Document:

EX-4.1

 Exhibit 4.1 

AMENDMENT TO COMMON STOCK PURCHASE WARRANT 

This AMENDMENT (this “Amendment”) to that certain Common Stock Purchase Warrant (the “Warrant”), issued
[•], 20[•], issued by Soliton, Inc., a Delaware corporation (the “Company”), to [•] (the “Holder”), is made as of [•], 2021, by and between the Company and the Holder. Defined terms used herein
but not defined herein shall have the meanings set forth in the Warrant. 
 WHEREAS, the Company issued the Warrant representing the
right to purchase shares of Common Stock of the Company (subject to the terms of the Warrant); 
 WHEREAS, the Company and the Holder
desire to amend the Warrant; and 
 WHEREAS, Section 5(l) of the Warrant provides that the Warrant may be amended with the
written consent of the Company and the Holder. 
 NOW, THEREFORE, in consideration of the mutual covenants, terms and conditions set
forth herein, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties mutually agree as follows: 
  

	1.	 Amendments to the Warrant. As of the Effective Date, Section 3([d]) of the Warrant is hereby
amended and restated to read in its entirety as follows: 

 “([d]) Fundamental Transaction. If, at any time
while this Warrant is outstanding, (i) the Company, directly or indirectly, in one or more related transactions effects any merger or consolidation of the Company with or into another Person, (ii) the Company, directly or indirectly,
effects any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially all of its assets in one or a series of related transactions, (iii) any, direct or indirect, purchase offer, tender offer or
exchange offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to sell, tender or exchange their shares for other securities, cash or property and has been accepted by the holders of
50% or more of the outstanding Common Stock, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification, reorganization or recapitalization of the Common Stock or any compulsory share exchange
pursuant to which the Common Stock is effectively converted into or exchanged for other securities, cash or property, or (v) the Company, directly or indirectly, in one or more related transactions consummates a stock or share purchase
agreement or other business combination (including, without limitation, a reorganization, recapitalization, spin-off, merger or scheme of arrangement) with another Person (excluding solely for the purposes of
this subsection (v), any Person holding greater than 50% of the outstanding shares of Common Stock on the date hereof) or group of Persons whereby such other Person or group acquires more than 50% of the outstanding shares of Common Stock (not
including any shares of Common Stock held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making or party to, such stock or share purchase agreement or other business combination) (each a

 
“Fundamental Transaction”), then, at the election of the Company, in its sole discretion, this Warrant shall either (x) remain outstanding after such Fundamental Transaction
and shall thereafter, in lieu of the number of Warrant Shares then exercisable under this Warrant, be exercisable for the kind and number of shares of stock or other securities or assets of the Company or of the successor Entity
resulting from such Fundamental Transaction to which the Holder would have been entitled upon consummation of such Fundamental Transaction if the Holder had exercised this Warrant in full immediately prior to the time of such Fundamental
Transaction and acquired the applicable number of Warrant Shares then issuable hereunder as a result of such exercise (without taking into account any limitations or restrictions on the exercisability of this Warrant), or (y) be
cancelled automatically upon consummation of such Fundamental Transaction without any further action of the Holder in exchange solely for the right to receive a cash payment equal to (A) the aggregate amount of cash that the Holder would have
been entitled to upon consummation of such Fundamental Transaction if the Holder had exercised this Warrant in full immediately prior to the time of such Fundamental Transaction and acquired the applicable number
of Warrant Shares then issuable hereunder as a result of such exercise (without taking into account any limitations or restrictions on the exercisability of this Warrant), less (B) the amount equal to the Exercise Price
multiplied by the number of Warrant Shares then exercisable under this Warrant. 
 The Company shall cause any successor entity in a
Fundamental Transaction in which the Company is not the survivor (the “Successor Entity”) to assume in writing all of the obligations of the Company under this Warrant and the other Transaction Documents in accordance with the
provisions of this Section 3([d]) pursuant to written agreements in form and substance reasonably satisfactory to the Holder and approved by the Holder (without unreasonable delay) prior to such Fundamental Transaction. In the event that the
Company elects for this Warrant to remain outstanding following a Fundamental Transaction, the Company shall cause the Successor Entity to, at the option of the Holder, deliver to the Holder in exchange for this Warrant a security of the Successor
Entity evidenced by a written instrument substantially similar in form and substance to this Warrant which is exercisable for a corresponding number of shares of capital stock of such Successor Entity (or its parent entity) equivalent to the shares
of Common Stock acquirable and receivable upon exercise of this Warrant [(without regard to any limitations on the exercise of this Warrant)] prior to such Fundamental Transaction, and with an exercise price which applies the exercise price
hereunder to such shares of capital stock (but taking into account the relative value of the shares of Common Stock pursuant to such Fundamental Transaction and the value of such shares of capital stock, such number of shares of capital stock and
such exercise price being for the purpose of protecting the economic value of this Warrant immediately prior to the consummation of such Fundamental Transaction), and which is reasonably satisfactory in form and substance to the Holder. Upon the
occurrence of any such Fundamental Transaction, the Successor Entity shall succeed to, and be substituted for (so that from and after the date of 

