Document:

Form of Medium-Term Notes

 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. 94986RZ79 
	
PRINCIPAL AMOUNT: $                   
  

 REGISTERED NO. __ 

WELLS FARGO & COMPANY 

MEDIUM-TERM NOTE, SERIES K 

Due Nine Months or More From Date of Issue 

0.25% Equity Linked Notes due November 6, 2023 

Linked to the Common Stock of Western Digital Corporation 

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 its registered assigns, an amount equal to the
Stated Maturity Payment Amount (as defined below) due with respect to the principal amount of THIRTY-FOUR MILLION DOLLARS ($34,000,000) on November 6, 2023 (the “Stated Maturity Date”), subject to postponement due to the
occurrence of a Market Disruption Event (as defined below) as set forth below under “Payment at Stated Maturity” unless the Company has exercised the Redemption Right (as defined and described below), and to pay interest on the principal
amount of this Security from November 4, 2016 or from the most recent Interest Payment Date (as defined below) to which interest has been paid or duly provided for, as the case may be, at the rate of 0.25% per annum, payable on each
Interest Payment Date. Interest shall be calculated on the basis of a year of 360 days with twelve 30-day months. The interest so payable, and punctually paid or duly provided for, on any Interest Payment
Date will, as provided in the Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date for such Interest Payment Date; provided that the
interest payable on the Stated Maturity Date shall be paid to the Person to whom the Stated Maturity Payment Amount is paid. The “Regular Record Date” for an Interest Payment Date shall be the date one Business Day (as defined
below) prior to such Interest Payment Date. The “Interest Payment Dates” shall be each May 6 and November 6, commencing May 6, 2017, and ending on the Stated Maturity Date. 

 The amount payable on this Security at Maturity will be based upon the value of
the common stock of Western Digital Corporation (the “Underlying Stock”). The issuer of the Underlying Stock is sometimes referred to herein as the “Underlying Stock Issuer.” 

Any interest not punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record
Date and may either be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee,
notice whereof shall be given to the Holder of this Security not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which
this Security may be listed, and upon such notice as may be required by such exchange, all as more fully provided in the Indenture. 

All amounts payable on this Security shall be payable 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. Payments of interest on this Security shall be payable at the office or agency of the Company maintained for such purpose in the City of Minneapolis, Minnesota and at any other
office or agency maintained by the Company for such purpose; provided, however, that at the option of the Company payment of interest may be made by check mailed to the address of the Person entitled thereto as such address shall appear in the
Security Register or by wire transfer to such account as may have been appropriately designated by such Person. Amounts payable on this Security at Maturity shall be paid against presentation of this Security at the office or agency of the Company
maintained for that purpose in the City of Minneapolis, Minnesota. Notwithstanding the foregoing, for so long as this Security is in the form of a Global Security registered in the name of the Depositary, all payments on this Security will be made
to the Depositary by wire transfer of immediately available funds. 
 Payment at Stated Maturity 

On the Stated Maturity Date, for each $1,000 principal amount of this Security, if this Security has not been previously
redeemed by the Company, the Holder of this Security shall receive an amount in cash equal to the greater of $1,000 and Parity (such amount, the “Stated Maturity Payment Amount”), as determined on the Final Determination Date (as
defined below), plus any accrued and unpaid interest. “Parity” on any Trading Day (as defined below) equals the Share Ratio (as defined below) multiplied by the Closing Price (as defined below) of the Underlying Stock, each
determined as of such Trading Day by the Calculation Agent (as defined below). “Principal amount” shall mean, when used with respect to this Security, the amount set forth on the face of this Security as its “Principal
Amount.” 
 The “Share Ratio” is 12.1957. The Share Ratio will remain constant for the term of this
Security unless adjusted for certain corporate events relating to the Underlying Stock Issuer, including changes in dividend payments. See “—Adjustment Events” below. 

The “Final Determination Date” is October 30, 2023. If the originally scheduled Final Determination Date
is not a Trading Day, the Final Determination Date will be postponed to the next succeeding Trading Day. The Final Determination Date is also subject to postponement due to the occurrence of a Market Disruption Event. 

  
 2 

 If a Market Disruption Event occurs or is continuing with respect to the
Underlying Stock on the Final Determination Date, such Final Determination Date will be postponed to the first succeeding Trading Day on which a Market Disruption Event has not occurred and is not continuing. If such first succeeding Trading Day has
not occurred as of the eighth scheduled Trading Day after the scheduled Final Determination Date, that eighth scheduled Trading Day shall be deemed the Final Determination Date. If the Final Determination Date has been postponed eight scheduled
Trading Days after the scheduled Final Determination Date and such eighth scheduled Trading Day is not a Trading Day, or if a Market Disruption Event occurs or is continuing with respect to the Underlying Stock on such eighth scheduled Trading Day,
the Calculation Agent will determine the Closing Price of the Underlying Stock on such eighth scheduled Trading Day using its good faith estimate of the Closing Price that would have prevailed for the Underlying Stock on such date. 

If a Market Disruption Event has occurred or is continuing on the Final Determination Date and such Final Determination Date
is postponed so that it falls less than three Business Days (as defined below) prior to the Stated Maturity Date, the Stated Maturity Date will be postponed to the third Business Day following the Final Determination Date as postponed. 

