exv10w1






Exhibit 10.1




REGISTRATION RIGHTS AGREEMENT




     THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is made as of _____________, by
and among Aurora Diagnostics, Inc., a Delaware corporation (the “Company”), and the Persons
listed as “Equityholders” on the Schedule of Equityholders attached hereto (each, an
“Equityholder” and, collectively, the “Equityholders”).



     WHEREAS, certain of the Equityholders are party to that certain Amended and Restated
Registration Agreement of Aurora Diagnostics Holdings, LLC, a Delaware limited liability company
(“Aurora Holdings”), dated June 12, 2009, by and among Aurora Holdings and the
“Securityholders” named therein (the “Aurora Holdings Registration Agreement”);



     WHEREAS, the Company and certain of its affiliates, including Aurora Holdings, and the
Equityholders have agreed to enter into a series of reorganization transactions to be consummated
prior to the initial public offering of the Company’s Common Stock (the “Initial Public
Offering”) pursuant to which the Equityholders will receive shares of the Company’s Common
Stock (the “Reorganization”);



     WHEREAS, in connection with the Initial Public Offering and the Reorganization, the Aurora
Holdings Registration Agreement will be terminated;



     WHEREAS, the parties desire to enter into this Agreement to replace the Aurora Holdings
Registration Agreement and to provide certain rights, including registration rights, to the
Equityholders;



     WHEREAS unless otherwise provided in this Agreement, capitalized terms used herein shall have
the meanings set forth in Section 8 hereof.



     NOW, THEREFORE, in consideration of the mutual covenants contained herein and other good and
valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties
to this Agreement hereby agree as follows:



     1. Demand Registrations.



     (a) Requests for Registration. Subject to the terms and conditions of this
Section 1, at any time and from time to time, the Majority Summit Equityholders may request
registration under the Securities Act of all or any portion of their Principal Registrable
Securities on Form S-1 or any similar long-form registration statement (“Long-Form
Registrations”), and each of the Majority Summit Equityholders and the Majority KRG
Equityholders may request registration under the Securities Act of all or any portion of their
Principal Registrable Securities on Form S-3 (including pursuant to Rule 415 under the Securities
Act) or any similar short-form registration (“Short-Form Registrations”), if available.
All registrations requested pursuant to this Section 1(a) are referred to herein as
“Demand Registrations.” Each request for a Demand Registration shall specify the
approximate number of Principal Registrable Securities requested to be registered, the anticipated
per share price range for such offering and the intended method of distribution. Within ten days
after receipt of any such request, the Company shall give written notice of such requested
registration to all other holders of Registrable Securities and, subject to the terms of
Section 1(d) hereof, shall include in such registration (and in all related registrations
and qualifications under state blue sky laws or in compliance with other registration requirements
and in any related underwriting) all Registrable Securities with respect to which the Company has
received written requests for inclusion therein within 15 days after the receipt of the Company’s
notice.



 









 





     (b) Long-Form Registrations. The Majority Summit Equityholders shall be entitled to
request three (3) Long-Form Registrations in which the Company shall pay all Registration Expenses.
A registration shall not count as one of the permitted Long-Form Registrations until it has become
effective and unless the Majority Summit Equityholders are able to register and sell at least 75%
of the Principal Registrable Securities requested to be included in such registration;
provided that in any event the Company shall pay all Registration Expenses in
connection with any registration initiated as a Long-Form Registration whether or not it has become
effective and whether or not such registration has counted as one of the permitted Long-Form
Registrations hereunder.



     (c) Short-Form Registrations. In addition to the Long-Form Registrations provided
pursuant to Section 1(b), the Majority Summit Equityholders shall be entitled to request an
unlimited number of Short-Form Registrations and the Majority KRG Equityholders shall be entitled
to request one (1) Short-Form Registration, in each case in which the Company shall pay all
Registration Expenses; provided that the aggregate offering value of the Principal
Registrable Securities requested to be registered in any Short-Form Registration must equal at
least $5,000,000. Demand Registrations shall be Short-Form Registrations whenever the Company is
permitted to use any applicable short form and if the managing underwriters (if any) agree to the
use of a Short-Form Registration. After the Company has become subject to the reporting
requirements of the Securities Exchange Act, the Company shall use its best efforts to make
Short-Form Registrations on Form S-3 available for the sale of Principal Registrable Securities.
Notwithstanding the foregoing, if a Short-Form Registration is not an underwritten registration,
the Company shall not be required to include in any such Short-Form Registration any Principal
Registrable Securities or any other securities held by any holder thereof if such holder (and all
other Persons whose securities must be aggregated at such time with those of such holder under Rule
144), at the time of filing of the registration statement for such Short-Form Registration, would
be permitted to sell all of the Principal Registrable Securities or other securities then held by
such holder, without registration, pursuant to Rule 144 during the 90-day period commencing upon
the effective date of the registration statement for any such Short-Form Registration.



     (d) Priority on Demand Registrations. The Company shall not include in any Demand
Registration any securities that are not Registrable Securities without the prior written consent
of the holders of a majority of the Principal Registrable Securities included in such registration.
If a Demand Registration is an underwritten offering and the managing underwriters advise the
Company in writing that in their opinion the number of Registrable Securities and, if permitted
hereunder, other securities requested to be included in such offering, exceeds the number of
Registrable Securities and other securities, if any, which can be sold in an orderly manner in such
offering within a price range acceptable to the holder of Principal Registrable Securities
initially requesting registration, the Company shall include in such registration, prior to the
inclusion of any securities that are not Registrable Securities, the number of Registrable
Securities requested to be included which in the opinion of such underwriters can be sold in an
orderly manner within the price range of such offering acceptable to the holder of Principal
Registrable Securities initially requesting registration, pro rata among the respective holders of
Registrable Securities on the basis of the amount of Registrable Securities owned by each such
holder; provided that the holders of Management Registrable Securities and Other
Registrable Securities (to the extent holders of Other Registrable Securities are employees of the
Company or any of its Subsidiaries) may participate in such underwritten offering only to the
extent agreed to by the managing underwriters.



