f) of the 1933 Act shall be entitled to contribution from any person not guilty of such fraudulent misrepresentation. In no event shall the contribution obligation of a holder of Registrable
Securities be greater in amount than the dollar amount of the proceeds (net of all expenses paid by such holder in connection with any claim relating to this Section 6 and the amount of any damages such holder has otherwise been required
to pay by reason of such untrue or alleged untrue statement or omission or alleged omission) received by it upon the sale of the Registrable Securities giving rise to such contribution obligation. 

7. Miscellaneous. 
 (a) Amendments and Waivers. This Agreement may be amended only by a writing signed by the Company and the Required Investors. The Company may take any action herein prohibited, or omit to perform
any act herein required to be performed by it, only if the Company shall have obtained the written consent to such amendment, action or omission to act, of the Required Investors. 

(b) Notices. All notices and other communications provided for or permitted hereunder shall be made as set forth in
Section 9.4 of the Purchase Agreement. 
 (c) Assignments and Transfers by Investors. The provisions of this
Agreement shall be binding upon and inure to the benefit of the Investors and their respective successors and assigns. An Investor may transfer or assign, in whole or from time to time in part, to one or more persons its rights hereunder in
connection with the transfer of Registrable Securities by such Investor to such person, provided that such Investor complies with all laws 

  
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applicable thereto and provides written notice of assignment to the Company promptly after such assignment is effected. 
 (d) Assignments and Transfers by the Company. This Agreement may not be assigned by the Company (whether by operation of law or otherwise) without the prior written consent of the Required
Investors, provided, however, that in the event that the Company is a party to a merger, consolidation, share exchange or similar business combination transaction in which the Common Stock is converted into the equity securities of another Person,
from and after the effective time of such transaction, such Person shall, by virtue of such transaction, be deemed to have assumed the obligations of the Company hereunder, the term “Company” shall be deemed to refer to such Person and the
term “Registrable Securities” shall be deemed to include the securities received by the Investors in connection with such transaction unless such securities are otherwise freely tradable by the Investors after giving effect to such
transaction. 
 (e) Benefits of the Agreement. The terms and conditions of this Agreement shall inure to the benefit of
and be binding upon the respective permitted successors and assigns of the parties. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their respective successors and assigns any
rights, remedies, obligations, or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement. 
 (f) Counterparts; Faxes. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same
instrument. This Agreement may also be executed via facsimile, which shall be deemed an original. 
 (g) Titles and
Subtitles. The titles and subtitles used in this Agreement are used for convenience only and are not to be considered in construing or interpreting this Agreement. 
 (h) Severability. Any provision of this Agreement that is prohibited or unenforceable in any jurisdiction shall, as to such jurisdiction, be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions hereof but shall be interpreted as if it were written so as to be enforceable to the maximum extent permitted by applicable law, and any such prohibition or unenforceability in any
jurisdiction shall not invalidate or render unenforceable such provision in any other jurisdiction. To the extent permitted by applicable law, the parties hereby waive any provision of law which renders any provisions hereof prohibited or
unenforceable in any respect. 
 (i) Further Assurances. The parties shall execute and deliver all such further
instruments and documents and take all such other actions as may reasonably be required to carry out the transactions contemplated hereby and to evidence the fulfillment of the agreements herein contained. 

(j) Entire Agreement. This Agreement is intended by the parties as a final expression of their agreement and intended to be a
complete and exclusive statement of the agreement and understanding of the parties hereto in respect of the subject matter contained 

  
 -11-

 
herein. This Agreement supersedes all prior agreements and understandings between the parties with respect to such subject matter. 

(k) Governing Law; Consent to Jurisdiction; Waiver of Jury Trial. This Agreement shall be governed by, and construed in
accordance with, the internal laws of the State of New York applicable to agreements made and to be performed entirely within the State of New York. Each of the parties hereto irrevocably submits to the exclusive jurisdiction of the courts of the
State of New York located in New York County and the United States District Court for the Southern District of New York for the purpose of any suit, action, proceeding or judgment relating to or arising out of this Agreement and the transactions
contemplated hereby. Service of process in connection with any such suit, action or proceeding may be served on each party hereto anywhere in the world by the same methods as are specified for the giving of notices under this Agreement. Each of the
parties hereto irrevocably consents to the jurisdiction of any such court in any such suit, action or proceeding and to the laying of venue in such court. Each party hereto irrevocably waives any objection to the laying of venue of any such suit,
action or proceeding brought in such courts and irrevocably waives any claim that any such suit, action or proceeding brought in any such court has been brought in an inconvenient forum. TO THE EXTENT ALLOWABLE UNDER APPLICABLE LAW, EACH OF THE
PARTIES HERETO WAIVES ANY RIGHT TO REQUEST A TRIAL BY JURY IN ANY LITIGATION WITH RESPECT TO THIS AGREEMENT AND REPRESENTS THAT COUNSEL HAS BEEN CONSULTED SPECIFICALLY AS TO THIS WAIVER. 