Redemption Right 
 The
Company may redeem this Security, in whole but not in part, for settlement on any day from and including November 6, 2019, to and including the Stated Maturity Date, for an amount in cash for each $1,000 principal amount of this Security equal
to the greater of (i) $1,000 and (ii) Parity determined by the Calculation Agent on the Trading Day prior to the Redemption Notice Date (the “Redemption Determination Date”). This right of the Company to redeem this
Security is referred to herein as the “Redemption Right.” 
 If the Company redeems this Security, the
Company will specify the Redemption Date in its notice of redemption. The “Redemption Date” will be 10 days following the day on which the Company gives its notice of redemption (the “Redemption Notice Date”),
unless the 10th day following the Redemption Notice Date is not a Business Day, in which case the Redemption Date will be the immediately following day that is a Business Day. If the Company
redeems this Security, the Holder of this Security will not receive any accrued but unpaid interest on the Redemption Date. 
 Business Day Adjustments

 If the Stated Maturity Date, any Interest Payment Date or the Redemption Date is not a Business Day, any payments due
on this Security on such day will be made on the next succeeding Business Day with the same force and effect as if made on such day and no interest on such payment will accrue from and after the Stated Maturity Date or such Interest Payment Date, as
applicable. 
 Certain Definitions 

“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. 

  
 3 

 “Calculation Agent” shall mean the Person that has entered into
the Calculation Agent Agreement with the Company, 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. 
 “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. 
 The “Closing
Price” for one share of the Underlying Stock (or one unit of any other security for which a Closing Price must be determined) on any Trading Day means: 
  

	 	•	 	 if the Underlying Stock (or any such other security) is listed or admitted to trading on a national securities
exchange, the official closing price on such day published by the principal United States securities exchange registered under the Securities Exchange Act of 1934, as amended (the “Exchange Act”), on which the Underlying Stock (or
any such other security) is listed or admitted to trading; or 

  

	 	•	 	 if the Underlying Stock (or any such other security) is not listed or admitted to trading on any national
securities exchange but is included in the OTC Bulletin Board Service (the “OTC Bulletin Board”) operated by the Financial Industry Regulatory Authority, Inc. (“FINRA”), the last reported sale price of the principal
trading session on the OTC Bulletin Board on such day. 

 If the Underlying Stock (or any such other
security) is listed or admitted to trading on any national securities exchange but the official closing price is not available pursuant to the preceding sentence, then the Closing Price for one share of the Underlying Stock (or one unit of any such
other security) on any Trading Day will mean the last reported sale price of the principal trading session on the over-the-counter market as reported on the OTC Bulletin Board on such day. 

If the official closing price or the last reported sale price, as applicable, for the Underlying Stock (or any such other
security) is not available pursuant to either of the two preceding sentences, then the Closing Price per share for any Trading Day will be the mean, as determined by the Calculation Agent, of the bid price for the Underlying Stock (or any such other
security) obtained from as many recognized dealers in such security, but not exceeding three, as will make such bid prices available to the Calculation Agent. Bids of Wells Fargo Securities, LLC or any of its affiliates may be included in the
calculation of such mean, but only to the extent that any such bid is the highest of the bids obtained. The term “OTC Bulletin Board Service” will include any successor service thereto or, if the OTC Bulletin Board Service is
discontinued and there is no successor service thereto, the OTC Reporting Facility operated by FINRA. 
 A “Market
Disruption Event” means, with respect to the Underlying Stock, the occurrence or existence of any of the following events: 
  

	 	•	 	 a suspension, absence or material limitation of trading in the Underlying Stock on its primary market for more
than two hours of trading or during the one-half hour before 

  
 4 

	 	 
the close of trading in that market, as determined by the Calculation Agent in its sole discretion; 

  

	 	•	 	 a suspension, absence or material limitation of trading in option or futures contracts relating to the
Underlying Stock, if available, in the primary market for those contracts for more than two hours of trading or during the one-half hour before the close of trading in that market, as determined by the Calculation Agent in its sole discretion;

  

	 	•	 	 the Underlying Stock does not trade on the New York Stock Exchange, the NASDAQ Global Select Market, the
NASDAQ Global Market or what was the primary market for the Underlying Stock, as determined by the Calculation Agent in its sole discretion; or 

  

	 	•	 	 any other event, if the Calculation Agent determines in its sole discretion that the event materially
interferes with the Company’s ability or the ability of any of its affiliates to unwind all or a material portion of a hedge with respect to this Security that the Company or its affiliates have effected or may effect. 

The following events will not be Market Disruption Events: 

 

	 	•	 	 a limitation on the hours or number of days of trading in the Underlying Stock in its primary market, but only
if the limitation results from an announced change in the regular business hours of the relevant market; and 

  

	 	•	 	 a decision to permanently discontinue trading in the option or futures contracts relating to the Underlying
Stock. 

 For this purpose, a “suspension, absence or material limitation of trading” in the
applicable market will not include any time when that market is itself closed for trading under ordinary circumstances. In contrast, a “suspension, absence or material limitation of trading” in the applicable market for the Underlying
Stock or option or futures contracts relating to the Underlying Stock, as applicable, by reason of any of: 
  

	 	•	 	 a price change exceeding limits set by that market; 

 

	 	•	 	 an imbalance of orders relating to the Underlying Stock or those contracts; or 

 

	 	•	 	 a disparity in bid and asked quotes relating to the Underlying Stock or those contracts 

will constitute a “suspension, absence or material limitation of trading” in the Underlying Stock or those contracts, as the case
may be, in the applicable market. 
 A “Trading Day” means a day, as determined by the Calculation Agent,
on which trading is generally conducted on the principal trading market for the Underlying Stock (as determined by the Calculation Agent, in its sole discretion), the Chicago Mercantile Exchange and the Chicago Board Options Exchange and in the
over-the-counter market for equity securities in the United States. 