     (e) Restrictions on Demand Registrations. The Company shall not be obligated to
effect any Demand Registration within 180 days after the effective date of the Company’s Initial
Public Offering or within 90 days after the effective date of a previous Demand Registration. The
Company may postpone for up to 90 days the filing or the effectiveness of a registration statement
for a Demand Registration if the Company and the holders of Principal Registrable Securities
initially requesting such



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Demand Registration agree that such Demand Registration would reasonably be expected to have a
material adverse effect on any proposal or plan by the Company or any of its Subsidiaries to engage
in any acquisition of assets (other than in the ordinary course of business) or any merger,
consolidation, tender offer, reorganization or similar transaction; provided that
in such event, the holders of Principal Registrable Securities initially requesting such Demand
Registration shall be entitled to withdraw such request and, if such request is withdrawn, such
Demand Registration shall not count as one of the permitted Demand Registrations hereunder and the
Company shall pay all Registration Expenses and the reasonable fees and disbursements of counsel
chosen by the holders Principal Registrable Securities initially requesting such Demand
Registration. The Company may delay a Demand Registration hereunder only once in any twelve-month
period.




     (f) Selection of Underwriters. The holders of a majority of the Principal Registrable
Securities included in any Demand Registration shall have the right to select the investment
banker(s) and manager(s) to administer the offering, subject to the Board’s approval which shall
not be unreasonably withheld or delayed.



     (g) Other Registration Rights. The Company represents and warrants that it is not a
party to, or otherwise subject to, any other agreement granting registration rights to any other
Person with respect to any securities of the Company. Except as expressly provided in this
Agreement, the Company shall not grant to any Persons the right to request the Company to register
any equity securities of the Company, or any securities, options or rights convertible or
exchangeable into or exercisable for such securities, other than such rights that are subordinate
to the rights granted herein, without the prior written consent of each of the Majority Summit
Equityholders and the Majority KRG Equityholders.



     (h) Obligations of Holders of Registrable Securities. Subject to the Company’s
obligations under Section 4(e) hereof, each holder of Registrable Securities shall cease
using any prospectus after receipt of written notice from the Company of the happening of any event
as a result of which such prospectus contains an untrue statement of a material fact or omits any
fact necessary to make the statements therein not misleading in light of the circumstances under
which they were made or is otherwise not legally available to support sales of Registrable
Securities.



     2. Piggyback Registrations.



     (a) Right to Piggyback. Whenever the Company proposes to register any of its
securities under the Securities Act (other than (i) pursuant to a Demand Registration or (ii) in
connection with registrations on Form S-4, S-8 or any successor or similar forms) and the
registration form to be used may be used for the registration of Registrable Securities (a
“Piggyback Registration”), the Company shall give prompt written notice to all holders of
Registrable Securities of its intention to effect such a registration and, subject to the terms of
Sections 2(c) and 2(d) hereof, shall include in such registration (and in all
related registrations or qualifications under blue sky laws or in compliance with other
registration requirements) and in any related underwriting all Registrable Securities with respect
to which the Company has received written requests for inclusion therein within 20 days after the
receipt of the Company’s notice.



     (b) Piggyback Expenses. The Registration Expenses of the holders of Registrable
Securities shall be paid by the Company in all Piggyback Registrations.



     (c) Priority on Primary Registrations. If a Piggyback Registration is an underwritten
primary registration on behalf of the Company, and the managing underwriters advise the Company in
writing that in their opinion the number of securities requested to be included in such
registration exceeds the number which can be sold in such offering without adversely affecting the
marketability of the



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offering, the Company shall include in such registration (i) first, the securities the
Company proposes to sell, (ii) second, such number of Registrable Securities requested to
be included in such registration, pro rata among the respective holders of Registrable Securities
on the basis of the number of Registrable Securities owned by each such holder immediately prior to
such registration and (iii) third, subject to Section 1(g) hereof, any other
securities requested to be included in such registration; provided that the holders
of Management Registrable Securities and Other Registrable Securities (to the extent holders of
Other Registrable Securities are employees of the Company or any of its Subsidiaries) may
participate in such underwritten offering only to the extent agreed to by the managing
underwriters.




     (d) Priority on Secondary Registrations. If a Piggyback Registration is an
underwritten secondary registration on behalf of holders of the Company’s securities, and the
managing underwriters advise the Company in writing that in their opinion the number of securities
requested to be included in such registration exceeds the number which can be sold in such offering
without adversely affecting the marketability of the offering, the Company shall include in such
registration (i) first, the securities requested to be included therein by the holders
requesting such registration and any Registrable Securities requested to be included in such
registration, pro rata among the respective holders thereof on the basis of the number of
securities owned by each such holder immediately prior to such registration and (ii)
second, subject to Section 1(g) hereof, any other securities requested to be
included in such registration; provided that the holders of Management Registrable
Securities and Other Registrable Securities (to the extent holders of Other Registrable Securities
are employees of the Company or any of its Subsidiaries) may participate in such underwritten
offering only to the extent agreed to by the managing underwriters.