[Signature page follows.] 

  
 -12-

 IN WITNESS WHEREOF, the parties have executed this Agreement or caused their duly authorized
officers to execute this Agreement as of the date first above written. 
  

					
	The Company:	 	OVERLAND STORAGE, INC.
			
		 	By:	 	  

					
		 	Name:	 	
		 	Title:	 	

					
		
	The Placement Agent:	 	ROTH CAPITAL PARTNERS, LLC
			
		 	By:	 	  

					
		 	Name:	 	
		 	Title:	 	

  
 -13-

							
	The Investors:	 		 	[NAME]
				
		 		 	By:	 	  

		 		 	Name:
		 		 	Title:

  
 -14-

 Exhibit A 
 Plan of Distribution 
 We are registering the shares of common stock
previously issued and issuable upon exercise of the warrants to permit the resale of the shares of common stock by the selling shareholders. We will not receive any of the proceeds from the sale by the selling shareholders of the shares of common
stock. We will bear all fees and expenses incident to our obligation to register the shares of common Stock. 
 The selling
shareholders, which as used herein includes donees, pledgees, transferees or other successors-in-interest selling shares of common stock or interests in shares of common stock received after the date of this prospectus from a selling shareholder as
a gift, pledge, partnership distribution or other transfer, may, from time to time, sell, transfer or otherwise dispose of any or all of their shares of common stock or interests in shares of common stock on any stock exchange, market or trading
facility on which the shares are traded or in private transactions. These dispositions may be at fixed prices, at prevailing market prices at the time of sale, at prices related to the prevailing market price, at varying prices determined at the
time of sale, or at negotiated prices. 
 The selling shareholders may use any one or more of the following methods when
disposing of shares or interests therein: 
  

	 	•	 	 ordinary brokerage transactions and transactions in which the broker-dealer solicits purchasers; 

 

	 	•	 	 block trades in which the broker-dealer will attempt to sell the shares as agent, but may position and resell a portion of the block as principal to
facilitate the transaction; 

  

	 	•	 	 purchases by a broker-dealer as principal and resale by the broker-dealer for its account; 

 

	 	•	 	 an exchange distribution in accordance with the rules of the applicable exchange; 

 

	 	•	 	 privately negotiated transactions; 

  

	 	•	 	 short sales effected after the date the registration statement of which this prospectus is a part is declared effective by the SEC;

  

	 	•	 	 through the writing or settlement of options or other hedging transactions, whether through an options exchange or otherwise;

  

	 	•	 	 broker-dealers may agree with the selling shareholders to sell a specified number of such shares at a stipulated price per share;

  

	 	•	 	 a combination of any such methods of sale; and 

  
 -15-

	 	•	 	 any other method permitted by applicable law. 

 If the selling shareholders effect such transactions by selling shares of common stock to or through underwriters, broker-dealers or agents, such underwriters, broker-dealers or agents may receive
commissions in the form of discounts, concessions or commissions from the selling shareholders or commissions from purchasers of the shares of common stock for whom they may act as agent or to whom they may sell as principal (which discounts,
concessions or commissions as to particular underwriters, broker-dealers or agents may be in excess of those customary in the types of transactions involved). The selling shareholders may, from time to time, pledge or grant a security interest in
some or all of the shares of common stock owned by them and, if they default in the performance of their secured obligations, the pledgees or secured parties may offer and sell the shares of common stock, from time to time, under this prospectus, or
under an amendment to this prospectus under Rule 424(b)(3) or other applicable provision of the Securities Act amending the list of selling shareholders to include the pledgee, transferee or other successors in interest as selling shareholders under
this prospectus. The selling shareholders also may transfer the shares of common stock in other circumstances, in which case the transferees, pledgees or other successors in interest will be the selling beneficial owners for purposes of this
prospectus. 
 In connection with the sale of our common stock or interests therein, the selling shareholders may enter into
hedging transactions with broker-dealers or other financial institutions, which may in turn engage in short sales of the common stock in the course of hedging the positions they assume. The selling shareholders may also sell shares of our common
stock short and deliver these securities to close out their short positions, or loan or pledge the common stock to broker-dealers that in turn may sell these securities. The selling shareholders may also enter into option or other transactions with
broker-dealers or other financial institutions or the creation of one or more derivative securities which require the delivery to such broker-dealer or other financial institution of shares offered by this prospectus, which shares such broker-dealer
or other financial institution may resell pursuant to this prospectus (as supplemented or amended to reflect such transaction). 

The aggregate proceeds to the selling shareholders from the sale of the common stock offered by them will be the purchase price of the
common stock less discounts or commissions, if any. Each of the selling shareholders reserves the right to accept and, together with their agents from time to time, to reject, in whole or in part, any proposed purchase of common stock to be made
directly or through agents. We will not receive any of the proceeds from this offering. Upon any exercise of the warrants by payment of cash, however, we will receive the exercise price of the warrants. 