  
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such Fundamental Transaction, the provisions of this Warrant and the other Transaction Documents referring to the “Company” shall refer instead to the Successor Entity), and may
exercise every right and power of the Company and shall assume all of the obligations of the Company under this Warrant and the other Transaction Documents with the same effect as if such Successor Entity had been named as the Company herein.”

  

	2.	 Miscellaneous. 

(a) Except as expressly provided herein, the Warrant remains unchanged and continues in full force and effect. This Amendment
is not an amendment of or waiver to any other provision of the Warrant not expressly referred to herein and is not to be construed as an amendment, waiver or consent to any further action by any of the parties to the Warrant except as expressly
provided for herein. 
 (b) This Amendment shall be governed by and construed in accordance with the laws of the State of
Delaware, regardless of the laws that might otherwise govern under applicable principles of conflicts of law that are not mandatorily applicable by statute and that would require the application of the laws of another jurisdiction, and the parties
irrevocably submit to (and waive immunity from) the jurisdiction of the federal and state courts located in the State of Delaware. 

(c) This Amendment shall inure to the benefit of and be binding upon each of the parties and each of their respective
successors and assigns. 
 (d) The headings in this Amendment are for reference only and do not affect the interpretation of
this Amendment. 
 (e) This Amendment may be executed in counterparts (and by different parties hereto in different
counterparts), each of which shall constitute an original, but all taken together shall constitute a single contract. Delivery of an executed counterpart of a signature page to this Amendment by facsimile or in electronic (i.e.,
“pdf” or “tif”) format shall be effective as delivery of a manually executed counterpart of this Amendment. This Amendment constitutes the entire contract among the parties with respect to the subject matter hereof and supersede
all previous agreements and understandings, oral or written, with respect thereto. 
 [SIGNATURE PAGES FOLLOW] 

  
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 IN WITNESS WHEREOF, the parties hereto have executed this Amendment to Common Stock Purchase
Warrant as of the Execution Date. 
  

			
	SOLITON, INC.

 
			
		
	By:	 	 

 
			
	Name:	 	
	Title:	 	

  

			
	[HOLDER]

 
			
		
	By:	 	 

 
			
	Name:	 	
	Title:	 	

 [Signature Page to Amendment to Common Stock Purchase Warrant]EX-10.1

 Exhibit 10.1 

AMENDMENT TO EMPLOYMENT AGREEMENT 

THIS AMENDMENT (“Amendment”) is entered into on May 8, 2021 and serves to amend the Employment Agreement entered
into by and between Soliton, Inc., a Delaware company (“Company”), and Brad Hauser (“Executive” and, together with the Company, the “Parties”), on October 30, 2020 (the
“Agreement”). All capitalized terms not defined herein shall have the meaning set forth in the Agreement. 
 WHEREAS, on
the date hereof, AbbVie Inc., a Delaware company (“Parent”), the Company, and Scout Merger Sub, Inc., a Delaware company and a wholly owned Subsidiary of Parent (“Merger Sub”), entered into an Agreement and Plan of
Merger dated as of May 8, 2021 (as amended, restated, supplemented or modified from time to time, the “Merger Agreement”); 

