Document:

Form of Medium-Term Notes, Series K, Principal at Risk Securities

 Exhibit 4.1 

[Face of Note] 

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation
(“DTC”), to the Company or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as requested by an authorized representative
of DTC (and any payment is made to Cede & Co. or such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the
registered owner hereof, Cede & Co., has an interest herein. 
  

	 CUSIP NO. 94986RJ85 
	
FACE AMOUNT: $                   
          

 REGISTERED NO.      

WELLS FARGO & COMPANY 

MEDIUM-TERM NOTE, SERIES K 

Due Nine Months or More From Date of Issue 

Principal at Risk Securities Linked to the S&P 500® Index 

due May 6, 2019 

WELLS FARGO & COMPANY, a corporation duly organized and existing under the laws of the State of Delaware (hereinafter
called the “Company,” which term includes any successor corporation under the Indenture hereinafter referred to), for value received, hereby promises to pay to CEDE & Co., or registered assigns, an amount equal to the
Redemption Amount (as defined below), in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts, on the Stated Maturity Date, unless this Security is automatically
called as provided below under “Automatic Call.” The “Initial Stated Maturity Date” shall be May 6, 2019. If the Final Calculation Day (as defined below) is not postponed, the Initial Stated Maturity Date will be the
“Stated Maturity Date.” If the Final Calculation Day is postponed, the “Stated Maturity Date” shall be the later of (i) the Initial Stated Maturity Date and (ii) the third Business Day (as defined below)
after the Final Calculation Day as postponed. This Security shall not bear any interest. 
 Any payments on this Security at
Maturity will be made against presentation of this Security at the office or agency of the Company maintained for that purpose in the City of Minneapolis, Minnesota and at any other office or agency maintained by the Company for such purpose. 

“Face Amount” shall mean, when used with respect to this Security, the amount set forth on the face of this
Security as its “Face Amount.” 

 Automatic Call 

If the Closing Level (as defined below) of the Index (as defined below) on any of the Call Dates (as defined in the table
below) (including the Final Calculation Day) is greater than or equal to the Starting Level (as defined below), this Security will be automatically called by the Company, and on the related Call Settlement Date (as defined below) the Holder hereof
will receive the Face Amount of this Security plus the Call Premium (as defined in the table below) applicable to the relevant Call Date (together, the “Call Price”). Unless the Company defaults in the payment of the Call Price, this
Security will cease to be outstanding on such Call Settlement Date, and the Holder hereof will have no further rights under this Security after such Call Settlement Date. The Holder hereof will not receive any notice from the Company in the event
this Security is automatically called pursuant to the terms hereof. 
 The Call Dates and the related Call Premiums are as
follows: 
  

			
	 Call Date
	  	 Call Premium

		
	 May 8, 2017
	  	6.75% of the Face Amount of this Security
	 May 7, 2018
	  	13.50% of the Face Amount of this Security
	 April 29, 2019
	  	20.25% of the Face Amount of this Security

 The Call Dates are subject to postponement for non-Trading Days and the occurrence of a Market Disruption
Event. See the definition of “Calculation Days” below. 
 The “Call Settlement Date” for a Call Date
shall be five Business Days after such Call Date, as such Call Date may be postponed as provided herein; provided that the Call Settlement Date for the last Call Date shall be the Stated Maturity Date. 

Payment of the Call Price, if any, will be made in such coin or currency of the United States of America as at the time is
legal tender for payment of public and private debts. 
 Determination of Redemption Amount and Certain Definitions 

If this Security is not automatically called as provided above under “Automatic Call,” the “Redemption
Amount” of this Security will equal: 
  

	 	•	 	 if the Ending Level is greater than or equal to the Threshold Level: the Face Amount; or

  

	 	•	 	 if the Ending Level is less than the Threshold Level: the Face Amount minus: 

 

																					
		 		 	 	 	Face Amount  	 	x  	 	Threshold Level – Ending Level	 	 	 		 		 		 	
		 		 	 	 	 	 	Starting Level	 	 	 		 		 		 	

 All calculations with respect to the Redemption Amount or Call Price, as applicable, will be rounded to the
nearest one hundred-thousandth, with five one-millionths rounded upward (e.g., 

  
 2 

 
0.000005 would be rounded to 0.00001); and the Redemption Amount or Call Price, as applicable, will be rounded to the nearest cent, with one-half cent rounded upward. 

“Index” shall mean the S&P 500® Index. 

The “Pricing Date” shall mean April 29, 2016. 

The “Starting Level” is 2065.30, the Closing Level of the Index on the Pricing Date. 

The “Closing Level” of the Index on any Trading Day means the official closing level of the Index reported by
the Index Sponsor on such Trading Day, as obtained by the Calculation Agent on such Trading Day from the licensed third-party market data vendor contracted by the Calculation Agent at such time; in particular, taking into account the decimal
precision and/or rounding convention employed by such licensed third-party market data vendor on such date, subject to the provisions set forth below under “Discontinuance of The Index; Alteration of Method of Calculation” and “Market
Disruption Events.” 
 The “Ending Level” will be the Closing Level of the Index on the Final
Calculation Day. 
 The “Threshold Level” is 1858.77, which is equal to 90% of the Starting Level. 

“Index Sponsor” shall mean S&P Dow Jones Indices LLC. 

“Business Day” shall mean a day, other than a Saturday or Sunday, that is neither a legal holiday nor a day
on which banking institutions are authorized or required by law or regulation to close in New York, New York. 
 A
“Trading Day” means a day, as determined by the Calculation Agent, on which (i) the Relevant Stock Exchanges with respect to each security underlying the Index are scheduled to be open for trading for their respective regular
trading sessions and (ii) each Related Futures or Options Exchange is scheduled to be open for trading for its regular trading session. 

The “Related Futures or Options Exchange” for the Index means an exchange or quotation system where trading
has a material effect (as determined by the Calculation Agent) on the overall market for futures or options contracts relating to the Index. 

The “Relevant Stock Exchange” for any security underlying the Index means the primary exchange or quotation
system on which such security is traded, as determined by the Calculation Agent. 
 The “Calculation Days”
shall mean each of the Call Dates (including the Final Calculation Day). If any Calculation Day is not a Trading Day, such Calculation Day will be postponed to the next succeeding Trading Day. A Calculation Day is also subject to postponement due to
the occurrence of a Market Disruption Event (as defined below). If a Market Disruption Event occurs or is continuing with respect to the Index on a Calculation Day, such Calculation Day will be postponed to the first succeeding Trading Day on which
a Market 

  
 3 

 
Disruption Event has not occurred and is not continuing; however, if such first succeeding Trading Day has not occurred as of the eighth Trading Day after the originally scheduled Calculation
Day, that eighth Trading Day shall be deemed to be the Calculation Day. If a Calculation Day has been postponed eight Trading Days after the originally scheduled Calculation Day and a Market Disruption Event occurs or is continuing on such eighth
Trading Day, the Calculation Agent will determine the Closing Level of the Index on such eighth Trading Day in accordance with the formula for and method of calculating the Closing Level of the Index last in effect prior to commencement of the
Market Disruption Event, using the closing price (or, with respect to any relevant security, if a Market Disruption Event has occurred with respect to such security, its good faith estimate of the value of such security at the Scheduled Closing Time
of the Relevant Stock Exchange for such security or, if earlier, the actual closing time of the regular trading session of such Relevant Stock Exchange) on such date of each security included in the Index. As used herein, “closing
price” means, with respect to any security on any date, the Relevant Stock Exchange traded or quoted price of such security as of the Scheduled Closing Time of the Relevant Stock Exchange for such security or, if earlier, the actual closing
time of the regular trading session of such Relevant Stock Exchange. 
 The “Final Calculation Day” is
April 29, 2019, subject to postponement as provided herein. 
 “Calculation Agent Agreement” shall
mean the Calculation Agent Agreement dated as of March 18, 2015 between the Company and the Calculation Agent, as amended from time to time. 

“Calculation Agent” shall mean the Person that has entered into the Calculation Agent Agreement with the
Company providing for, among other things, the determination of whether this Security will be automatically called on any of the Call Dates, the Call Price, if any, the Ending Level and the Redemption Amount, which term shall, unless the context
otherwise requires, include its successors under such Calculation Agent Agreement. The initial Calculation Agent shall be Wells Fargo Securities, LLC. Pursuant to the Calculation Agent Agreement, the Company may appoint a different Calculation Agent
from time to time after the initial issuance of this Security without the consent of the Holder of this Security and without notifying the Holder of this Security. 

Discontinuance Of The Index; Alteration Of Method Of Calculation 

If the Index Sponsor discontinues publication of the Index, and the Index Sponsor or another entity publishes a successor or
substitute equity index that the Calculation Agent determines, in its sole discretion, to be comparable to the Index (a “Successor Equity Index”), then, upon the Calculation Agent’s notification of that determination to the
Trustee and the Company, the Calculation Agent will substitute the Successor Equity Index as calculated by the Index Sponsor or any other entity and calculate the Ending Level or the Closing Level on any Calculation Day as described above. Upon any
selection by the Calculation Agent of a Successor Equity Index, the Company will cause notice to be given to the Holder of this Security. 