  
 5 

 Calculation Agent 

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. All percentages and other amounts resulting from any calculation with respect to this Security
will be rounded at the Calculation Agent’s discretion. 
 Events of Default and Acceleration 

In case an Event of Default, as defined in the Indenture, with respect to this Security has occurred and is continuing, the
amount payable to the Holder of this Security upon any acceleration permitted by this Security, with respect to each $1,000 principal amount of this Security, will be equal to the greater of (i) $1,000 and (ii) Parity determined by the
Calculation Agent on the date of acceleration. 
 Adjustment Events 

The Share Ratio is subject to adjustment by the Calculation Agent as a result of the dilution and reorganization events
described in this section. 
 How adjustments will be made 

If one of the events described below occurs with respect to the Underlying Stock and the Calculation Agent determines that the
event has a dilutive or concentrative effect on the market price of the Underlying Stock, the Calculation Agent will calculate a corresponding adjustment to the Share Ratio as the Calculation Agent deems appropriate to account for that dilutive or
concentrative effect. For example, if an adjustment is required because of a two-for-one stock split, then the Share Ratio will be adjusted by the Calculation Agent by multiplying the existing Share Ratio by a fraction whose numerator is the number
of shares of the Underlying Stock outstanding immediately after the stock split and whose denominator is the number of shares of the Underlying Stock outstanding immediately prior to the stock split. Consequently, the Share Ratio will be adjusted to
double the prior Share Ratio, due to the corresponding decrease in the market price of the Underlying Stock. Adjustments will be made for events with an effective date or Ex-Dividend Date (as defined below), as applicable, from but excluding
October 28, 2016 to and including the Redemption Determination Date or the Final Determination Date, as applicable (the “Adjustment Period”). 

The Calculation Agent will also determine the effective date of that adjustment, and the replacement of the Underlying Stock,
if applicable, in the event of a consolidation or merger or certain other events in respect of the Underlying Stock Issuer. Upon making any such adjustment, the Calculation Agent will give notice as soon as practicable to the Trustee and the Paying
Agent, stating the adjustment to the Share Ratio. In no event, however, will an antidilution adjustment to the Share Ratio during the term of this Security be deemed to change the principal amount of this Security. 

If more than one event requiring adjustment occurs with respect to the Underlying Stock, the Calculation Agent will make an
adjustment for each event in the order in which the events occur, 

  
 6 

 
and on a cumulative basis. Thus, having made an adjustment for the first event, the Calculation Agent will adjust the Share Ratio for the second event, applying the required adjustment to the
Share Ratio as already adjusted for the first event, and so on for any subsequent events. 
 For any dilution event
described below, other than a consolidation or merger, the Calculation Agent will not have to adjust the Share Ratio unless the adjustment would result in a change to the Share Ratio then in effect of at least 0.10%. The Share Ratio resulting from
any adjustment will be rounded up or down, as appropriate, to the nearest one-hundred thousandth. 
 If an event requiring
an antidilution adjustment occurs, the Calculation Agent will make the adjustment with a view to offsetting, to the extent practical, any change in the economic position of the Holder of this Security relative to this Security that results solely
from that event. The Calculation Agent may, in its sole discretion, modify the antidilution adjustments as necessary to ensure an equitable result. 

The Calculation Agent will make all determinations with respect to antidilution adjustments, including any determination as to
whether an event requiring adjustment has occurred, as to the nature of the adjustment required and how it will be made or as to the value of any property distributed in a Reorganization Event (as defined below), and will do so in its sole
discretion. In the absence of manifest error, those determinations will be conclusive for all purposes and will be binding on the Holder of this Security and the Company, without any liability on the part of the Calculation Agent. The Holder of this
Security will not be entitled to any compensation from the Company for any loss suffered as a result of any of these determinations by the Calculation Agent. The Calculation Agent will provide information about the adjustments that it makes upon the
written request of the Holder of this Security. 
 If any of the adjustments specified below is required to be made with
respect to an amount or value of any cash or other property that is distributed by the Underlying Stock Issuer organized outside the United States, such amount or value will be converted to U.S. dollars, as applicable, and will be reduced by any
applicable foreign withholding taxes that would apply to such distribution if such distribution were paid to a U.S. person that is eligible for the benefits of an applicable income tax treaty, if any, between the United States and the jurisdiction
of organization of the Underlying Stock Issuer, as determined by the Calculation Agent, in its sole discretion. 
 No
adjustments will be made for certain other events, such as offerings of common stock by the Underlying Stock Issuer for cash or in connection with the occurrence of a partial tender or exchange offer for the Underlying Stock by the Underlying Stock
Issuer or any other person. 
 Ordinary Dividend Adjustments 

In addition to any adjustments to the Share Ratio described herein, the Share Ratio will be adjusted for changes (whether
positive or negative) in the regular quarterly cash dividend payable to holders of the Underlying Stock relative to the Base Quarterly Dividend (as defined below). If the Underlying Stock Issuer pays a regular quarterly cash dividend for which the
Ex-Dividend Date is within the Adjustment Period and the amount of such regular quarterly cash dividend (the “Current Quarterly Dividend”) differs from the Base Quarterly Dividend, the Share Ratio will be adjusted (an
“Ordinary Dividend Adjustment”) on such Ex-Dividend Date so that the new Share Ratio will equal 

  
 7 

 
the prior Share Ratio multiplied by the Ordinary Dividend Adjustment Factor. If the Underlying Stock Issuer declares that it will pay no dividend in any quarter, other than in connection with a
Payment Period Adjustment as defined and discussed below, an adjustment will be made in accordance with this paragraph on the date determined by the Calculation Agent that, but for the discontinuation of the regular quarterly cash dividend in such
quarter, would have been the Ex-Dividend Date in such quarter, corresponding to the Ex-Dividend Date in the immediately prior dividend payment period during which a regular quarterly cash dividend was paid (or, if such date is not a Trading Day, the
next day that is a Trading Day). If a Reorganization Event occurs, no Ordinary Dividend Adjustment will be made in respect of any New Stock (other than Spin-Off Stock), Successor Stock or Replacement Stock (each as defined below). 