     (e) Selection of Underwriters. If any Piggyback Registration is an underwritten
offering, the selection of investment banker(s) and manager(s) for the offering must be approved by
the holders of a majority of the Principal Registrable Securities included in such Piggyback
Registration. Such approval shall not be unreasonably withheld or delayed so long as such
investment banker(s) and manager(s) are of recognized national standing.



     (f) Other Registrations. If the Company has previously filed a registration statement
with respect to Registrable Securities pursuant to Section 1 or pursuant to this
Section 2, and if such previous registration has not been withdrawn or abandoned, the
Company shall not file or cause to be effected any other registration of any of its equity
securities or securities convertible or exchangeable into or exercisable for its equity securities
under the Securities Act (except on Form S-8 or any successor form), whether on its own behalf or
at the request of any holder or holders of such securities, until a period of at least 90 days has
elapsed from the effective date of such previous registration.



     3. Holdback Agreements.



     (a) Following the Company’s Initial Public Offering, no holder of Registrable Securities
(other than the Summit Equityholders and the KRG Equityholders) shall effect any public sale or
distribution (including sales pursuant to Rule 144) of equity securities of the Company, or any
securities convertible into or exchangeable or exercisable for such securities, during such period
of time (not to exceed 90 days) following the effective date of the Company’s underwritten Demand
Registration or any underwritten Piggyback Registration (except as part of such underwritten
registration or pursuant to registrations on Form S-4 or Form S-8), unless the managing
underwriters otherwise agree.



     (b) The Company (i) shall not effect any public sale or distribution of its equity securities,
or any securities, options or rights convertible into or exchangeable or exercisable for such
securities, during such period of time (not to exceed 180 days as may be determined by the
underwriters managing such underwritten registration) following the effective date of any
underwritten Demand



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Registration or any underwritten Piggyback Registration (except as part of such underwritten
registration or pursuant to registrations on Form S-4 or Form S-8 or any successor form), unless
the underwriters managing the registered public offering otherwise agree, and (ii) shall cause each
holder (other than the Summit Equityholders and the KRG Equityholders) of at least 2% (on a
fully-diluted basis) of its Common Stock, or any securities convertible into or exchangeable or
exercisable for such Common Stock, purchased or otherwise acquired from the Company at any time
after the date of this Agreement (other than in a registered public offering) to agree not to
effect any public sale or distribution (including sales pursuant to Rule 144) of any such
securities during such period (except as part of such underwritten registration, if otherwise
permitted), unless the underwriters managing the registered public offering otherwise agree.




     4. Registration Procedures. Whenever the holders of Registrable Securities have
requested that any Registrable Securities be registered pursuant to this Agreement, the Company
shall use its best efforts to effect the registration and the sale of such Registrable Securities
in accordance with the intended method of disposition thereof, and pursuant thereto the Company
shall as expeditiously as possible:



     (a) prepare and file with the Securities and Exchange Commission a registration statement, and
all amendments and supplements thereto and related prospectuses as may be necessary to comply with
applicable securities laws, with respect to such Registrable Securities and use its best efforts to
cause such registration statement to become effective (provided that before filing
a registration statement or prospectus or any amendments or supplements thereto, the Company shall
furnish to the counsel selected by the holders of a majority of the Principal Registrable
Securities covered by such registration statement copies of all such documents proposed to be
filed, which documents shall be subject to the review and comment of such counsel);



     (b) notify each holder of Registrable Securities of the effectiveness of each registration
statement filed hereunder and prepare and file with the Securities and Exchange Commission such
amendments and supplements to such registration statement and the prospectus used in connection
therewith as may be necessary to keep such registration statement effective for a period of not
less than 180 days and comply with the provisions of the Securities Act with respect to the
disposition of all securities covered by such registration statement during such period in
accordance with the intended methods of disposition by the sellers thereof set forth in such
registration statement;



     (c) furnish to each seller of Registrable Securities such number of copies of such
registration statement, each amendment and supplement thereto, the prospectus included in such
registration statement (including each preliminary prospectus and any free writing prospectus
utilized in connection with the offering) and such other documents as any such seller of
Registrable Securities included in such registration statement may reasonably request in order to
facilitate the disposition of the Registrable Securities owned by such seller;



     (d) use its best efforts to register or qualify such Registrable Securities under such other
securities or blue sky laws of such jurisdictions as any seller reasonably requests and do any and
all other acts and things which may be reasonably necessary or advisable to enable such seller to
consummate the disposition in such jurisdictions of the Registrable Securities owned by such seller
(provided that the Company shall not be required to (i) qualify generally to do
business in any jurisdiction where it would not otherwise be required to qualify but for this
Section 4(d), (ii) subject itself to taxation in any such jurisdiction or (iii) consent to
general service of process in any such jurisdiction);



     (e) notify each seller of such Registrable Securities included in such registration statement,
at any time when a prospectus relating thereto is required to be delivered under the Securities



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Act, of the happening of any event as a result of which the prospectus included in such
registration statement contains an untrue statement of a material fact or omits any fact necessary
to make the statements therein not misleading, and, at the request of any such seller, the Company
shall prepare a supplement or amendment to such prospectus so that, as thereafter delivered to the
purchasers of such Registrable Securities, such prospectus shall not contain an untrue statement of
a material fact or omit to state any fact necessary to make the statements therein not misleading;




     (f) cause all such Registrable Securities to be listed on each securities exchange on which
similar securities issued by the Company are then listed;



     (g) provide a transfer agent and registrar for all such Registrable Securities not later than
the effective date of such registration statement;