In the event that the Index Sponsor discontinues publication of the Index prior to, and the discontinuance is continuing on, a
Calculation Day and the Calculation Agent determines that no Successor Equity Index is available at such time, the Calculation Agent will calculate a 

  
 4 

 
substitute Closing Level for the Index in accordance with the formula for and method of calculating the Index last in effect prior to the discontinuance, but using only those securities that
comprised the Index immediately prior to that discontinuance. If a Successor Equity Index is selected or the Calculation Agent calculates a level as a substitute for the Index, the Successor Equity Index or level will be used as a substitute for the
Index for all purposes, including the purpose of determining whether a Market Disruption Event exists. 
 If on a
Calculation Day the Index Sponsor fails to calculate and announce the level of the Index, the Calculation Agent will calculate a substitute Closing Level of the Index in accordance with the formula for and method of calculating the Index last in
effect prior to the failure, but using only those securities that comprised the Index immediately prior to that failure; provided that, if a Market Disruption Event occurs or is continuing on such day, then the provisions set forth above
under the definition of “Calculation Day” shall apply in lieu of the foregoing. 
 If at any time the Index
Sponsor makes a material change in the formula for or the method of calculating the Index, or in any other way materially modifies the Index (other than a modification prescribed in that formula or method to maintain the Index in the event of
changes in constituent stock and capitalization and other routine events), then, from and after that time, the Calculation Agent will, at the close of business in New York, New York, on each date that the Closing Level of the Index is to be
calculated, calculate a substitute Closing Level of the Index in accordance with the formula for and method of calculating the Index last in effect prior to the change, but using only those securities that comprised the Index immediately prior to
that change. Accordingly, if the method of calculating the Index is modified so that the level of the Index is a fraction or a multiple of what it would have been if it had not been modified, then the Calculation Agent will adjust the Index in order
to arrive at a level of the Index as if it had not been modified. 
 Market Disruption Events 

A “Market Disruption Event” means any of the following events as determined by the Calculation Agent in its
sole discretion: 
  

	 	(A)	 The occurrence or existence of a material suspension of or limitation imposed on trading by the Relevant Stock
Exchanges or otherwise relating to securities which then comprise 20% or more of the level of the Index or any Successor Equity Index at any time during the one-hour period that ends at the Close of Trading on that day, whether by reason of
movements in price exceeding limits permitted by those Relevant Stock Exchanges or otherwise. 

  

	 	(B)	 The occurrence or existence of a material suspension of or limitation imposed on trading by any Related
Futures or Options Exchange or otherwise in futures or options contracts relating to the Index or any Successor Equity Index on any Related Futures or Options Exchange at any time during the one-hour period that ends at the Close of Trading on that
day, whether by reason of movements in price exceeding limits permitted by the Related Futures or Options Exchange or otherwise. 

  
 5 

	 	(C)	 The occurrence or existence of any event, other than an early closure, that materially disrupts or impairs the
ability of market participants in general to effect transactions in, or obtain market values for, securities that then comprise 20% or more of the level of the Index or any Successor Equity Index on their Relevant Stock Exchanges at any time during
the one-hour period that ends at the Close of Trading on that day. 

  

	 	(D)	 The occurrence or existence of any event, other than an early closure, that materially disrupts or impairs the
ability of market participants in general to effect transactions in, or obtain market values for, futures or options contracts relating to the Index or any Successor Equity Index on any Related Futures or Options Exchange at any time during the
one-hour period that ends at the Close of Trading on that day. 

  

	 	(E)	 The closure on any Exchange Business Day of the Relevant Stock Exchanges on which securities that then
comprise 20% or more of the level of the Index or any Successor Equity Index are traded or any Related Futures or Options Exchange prior to its Scheduled Closing Time unless the earlier closing time is announced by the Relevant Stock Exchange or
Related Futures or Options Exchange, as applicable, at least one hour prior to the earlier of (1) the actual closing time for the regular trading session on such Relevant Stock Exchange or Related Futures or Options Exchange, as applicable, and
(2) the submission deadline for orders to be entered into the Relevant Stock Exchange or Related Futures or Options Exchange, as applicable, system for execution at such actual closing time on that day. 

 

	 	(F)	 The Relevant Stock Exchange for any security underlying the Index or Successor Equity Index or any Related
Futures or Options Exchange fails to open for trading during its regular trading session. 

 For purposes
of determining whether a Market Disruption Event has occurred: 
  

	 	(1)	 the relevant percentage contribution of a security to the level of the Index or any Successor Equity Index
will be based on a comparison of (x) the portion of the level of such Index attributable to that security and (y) the overall level of the Index or Successor Equity Index, in each case immediately before the occurrence of the Market
Disruption Event; 

  

	 	(2)	 the “Close of Trading” on any Trading Day for the Index or any Successor Equity Index means
the Scheduled Closing Time of the Relevant Stock Exchanges with respect to the securities underlying the Index or Successor Equity Index on such Trading Day; provided that, if the actual closing time of the regular trading session of any such
Relevant Stock Exchange is earlier than its Scheduled Closing Time on such Trading Day, then (x) for purposes of clauses (A) and (C) of the definition of “Market Disruption Event” above, with respect to any security
underlying the Index or Successor Equity Index for which such Relevant Stock Exchange is its Relevant Stock Exchange, the “Close of Trading” means such 

  
 6 

	 	 
actual closing time and (y) for purposes of clauses (B) and (D) of the definition of “Market Disruption Event” above, with respect to any futures or options contract
relating to the Index or Successor Equity Index, the “close of trading” means the latest actual closing time of the regular trading session of any of the Relevant Stock Exchanges, but in no event later than the Scheduled Closing Time of
the Relevant Stock Exchanges; 

  

	 	(3)	 the “Scheduled Closing Time” of any Relevant Stock Exchange or Related Futures or Options
Exchange on any Trading Day for the Index or any Successor Equity Index means the scheduled weekday closing time of such Relevant Stock Exchange or Related Futures or Options Exchange on such Trading Day, without regard to after hours or any other
trading outside the regular trading session hours; and 

  

	 	(4)	 an “Exchange Business Day” means any Trading Day for the Index or any Successor Equity Index
on which each Relevant Stock Exchange for the securities underlying the Index or any Successor Equity Index and each Related Futures or Options Exchange are open for trading during their respective regular trading sessions, notwithstanding any such
Relevant Stock Exchange or Related Futures or Options Exchange closing prior to its Scheduled Closing Time. 

 Calculation Agent

 The Calculation Agent will determine whether this Security will be automatically called on any of the Call Dates,
the Call Price, if any, the Redemption Amount and the Ending Level. In addition, the Calculation Agent will (i) determine if adjustments are required to the Closing Level of the Index under the circumstances described in this Security,
(ii) if publication of the Index is discontinued, select a Successor Equity Index or, if no Successor Equity Index is available, determine the Closing Level of the Index under the circumstances described in this Security, and
(iii) determine whether a Market Disruption Event or non-Trading Day has occurred. 
 The Company covenants that, so
long as this Security is Outstanding, there shall at all times be a Calculation Agent (which shall be a broker-dealer, bank or other financial institution) with respect to this Security. 

All determinations made by the Calculation Agent with respect to this Security will be at the sole discretion of the
Calculation Agent and, in the absence of manifest error, will be conclusive for all purposes and binding on the Company and the Holder of this Security. 

Tax Considerations 

The Company agrees, and by acceptance of a beneficial ownership interest in this Security each Holder of this Security will be
deemed to have agreed (in the absence of a statutory, regulatory, administrative or judicial ruling to the contrary), for United States federal income tax purposes to characterize and treat this Security as a prepaid derivative contract that is an
“open transaction.” 

  
 7 

 Redemption and Repayment 

This Security is not subject to repayment at the option of the Holder hereof prior to May 6, 2019. Except as set forth
above under “Automatic Call,” this Security is not subject to redemption prior to May 6, 2019. This Security is not entitled to any sinking fund. 

Acceleration 
 If
an Event of Default, as defined in the Indenture, with respect to this Security shall occur and be continuing, the Redemption Amount (calculated as set forth in the next sentence) of this Security may be declared due and payable in the manner and
with the effect provided in the Indenture. The amount payable to the Holder hereof upon any acceleration permitted under the Indenture will be equal to the Redemption Amount hereof calculated as provided herein as though the date of acceleration was
the Final Calculation Day; provided that if the Closing Level of the Index on the date of acceleration is equal to or greater than the Starting Level, the amount payable on this Security will be calculated using a Call Premium that is prorated to
the date of acceleration. 
  
  

Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions
shall for all purposes have the same effect as if set forth at this place. 
 Unless the certificate of authentication
hereon has been executed by the Trustee referred to on the reverse hereof by manual signature or its duly authorized agent under the Indenture referred to on the reverse hereof by manual signature, this Security shall not be entitled to any benefit
under the Indenture or be valid or obligatory for any purpose. 
 [The remainder of this page has been left intentionally blank] 

  
 8 

 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed
under its corporate seal. 
 DATED:
                                 

 

					
	WELLS FARGO & COMPANY
		
	By:	 	 
		 	
		 	Its:	 	 

 [SEAL] 
  

					
	Attest:	 	 
		 	
		 	Its:	 	 

  

			
	 TRUSTEE’S CERTIFICATE OF

AUTHENTICATION
 This is one of the Securities of the

series designated therein described
 in the within-mentioned Indenture.

	
	 CITIBANK, N.A.,

      as Trustee

		
	By:	 	 
		 	Authorized Signature
	
	OR
	
	 WELLS FARGO BANK, N.A.,

  as Authenticating Agent for the Trustee

		
	By:	 	 
		 	Authorized Signature

  
 9 

 [Reverse of Note] 

WELLS FARGO & COMPANY 

MEDIUM-TERM NOTE, SERIES K 

Due Nine Months or More From Date of Issue 

Principal at Risk Securities Linked to the S&P 500® Index 

due May 6, 2019 

This Security is one of a duly authorized issue of securities of the Company (herein called the
“Securities”), issued and to be issued in one or more series under an indenture dated as of July 21, 1999, as amended or supplemented from time to time (herein called the “Indenture”), between the Company and
Citibank, N.A., as Trustee (herein called the “Trustee,” which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto reference is hereby made for a statement of the
respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities, and of the terms upon which the Securities are, and are to be, authenticated and delivered. This Security is
one of the series of the Securities designated as Medium-Term Notes, Series K, of the Company, which series is limited to an aggregate principal amount or face amount, as applicable, of $25,000,000,000 or the equivalent thereof in one or more
foreign or composite currencies. The amount payable on the Securities of this series may be determined by reference to the performance of one or more equity-, commodity- or currency-based indices, exchange traded funds, securities, commodities,
currencies, statistical measures of economic or financial performance, or a basket comprised of two or more of the foregoing, or any other market measure or may bear interest at a fixed rate or a floating rate. The Securities of this series may
mature at different times, be redeemable at different times or not at all, be repayable at the option of the Holder at different times or not at all and be denominated in different currencies. 

Article Sixteen of the Indenture shall not apply to this Security. 