The “Ordinary Dividend Adjustment Factor” will equal a fraction, the numerator of which is the Closing Price
of the Underlying Stock on the Trading Day preceding the Ex-Dividend Date for the payment of the Current Quarterly Dividend (such Closing Price, the “Ordinary Dividend Base Closing Price”), and the denominator of which equals the
Ordinary Dividend Base Closing Price of the Underlying Stock on the Trading Day preceding the Ex-Dividend Date minus the Dividend Differential. If the Dividend Differential is negative (because the Current Quarterly Dividend is less than the Base
Quarterly Dividend), then the Ordinary Dividend Adjustment Factor will be less than 1, and the corresponding adjustment to the Share Ratio will result in a reduction of the Share Ratio. 

The “Dividend Differential” equals the amount of the Current Quarterly Dividend minus the Base Quarterly
Dividend. 
 The “Base Quarterly Dividend” means a quarterly dividend of $0.50 per share; provided that
(i) if there occurs any corporate event with respect to the Underlying Stock that requires an adjustment to the Share Ratio as described in this section “Adjustment Events” or (ii) if the Underlying Stock Issuer effects a change
in the periodicity of its dividend payments (e.g., from quarterly payments to semi-annual payments) (a “Payment Period Adjustment”), then in each case the Calculation Agent will make an appropriate adjustment to the Base Quarterly
Dividend with a view to offsetting, to the extent practical, any change in the Holder’s economic position relative to this Security that results solely from that event, and references in this section to a quarter or a quarterly dividend shall
be deemed to refer instead to such other period or periodic dividend, as appropriate. In the event of a spin-off with respect to the Underlying Stock, the Base Quarterly Dividend for the original Underlying Stock will remain unchanged and the Base
Quarterly Dividend with respect to the spin-off stock will be $0.00 per share. 
 Stock Splits and Reverse Stock Splits 

A stock split is an increase in the number of a corporation’s outstanding shares of stock without any change in its
stockholders’ equity. Each outstanding share will be worth less as a result of a stock split. 
 A reverse stock split
is a decrease in the number of a corporation’s outstanding shares of stock without any change in its stockholders’ equity. Each outstanding share will be worth more as a result of a reverse stock split. 

  
 8 

 If the Underlying Stock is subject to a stock split or a reverse stock split,
then once the split has become effective the Calculation Agent will adjust the Share Ratio to equal the product of the prior Share Ratio and the number of shares issued in such stock split or reverse stock split with respect to one share of the
Underlying Stock. 
 Stock Dividends 

In a stock dividend, a corporation issues additional shares of its stock to all holders of its outstanding stock in proportion
to the shares they own. Each outstanding share will be worth less as a result of a stock dividend. 
 If the Underlying
Stock is subject to a stock dividend payable in shares of the Underlying Stock that is given ratably to all holders of shares of the Underlying Stock, then once the dividend has become effective the Calculation Agent will adjust the Share Ratio on
the Ex-Dividend Date to equal the sum of the prior Share Ratio and the product of: 
  

	 	•	 	 the number of shares issued with respect to one share of the Underlying Stock, and 

 

	 	•	 	 the prior Share Ratio. 

The “Ex-Dividend Date” for any dividend or other distribution is the first day on and after which the
Underlying Stock trades without the right to receive that dividend or distribution. 
 No Adjustments for Other Dividends and Distributions

 The Share Ratio will not be adjusted to reflect dividends, including cash dividends, or other distributions paid
with respect to the Underlying Stock, other than: 
  

	 	•	 	 Ordinary Dividend Adjustments described above, 

 

	 	•	 	 stock dividends described above, 

 

	 	•	 	 issuances of transferable rights and warrants as described in “ — Transferable Rights and
Warrants” below, 

  

	 	•	 	 distributions that are spin-off events described in “ — Reorganization Events” below, and

  

	 	•	 	 Extraordinary Dividends described below. 

An “Extraordinary Dividend” means each of (a) the full amount per share of the Underlying Stock of any
cash dividend or special dividend or distribution that is identified by the Underlying Stock Issuer as an extraordinary or special dividend or distribution, (b) the excess of any cash dividend or other cash distribution (that is not otherwise
identified by the Underlying Stock Issuer as an extraordinary or special dividend or distribution) distributed per share of the Underlying Stock over the immediately preceding cash dividend or other cash distribution, if any, per share of the
Underlying Stock that did not include an Extraordinary Dividend (as adjusted for any subsequent corporate event requiring an adjustment as described herein, such as a stock split or reverse stock 

  
 9 

 
split) if such excess portion of the dividend or distribution is more than 5.00% of the Closing Price of the Underlying Stock on the Trading Day preceding the Ex-Dividend Date for the payment of
such cash dividend or other cash distribution (such Closing Price, the “Extraordinary Dividend Base Closing Price”) and (c) the full cash value of any non-cash dividend or distribution per share of the Underlying Stock
(excluding Marketable Securities, as defined below). 
 If the Underlying Stock is subject to an Extraordinary Dividend,
then once the Extraordinary Dividend has become effective the Calculation Agent will adjust the Share Ratio on the Ex-Dividend Date to equal the product of: 
  

	 	•	 	 the prior Share Ratio, and 

 

	 	•	 	 a fraction, the numerator of which is the Extraordinary Dividend Base Closing Price of the Underlying Stock on
the Trading Day preceding the Ex-Dividend Date and the denominator of which is the amount by which the Extraordinary Dividend Base Closing Price of the Underlying Stock on the Trading Day preceding the Ex-Dividend Date exceeds the Extraordinary
Dividend. 

 Notwithstanding anything herein, the initiation by the Underlying Stock Issuer of an ordinary
dividend on the Underlying Stock or any announced increase in the ordinary dividend on the Underlying Stock will not constitute an Extraordinary Dividend requiring an adjustment. 