     (h) enter into such customary agreements (including underwriting agreements in customary form)
and take all such other actions as the holders of a majority of the Principal Registrable
Securities being sold or the underwriters, if any, reasonably request in order to expedite or
facilitate the disposition of such Registrable Securities (including effecting a share or unit
split or a combination of shares or units);



     (i) make available for inspection by any underwriter participating in any disposition pursuant
to such registration statement and any attorney, accountant or other agent retained by any such
underwriter, all financial and other records, pertinent corporate documents and properties of the
Company, and cause the Company’s officers, directors, employees and independent accountants to
supply all information reasonably requested by any such underwriter, attorney, accountant or agent
in connection with such registration statement;



     (j) take all reasonable action to ensure that any free writing prospectus utilized in
connection with any registration covered by Section 1 or 2 complies in all material
respects with the Securities Act, is filed in accordance with the Securities Act to the extent
required thereby, is retained in accordance with the Securities Act to the extent required thereby
and, when taken together with the related prospectus, will not contain any untrue statement of a
material fact or omit to state a material fact necessary to make the statements therein, in light
of the circumstances under which they were made, not misleading;



     (k) otherwise use its best efforts to comply with all applicable rules and regulations of the
Securities and Exchange Commission, and make available to its security holders, as soon as
reasonably practicable, an earnings statement covering the period of at least twelve months
beginning with the first day of the Company’s first full calendar quarter after the effective date
of the registration statement, which earnings statement shall satisfy the provisions of Section
11(a) of the Securities Act and Rule 158 thereunder;



     (l) permit any holder of Registrable Securities which holder, in its sole and exclusive
judgment, might be deemed to be an underwriter or a controlling person of the Company, to
participate in the preparation of such registration or comparable statement and to require the
insertion therein of material, furnished to the Company in writing, which in the reasonable
judgment of such holder and its counsel should be included;



     (m) in the event of the issuance of any stop order suspending the effectiveness of a
registration statement, or of any order suspending or preventing the use of any related prospectus
or suspending the qualification of any Common Stock included in such registration statement for
sale in any jurisdiction, the Company shall use its best efforts promptly to obtain the withdrawal
of such order;



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     (n) use its best efforts to cause such Registrable Securities covered by such registration
statement to be registered with or approved by such other governmental agencies or authorities as
may be necessary to enable the sellers thereof to consummate the disposition of such Registrable
Securities;



     (o) obtain a cold comfort letter from the Company’s independent public accountants in
customary form and covering such matters of the type customarily covered by cold comfort letters as
the holders of a majority of the Principal Registrable Securities being sold reasonably request;
and



     (p) provide a legal opinion of the Company’s outside counsel, dated the effective date of such
registration statement (or, if such registration includes an underwritten public offering, dated
the date of the closing under the underwriting agreement), with respect to the registration
statement, each amendment and supplement thereto, the prospectus included therein (including the
preliminary prospectus) and such other documents relating thereto in customary form and covering
such matters of the type customarily covered by legal opinions of such nature.



     5. Registration Expenses.



     (a) All expenses incident to the Company’s performance of or compliance with this Agreement,
including without limitation all registration, qualification and filing fees, fees and expenses of
compliance with securities or blue sky laws, printing expenses, travel expenses, filing expenses,
messenger and delivery expenses, fees and disbursements of custodians, and fees and disbursements
of counsel for the Company and all independent certified public accountants, underwriters
(excluding discounts and commissions) and other Persons retained by the Company (all such expenses
being herein called “Registration Expenses”), shall be borne by the Company as provided in
this Agreement, and the Company shall also pay all of its internal expenses (including, without
limitation, all salaries and expenses of its officers and employees performing legal or accounting
duties), the expense of any annual audit or quarterly review, the expense of any liability
insurance and the expenses and fees for listing the securities to be registered on each securities
exchange on which similar securities issued by the Company are then listed or on the NASD automated
quotation system (or any successor or similar system).



     (b) In connection with each Demand Registration and each Piggyback Registration, the Company
shall reimburse the holders of Registrable Securities included in such registration for the
reasonable fees and disbursements of one counsel chosen by (i) the holders of the Principal
Registrable Securities initially requesting registration in the case of a Demand Registration, and
(ii) the holders of a majority of the Principal Registrable Securities included in such
registration in the case of a Piggyback Registration.



     6. Indemnification.



     (a) The Company agrees to indemnify and hold harmless, to the fullest extent permitted by law,
each holder of Registrable Securities, its officers and directors and each Person who controls such
holder (within the meaning of the Securities Act) against all losses, claims, actions, damages,
liabilities and expenses caused by (i) any untrue or alleged untrue statement of material fact
contained in any registration statement, prospectus, preliminary prospectus, free writing
prospectus or any amendment thereof or supplement thereto or any omission or alleged omission of a
material fact required to be stated therein or necessary to make the statements therein not
misleading, or (ii) any violation or alleged violation by the Company of the Securities Act or any
other similar federal or state securities laws or any rule or regulation promulgated thereunder
applicable to the Company and relating to action or inaction required of the Company in connection
with any such registration, qualification or compliance, and to pay to each holder of Registrable
Securities, its officers and directors and each Person who controls



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such holder (within the meaning of the Securities Act), as incurred, any legal and any other
expenses reasonably incurred in connection with investigating, preparing or defending any such
claim, loss, damage, liability or action, except insofar as the same are caused by or contained in
any information furnished in writing to the Company by or on behalf of such holder expressly for
use therein. In connection with an underwritten offering, the Company shall indemnify such
underwriters, their officers and directors and each Person who controls such underwriters (within
the meaning of the Securities Act) to the same extent as provided above with respect to the
indemnification of the holders of Registrable Securities.