The Securities are issuable only in registered form without coupons and will be either
(a) book-entry securities represented by one or more Global Securities recorded in the book-entry system maintained by the Depositary or (b) certificated
securities issued to and registered in the names of, the beneficial owners or their nominees. 
 The Company agrees, to the
extent permitted by law, not to voluntarily claim the benefits of any laws concerning usurious rates of interest against a Holder of this Security. 

Modification and Waivers 

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights
and obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the
Securities at the 

  
 10 

 
time Outstanding of all series to be affected, acting together as a class. The Indenture also contains provisions permitting the Holders of a majority in principal amount of the Securities of all
series at the time Outstanding affected by certain provisions of the Indenture, acting together as a class, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with those provisions of the Indenture. Certain
past defaults under the Indenture and their consequences may be waived under the Indenture by the Holders of a majority in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such
series. Solely for the purpose of determining whether any consent, waiver, notice or other action or Act to be taken or given by the Holders of Securities pursuant to the Indenture has been given or taken by the Holders of Outstanding Securities in
the requisite aggregate principal amount, the principal amount of this Security will be deemed to be equal to the amount set forth on the face hereof as the “Face Amount” hereof. Any such consent or waiver by the Holder of this Security
shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or
waiver is made upon this Security. 
 Defeasance 

Section 403 and Article Fifteen of the Indenture and the provisions of clause (ii) of Section 401(1)(B) of the
Indenture, relating to defeasance at any time of (a) the entire indebtedness on this Security and (b) certain restrictive covenants and certain Events of Default, upon compliance by the Company with certain conditions set forth therein,
shall not apply to this Security. The remaining provisions of Section 401 of the Indenture shall apply to this Security. 
 Authorized
Denominations 
 This Security is issuable only in registered form without coupons in denominations of $1,000 or any
amount in excess thereof which is an integral multiple of $1,000. 
 Registration of Transfer 

Upon due presentment for registration of transfer of this Security at the office or agency of the Company in the City of
Minneapolis, Minnesota, a new Security or Securities of this series, with the same terms as this Security, in authorized denominations for an equal aggregate Face Amount will be issued to the transferee in exchange herefor, as provided in the
Indenture and subject to the limitations provided therein and to the limitations described below, without charge except for any tax or other governmental charge imposed in connection therewith. 

This Security is exchangeable for definitive Securities in registered form only if (x) the Depositary notifies the
Company that it is unwilling or unable to continue as Depositary for this Security or if at any time the Depositary ceases to be a clearing agency registered under the Securities Exchange Act of 1934, as amended, and a successor depositary is not
appointed within 90 days after the Company receives such notice or becomes aware of such ineligibility, (y) the Company in its sole discretion determines that this Security shall be exchangeable for definitive Securities in registered form
and notifies the Trustee thereof or (z) an Event of Default with respect to the Securities represented hereby has occurred and is continuing. If this Security is exchangeable pursuant to the preceding sentence, it shall be exchangeable for
definitive Securities in registered 

  
 11 

 
form, having the same date of issuance, Stated Maturity Date and other terms and of authorized denominations aggregating a like amount. 

This Security may not be transferred except as a whole by the Depositary to a nominee of the Depositary or by a nominee of the
Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor of the Depositary or a nominee of such successor. Except as provided above, owners of beneficial interests in this Global
Security will not be entitled to receive physical delivery of Securities in definitive form and will not be considered the Holders hereof for any purpose under the Indenture. 

Prior to due presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company
or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the
contrary. 
 Obligation of the Company Absolute 

No reference herein to the Indenture and no provision of this Security or the Indenture shall alter or impair the obligation
of the Company, which is absolute and unconditional, to pay the Redemption Amount or the Call Price, as applicable, at the times, place and rate, and in the coin or currency, herein prescribed, except as otherwise provided in this Security. 

No Personal Recourse 

No recourse shall be had for the payment of the Redemption Amount or the Call Price, as applicable, or for any claim based
hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or any indenture supplemental thereto, against any incorporator, stockholder, officer or director, as such, past, present or future, of the Company or any successor
corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issuance hereof,
expressly waived and released. 
 Defined Terms 

All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture
unless otherwise defined in this Security. 
 Governing Law 

This Security shall be governed by and construed in accordance with the law of the State of New York, without regard to
principles of conflicts of laws. 

  
 12 

 ABBREVIATIONS 

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they
were written out in full according to applicable laws or regulations: 
  

					
	 TEN COM
	 	  -- 
	 	 as tenants in common

			
	 TEN ENT
	 	  -- 
	 	 as tenants by the entireties

			
	 JT TEN
	 	  -- 
	 	 as joint tenants with right

of survivorship and not
 as
tenants in common

  

									
	 UNIF GIFT MIN ACT
	 	  -- 
	 	 	 	  Custodian 
	 	 
		 		 	(Cust)	 		 	(Minor)

  

	
	Under Uniform Gifts to Minors Act
	
	   

	(State)

 Additional abbreviations may also be used though not in the above list. 

FOR VALUE RECEIVED, the undersigned hereby sell(s) and transfer(s) unto 

 

	
	 Please Insert Social Security or
 Other
Identifying Number of Assignee

	
	   

  
  

 
  
  

 
 (PLEASE
PRINT OR TYPE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF ASSIGNEE)

  
 13 

 the within Security of WELLS FARGO & COMPANY and does hereby irrevocably constitute and
appoint                                      attorney to
transfer the said Security on the books of the Company, with full power of substitution in the premises. 
 Dated:
                                         
        
  

	
	   

  

	
	   

 NOTICE: The signature to this assignment must correspond with the name as written upon the face of the
within instrument in every particular, without alteration or enlargement or any change whatever. 

  
 14EX-10.1

 Exhibit 10.1 

FORM OF 
 REGISTRATION
RIGHTS AGREEMENT 
 BY AND AMONG 

A.M. CASTLE & CO. 

AND 
 THE NOTE HOLDERS
PARTY HERETO 
 DATED AS OF [            ], 2016 

 TABLE OF CONTENTS 

 

							
	 	 	 	  	Page	 
	 1.
	 	DEFINITIONS	  	 	1	  
			
	 2.
	 	REGISTRATION	  	 	5	  
			
	 3.
	 	RELATED OBLIGATIONS	  	 	7	  
			
	 4.
	 	OBLIGATIONS OF THE INVESTORS	  	 	13	  
			
	 5.
	 	EXPENSES OF REGISTRATION	  	 	13	  
			
	 6.
	 	INDEMNIFICATION	  	 	14	  
			
	 7.
	 	CONTRIBUTION	  	 	16	  
			
	 8.
	 	REPORTS UNDER THE EXCHANGE ACT	  	 	17	  
			
	 9.
	 	ASSIGNMENT OF REGISTRATION RIGHTS	  	 	17	  
			
	 10.
	 	AMENDMENT OF REGISTRATION RIGHTS	  	 	17	  
			
	 11.
	 	MISCELLANEOUS	  	 	18	  

  
 i 

 FORM OF REGISTRATION RIGHTS AGREEMENT 

REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of
[            ], 2016, by and among A.M. Castle & Co., a Maryland corporation (the “Company”) and each of the undersigned holders of Notes (as defined below) of the
Company (collectively, the “Note Holders”, and each a “Note Holder”). 
 RECITALS 

A. Pursuant to the terms of those certain Transaction Support Agreements between the Company and certain Note Holders (as may be amended or
supplemented from time to time, the “Support Agreements”), the Company agreed to effect a private exchange (the “Notes Exchange”) in which the Company will issue new 5.25% Convertible Senior Secured Notes due 2019
(the “Notes”) which will, among other things, be convertible into Common Stock (as defined below) (the shares of Common Stock issuable pursuant to the terms of the Notes, including, without limitation, upon conversion or otherwise,
collectively, the “Conversion Shares”), in exchange for the Company’s outstanding 7.00% Convertible Senior Notes due 2017 (the “Old Notes”). 

B. In accordance with the terms of the Support Agreements, the Company has agreed to provide certain registration rights under the Securities
Act of 1933, as amended, and the rules and regulations thereunder (the “Securities Act”). 
 NOW, THEREFORE, in
consideration of the premises and the mutual covenants contained herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the Company and the Note Holders hereby agree as follows: 

AGREEMENT 
 1. DEFINITIONS. 

Capitalized terms used herein and not otherwise defined herein shall have the respective meanings set forth in the Support Agreements. As used
in this Agreement, the following terms shall have the following meanings: 
 “Additional Effective Date” means the date the
Additional Registration Statement is declared effective by the SEC. 
 “Additional Effectiveness Deadline” means the date
which is the earlier of (x) ninety (90) calendar days after the earlier of the Additional Filing Date and the Additional Filing Deadline and (y) the fifth (5th) Business Day after the date the Company is notified (orally or in
writing, whichever is earlier) by the SEC that such Additional Registration Statement will not be reviewed or will not be subject to further review; provided, however, that if the Additional Effectiveness Deadline falls on a Saturday, Sunday or
other day that the SEC is closed for business, the Additional Effectiveness Deadline shall be extended to the next Business Day on which the SEC is open for business. 

  
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 “Additional Filing Date” means the date on which the Additional Registration
Statement is filed with the SEC. 
 “Additional Filing Deadline” means if Additional Registrable Securities are required to
be included in any Additional Registration Statement, the later of (i) the date sixty (60) days after the date substantially all of the Registrable Securities registered under the immediately preceding Registration Statement are sold;
provided, however, that if such date occurs at a time when the Company is not able to file an Additional Registration Statement because of its inability due to SEC requirements to file such registration statement with financial statements for the
nine months ended September 30, the Additional Filing Deadline shall mean the third Business Day following the earlier of the date on which the Company files or the date on which it is required to file its Annual Report on Form 10-K for the
applicable year; and (ii) the date six (6) months from the Initial Effective Date or the most recent Additional Effective Date, as applicable. 

“Additional Registrable Securities” means (i) any Conversion Shares issuable in connection with any payments made in
respect of any premium, make-whole premium or fundamental change not previously included on a Registration Statement and (ii) any capital stock of the Company issued or issuable with respect to the Notes or the Conversion Shares, as applicable,
as a result of any stock dividend, stock split, combination, reorganization and similar event or otherwise, without regard to any limitations on conversion, amortization and/or redemption of the Notes. 