To the extent an Extraordinary Dividend is not paid in cash or is paid in a currency other than U.S. dollars, the value of the
non-cash component or non-U.S. currency will be determined by the Calculation Agent, in its sole discretion. A distribution on the Underlying Stock that is a dividend payable in shares of the Underlying Stock, an issuance of rights or warrants or a
spin-off event and also an Extraordinary Dividend will result in an adjustment to the Share Ratio only as described in “—Stock Dividends” above, “—Transferable Rights and Warrants” below or “—Reorganization
Events” below, as the case may be, and not as described here. 
 Transferable Rights and Warrants 

If the Underlying Stock Issuer issues transferable rights or warrants to all holders of the Underlying Stock to subscribe for
or purchase the Underlying Stock at an exercise price per share that is less than the Closing Price of the Underlying Stock on the Trading Day before the Ex-Dividend Date for the issuance, then the Share Ratio will be adjusted to equal the product
of: 
  

	 	•	 	 the prior Share Ratio, and 

 

	 	•	 	 a fraction, (1) the numerator of which will be the number of shares of the Underlying Stock outstanding
at the close of trading on the Trading Day before the Ex-Dividend Date (as adjusted for any subsequent event requiring an adjustment hereunder) plus the number of additional shares of the Underlying Stock offered for subscription or purchase
pursuant to the rights or warrants and (2) the denominator of which will be the number of shares of the Underlying Stock outstanding at the close of trading on the Trading Day before the Ex-Dividend Date (as adjusted for any subsequent event
requiring an adjustment hereunder) plus the number of additional shares of the 

  
 10 

	 	 
Underlying Stock (referred to herein as the “Additional Shares”) that the aggregate offering price of the total number of shares of the Underlying Stock so offered for
subscription or purchase pursuant to the rights or warrants would purchase at the Closing Price on the Trading Day before the Ex-Dividend Date for the issuance. 

The number of Additional Shares will be equal to: 
  

	 	•	 	 the product of (1) the total number of additional shares of the Underlying Stock offered for subscription
or purchase pursuant to the rights or warrants and (2) the exercise price of the rights or warrants, divided by 

  

	 	•	 	 the Closing Price of the Underlying Stock on the Trading Day before the Ex-Dividend Date for the issuance.

 If the number of shares of the Underlying Stock actually delivered in respect of the rights or warrants
differs from the number of shares of the Underlying Stock offered in respect of the rights or warrants, then the Share Ratio will promptly be readjusted to the Share Ratio that would have been in effect had the adjustment been made on the basis of
the number of shares of the Underlying Stock actually delivered in respect of the rights or warrants. 
 Reorganization Events 

Each of the following is a “Reorganization Event”: 

 

	 	•	 	 the Underlying Stock is reclassified or changed (other than in a stock split or reverse stock split),

  

	 	•	 	 the Underlying Stock Issuer has been subject to a merger, consolidation or other combination and either is not
the surviving entity or is the surviving entity but all outstanding shares of the Underlying Stock are exchanged for or converted into other property, 

  

	 	•	 	 a statutory share exchange involving outstanding shares of the Underlying Stock and the securities of another
entity occurs, other than as part of an event described above, 

  

	 	•	 	 the Underlying Stock Issuer sells or otherwise transfers its property and assets as an entirety or
substantially as an entirety to another entity, 

  

	 	•	 	 the Underlying Stock Issuer effects a spin-off, other than as part of an event described above (in a spin-off,
a corporation issues to all holders of its common stock equity securities of another issuer), or 

  

	 	•	 	 the Underlying Stock Issuer is liquidated, dissolved or wound up or is subject to a proceeding under any
applicable bankruptcy, insolvency or other similar law, or another entity completes a tender or exchange offer for all the outstanding shares of the Underlying Stock. 

  
 11 

 Adjustments for Reorganization Events 

If a Reorganization Event occurs, then the Calculation Agent will adjust the Share Ratio to reflect the amount and type of
property or properties—whether cash, securities, other property or a combination thereof—that a holder of one share of the Underlying Stock would have been entitled to receive in relation to the Reorganization Event. This new property is
referred to as the “Reorganization Property.” 
 Reorganization Property can be classified into two
categories: 
  

	 	•	 	 an equity security listed on a national securities exchange, which is generally referred to as a
“Marketable Security” and, in connection with a particular Reorganization Event, “New Stock,” which may include any tracking stock, any stock received in a spin-off (“Spin-Off Stock”) or any
Marketable Security received in exchange for the Underlying Stock; and 

  

	 	•	 	 cash and any other property, assets or securities other than Marketable Securities (including equity
securities that are not listed, that are traded over the counter or that are listed on a non-U.S. securities exchange), which is referred to as “Non-Stock Reorganization Property.” 

For the purpose of making an adjustment required by a Reorganization Event, the Calculation Agent, in its sole discretion,
will determine the value of each type of the Reorganization Property. For purposes of valuing any New Stock, the Calculation Agent will use the Closing Price of the security on the relevant Trading Day. The Calculation Agent will value Non-Stock
Reorganization Property in any manner it determines, in its sole discretion, to be appropriate. In connection with a Reorganization Event in which Reorganization Property includes New Stock, for the purpose of determining the Share Ratio for any New
Stock as described below, the term “New Stock Reorganization Ratio” means the product of (i) the number of shares of the New Stock received with respect to one share of the Underlying Stock and (ii) the Share Ratio on the
Trading Day immediately prior to the effective date of the Reorganization Event. 
 If a holder of shares of the Underlying
Stock may elect to receive different types or combinations of types of Reorganization Property in the Reorganization Event, the Reorganization Property will consist of the types and amounts of each type distributed to a holder of shares of the
Underlying Stock that makes no election, as determined by the Calculation Agent in its sole discretion. 
 If any
Reorganization Event occurs, then on and after the effective date for such Reorganization Event (or, if applicable, in the case of spinoff stock, the Ex-Dividend Date for the distribution of such spinoff stock) the term “Underlying
Stock” herein will be deemed to mean the following, and for each share of Underlying Stock, New Stock and/or Replacement Stock so deemed to constitute Underlying Stock, the Share Ratio will be equal to the applicable number indicated: 

 