     (b) In connection with any registration statement in which a holder of Registrable Securities
is participating, each such holder shall furnish to the Company in writing such information and
affidavits as the Company reasonably requests for use in connection with any such registration
statement or prospectus and, to the fullest extent permitted by law, shall indemnify and hold
harmless the Company, its directors and officers and each Person who controls the Company (within
the meaning of the Securities Act) and each other holder of Registrable Securities included in any
such registration statement against any losses, claims, damages, liabilities and expenses resulting
from any untrue or alleged untrue statement of material fact contained in the registration
statement, prospectus or preliminary prospectus or any amendment thereof or supplement thereto or
any omission or alleged omission of a material fact required to be stated therein or necessary to
make the statements therein not misleading, but only to the extent that such untrue statement or
omission is contained in any information or affidavit so furnished in writing by such holder
expressly for use therein; provided that the obligation to indemnify shall be
individual, not joint and several, for each holder and shall be limited to the net amount of
proceeds received by such holder from the sale of Registrable Securities pursuant to such
registration statement.



     (c) Any Person entitled to indemnification hereunder shall (i) give prompt written notice to
the indemnifying party of any claim with respect to which it seeks indemnification
(provided that the failure to give prompt notice shall not impair any Person’s
right to indemnification hereunder to the extent such failure has not prejudiced the indemnifying
party) and (ii) unless in such indemnified party’s reasonable judgment a conflict of interest
between such indemnified and indemnifying parties may exist with respect to such claim, permit such
indemnifying party to assume the defense of such claim with counsel reasonably satisfactory to the
indemnified party. If such defense is assumed, the indemnifying party shall not be subject to any
liability for any settlement made by the indemnified party without its consent (but such consent
shall not be unreasonably withheld or delayed). An indemnifying party who is not entitled to, or
elects not to, assume the defense of a claim shall not be obligated to pay the fees and expenses of
more than one counsel for all parties indemnified by such indemnifying party with respect to such
claim, unless in the reasonable judgment of any indemnified party a conflict of interest may exist
between such indemnified party and any other of such indemnified parties with respect to such
claim. In such instance, the conflicting indemnified parties shall have a right to retain one
separate counsel, chosen by the conflicting indemnified parties holding a majority of the
Registrable Securities included in the registration, at the expense of the indemnifying party. No
indemnifying party, in the defense of such claim or litigation, shall, except with the consent of
each indemnified party, consent to the entry of any judgment or enter into any settlement which
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 to such claim or litigation.



     (d) The indemnification provided for under this Agreement shall remain in full force and
effect regardless of any investigation made by or on behalf of the indemnified party or any
officer, director or controlling Person of such indemnified party and shall survive the transfer of
securities. The Company also agrees to make such provisions, as are reasonably requested by any
indemnified party, for contribution to such party in the event the Company’s indemnification is
unavailable for any reason.



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     7. Participation in Underwritten Registrations. No Person may participate in any
registration hereunder which is underwritten unless such Person (i) agrees to sell such Person’s
securities on the basis provided in any underwriting arrangements approved by the Person or Persons
entitled hereunder to approve such arrangements and (ii) completes and executes all questionnaires,
powers of attorney, indemnities, underwriting agreements and other documents required under the
terms of such underwriting arrangements; provided that no holder of Registrable
Securities included in any underwritten registration shall be required to make any representations
or warranties to the Company or the underwriters (other than representations and warranties
regarding such holder and such holder’s intended method of distribution), or to undertake any
indemnification obligations to the Company or the underwriters with respect thereto, except as
otherwise specifically provided in Section 6 hereof, or to agree to any lock-up or holdback
restrictions, except as otherwise specifically provided in Section 3(a) hereof.



     8. Definitions.



     (a) “Common Stock” shall mean the common stock, par value $0.01 per share, of the
Company or, following any consolidation, merger, reclassification or other similar event involving
the Company, any shares or other securities of the Company that become payable in consideration for
such stock or into which such stock is exchanged or converted as a result of such consolidation,
merger, reclassification or other similar event.



     (b) “KRG Equityholders” means the Persons listed under the subheading titled “KRG
Equityholders” on the Schedule of Equityholders attached hereto.



     (c) “Majority KRG Equityholders” means the KRG Equityholders holding a majority of the
Common Stock then held by all of the KRG Equityholders.



     (d) “Majority Summit Equityholders” means the Summit Equityholders holding a majority
of the Common Stock then held by all of the Summit Equityholders.



     (e) “Management Equityholders” means the Persons listed under the subheading titled
“Management Equityholders” on the Schedule of Equityholders attached hereto.



     (f) “Management Registrable Securities” means (i) any Common Stock issued to the
Management Equityholders, including any Common Stock issuable or issued upon conversion or exchange
of other securities of the Company or any of its Subsidiaries and (ii) any other equity securities
of the Company or a Subsidiary of the Company issued or issuable directly or indirectly with
respect to the securities referred to in clause (i) above by way of a dividend,
distribution or equity split or in connection with a combination of equity interests,
recapitalization, reclassification, merger, consolidation or other reorganization. As to any
particular Management Registrable Securities, such securities shall cease to be Management
Registrable Securities when they have been distributed to the public pursuant to an offering
registered under the Securities Act or sold to the public through a broker, dealer or market maker
in compliance with Rule 144 under the Securities Act (or any similar rule then in force) or
repurchased by the Company or any Subsidiary.