“Additional Registration Statement” means a registration statement or registration statements of the Company filed under the
Securities Act covering the resale of any Additional Registrable Securities. 
 “Additional Required Registration Amount”
means any Additional Registrable Securities not previously included on a Registration Statement, all subject to adjustment as provided in Section 2(e). 

“Allowable Grace Period” has the meaning ascribed to such term in Section 3(q). 

“Blue Sky Filing” has the meaning ascribed to such term in Section 6(a). 

“Business Day” means any day other than Saturday, Sunday or any other day on which either commercial banks in the City of New
York are authorized or required by law to remain closed or the New York Stock Exchange, Inc. is not open for a full business day. 

“Claims” has the meaning ascribed to such term in Section 6(a). 

“Common Stock” means (i) the common stock of the Company, par value $0.01 per share, as it exists on the date of this
Agreement and any shares of any class or classes of capital stock of the Company resulting from any reclassification or reclassifications thereof, or, in the event of a merger, consolidation or other similar transaction involving the Company that is
otherwise permitted hereunder in which the Company is not the surviving corporation, the common stock, common equity interests, ordinary shares or depositary shares or other certificates representing common equity interests of such surviving
corporation or its direct or indirect parent corporation, and which have no preference in respect of dividends or of amounts 

  
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payable in the event of any voluntary or involuntary liquidation, dissolution or winding-up of the Company and which are not subject to redemption by the Company; provided, however, that if at
any time there shall be more than one such resulting class, the shares of each such class then so issuable on conversion of Notes shall be substantially in the proportion which the total number of shares of such class resulting from all such
reclassifications bears to the total number of shares of all such classes resulting from all such reclassifications. 

“Company” has the meaning ascribed to such term in the preamble. 

“Conversion Shares” has the meaning ascribed to such term in the recitals. 

“Effective Date” means the Initial Effective Date and the Additional Effective Date, as applicable. 

“Effectiveness Deadline” means the Initial Effectiveness Deadline and the Additional Effectiveness Deadline, as applicable.

 “Effectiveness Failure” has the meaning ascribed to such term in Section 2(f). 

“Eligible Market” means the Principal Market, The NYSE MKT LLC, The NASDAQ Global Select, or The NASDAQ Global Market. 

“Filing Deadline” means the Initial Filing Deadline and the Additional Filing Deadline, as applicable. 

“Grace Period” has the meaning ascribed to such term in Section 3(q). 

“Indemnified Damages” has the meaning ascribed to such term in Section 6(a). 

“Indemnified Party” has the meaning ascribed to such term in Section 6(b). 

“Indemnified Person” has the meaning ascribed to such term in Section 6(a). 

“Initial Effective Date” means the date that the Initial Registration Statement has been declared effective by the SEC. 

“Initial Effectiveness Deadline” means the date which is the earlier of (x) June 30, 2016 and (y) the fifth
(5th) Business Day after the date the Company is notified (orally or in writing, whichever is earlier) by the SEC that such Initial Registration Statement will not be reviewed or will not be subject to further review; provided, however, that if
the Initial Effectiveness Deadline falls on a Saturday, Sunday or other day that the SEC is closed for business, the Initial Effectiveness Deadline shall be extended to the next Business Day on which the SEC is open for business. 

“Initial Filing Date” means the date on which the Initial Registration Statement is filed with the SEC. 

  
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 “Initial Filing Deadline” means the date which is five (5) Business Days
from the date that the Company files its Annual Report on Form 10-K for the fiscal year ended December 31, 2015. 
 “Initial
Registrable Securities” means (i) the Conversion Shares issued or issuable pursuant to the terms of the Notes and (ii) any capital stock of the Company issued or issuable with respect to the Notes or the Conversion Shares, as a
result of any stock split, stock dividend, recapitalization, exchange or similar event or otherwise, in each case without regard to any limitations on conversion, amortization and/or redemption of the Notes. 

“Initial Registration Statement” means a registration statement or registration statements of the Company filed under the
Securities Act covering the resale of the Initial Registrable Securities. 
 “Initial Required Registration Amount” means
125% of the number of Conversion Shares issuable pursuant to the Notes (without regard to any payments made in respect of any premium, make-whole premium or fundamental change) as of the Trading Day immediately preceding the applicable date of
determination and all subject to adjustment as provided in Section 2(e), without regard to any limitations on conversion, amortization and/or redemption of the Notes. 

“Inspectors” has the meaning ascribed to such term in Section 3(h). 

“Investor” means any Note Holder or any transferee or assignee thereof to whom any Note Holder assigns its rights under this
Agreement and who agrees to become bound by the provisions of this Agreement in accordance with Section 9 and any transferee or assignee thereof to whom a transferee or assignee assigns its rights under this Agreement and who agrees to become
bound by the provisions of this Agreement in accordance with Section 9. 
 “Legal Counsel” has the meaning ascribed to
such term in Section 2(c). 
 “Notes” has the meaning ascribed to such term in the recitals. 

“Notes Exchange” has the meaning ascribed to such term in the recitals. 

“Person” means an individual, a limited liability company, a partnership, a joint venture, a corporation, a trust, an
unincorporated organization and a government or any department or agency thereof. 
 “Principal Market” means The New York
Stock Exchange. 
 “Records” has the meaning ascribed to such term in Section 3(h). 

“register,” “registered,” and “registration” refer to a registration effected by preparing
and filing one or more Registration Statements in compliance with the Securities Act and pursuant to Rule 415, and the declaration or ordering of effectiveness of such Registration Statement(s) by the SEC. 

  
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 “Registrable Securities” means the Initial Registrable Securities and the
Additional Registrable Securities. 
 “Registration Delay Payments” has the meaning ascribed to such term in
Section 2(f). 
 “Registration Period” has the meaning ascribed to such term in Section 3(a). 

“Registration Statement” means the Initial Registration Statement and the Additional Registration Statement, as applicable.

 “Required Holders” means the holders of at least a majority of the Registrable Securities. 

“Required Registration Amount” means either the Initial Required Registration Amount or the Additional Required Registration
Amount, as applicable. 
 “Rule 144” has the meaning ascribed to such term in Section 8. 

“Rule 415” means Rule 415 promulgated under the Securities Act or any successor rule providing for offering securities on a
continuous or delayed basis. 
 “SEC” means the United States Securities and Exchange Commission. 

“Securities Act” has the meaning ascribed to such term in the recitals. 

“Settlement Date” means the date on which the Notes Exchange is settled in accordance with the terms of the Support
Agreements. 
 “Support Agreements” has the meaning ascribed to such term in the recitals. 

“Violations” has the meaning ascribed to such term in Section 6(a). 

2. REGISTRATION. 
 (a) Initial
Mandatory Registration. The Company shall prepare, and, as soon as practicable but in no event later than the Initial Filing Deadline, file with the SEC the Initial Registration Statement on Form S-3 covering the resale of all of the Initial
Registrable Securities. In the event that Form S-3 is unavailable for such a registration, the Company shall use such other appropriate form as is available for such a registration, subject to the provisions of Section 2(d). The Initial
Registration Statement prepared pursuant hereto shall register for resale at least the number of shares of Common Stock equal to the Initial Required Registration Amount determined as of the date the Business Day prior to the date the Initial
Registration Statement is initially filed with the SEC, subject to adjustment as provided in Section 2(e). The Company shall use its commercially reasonable efforts to have the Initial Registration Statement declared effective by the SEC as
soon as practicable, but in no event later than the Initial Effectiveness Deadline. By the end of the Business Day following the Initial Effective Date, the Company shall file with the SEC in accordance with Rule 424 under the Securities Act the
final prospectus to be used in connection with sales pursuant to such Initial Registration Statement. 

  
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 (b) Additional Mandatory Registrations. The Company shall prepare, and, as soon as
practicable but in no event later than the Additional Filing Deadline, file with the SEC an Additional Registration Statement on Form S-3 covering the resale of all of the Additional Registrable Securities not previously registered on an Additional
Registration Statement hereunder. In the event that Form S-3 is unavailable for such a registration, the Company shall use such other appropriate form as is available for such a registration, subject to the provisions of Section 2(d). Each
Additional Registration Statement prepared pursuant hereto shall register for resale at least that number of shares of Common Stock equal to the Additional Required Registration Amount determined as of the date such Additional Registration Statement
is initially filed with the SEC, subject to adjustment as provided in Section 2(e). The Company shall use its commercially reasonable efforts to have each Additional Registration Statement declared effective by the SEC as soon as practicable,
but in no event later than the Additional Effectiveness Deadline. By the end of the Business Day following the Additional Effective Date, the Company shall file with the SEC in accordance with Rule 424 under the Securities Act the final prospectus
to be used in connection with sales pursuant to such Additional Registration Statement. 
 (c) Legal Counsel. Subject to
Section 5 hereof, the Required Holders shall have the right to select one legal counsel to review and oversee any registration pursuant to this Section 2 (“Legal Counsel”), which shall be Paul, Weiss, Rifkind,
Wharton & Garrison LLP or such other counsel as thereafter designated by the Required Holders. The Company and Legal Counsel shall reasonably cooperate with each other in performing the Company’s obligations under this Agreement.