	 	(a)	 if the Underlying Stock continues to be outstanding: 

 

	 	(1)	 that Underlying Stock (if applicable, as reclassified upon the issuance of

  
 12 

	 	 
any tracking stock) at the Share Ratio in effect on the Trading Day immediately prior to the effective date of the Reorganization Event; and 

 

	 	(2)	 if the Reorganization Property includes New Stock, a number of shares of New Stock equal to the New Stock
Reorganization Ratio; 

 provided that, if any Non-Stock Reorganization Property is received in
the Reorganization Event, the results of (a)(1) and (a)(2) above will each be multiplied by the “Gross-Up Multiplier,” which will be equal to a fraction, the numerator of which is the Closing Price of the Underlying Stock on the
Trading Day immediately prior to the effective date of the Reorganization Event and the denominator of which is the amount by which such Closing Price of the Underlying Stock exceeds the value of the Non-Stock Reorganization Property received per
share of Underlying Stock as determined by the Calculation Agent as of the close of trading on such Trading Day; or 
  

	 	(b)	 if the Underlying Stock is surrendered for Reorganization Property: 

 

	 	(1)	 that includes New Stock, a number of shares of New Stock equal to the New Stock Reorganization Ratio;
provided that, if any Non-Stock Reorganization Property is received in the Reorganization Event, such number will be multiplied by the Gross-Up Multiplier; or 

 

	 	(2)	 that consists exclusively of Non-Stock Reorganization Property: 

 

	 	(i)	 if the surviving entity has Marketable Securities outstanding following the Reorganization Event and either
(A) such Marketable Securities were in existence prior to such Reorganization Event or (B) such Marketable Securities were exchanged for previously outstanding Marketable Securities of the surviving entity or its predecessor
(“Predecessor Stock”) in connection with such Reorganization Event (in either case of (A) or (B), the “Successor Stock”), a number of shares of the Successor Stock determined by the Calculation Agent on the
Trading Day immediately prior to the effective date of such Reorganization Event equal to the Share Ratio in effect on the Trading Day immediately prior to the effective date of such Reorganization Event multiplied by a fraction, the numerator of
which is the value of the Non-Stock Reorganization Property per share of the Underlying Stock on such Trading Day and the denominator of which is the Closing Price of the Successor Stock on such Trading Day (or, in the case of Predecessor Stock, the
Closing Price of the Predecessor Stock multiplied by the number of shares of the Successor Stock received with respect to one share of the Predecessor Stock); or 

 

	 	(ii)	 if the surviving entity does not have Marketable Securities outstanding, or if there is no surviving entity
(in each case, a “Replacement Stock Event”), a number of shares of Replacement Stock (selected as defined below) with an 

  
 13 

	 	 
aggregate value on the effective date of such Reorganization Event equal to the value of the Non-Stock Reorganization Property multiplied by the Share Ratio in effect on the Trading Day
immediately prior to the effective date of such Reorganization Event. 

 If a Reorganization Event occurs
with respect to the shares of the Underlying Stock and the Calculation Agent adjusts the Share Ratio to reflect the Reorganization Property in the event as described above, the Calculation Agent will make further antidilution adjustments for any
later events that affect the Reorganization Property, or any component of the Reorganization Property, comprising the new Share Ratio. The Calculation Agent will do so to the same extent that it would make adjustments if the shares of the Underlying
Stock were outstanding and were affected by the same kinds of events. If a subsequent Reorganization Event affects only a particular component of the number of shares of the Underlying Stock, the required adjustment will be made with respect to that
component as if it alone were the number of shares of the Underlying Stock. 
 For purposes of adjustments for
Reorganization Events, in the case of a consummated tender or exchange offer or going-private transaction involving Reorganization Property of a particular type, Reorganization Property will be deemed to include the amount of cash or other property
paid by the offeror in the tender or exchange offer with respect to such Reorganization Property (in an amount determined on the basis of the rate of exchange in such tender or exchange offer or going-private transaction). In the event of a tender
or exchange offer or a going-private transaction with respect to Reorganization Property in which an offeree may elect to receive cash or other property, Reorganization Property will be deemed to include the kind and amount of cash and other
property received by offerees who elect to receive cash. 
 Replacement Stock Events 

Following the occurrence of a Replacement Stock Event described in paragraph (b)(2)(ii) above or in “—Delisting of
American Depositary Shares or Termination of American Depositary Receipt Facility” below, the amount of cash payable on this Security upon redemption or at Maturity will be determined by reference to a Replacement Stock and a Share Ratio
(subject to any further antidilution adjustments) for such Replacement Stock as determined in accordance with the following paragraphs. 

The “Replacement Stock” will be the stock having the closest “Option Period Volatility” to the
Underlying Stock among the stocks that then comprise the Replacement Stock Selection Index (or, if publication of such index is discontinued, any successor or substitute index selected by the Calculation Agent in its sole discretion) with the same
GICS Code (as defined below) as the Underlying Stock Issuer; provided, however, that a Replacement Stock will not include (i) any stock that is subject to a trading restriction under the trading restriction policies of the Company, the hedging
counterparties of the Company or any of their affiliates that would materially limit the ability of the Company, the hedging counterparties of the Company or any of their affiliates to hedge this Security with respect to such stock or (ii) any
stock for which the aggregate number of shares to be referenced (equal to the product of (a) the Share Ratio that would be in effect immediately after selection of such stock as the Replacement Stock and (b) the principal amount of