     (g) “Other Equityholders” means the Persons listed under the subheading titled “Other
Equityholders” on the Schedule of Equityholders attached hereto.



     (h) “Other Registrable Securities” means (i) any Common Stock issued to the Other
Equityholders, including any Common Stock issuable or issued upon conversion or exchange of other
securities of the Company or any of its Subsidiaries and (ii) common equity securities of the
Company or



9









 




a Subsidiary of the Company issued or issuable with respect to the securities referred to in
clause (i) above by way of dividend, distribution, split or combination of securities, or
any recapitalization, merger, consolidation or other reorganization. As to any particular Other
Registrable Securities, such securities shall cease to be Other Registrable Securities when they
have been distributed to the public pursuant to an offering registered under the Securities Act or
sold to the public through a broker, dealer or market maker in compliance with Rule 144 under the
Securities Act (or any similar rule then in force) or repurchased by the Company or any Subsidiary.




     (i) “Person” means an individual, a partnership, a corporation, a limited liability
company, an association, a joint stock company, a trust, a joint venture, an unincorporated
organization and a governmental entity or any department, agency, or political subdivision thereof.



     (j) “Principal Equityholders” means the Summit Equityholders and the KRG
Equityholders.



     (k) “Principal Registrable Securities” means (i) any Common Stock issued to the
Principal Equityholders, including any Common Stock issuable or issued upon conversion or exchange
of other securities of the Company or any of its Subsidiaries and (ii) any other equity securities
of the Company or a Subsidiary of the Company issued or issuable directly or indirectly with
respect to the securities referred to in clause (i) above by way of a dividend,
distribution or equity split or in connection with a combination of equity interests,
recapitalization, reclassification, merger, consolidation or other reorganization. As to any
particular Principal Registrable Securities, such securities shall cease to be Principal
Registrable Securities when they have been distributed to the public pursuant to an offering
registered under the Securities Act or sold to the public through a broker, dealer or market maker
in compliance with Rule 144 under the Securities Act (or any similar rule then in force) or
repurchased by the Company or any Subsidiary. As to any particular Principal Registrable
Securities held by the Principal Equityholders, such securities shall also cease to be Principal
Registrable Securities when they have been distributed by the Principal Equityholders to any of
their direct or indirect partners or members. For purposes of this Agreement and subject to the
foregoing limitations, a Person shall be deemed to be a holder of Principal Registrable Securities,
and the Principal Registrable Securities shall be deemed to be in existence, whenever such Person
has the right to acquire directly or indirectly such Principal Registrable Securities (upon
conversion or exercise in connection with a transfer of securities or otherwise, but disregarding
any restrictions or limitations upon the exercise of such right), whether or not such acquisition
has actually been effected, and such Person shall be entitled to exercise the rights of a holder of
Principal Registrable Securities hereunder.



     (l) “Registrable Securities” means, collectively, Principal Registrable Securities,
the Management Registrable Securities and the Other Registrable Securities.



     (m) “Securities Act” means the Securities Act of 1933, as amended, and the rules and
regulations promulgated from time to time thereafter.



     (n) “Securities Exchange Act” means the Securities Exchange Act of 1934, as amended,
and the rules and regulations promulgated from time to time thereafter.



     (o) “Summit Equityholders” means the Persons listed under the subheading titled
“Summit Equityholders” on the Schedule of Equityholders attached hereto.



     9. Current Public Information. At all times after the Company has filed a
registration statement with the Securities and Exchange Commission pursuant to the requirements of
either the Securities Act or the Securities Exchange Act, the Company shall file all reports
required to be



10









 




filed by it under the Securities Act and the Securities Exchange Act and the rules and
regulations adopted by the Securities and Exchange Commission thereunder.




     10. Miscellaneous.



     (a) Additional Parties. In connection with the issuance of any additional equity
securities of the Company, the Company, with the consent of the Majority Summit Equityholders and
the Majority KRG Equityholders, may permit such Person to become a party to this Agreement and
succeed to all of the rights and obligations of a holder of any particular category of Registrable
Securities under this Agreement by obtaining an executed counterpart signature page of this
Agreement and, upon such execution, such Person shall for all purposes be a holder of such category
of Registrable Securities and party to this Agreement.



     (b) Remedies. Any Person having rights under any provision of this Agreement shall be
entitled to enforce such rights specifically (without posting a bond or other security), to recover
damages caused by reason of any breach of any provision of this Agreement and to exercise all other
rights granted by law. The parties hereto agree and acknowledge that money damages would not be an
adequate remedy for any breach of the provisions of this Agreement and that, in addition to any
other rights and remedies existing in its favor, any party shall be entitled to specific
performance and/or other injunctive relief from any court of law or equity of competent
jurisdiction (without posting any bond or other security) in order to enforce or prevent violation
of the provisions of this Agreement.



     (c) Amendments and Waivers. Except as otherwise provided herein, the provisions of
this Agreement may be amended or waived only upon the prior written consent of the Company, the
Majority Summit Equityholders and the Majority KRG Equityholders and, in the case of any amendment
or waiver that materially and adversely affects the holders of Management Registrable Securities
and Other Registrable Securities in a manner materially different than the holders of Principal
Registrable Securities, the holders of a majority of the Management Registrable Securities and
Other Registrable Securities acting as a single class. The failure of any party to enforce any of
the provisions of this Agreement shall in no way be construed as a waiver of such provisions and
shall not affect the right of such party thereafter to enforce each and every provision of this
Agreement in accordance with its terms.