 (d) Ineligibility for Form S-3. In the event that Form S-3 is not available for the registration of the resale of Registrable
Securities hereunder, the Company shall (i) register the resale of the Registrable Securities on Form S-1 or another appropriate form and (ii) undertake to register the Registrable Securities on Form S-3 as soon as such form is available,
provided that the Company shall use its commercially reasonable efforts to maintain the effectiveness of the Registration Statement then in effect until such time as a Registration Statement on Form S-3 covering the Registrable Securities has been
declared effective by the SEC. 
 (e) Sufficient Number of Shares Registered. In the event the number of shares available under a
Registration Statement filed pursuant to Section 2(a) or Section 2(b) is insufficient to cover the Required Registration Amount of Registrable Securities required to be covered by such Registration Statement, the Company shall file a new
Registration Statement (on the short form available therefor, if applicable) so as to cover at least the Required Registration Amount as of the Trading Day immediately preceding the date of the filing of such new Registration Statement, in each
case, as soon as practicable, but in any event not later than thirty (30) days after the necessity therefor arises. The Company shall use its commercially reasonable efforts to cause such new Registration Statement to become effective as soon
as practicable following the filing thereof. For purposes of the foregoing provision, the number of shares available under a Registration Statement shall be deemed “insufficient to cover all of the Registrable Securities” if at any time
the number of shares of Common Stock available for resale under the Registration Statement is less than the Required Registration Amount. The calculation set forth in the foregoing sentence shall be made without regard to any limitations on the
conversion, amortization and/or redemption of the Notes and such calculation shall assume (i)

  
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that the Notes are then convertible in full into shares of Common Stock at the then prevailing Conversion Rate and (ii) the initial outstanding principal amount of the Notes remains
outstanding through the scheduled Maturity Date and no redemptions of the Notes occur prior to the scheduled Maturity Date. 
 (f) Effect
of Failure to Obtain Effectiveness of Registration Statement. If the Initial Registration Statement covering all of the Registrable Securities is not declared effective by the SEC on or before the applicable Initial Effectiveness Deadline, (an
“Effectiveness Failure”), then, as partial relief for the damages to any holder by reason of any such delay in or reduction of its ability to sell the underlying shares of Common Stock, the Company shall pay to each Investor an
amount in cash equal to (i) five percent (5.00%) of the aggregate principal amount of such Investor’s Notes, payable on the next regularly scheduled interest payment date following an Effectiveness Failure, and (ii) an additional
payment of one half of one percent (0.50%) for each period of thirty (30) days following an Effectiveness Failure (pro rated for periods totaling less than thirty days), payable on the next regularly scheduled interest payment date following
the thirtieth day following the date of an Effectiveness Failure and every thirtieth day thereafter until such Effectiveness Failure is cured. Notwithstanding anything to the contrary contained herein, (i) no Registration Delay Payment (a
“Registration Delay Payment”) shall be payable with respect to any Notes which shall not have been issued or no longer outstanding as of the date on which the computation is being made and (ii) if an Investor would be required
to be named as an “underwriter” in the Registration Statement by the SEC and such Investor elects, pursuant to Section 3(r) below not to include any Registrable Securities of such Investor in the Registration Statement, no
Registration Delay Payments shall accrue with respect to such Registrable Securities of such Investor. 
 3. RELATED OBLIGATIONS. 

At such time as the Company is obligated to file a Registration Statement with the SEC pursuant to Section 2(a), 2(b), 2(d) or 2(e), the
Company will use its commercially reasonable efforts to effect the registration of the Registrable Securities in accordance with the intended method of disposition thereof and, pursuant thereto, the Company shall have the following obligations: 

(a) The Company shall promptly prepare and file with the SEC a Registration Statement with respect to the Registrable Securities and use its
commercially reasonable efforts to cause such Registration Statement relating to the Registrable Securities to become effective as soon as practicable after such filing (but in no event later than the Effectiveness Deadline). The Company shall keep
each Registration Statement effective pursuant to Rule 415 at all times until the earlier of (i) the date as of which the Investors may sell all of the Registrable Securities covered by such Registration Statement without restriction or
limitation pursuant to Rule 144 and without the requirement to be in compliance with Rule 144(c)(1) (or any successor thereto) promulgated under the Securities Act or (ii) the date on which the Investors shall have sold all of the Registrable
Securities covered by such Registration Statement (the “Registration Period”). Each Registration Statement (including any amendments or supplements thereto and prospectuses contained therein) shall not contain any 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 prospectuses, in the light of the circumstances in which they were made) not

  
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misleading. The term “commercially reasonable efforts” shall mean, among other things, that the Company shall submit to the SEC, within five (5) Business Days after the later of
the date that (i) the Company is advised by the SEC that no review of a particular Registration Statement will be made by the staff of the SEC or that the staff has no further comments on a particular Registration Statement, as the case may be,
and (ii) the approval of Legal Counsel pursuant to Section 3(c) (which approval is immediately sought), a request for acceleration of effectiveness of such Registration Statement to a time and date not later than two (2) Business Days
after the submission of such request. The Company shall respond in writing to comments made by the SEC in respect of a Registration Statement as soon as practicable. 

(b) The Company shall prepare and file with the SEC such amendments (including post-effective amendments) and supplements to a Registration
Statement and the prospectus used in connection with such Registration Statement, which prospectus is to be filed pursuant to Rule 424 promulgated under the Securities Act, as may be necessary to keep such Registration Statement effective at all
times during the Registration Period, and, during such period, comply with the provisions of the Securities Act with respect to the disposition of all Registrable Securities of the Company covered by such Registration Statement until such time as
all of such Registrable Securities shall have been disposed of in accordance with the intended methods of disposition by the seller or sellers thereof as set forth in such Registration Statement. In the case of amendments and supplements to a
Registration Statement which are required to be filed pursuant to this Agreement (including pursuant to this Section 3(b)) by reason of the Company filing a report on Form 10-K, Form 10-Q, Form 8-K or any analogous report under the Exchange
Act, the Company shall have incorporated such report by reference into such Registration Statement, if applicable, or shall file such amendments or supplements with the SEC on the same day on which the Exchange Act report is filed which created the
requirement for the Company to amend or supplement such Registration Statement. 
 (c) The Company shall (A) permit Legal Counsel to
review and comment upon (i) a Registration Statement at least two (2) Business Days prior to its filing with the SEC and (ii) all amendments and supplements to all Registration Statements (except for Annual Reports on Form 10-K,
Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, and any similar or successor reports) within a reasonable number of days prior to their filing with the SEC, and (B) not file any Registration Statement or any such amendment or
supplement thereto in a form to which Legal Counsel reasonably objects. The Company shall not submit a request for acceleration of the effectiveness of a Registration Statement or any amendment or supplement thereto without the prior approval of
Legal Counsel, which consent shall not be unreasonably withheld. The Company shall furnish to Legal Counsel, without charge, (i) copies of any correspondence from the SEC or the staff of the SEC to the Company or its representatives relating to
any Registration Statement, (ii) promptly after the same is prepared and filed with the SEC, one copy of any Registration Statement and any amendment(s) thereto, including financial statements and schedules, all documents incorporated therein
by reference, if requested by an Investor, and all exhibits and (iii) upon the effectiveness of any Registration Statement, one copy of the prospectus included in such Registration Statement and all amendments and supplements thereto. The
Company shall reasonably cooperate with Legal Counsel in performing the Company’s obligations pursuant to this Section 3. 

  
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 (d) The Company shall upon request furnish to each Investor whose Registrable Securities are
included in any Registration Statement, without charge, (i) promptly after the same is prepared and filed with the SEC, at least one copy of such Registration Statement and any amendment(s) thereto, including financial statements and schedules,
all documents incorporated therein by reference, if requested by an Investor, all exhibits and each preliminary prospectus, (ii) upon the effectiveness of any Registration Statement, ten (10) copies of the prospectus included in such
Registration Statement and all amendments and supplements thereto (or such other number of copies as such Investor may reasonably request) and (iii) such other documents, including copies of any preliminary or final prospectus, as such Investor
may reasonably request from time to time in order to facilitate the disposition of the Registrable Securities owned by such Investor; provided, that any such item which is available on the SEC’s EDGAR System (or successor thereto) need not be
furnished in physical form. 
 (e) The Company shall use its commercially reasonable efforts to (i) register and qualify, unless an
exemption from registration and qualification applies, the resale by Investors of the Registrable Securities covered by a Registration Statement under such other securities or “blue sky” laws of such jurisdictions in the United States as
the Required Holders may reasonably request, (ii) prepare and file in those jurisdictions such amendments (including post-effective amendments) and supplements to such registrations and qualifications as may be necessary to maintain the
effectiveness thereof during the Registration Period, (iii) take such other actions as may be necessary to maintain such registrations and qualifications in effect at all times during the Registration Period, and (iv) take all other
actions reasonably necessary or advisable to qualify the Registrable Securities for sale in such jurisdictions; provided, however, that the Company shall not be required in connection therewith or as a condition thereto to (x) qualify to do
business in any jurisdiction where it would not otherwise be required to qualify but for this Section 3(e), (y) subject itself to general taxation in any such jurisdiction, or (z) file a general consent to service of process in any
such jurisdiction. The Company shall promptly notify Legal Counsel and each Investor who holds Registrable Securities of the receipt by the Company of any notification with respect to the suspension of the registration or qualification of any of the
Registrable Securities for sale under the securities or “blue sky” laws of any jurisdiction in the United States or its receipt of actual notice of the initiation or threatening of any proceeding for such purpose. 