  
 14 

 
this Security outstanding divided by $1,000) exceeds 25% of the ADTV (as defined in Rule 100(b) of Regulation M under the Exchange Act) for such stock as of the effective date of the
Replacement Stock Event (an “Excess ADTV Stock”). 
 If a Replacement Stock is selected in connection with
a Reorganization Event, the Share Ratio with respect to such Replacement Stock will be equal to the number of shares of such Replacement Stock with an aggregate value, based on the Closing Price on the effective date of such Reorganization Event,
equal to the product of (a) the value of the Non-Stock Reorganization Property received per share of the Underlying Stock and (b) the Share Ratio in effect on the Trading Day immediately prior to the effective date of such Reorganization
Event. If Replacement Stock is selected in connection with an ADS Termination Event (as defined below), the Share Ratio with respect to such Replacement Stock will be equal to the number of shares of such Replacement Stock with an aggregate value,
based on the Closing Price on the Change Date (as defined below), equal to the product of (x) the Closing Price of the Underlying Stock on the Change Date and (y) the Share Ratio in effect on the Trading Day immediately prior to the Change
Date. 
 The “Option Period Volatility” means, in respect of any Trading Day, the volatility (calculated by
referring to the Closing Price of the Underlying Stock on its primary exchange) for a period equal to the 125 Trading Days immediately preceding the announcement date of the Reorganization Event, as determined by the Calculation Agent. 

“GICS Code” means the Global Industry Classification Standard (“GICS”) sub-industry code
assigned to the Underlying Stock Issuer; provided, however, if (i) there is no other stock in the Replacement Stock Selection Index in the same GICS sub-industry or (ii) a Replacement Stock (a) for which there is no trading
restriction and (b) that is not an Excess ADTV Stock cannot be identified from the Replacement Stock Selection Index in the same GICS sub-industry, the GICS Code will mean the GICS industry code assigned to the Underlying Stock Issuer. If no
GICS Code has been assigned to the Underlying Stock Issuer, the applicable GICS Code will be determined by the Calculation Agent to be the GICS sub-industry code assigned to companies in the same sub-industry (or, subject to the proviso in the
preceding sentence, industry, as applicable) as the Underlying Stock Issuer at the time of the relevant Replacement Stock Event. 

The “Replacement Stock Selection Index” means the S&P
500® Index. 
 Delisting of American Depositary Shares or
Termination of American Depositary Receipt Facility. If the Underlying Stock is an ADS and the Underlying Stock is no longer listed or admitted to trading on a U.S. securities exchange registered under the Exchange Act or included in the OTC
Bulletin Board Service operated by the FINRA, or if the American depositary receipt facility between the Underlying Stock Issuer and the depositary is terminated for any reason (each, an “ADS Termination Event”), then, on the last
Trading Day on which the Underlying Stock is listed or admitted to trading or the last Trading Day immediately prior to the date of such termination, as applicable (the “Change Date”), a Replacement Stock Event shall be deemed to
occur. 
  
  

  
 15 

 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] 

  
 16 

 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

  
 17 

 [Reverse of Note] 

WELLS FARGO & COMPANY 

MEDIUM-TERM NOTE, SERIES K 

Due Nine Months or More From Date of Issue 

0.25% Equity Linked Notes due November 6, 2023 

Linked to the Common Stock of Western Digital Corporation 

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. 

  
 18 

 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 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 “Principal 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 principal 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 

  
 19 

 
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 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 make the payments on this Security at the times, place and rate, and in the coin or currency or shares of the Underlying Stock, as the case may be, herein prescribed, except as otherwise
provided in this Security. 
 No Personal Recourse 

No recourse shall be had for the payment of amounts payable on this Security, 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. 

  
 20 

 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)

  
 21 

 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. 

  
 22Exhibit

Exhibit 4.1

AMENDED AND RESTATED 
CERTIFICATE OF INCORPORATION 
OF 
DMC GLOBAL INC.
Pursuant to Sections 242 and 245 of the General Corporation Law of the State of Delaware, Dynamic Materials Corporation has caused this Amended and Restated Certificate of Incorporation to be filed with the Secretary of State of the State of Delaware.  The original name of the corporation was Boom, Inc. and it was incorporated on August 15, 1997 upon filing of its Certificate of Incorporation with the Secretary of State of the State of Delaware.  This Amended and Restated Certificate of Incorporation was duly adopted by the Board of Directors and the stockholders of the corporation.
I. 
The name of this corporation is DMC Global Inc. 
II. 
The address of the registered office of the corporation in the State of Delaware is 160 Greentree Drive, Suite 101, Dover, Kent County, Delaware 19904, and the name of the registered agent of the corporation in the State of Delaware at such address is National Registered Agents, Inc. 
III. 
The purpose of this corporation is to engage in any lawful act or activity for which a corporation may be organized under the General Corporation Law of the State of Delaware. 
IV. 
A. This corporation is authorized to issue two classes of stock to be designated, respectively, "Common Stock" and "Preferred Stock." The total number of shares which the corporation is authorized to issue is twenty-nine million (29,000,000) shares. Twenty-five million (25,000,000) shares shall be Common Stock, each having a par value of five cents ($.05). Four million (4,000,000) shares shall be Preferred Stock, each having a par value of five cents ($.05). 
B. The Preferred Stock may be issued from time to time in one or more series. The Board of Directors is hereby authorized, by filing a certificate (a "Preferred Stock Designation") pursuant to the Delaware General Corporation Law, to fix or alter from time to time the designation, powers, preferences and rights of the shares of each such series and the qualifications, limitations or restrictions of any wholly unissued series of Preferred Stock, and to establish from time to time the number of shares constituting any such series or any of them; and to increase or decrease the number of shares of any series subsequent to the issuance of shares of that series, but not below the number of shares of such series then outstanding. In case the number of shares of any series shall be decreased in accordance with the foregoing sentence, the shares constituting such decrease shall resume the status that they had prior to the adoption of the resolution originally fixing the number of shares of such series. 
V. 
For the management of the business and for the conduct of the affairs of the corporation, and in further definition, limitation and regulation of the powers of the corporation, of its directors and of its stockholders or any class thereof, as the case may be, it is further provided that: 
A. 1. The management of the business and the conduct of the affairs of the corporation shall be vested in its Board of Directors. The number of directors which shall constitute the whole Board of Directors shall be fixed exclusively by one or more resolutions adopted by the Board of Directors. 
2. Subject to the rights of the holders of any series of Preferred Stock to elect additional directors under certain circumstances, each of the directors shall be elected at the annual meeting of stockholders for a term of 1 year. Notwithstanding the foregoing provisions of this Article, each director shall serve until his 