     (d) Successors and Assigns. All covenants and agreements in this Agreement by or on
behalf of any of the parties hereto shall bind and inure to the benefit of the respective
successors and assigns of the parties hereto whether so expressed or not. In addition, whether or
not any express assignment has been made, the provisions of this Agreement which are for the
benefit of purchasers or holders of Principal Registrable Securities, Management Registrable
Securities or Other Registrable Securities are, subject to the conditions and limitations of this
Agreement, also for the benefit of, and enforceable by, any subsequent holder of Principal
Registrable Securities, Management Registrable Securities or Other Registrable Securities.



     (e) Severability. Whenever possible, each provision of this Agreement shall be
interpreted in such manner as to be effective and valid under applicable law, but if any provision
of this Agreement is held to be prohibited by or invalid, illegal or unenforceable in any respects
under applicable law, such provision shall be ineffective only to the extent of such prohibition,
invalidity, illegality or unenforceability, without invalidating the remainder of this Agreement.



     (f) Counterparts. This Agreement may be executed simultaneously in two or more
counterparts, any one of which need not contain the signatures of more than one party, but all such
counterparts taken together shall constitute one and the same Agreement.



11









 





     (g) Descriptive Headings. The descriptive headings of this Agreement are inserted for
convenience only and do not constitute a part of this Agreement.



     (h) Governing Law. The corporate law of the State of Delaware shall govern all issues
and questions concerning the relative rights of the Company and its equityholders. All other
issues and questions concerning the construction, validity, interpretation and enforcement of this
Agreement and the exhibits and schedules hereto shall be governed by, and construed in accordance
with, the laws of the State of Delaware, without giving effect to any choice of law or conflict of
law rules or provisions (whether of the State of Delaware or any other jurisdiction) that would
cause the application of the laws of any jurisdiction other than the State of Delaware.



     (i) MUTUAL WAIVER OF JURY TRIAL. BECAUSE DISPUTES ARISING IN CONNECTION WITH COMPLEX
TRANSACTIONS ARE MOST QUICKLY AND ECONOMICALLY RESOLVED BY AN EXPERIENCED AND EXPERT PERSON AND THE
PARTIES WISH APPLICABLE STATE AND FEDERAL LAWS TO APPLY (RATHER THAN ARBITRATION RULES), THE
PARTIES DESIRE THAT THEIR DISPUTES BE RESOLVED BY A JUDGE APPLYING SUCH APPLICABLE LAWS.
THEREFORE, TO ACHIEVE THE BEST COMBINATION OF THE BENEFITS OF THE JUDICIAL SYSTEM AND OF
ARBITRATION, EACH PARTY TO THIS AGREEMENT HEREBY WAIVES ALL RIGHTS TO TRIAL BY JURY IN ANY ACTION,
SUIT, OR PROCEEDING BROUGHT TO RESOLVE ANY DISPUTE BETWEEN OR AMONG ANY OF THE PARTIES HERETO,
WHETHER ARISING IN CONTRACT, TORT, OR OTHERWISE, ARISING OUT OF, CONNECTED WITH, RELATED OR
INCIDENTAL TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY.



     (j) Notices. All notices, demands or other communications to be given or delivered
under or by reason of the provisions of this Agreement shall be in writing and shall be deemed to
have been given when delivered personally to the recipient, sent to the recipient by reputable
overnight courier service (charges prepaid) or mailed to the recipient by certified or registered
mail, return receipt requested and postage prepaid. Such notices, demands and other communications
shall be sent to each Principal Equityholder at the address indicated on the Schedule of
Equityholders attached hereto and to the Company at the address indicated below:




Aurora Diagnostics, Inc.

11025 RCA Center Dr., Ste. 300

Palm Beach Gardens, FL 33410

Attention: Chief Executive Officer


or to such other address or to the attention of such other person as the recipient party has
specified by prior written notice to the sending party.




     (k) No Strict Construction. The parties hereto have participated jointly in the
negotiation and drafting of this Agreement. In the event an ambiguity or question of intent or
interpretation arises, this Agreement shall be construed as if drafted jointly by the parties
hereto, and no presumption or burden of proof shall arise favoring or disfavoring any party by
virtue of the authorship of any of the provisions of this Agreement.



* * * * *




12












 





     IN WITNESS WHEREOF, the parties hereto have executed this Registration Rights Agreement on the
date first written above.



	 	 	 	 	 
	 	AURORA DIAGNOSTICS, INC.

 	 
	 	By:  	 	 
	 	 	James C. New 	 
	 	 	Chief Executive Officer 	 
	 
	 
	 	SUMMIT VENTURES VI-A, L.P.

 	 
	 	By:  	Summit Partners VI (GP), L.P.
 	 
	 	Its:  	General Partner 	 
	 
	 	By:  	Summit Partners VI (GP), LLC
 	 
	 	Its:  	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 
	 
	 	SUMMIT VENTURES VI-B, L.P.

 	 
	 	By:  	Summit Partners VI (GP), L.P.
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	Summit Partners VI (GP), LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 
	 
	 	SUMMIT PARTNERS VI (GP), L.P.

 	 
	 	By:  	Summit Partners VI (GP), LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 



[Signature Page to Registration Rights Agreement]





 









 





	 	 	 	 	 
	 	SUMMIT VI ENTREPRENEURS FUND, L.P.

 	 
	 	By:  	Summit Partners VI (GP), L.P.
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	
Summit Partners VI (GP), LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 
	 
	 	SUMMIT VI ADVISORS FUND, L.P.

 	 
	 	By:  	Summit Partners VI (GP), L.P.
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	Summit Partners VI (GP), LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 
	 
	 	SUMMIT INVESTORS VI, L.P.