(f) The Company shall notify Legal Counsel and each Investor in writing (which may be by email) of the happening of any event, as promptly as
practicable after becoming aware of such event, as a result of which the prospectus included in a Registration Statement, as then in effect, includes an untrue statement of a material fact or omission to state a material fact required to be stated
therein or necessary to make the statements therein, in the light of the circumstances under which they were made, not misleading (provided that in no event shall such notice contain any material, nonpublic information), and, subject to
Section 3(q), promptly prepare a supplement or amendment to such Registration Statement to correct such untrue statement or omission, and upon request deliver ten (10) copies of such supplement or amendment to Legal Counsel and each
Investor (or such other number of copies as Legal Counsel or such Investor may reasonably request) provided, that any such item which is available on the SEC’s EDGAR System (or successor thereto) need not be furnished in physical form. The
Company shall also promptly notify Legal Counsel in writing (which may be by email) (i) when a prospectus or any prospectus supplement or post-effective amendment has been filed, and when a Registration

  
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Statement or any post-effective amendment has become effective (notification of such effectiveness shall be delivered to Legal Counsel by facsimile or email on the same day of such
effectiveness), (ii) of any request by the SEC for amendments or supplements to a Registration Statement or related prospectus or related information, and (iii) of the Company’s reasonable determination that a post-effective amendment
to a Registration Statement would be appropriate. By the end of the Business Day following the date any post-effective amendment has become effective, the Company shall file with the SEC in accordance with Rule 424 under the Securities Act the final
prospectus to be used in connection with sales pursuant to such Registration Statement. 
 (g) The Company shall use its commercially
reasonable efforts to prevent the issuance of any stop order or other suspension of effectiveness of a Registration Statement, or the suspension of the qualification of any of the Registrable Securities for sale in any jurisdiction and, if such an
order or suspension is issued, to obtain the withdrawal of such order or suspension as early as is reasonably practicable and to notify Legal Counsel and each Investor who holds Registrable Securities being sold of the issuance of such order and the
resolution thereof or its receipt of actual notice of the initiation or threat of any proceeding for such purpose. 
 (h) If any Investor is
required under applicable securities laws to be described in the Registration Statement as an underwriter or an Investor believes that it could reasonably be deemed to be an underwriter of Registrable Securities, the Company shall make available for
inspection by (i) such Investor, (ii) Legal Counsel and (iii) one firm of accountants or other agents retained by the Investors (collectively, the “Inspectors”), all pertinent financial and other records, and
pertinent corporate documents and properties of the Company (collectively, the “Records”), as shall be reasonably deemed necessary by each Inspector, and cause the Company’s officers, directors and employees to supply all
information which any Inspector may reasonably request; provided, however, that each Inspector shall agree to hold in strict confidence and shall not make any disclosure (except to an Investor) or use of any Record or other information which the
Company determines to be confidential, and of which determination the Inspectors are so notified, unless (a) the disclosure of such Records is necessary to avoid or correct a misstatement or omission in any Registration Statement or is
otherwise required under the Securities Act, (b) the release of such Records is ordered pursuant to a final, non-appealable subpoena or order from a court or government body of competent jurisdiction, or (c) the information in such Records
has been made generally available to the public other than by disclosure in violation of this Agreement. Each Investor agrees that it shall, upon learning that disclosure of such Records is sought in or by a court or governmental body of competent
jurisdiction or through other means, give prompt notice to the Company and allow the Company, at its expense, to undertake appropriate action to prevent disclosure of, or to obtain a protective order for, the Records deemed confidential. Nothing
herein (or in any other confidentiality agreement between the Company and any Investor) shall be deemed to limit the Investors’ ability to sell Registrable Securities in a manner which is otherwise consistent with applicable laws and
regulations. 

  
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 (i) The Company shall hold in confidence and not make any disclosure of information concerning an
Investor provided to the Company unless (i) disclosure of such information is necessary to comply with federal or state securities laws, (ii) the disclosure of such information is necessary to avoid or correct a misstatement or omission in
any Registration Statement, (iii) the release of such information is ordered pursuant to a subpoena or other final, non-appealable order from a court or governmental body of competent jurisdiction, or (iv) such information has been made
generally available to the public other than by disclosure in violation of this Agreement or any other agreement. The Company agrees that it shall, upon learning that disclosure of such information concerning an Investor is sought in or by a court
or governmental body of competent jurisdiction or through other means, give prompt written notice to such Investor and allow such Investor, at the Investor’s expense, to undertake appropriate action to prevent disclosure of, or to obtain a
protective order for, such information. 
 (j) The Company shall use its commercially reasonable efforts either to (i) cause all of the
Registrable Securities covered by a Registration Statement to be listed on each securities exchange on which securities of the same class or series issued by the Company are then listed, if any, if the listing of such Registrable Securities is then
permitted under the rules of such exchange or (ii) secure the inclusion for quotation of all of the Registrable Securities on The Principal Market or (iii) if, despite the Company’s commercially reasonable efforts, the Company is
unsuccessful in satisfying the preceding clauses (i) and (ii), to secure the inclusion for quotation on another Eligible Market for such Registrable Securities. The Company shall pay all fees and expenses in connection with satisfying its
obligation under this Section 3(j). 
 (k) The Company shall cooperate with the Investors who hold Registrable Securities being offered
and, to the extent applicable, facilitate the timely preparation and delivery of certificates (not bearing any restrictive legend if such shares are sold pursuant to a Registration Statement to a person who is not an affiliate of the Company)
representing the Registrable Securities to be offered pursuant to a Registration Statement and enable such certificates to be in such denominations or amounts, as the case may be, as the Investors may reasonably request and registered in such names
as the Investors may request. 
 (l) If requested by an Investor, the Company shall as soon as practicable (i) incorporate in a
prospectus supplement or post-effective amendment such information as an Investor reasonably requests to be included therein relating to the sale and distribution of Registrable Securities, including, without limitation, information with respect to
the number of Registrable Securities being offered or sold, the purchase price being paid therefor and any other terms of the offering of the Registrable Securities to be sold in such offering; (ii) make all required filings of such prospectus
supplement or post-effective amendment after being notified of the matters to be incorporated in such prospectus supplement or post-effective amendment; and (iii) supplement or make amendments to any Registration Statement if reasonably
requested by an Investor holding any Registrable Securities. 
 (m) The Company shall use its commercially reasonable efforts to cause the
Registrable Securities covered by a Registration Statement to be registered with or approved by such other governmental agencies or authorities as may be necessary to consummate the disposition of such Registrable Securities. 

(n) The Company shall make generally available to its security holders as soon as practical, but not later than ninety (90) days after the
close of the period covered thereby, an earnings statement (in form complying with, and in the manner provided by, the provisions of Rule 158 under the Securities Act) covering a twelve-month period beginning not later than the first day of the
Company’s fiscal quarter next following the applicable Effective Date of a Registration Statement. 

  
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 (o) The Company shall otherwise use its commercially reasonable efforts to comply with all
applicable rules and regulations of the SEC in connection with any registration hereunder. 
 (p) Within two (2) Business Days after a
Registration Statement which covers Registrable Securities is ordered effective by the SEC, the Company shall deliver, and shall cause legal counsel for the Company to deliver, to the transfer agent for such Registrable Securities (with copies to
the Investors whose Registrable Securities are included in such Registration Statement) confirmation that such Registration Statement has been declared effective by the SEC. 

(q) Notwithstanding anything to the contrary herein, at any time after the Effective Date, the Company may 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 Board of Directors of the Company and its counsel, in the best interest of the Company and, in the opinion of counsel to the
Company, otherwise required (a “Grace Period”); provided, that the Company shall promptly (i) notify the Investors in writing (which may be by email) of the existence of material, non-public information giving rise to a Grace
Period (provided that in each notice the Company will not disclose the content of such material, non-public information to the Investors) and the date on which the Grace Period will begin, and (ii) notify the Investors in writing (which may be
by email) of the date on which the Grace Period ends; and, provided further, that no Grace Period shall exceed fifteen (15) consecutive Trading Days and during any three hundred sixty five (365) day period such Grace Periods shall not
exceed an aggregate of sixty (60) Trading Days and the first day of any Grace Period must be at least five (5) Trading Days after the last day of any prior Grace Period (each, an “Allowable Grace Period”). For purposes of
determining the length of a Grace Period above, the Grace Period shall begin on and include the date the Investors receive the notice referred to in clause (i) and shall end on and include the later of the date the Investors receive the notice
referred to in clause (ii) and the date referred to in such notice. The provisions of Section 3(g) hereof shall not be applicable during the period of any Allowable Grace Period. Upon expiration of the Grace Period, the Company shall again
be bound by the first sentence of Section 3(f) with respect to the information giving rise thereto unless such material, non-public information is no longer applicable. 

(r) Neither the Company nor any Subsidiary or affiliate thereof shall identify any Investor as an “underwriter” in any public
disclosure or filing with the SEC, the Principal Market or any Eligible Market without the prior written consent of such Investor (it being understood, that if the Company is required to name such Investor as an “underwriter” in such
Registration Statement by the SEC (after a good faith discussion with the SEC to lift such requirement, including, without limitation, any reduction in the number of Registrable Securities of such Investor to be registered on such Registration
Statement (to the extent necessary to lift such requirement)), such Investor shall have the option of electing to exclude all such Registrable Securities from such Registration Statement or to be named as an “underwriter” in such
Registration Statement”). 

  
 12 

 (s) Neither the Company nor any of its Subsidiaries has entered, as of the date hereof, nor shall
the Company or any of its Subsidiaries, on or after the date of this Agreement, enter into any agreement with respect to its securities, that would have the effect of impairing the rights granted to the Investor in this Agreement or otherwise
conflicts with the provisions hereof. 
 4. OBLIGATIONS OF THE INVESTORS. 

(a) At least three (3) Business Days prior to the first anticipated Filing Date of a Registration Statement, the Company shall notify each
Investor in writing (which may be by email) of the information the Company requires from each such Investor if such Investor elects to have any of such Investor’s Registrable Securities included in such Registration Statement. It shall be a
condition precedent to the obligations of the Company to complete any registration pursuant to this Agreement with respect to the Registrable Securities of a particular Investor that such Investor shall furnish 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 and maintain the effectiveness of the registration of such Registrable
Securities and shall execute such documents in connection with such registration as the Company may reasonably request. 
 (b) Each Investor,
by such Investor’s 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 any Registration Statement hereunder, unless such Investor
has notified the Company in writing (which may be by email) of such Investor’s election to exclude all of such Investor’s Registrable Securities from such Registration Statement. 

(c) Each Investor agrees that, upon receipt of any notice from the Company of the happening of any event of the kind described in
Section 3(g) or the first sentence of Section 3(f), such Investor will immediately discontinue disposition of Registrable Securities pursuant to any Registration Statement(s) covering such Registrable Securities until such Investor’s
receipt of copies of the supplemented or amended prospectus as contemplated by Section 3(g) or the first sentence of Section 3(f) or receipt of notice that no supplement or amendment is required. Notwithstanding anything to the contrary,
the Company shall cause its transfer agent to deliver unlegended shares of Common Stock to a transferee of an Investor in accordance with the terms of the Support Agreement in connection with any sale of Registrable Securities with respect to which
an Investor has entered into a contract for sale prior to the Investor’s receipt of a notice from the Company of the happening of any event of the kind described in Section 3(g) or the first sentence of Section 3(f) and for which the
Investor has not yet settled. 
 (d) Each Investor covenants and agrees that it will comply with the prospectus delivery requirements of the
Securities Act as applicable to it or an exemption therefrom in connection with sales of Registrable Securities pursuant to the Registration Statement. 