successor is duly elected and qualified or until his death, resignation or removal. No decrease in the number of directors constituting the Board of Directors shall shorten the term of any incumbent director. 
3. Subject to the rights of the holders of any series of Preferred Stock, directors may be removed from the Board of directors with or without cause. Subject to any limitations imposed by law, the Board of Directors or any individual director may be removed from office at any time by the affirmative vote of the holders of a majority of voting power of all the then-outstanding shares of voting stock of the corporation, entitled to vote at an election of directors (the "Voting Stock"). 
4. Subject to the rights of the holders of any series of Preferred Stock, any vacancies on the Board of Directors resulting from death, resignation, disqualification, removal or other causes and any newly created directorships resulting from any increase in the number of directors, shall, unless the Board of Directors determines by resolution that any such vacancies or newly created directorships shall be filled by the stockholders, except as otherwise provided by law, be filled only by the affirmative vote of a majority of the directors then in office, even though less than a quorum of the Board of Directors, and not by the stockholders. Any director elected in accordance with the preceding sentence shall hold office for the remainder of the full term of the director for which the vacancy was created or occurred and until such director's successor shall have been elected and qualified. 
B. 1. Subject to paragraph (h) of Section 43 of the Bylaws, the Bylaws may be altered or amended or new Bylaws adopted by the affirmative vote of at least sixty-six and two-thirds percent (662/3%) of the voting power of all of the then-outstanding shares of the Voting Stock. The Board of Directors shall also have the power to adopt, amend, or repeal Bylaws. 
2. The directors of the corporation need not be elected by written ballot unless the Bylaws so provide. 
3. No action shall be taken by the stockholders of the corporation except at an annual or special meeting of stockholders called in accordance with the Bylaws and no action shall be taken by the stockholders by written consent. 
4. Special meetings of the stockholders of the corporation may be called, for any purpose or purposes, by (i) the Chairman of the Board of Directors, (ii) the Chief Executive Officer, or (iii) the Board of Directors pursuant to a resolution adopted by a majority of the total number of authorized directors (whether or not there exist any vacancies in previously authorized directorships at the time any such resolution is presented to the Board of Directors for adoption). 
5. Advance notice of stockholder nominations for the election of directors and of business to be brought by stockholders before any meeting of the stockholders of the corporation shall be given in the manner provided in the Bylaws of the corporation. 
VI. 
A. A director of the corporation shall not be personally liable to the corporation or its stockholders for monetary damages for any breach of fiduciary duty as a director, except for liability (i) for any breach of the director's duty of loyalty to the corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law (iii) under Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which the director derived an improper personal benefit. If the Delaware General Corporation Law is amended after approval by the stockholders of this Article to authorize corporate action further eliminating or limiting the personal liability of directors, then the liability of a director shall be eliminated or limited to the fullest extent permitted by the Delaware General corporation Law, as so amended. 
B. Any repeal or modification of this Article VI shall be prospective and shall not affect the rights under this Article VI in effect at the time of the alleged occurrence of any act or omission to act giving rise to liability or indemnification. 
VII. 
A. The corporation shall indemnify, advance expenses, and hold harmless, to the fullest extent permitted by applicable law as it presently exists or may hereafter be amended, any person (a “Covered Person”) who was or is made or is threatened to be made a party or is otherwise involved in any action, suit, proceeding or investigation, whether civil, criminal, administrative or investigative (a “Proceeding”), by reason of the fact that he or she, or a 

Ex 4.1 - 2

person for whom he or she is the legal representative, is or was a director or officer of the corporation or, while a director or officer of the corporation, is or was serving at the request of the corporation as a director, officer, employee or agent or another corporation or of a partnership, joint venture, trust, enterprise or nonprofit entity, including service with respect to employee benefit plans, against all liability and loss suffered and expenses (including attorneys’ fees) reasonably incurred by such Covered Person.  Notwithstanding the preceding sentence, except for claims for indemnification (following the final disposition of such Proceeding) or advancement of expenses not paid in full, the corporation shall be required to indemnify a Covered Person in connection with a Proceeding (or part thereof) commenced by such Covered Person only if the commencement of such Proceeding (or part thereof) by the Covered Person was authorized in the specific case by the board of directors of the corporation.
B. Any repeal or modification of this Article VII shall not adversely affect any right or protection hereunder of any person in respect of any act or omission occurring prior to the time of such repeal or modification.
VIII. 
A. The corporation reserves the right to amend, alter, change or repeal any provision contained in this Certificate of Incorporation, in the manner now or hereafter prescribed by statute, except as provided in paragraph B. of this Article VIII, and all rights conferred upon the stockholders herein are granted subject to this reservation. 
B. Notwithstanding any other provisions of this Certificate of Incorporation or any provision of law which might otherwise permit a lesser vote or no vote, but in addition to any affirmative vote of the holders of any particular class or series of the Voting Stock required by law, this Certificate of Incorporation or any Preferred Stock Designation, the affirmative vote of the holders of at least sixty-six and two-thirds percent (662/3%) of the voting power of all of the then outstanding shares of the Voting Stock, voting together as a single class, shall be required to alter, amend or repeal Articles V, VI, VII and VIII. 

IN WITNESS WHEREOF, this Amended and Restated Certificate of Incorporation has been executed as of November 4, 2016
    	
		
	Dynamic Materials Corporation

	 
	 

	By:
	/s/ Michelle H. Shepston

	 
	Michelle H. Shepston

	 
	Chief Legal Officer

Ex 4.1 - 3

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