The selling shareholders also may resell all or a portion of the shares in open market transactions in reliance upon Rule 144 under the
Securities Act, provided that they meet the criteria and conform to the requirements of that rule. 
 Roth Capital Partners, LLC
and its affiliates and transferees are, and the other selling shareholders and any underwriters, broker-dealers or agents that participate in the sale of the 

  
 -16-

 
common stock or interests therein may be, “underwriters” within the meaning of Section 2(11) of the Securities Act. Any discounts, commissions, concessions or profit they earn on
any resale of the shares may be underwriting discounts and commissions under the Securities Act. Selling shareholders who are “underwriters” within the meaning of Section 2(11) of the Securities Act will be subject to the prospectus
delivery requirements of the Securities Act. 
 To the extent required, the shares of our common stock to be sold, the names of
the selling shareholders, the respective purchase prices and public offering prices, the names of any agents, dealer or underwriter, any applicable commissions or discounts with respect to a particular offer will be set forth in an accompanying
prospectus supplement or, if appropriate, a post-effective amendment to the registration statement that includes this prospectus. 
 In order to comply with the securities laws of some states, if applicable, the common stock may be sold in these jurisdictions only through registered or licensed brokers or dealers. In addition, in some
states the common stock may not be sold unless it has been registered or qualified for sale or an exemption from registration or qualification requirements is available and is complied with. 

We have advised the selling shareholders that the anti-manipulation rules of Regulation M under the Exchange Act may apply to sales of
shares in the market and to the activities of the selling shareholders and their affiliates. In addition, to the extent applicable we will make copies of this prospectus (as it may be supplemented or amended from time to time) available to the
selling shareholders for the purpose of satisfying the prospectus delivery requirements of the Securities Act. The selling shareholders may indemnify any broker-dealer that participates in transactions involving the sale of the shares against
certain liabilities, including liabilities arising under the Securities Act. 
 We have agreed to indemnify the selling
shareholders against liabilities, including liabilities under the Securities Act and state securities laws, relating to the registration of the shares offered by this prospectus. 

We have agreed with the selling shareholders to keep the registration statement of which this prospectus constitutes a part effective
until the earlier of (1) such time as all of the shares covered by this prospectus have been disposed of pursuant to and in accordance with the registration statement or (2) the date on which the shares may be sold without restriction
pursuant to Rule 144 of the Securities Act. 

  
 -17-Amendment No. 1 to Shareholder Rights Plan

 Exhibit 4.3 
 AMENDMENT NO. 1 TO SHAREHOLDER RIGHTS AGREEMENT 
 THIS AMENDMENT NO. 1,
dated as of March 21, 2011 (this “Amendment”), between OVERLAND STORAGE, INC., a California corporation (the “Corporation”), and WELLS FARGO BANK, N.A., as Rights Agent (the “Rights Agent”), to
the SHAREHOLDER RIGHTS AGREEMENT, dated as of August 22, 2005 (the “Rights Agreement”), between the Company and the Rights Agent. 
 WHEREAS, pursuant to and in accordance with Section 27 of the Rights Agreement, prior to the Distribution Date, the Corporation may supplement or amend any provision of the Rights Agreement and any
such amendment or supplement to the Rights Agreement duly approved by the Company shall become effective immediately upon the execution thereof by the Corporation, whether or not also executed by the Rights Agent. 

NOW, THEREFORE, pursuant to the terms of the Rights Agreement and in accordance with Section 27 thereof, the following actions are
hereby taken: 
 Section 1. Amendment to Rights Agreement. Notwithstanding the provisions of
Section 27 of the Rights Agreement, effective immediately upon the closing of the Company’s issuance and sale of shares of the Company’s common stock, no par value per share, pursuant to the terms of that certain Purchase Agreement by
and among the Company and the Investors (as defined therein) dated as of March 16, 2011, the definition of “Restricted Person” in Section 1(ll) of the Rights Agreement is hereby amended and restated in its entirety to read as
follows: 
 “ “Restricted Person” shall mean any Person, other than an Exempt Person, who,
together with all of its Associates and Affiliates, Beneficially Owns 20% or more of the outstanding Common Shares.” 

Section 2. Full Force and Effect. Except as expressly amended hereby, the Rights Agreement shall continue in full force and
effect in accordance with the provisions thereof. 
 Section 3. Governing Law. The Rights Agreement and this
Amendment shall be deemed to be contracts made under the laws of the State of California and for all purposes shall be governed by and construed in accordance with the laws of such State applicable to contracts negotiated, made and to be performed
entirely within such State. 
 [Signature Page Follows] 

 IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed as of
the day and year first above written. 
  

			
	OVERLAND STORAGE, INC.
		
	By:	 	      /s/ Eric
Kelly

			
	Name:	 	Eric Kelly
	Title:	 	Chief Executive Officer
	
	WELLS FARGO BANK, N.A., as Rights Agent

			
		
	By:	 	      /s/ Martin J.
Knapp

			
	Name:	 	Martin J. Knapp
	Title:	 	Assistant Vice President

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