5. EXPENSES OF REGISTRATION. All reasonable expenses, other than underwriting discounts and commissions, incurred in connection with registrations,
filings or qualifications pursuant to Sections 2 and 3, including, without limitation, all registration, listing and qualifications fees, printers and accounting fees, and fees and disbursements of counsel for the Company shall be paid by the
Company. 

  
 13 

 6. INDEMNIFICATION. 

In the event any Registrable Securities are included in a Registration Statement under this Agreement: 

(a) To the fullest extent permitted by law, the Company will, and hereby does, indemnify, hold harmless and defend each Investor, the
directors, officers, partners, members, employees, agents, representatives of, and each Person, if any, who controls any Investor within the meaning of the Securities Act or the Exchange Act (each, an “Indemnified Person”), against
any losses, claims, damages, liabilities, judgments, fines, penalties, charges, costs, reasonable attorneys’ fees, amounts paid in settlement or expenses, joint or several (collectively, “Claims”), incurred in investigating,
preparing or defending any action, claim, suit, inquiry, proceeding, investigation or appeal taken from the foregoing by or before any court or governmental, administrative or other regulatory agency, body or the SEC, whether pending or threatened,
whether or not an indemnified party is or may be a party thereto (“Indemnified Damages”), to which any of them may become subject insofar as such Claims (or actions or proceedings, whether commenced or threatened, in respect
thereof) arise out of or are based upon: (i) any untrue statement or alleged untrue statement of a material fact in a Registration Statement or any post-effective amendment thereto or in any filing made in connection with the qualification of
the offering under the securities or other “blue sky” laws of any jurisdiction in which Registrable Securities are offered (“Blue Sky Filing”), or the omission or alleged omission to state a material fact required to be
stated therein or necessary to make the statements therein not misleading, (ii) any untrue statement or alleged untrue statement of a material fact contained in any preliminary prospectus if used prior to the effective date of such Registration
Statement, or contained in the final prospectus (as amended or supplemented, if the Company files any amendment thereof or supplement thereto with the SEC) or the omission or alleged omission to state therein any material fact necessary to make the
statements made therein, in light of the circumstances under which the statements therein were made, not misleading, (iii) any violation or alleged violation by the Company of the Securities Act, the Exchange Act, any other law, including,
without limitation, any state securities law, or any rule or regulation thereunder relating to the offer or sale of the Registrable Securities pursuant to a Registration Statement or (iv) any violation of this Agreement (the matters in the
foregoing clauses (i) through (iv) being, collectively, “Violations”). Subject to Section 6(c), the Company shall reimburse the Indemnified Persons, promptly as such expenses are incurred and are due and payable, for
any legal fees or other reasonable expenses incurred by them in connection with investigating or defending any such Claim. Notwithstanding anything to the contrary contained herein, the indemnification agreement contained in this Section 6(a):
(i) shall not apply to a Claim by an Indemnified Person arising out of or based upon a Violation which occurs in reliance upon and in conformity with information furnished in writing to the Company by such Indemnified Person for such
Indemnified Person expressly for use in connection with the preparation of the Registration Statement or any such amendment thereof or supplement thereto, if such prospectus was timely made available by the Company pursuant to Section 3(d);
(ii) shall not apply to expenses or damages which arise out of an Indemnified Person’s failure to send or give a copy of the final prospectus, as the same may be then supplemented or amended, within the time required by the Securities Act
to the Person asserting the existence of an untrue statement or alleged untrue statement or omission or alleged omition at or prior to the written confirmation of the sale of Registrable Securities to such Person if such statement or omission was
corrected in such final 

  
 14 

 
prospectus or an amendment or supplement thereto; and (iii) shall not apply to amounts paid in settlement of any Claim if such settlement is effected without the prior written consent of the
Company, which consent shall not be unreasonably withheld or delayed. Such indemnity shall remain in full force and effect regardless of any investigation made by or on behalf of the Indemnified Person and shall survive the transfer of any of the
Registrable Securities by any of the Investors pursuant to Section 9. 
 (b) In connection with any Registration Statement in which an
Investor is participating, each such Investor agrees to severally and not jointly indemnify, hold harmless and defend, to the same extent and in the same manner as is set forth in Section 6(a), the Company, each of its directors, each of its
officers who signs the Registration Statement and each Person, if any, who controls the Company within the meaning of the Securities Act or the Exchange Act (each, an “Indemnified Party”), against any Claim or Indemnified Damages to
which any of them may become subject, under the Securities Act, the Exchange Act or otherwise, insofar as such Claim or Indemnified Damages arise out of or are based upon any Violation, in each case to the extent, and only to the extent, that such
Violation occurs in reliance upon and in conformity with written information furnished to the Company by such Investor expressly for use in connection with such Registration Statement; and, subject to Section 6(c), such Investor shall reimburse
the Indemnified Party for any legal or other expenses reasonably incurred by an Indemnified Party in connection with investigating or defending any such Claim; provided, however, that the Investor shall be liable under this Section 6(b) for
only that amount of a Claim or Indemnified Damages as does not exceed the net proceeds to such Investor as a result of the sale of Registrable Securities pursuant to such Registration Statement. Such indemnity shall remain in full force and effect
regardless of any investigation made by or on behalf of such Indemnified Party and shall survive the transfer of the Registrable Securities by the Investors pursuant to Section 9. 

(c) Promptly after receipt by an Indemnified Person or Indemnified Party under this Section 6 of notice of the commencement of any action
or proceeding (including any governmental action or proceeding) involving a Claim, such Indemnified Person or Indemnified Party shall, if a Claim in respect thereof is to be made against any indemnifying party under this Section 6, deliver to
the indemnifying party a written notice of the commencement thereof, and the indemnifying party shall have the right to participate in, and, to the extent the indemnifying party so desires, jointly with any other indemnifying party similarly
noticed, to assume control of the defense thereof with counsel mutually satisfactory to the indemnifying party and the Indemnified Person or the Indemnified Party, as the case may be; provided, however, that an Indemnified Person or Indemnified
Party shall have the right to retain its own counsel with the fees and expenses of not more than one counsel for all such Indemnified Person or Indemnified Party to be paid by the indemnifying party, if, in the reasonable opinion of counsel retained
by the Indemnified Person or Indemnified Party, as applicable, the representation by such counsel of the Indemnified Person or Indemnified Party and the indemnifying party would be inappropriate due to actual or potential differing interests between
such Indemnified Person or Indemnified Party and any other party represented by such counsel in such proceeding. In the case of an Indemnified Person, legal counsel referred to in the immediately preceding sentence shall be selected by the Investors
holding at least a majority in interest of the Registrable Securities included in the Registration Statement to which the Claim relates. The Indemnified Party or Indemnified Person shall reasonably cooperate with the indemnifying party in connection
with 

  
 15 

 
any negotiation or defense of any such action or Claim by the indemnifying party and shall furnish to the indemnifying party all information reasonably available to the Indemnified Party or
Indemnified Person which relates to such action or Claim. The indemnifying party shall keep the Indemnified Party or Indemnified Person fully apprised at all times as to the status of the defense or any settlement negotiations with respect thereto.
No indemnifying party shall be liable for any settlement of any action, claim or proceeding effected without its prior written consent, provided, however, that the indemnifying party shall not unreasonably withhold, delay or condition its consent.
No indemnifying party shall, without the prior written consent of the Indemnified Party or Indemnified Person, consent to entry of any judgment or enter into any settlement or other compromise which does not include as an unconditional term thereof
the giving by the claimant or plaintiff to such Indemnified Party or Indemnified Person of a release from all liability in respect to such Claim or litigation and such settlement shall not include any admission as to fault on the part of the
Indemnified Party. Following indemnification as provided for hereunder, the indemnifying party shall be subrogated to all rights of the Indemnified Party or Indemnified Person with respect to all third parties, firms or corporations relating to the
matter for which indemnification has been made. The failure to deliver written notice to the indemnifying party within a reasonable time of the commencement of any such action shall not relieve such indemnifying party of any liability to the
Indemnified Person or Indemnified Party under this Section 6, except to the extent that the indemnifying party is prejudiced in its ability to defend such action. 

(d) The indemnification required by this Section 6 shall be made by periodic payments of the amount thereof during the course of the
investigation or defense, as and when bills are received or Indemnified Damages are incurred. 
 (e) The indemnity agreements contained
herein shall be in addition to (i) any cause of action or similar right of the Indemnified Party or Indemnified Person against the indemnifying party or others, and (ii) any liabilities the indemnifying party may be subject to pursuant to
the law. 
 7. CONTRIBUTION. 
 To the
extent any indemnification by an indemnifying party is prohibited or limited by law, the indemnifying party agrees to make the maximum contribution with respect to any amounts for which it would otherwise be liable under Section 6 to the
fullest extent permitted by law; provided, however, that: (i) no Person involved in the sale of Registrable Securities which Person is guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) in
connection with such sale shall be entitled to contribution from any Person involved in such sale of Registrable Securities who was not guilty of fraudulent misrepresentation; and (ii) contribution by any seller of Registrable Securities shall
be limited in amount to the amount of net proceeds received by such seller from the sale of such Registrable Securities pursuant to such Registration Statement. 

  
 16 

 8. REPORTS UNDER THE EXCHANGE ACT. 

With a view to making available to the Investors the benefits of Rule 144 promulgated under the Securities Act or any other similar rule or
regulation of the SEC that may at any time permit the Investors to sell securities of the Company to the public without registration (“Rule 144”), the Company agrees to: 

(a) make and keep public information available, as those terms are understood and defined in Rule 144; 

(b) file with the SEC in a timely manner all reports and other documents required of the Company under the Securities Act and the Exchange Act
so long as the Company remains subject to such requirements and the filing of such reports and other documents is required for the applicable provisions of Rule 144; and 

(c) furnish to each Investor so long as such Investor owns Registrable Securities, promptly upon request, (i) a written statement by the
Company, if true, that it has complied with the reporting requirements of Rule 144, the Securities Act and the Exchange Act, (ii) a copy of the most recent annual or quarterly report of the Company and such other reports and documents so filed
by the Company, and (iii) such other information as may be reasonably requested to permit the Investors to sell such securities pursuant to Rule 144 without registration. 