 	 
	 	By:  	Summit Partners VI (GP), L.P.
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	Summit Partners VI (GP), LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 
	 
	 	SUMMIT PARTNERS PRIVATE EQUITY FUND
VII-A, L.P.

 	 
	 	By:  	Summit Partners PE VII, L.P.
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	Summit Partners PE VII, LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 



[Signature Page to Registration Rights Agreement]





 









 





	 	 	 	 	 
	 	SUMMIT PARTNERS PRIVATE EQUITY FUND
VII-B, L.P.

 	 
	 	By:  	Summit Partners PE VII, L.P.
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	Summit Partners PE VII, LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 
	 
	 	SUMMIT PARTNERS PE VII, L.P.

 	 
	 	By:  	Summit Partners PE VII, LLC
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Thomas S. Roberts 	 
	 	 	Member 	 
	 



[Signature Page to Registration Rights Agreement]





 









 





	 	 	 	 	 
	 	KRG CAPITAL FUND IV, L.P.

 	 
	 	By:  	KRG Capital Management, L.P., with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	KRG Capital, LLC, with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Mark M. King 	 
	 	 	Managing Director 	 
	 
	 
	 	KRG CAPITAL FUND IV-A, L.P.

 	 
	 	By:  	KRG Capital Management, L.P., with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	KRG Capital, LLC, with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Mark M. King 	 
	 	 	Managing Director 	 
	 
	 
	 	KRG CAPITAL FUND IV (PA), L.P.

 	 
	 	By:  	KRG Capital Management, L.P., with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	KRG Capital, LLC, with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Mark M. King 	 
	 	 	Managing Director 	 
	 



[Signature Page to Registration Rights Agreement]





 









 





	 	 	 	 	 
	 	KRG CAPITAL FUND IV (FF), L.P.

 	 
	 	By:  	KRG Capital Management, L.P., with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	KRG Capital, LLC, with respect to its Class IV series
 	 
	 	Its: 	General Partner 	 
	 
	 	By:  	 	 
	 	 	Mark M. King 	 
	 	 	Managing Director 	 
	 
	 
	 	KRG CO-INVESTMENT, L.L.C.

 	 
	 	By:  	King Consulting Corporation
 	 
	 	Its: 	Managing Member 	 
	 
	 	By:  	 	 
	 	 	Mark M. King 	 
	 	 	President 	 
	 



[Signature Page to Registration Rights Agreement]





 









 





	 	 	 

	 

	 	James C. New
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Christopher Jahnle
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Kirk A. Rebane
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Martin J. Stefanelli
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Fred Ferrara
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Michael Null
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Deanna Shackley
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Michael Grattendick
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 
	 

	 	Greg Marsh
	 
	 	 
	 
	 	 
	 

	 	 
	 
	 	 
	 
	 	 





[Signature Page to Registration Rights Agreement]




 









 





SCHEDULE OF EQUITYHOLDERS




Principal Equityholders




Summit Equityholders





Summit Ventures VI-A, L.P.

Summit Ventures VI-B, L.P.

Summit Partners VI (GP), L.P.

Summit VI Entrepreneurs Fund, L.P.

Summit VI Advisors Fund, L.P.

Summit Investors VI, L.P.

Summit Partners Private Equity Fund VII-A, L.P.

Summit Partners Private Equity Fund VII-B, L.P.

Summit Partners PE VII, L.P.




c/o Summit Partners, L.P.

222 Berkeley Street

18th Floor

Boston, Massachusetts 02116

Telephone:         (617) 824-1000

Telecopy:           (617) 824-1100

Attention:          Thomas S. Roberts




with a copy to:

(which shall not constitute notice to the Summit Equityholders)




Kirkland & Ellis LLP

200 East Randolph Drive

Chicago, Illinois 60601

Telephone:         (312) 861-2000

Telecopy:           (312) 861-2200

Attention:          Ted H. Zook, P.C.



KRG Equityholders





KRG Capital Fund IV, L.P.

KRG Capital Fund IV-A, L.P.

KRG Capital Fund IV (PA), L.P.

KRG Capital Fund IV (FF), L.P.

KRG Co-Investment, L.L.C.





1515 Arapahoe St, Tower One, Suite 1500

Denver, CO 80202

Attention: Mark M. King

                   Christopher Bock




with a copy to:

(which shall not constitute notice to the KRG Equityholders)



 









 






Hogan & Hartson LLP

One Tabor Center, Suite 1500

1200 Seventeenth Street

Denver, Colorado 80202

Attention: George A. Hagerty



Management Equityholders




Fred Ferrara

169 Via Condado Way

Palm Beach Gardens, FL 33418




Michael Grattendick

5700 Descartes Cir.

Boynton Beach, FL 33437




Greg Marsh

10254 Hunt Club Ln.

Palm Beach Gardens, FL 33418




James C. New

11025 RCA Center Dr., Ste. 300

Palm Beach Gardens, FL 33410




Michael Null

188 N. Glenhurst Dr.

Bloomfield, MI 48301




Deanna Schackley

325 Huron Pl.

West Palm Beach, FL 33409




Martin Stefanelli

7629 Hawks Landing Dr.

West Palm Beach, FL 33412




Other Equityholders




Christopher Jahnle

c/o Haverford Financial Advisors

Paoli Executive Green, II

43 Leopard Road

Suite 102

Paoli, Pennsylvania 19301




Kirk A. Rebane

c/o Haverford Financial Advisors

Paoli Executive Green, II

43 Leopard Road

Suite 102

Paoli, Pennsylvania 19301




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