9. ASSIGNMENT OF REGISTRATION RIGHTS. 

The rights and obligations under this Agreement shall be automatically assignable by the Investors to any transferee of all or any portion of
such Investor’s Registrable Securities if: (i) the Investor agrees in writing with the transferee or assignee to assign such rights and obligations, and a copy of such agreement is furnished to the Company within a reasonable time after
such assignment; (ii) the Company is, within a reasonable time after such transfer or assignment, furnished with written notice of (a) the name and address of such transferee or assignee, (b) the securities with respect to which such
registration rights and obligations hereunder are being transferred or assigned and (c) any other information which the Company requests in order to reflect such transferee as a selling stockholder in the Registration Statement;
(iii) immediately following such transfer or assignment the further disposition of such securities by the transferee or assignee is restricted under the Securities Act or applicable state securities laws; (iv) at or before the time the
Company receives the written notice contemplated by clause (ii) of this sentence the transferee or assignee agrees in writing with the Company to be bound by all of the provisions contained herein; and (v) such transfer shall have been
made in accordance with the requirements of applicable law and the Support Agreement. 
 10. AMENDMENT OF REGISTRATION RIGHTS. 

Provisions of this Agreement may be amended and the observance thereof may be waived (either generally or in a particular instance and either
retroactively or prospectively), only with the written consent of the Company and the Required Holders; provided that any such amendment or waiver that complies with the foregoing but that disproportionately, materially and adversely affects the
rights and obligations of any Investor relative to the comparable rights and obligations of the other Investors shall require the prior written consent of such adversely affected Investor. Any amendment or waiver effected in accordance with this
Section 10 shall be binding upon each Investor and the Company. No such amendment shall be effective to the extent that it applies to less than all of the holders of the Registrable Securities. No consideration shall be offered or paid to any
Person to amend or consent to a waiver or modification of any provision of this Agreement unless the same consideration (other than the reimbursement of legal fees) also is offered to all of the parties to this Agreement. 

  
 17 

 11. MISCELLANEOUS. 

(a) Entire Agreement. This Agreement and the Support Agreements supersede all other prior oral or written agreements between the Note
Holders, the Company, their affiliates and persons acting on their behalf with respect to the matters discussed herein, and this Agreement, the Support Agreements and the instruments referenced herein and therein contain the entire understanding of
the parties with respect to the matters covered herein and therein and, except as specifically set forth herein or therein, neither the Company nor any Note Holder makes any representation, warranty, covenant or undertaking with respect to such
matters. No provision of this Agreement may be amended and the observance thereof may be waived (either generally or in a particular instance and either retroactively or prospectively) other than by an instrument in writing signed by the Company and
Required Holders. Any amendment or waiver effected in accordance with this Section 11 shall be binding upon the Note Holders and the Company. 

(b) Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties and their respective permitted
successors and assigns, including any purchasers of the Notes. The Company shall not assign this Agreement or any rights or obligations hereunder, including by way of a fundamental change, without the prior written consent of the Required Holders.
No purchaser of any of the Notes from a Note Holder shall be deemed a successor or assign by reason merely of such purchase; provided, however, that an Investor may assign some or all of its rights hereunder without the consent of the Company to any
permitted assignee, in which event such assignee shall be deemed to be an Investor hereunder with respect to such assigned rights. An Investor assigning some or all of its rights hereunder shall provide the Company notice of such assignment in
accordance with Section 9; however no assignment shall be invalid solely due to failure to comply with this notice requirement. For the avoidance of doubt, and without limiting the rights of a permitted assignee hereunder, the assignment of
this Agreement to a permitted assignee shall not relieve the Company of any obligations to a Note Holder for any fees, reimbursement of expenses, indemnification or any other payments hereunder. 

(c) No Third Party Beneficiaries. This Agreement is intended for the benefit of the parties hereto and their respective permitted
successors and assigns, and is not for the benefit of, nor may any provision hereof be enforced by, any other person, except that each Indemnified Person shall have the right to enforce the obligations of the Company with respect to Section 6.

 (d) Notices. Any notices, consents, waivers or other communications required or permitted to be given under the terms of this
Agreement must be in writing and will be deemed to have been delivered: (i) upon receipt, when delivered personally; (ii) upon transmission, when delivered by email or facsimile; or (iii) one Business Day after deposit with an
overnight courier service, in each case properly addressed to the party to receive the same. The addresses, facsimile numbers and e-mail addresses for such communications shall be: 

  
 18 

 If to the Company: 

A.M. Castle & Co. 
 1420
Kensington Road, Suite 220 
 Oak Brook, Illinois 60523 

Attention: Marec E. Edgar 

E-mail: medgar@amcastle.com 
 With
a copy (which shall not constitute notice) to: 
 Winston & Strawn LLP 

35 W. Wacker Drive 
 Chicago,
Illinois 60601 
 Attn: R. Cabell Morris 

Karen A. Weber 
 E-mail:
rmorris@winston.com 
              kweber@winston.com 

Facsimile: 312-558-5700 
 If to a
Note Holder: 
 To the individual named on the Note Holder’s signature page 

With a copy (which shall not constitute notice) to: 

Paul, Weiss, Rifkind, Wharton & Garrison LLP 

1285 Avenue of the Americas 
 New
York, NY 10019-6064 
 Attention: Andrew N. Rosenberg, Lawrence G. Wee, and Jacob A. Adlerstein 

E-mail addresses: arosenberg@paulweiss.com 

                          
           lwee@paulweiss.com 

                          
           jadlerstein@paulweiss.com 
 Any party to this Agreement may change
such address for notices by sending to the parties to this Agreement written notice of a new address for such purpose. 
 (e) Specific
Performance. The parties acknowledge that money damages are not an adequate remedy for violations of this Agreement and that any party may, in its sole discretion, apply to a court of competent jurisdiction for specific performance or injunctive
or such other relief as such court may deem just and proper in order to enforce this Agreement or prevent any violation hereof and, to the extent permitted by applicable law, each party waives any objection to the imposition of such relief, this
being in addition to any other remedy to which such party is entitled at law or in equity. 
 (f) Governing Law; Jurisdiction; Jury
Trial. All questions concerning the construction, validity, enforcement and interpretation of this Agreement shall be governed by the internal laws of the State of New York, without giving effect to any choice of law or conflict of law provision
or rule (whether of the State of New York or any other jurisdictions) that would 

  
 19 

 
cause the application of the laws of any jurisdictions other than the State of New York. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts
sitting in the City of New York, Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert
in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such suit, action or proceeding is
improper. Each party hereby irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to such party at the address for such notices to it under this Agreement
and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. EACH PARTY HEREBY
IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION CONTEMPLATED HEREBY. 

(g) Headings. The headings of this Agreement are for convenience of reference and shall not form part of, or affect the interpretation
of, this Agreement. 
 (h) Extensions; Waivers. Any party may, for itself only, (a) extend the time for the performance of any of
the obligations of any other party under this Agreement, (b) waive any inaccuracies in the representations and warranties of any other party contained herein or in any document delivered pursuant hereto and (c) waive compliance with any of
the agreements or conditions for the benefit of such party contained herein. Any such extension or waiver will be valid only if set forth in a writing signed by the party to be bound thereby. No waiver by any party of any default, misrepresentation
or breach of warranty or covenant hereunder, whether intentional or not, may be deemed to extend to any prior or subsequent default, misrepresentation or breach of warranty or covenant hereunder or affect in any way any rights arising because of any
prior or subsequent such occurrence. Neither the failure nor any delay on the part of any party to exercise any right or remedy under this Agreement shall operate as a waiver thereof, nor shall any single or partial exercise of any right or remedy
preclude any other or further exercise of the same or of any other right or remedy. 
 (i) Severability. If any provision of this
Agreement is prohibited by law or otherwise determined to be invalid or unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest
extent that it would be valid and enforceable, and the invalidity or unenforceability of such provision shall not affect the validity of the remaining provisions of this Agreement so long as this Agreement as so modified continues to express,
without material change, the original intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or
reciprocal obligations of the parties or the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable
provision(s) with a valid provision(s), the effect of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s). 

  
 20 

 (j) Counterparts. This Agreement may be executed in two or more identical counterparts,
all of which shall be considered one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party. Executed copies of the signature pages of this Agreement sent by facsimile or
transmitted electronically in Portable Document Format shall be treated as originals, fully binding and with full legal force and effect, and the parties waive any rights they may have to object to such treatment. 

(k) Rescission and Withdrawal Right. Notwithstanding anything to the contrary contained in (and without limiting any similar provisions
of) this Agreement, whenever a Note Holder exercises a right, election, demand or option under this Agreement and the Company does not timely perform its related obligations within the periods therein provided, then the Note Holder may rescind or
withdraw, in its sole discretion from time to time upon written notice to the Company, any relevant notice, demand or election in whole or in part without prejudice to its future actions and rights. 

(l) No Strict Construction. The language used in this Agreement will be deemed to be the language chosen by the parties to express their
mutual intent, and no rules of strict construction will be applied against any party. 
 (m) Further Assurances. Each party shall do
and perform, or cause to be done and performed, all such further acts and things, and shall execute and deliver all such other agreements, certificates, instruments and documents, as any other party may reasonably request in order to carry out the
intent and accomplish the purposes of this Agreement and the consummation of the transactions contemplated hereby. 
 (n) Several and not
Joint. Notwithstanding any other provision of this Agreement, the rights, duties, and obligations of each Note Holder hereunder are several and not joint, and no Note Holder shall be liable hereunder for the duties or obligations of any other
Note Holder. No Note Holder makes any representation or warranty hereunder to or for the benefit of any other Note Holder. 

[Signature Page Follows] 

  
 21 

 IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above
written. 
  

			
	COMPANY:
	
	A.M. CASTLE & CO.
		
	By:	 	  

		 	Name:
		 	Title:

 [Signature Page to Registration Rights Agreement] 

 
			
	NOTE HOLDERS:
	
	[                ]
		
	By:	 	  

		 	Name:
		 	Title:

 [Signature Page to Registration Rights Agreement]

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