WHEREAS, while Executive has been employed by the Company for less than seven (7) months, during such time, he has been instrumental in
securing a favorable transaction for the Company and its shareholders; 
 WHEREAS, as a result of the short amount of time Executive has
been employed by the Company, Executive’s “base amount” for purposes of Section 280G of the Internal Revenue Code of 1986, as amended (the “Code”), would result in him being subject to adverse tax consequences as
compared to other members of management and the Company’s shareholders; 
 WHEREAS, as a result of the circumstances described in the
preceding paragraphs, the Parties desire to enter into this Amendment to amend the Agreement to include a limited tax-gross up for any excise taxes incurred under Section 4999 of the Code. 

NOW, THEREFORE, in consideration of the promises and the mutual covenants herein contained, the receipt and sufficiency of which are hereby
acknowledged, the Parties, intending to be legally bound, agree as follows. 
  

	1.	 A new Section 20 shall be added directly following Section 19 of the Agreement which shall read as
follows: 

 “20. Tax Gross Up Provisions. 

(a) If any payment made, or benefit provided, to or on behalf of Executive pursuant to this Agreement or otherwise
(collectively, the “Payments”) results in Executive being subject to the excise tax imposed by Section 4999 of the Code (or any successor or similar provision) (the “4999 Excise Tax”), then the Company shall
pay Executive an additional amount (the “4999 Gross-Up Payment”), subject to the limitations set forth in Section 20(c), such that, to the greatest extent possible given the limitations
set forth in Section 20(c), the net amount retained by Executive, after deduction of the 4999 Excise Tax and any interest charges or penalties in respect of the imposition of such 4999 Excise Tax on the Payments, and any federal, state and
local income tax, employment tax and 4999 Excise Tax imposed upon the 4999 Gross-Up 

 
Payment provided for by this Section 20, shall be equal to the net amount of the Payments as if the 4999 Excise Tax was not applicable to the Payments. The 4999 Gross-Up Payment shall be paid to or for Executive’s benefit no later than fifteen (15) business days prior to the date by which Executive is required to pay the 4999 Excise Tax or any portion thereof to
any federal, state or local taxing authority, without regard to extensions. 
 (b) For purposes of determining the amount of
the 4999 Gross-Up Payment, Executive shall be deemed to pay federal income taxes at the highest marginal rate of federal income taxation in the calendar year in which the 4999
Gross-Up Payment is made and state and local income taxes at the highest marginal rate of taxation in the state and locality of Executive’s residence in the calendar year in which the 4999 Gross-Up Payment is made, net of the maximum reduction in federal income taxes, if any, which could be obtained from deduction of such state and local taxes. For the avoidance of doubt, the intent of the 4999 Gross-Up Payment is solely to make the imposition of the 4999 Excise Tax tax-neutral for Executive. 

(c) Notwithstanding anything herein to the contrary, in no event shall the amount of the 4999
Gross-Up Payment exceed $250,000. 
 (d) In the event the Closing, as such term is
defined in the Merger Agreement, has not occurred by December 31, 2022, this Amendment shall automatically expire and have no force or effect. 
  

	2.	 The Parties hereto acknowledge and agree that the Agreement, as amended by this Amendment, shall remain in full
force and effect and, except as specifically stated herein, is otherwise unmodified and that this Amendment does not alter, amend, modify or affect any other agreement between the Parties. Any reference in the Agreement to “this Agreement”
shall be deemed to mean “the Agreement as amended by this Amendment.” 

 IN WITNESS WHEREOF, the Parties hereto have duly executed this Amendment to the Agreement as of the date
written above. 
  

			
	SOLITON, INC.

			
		
	By:	 	/s/ Lori Bisson

			
	Name:	 	Lori Bisson

			
	Title:	 	Executive Vice President and Chief Financial Officer

  

			
	BRAD HAUSER
		
	By:	 	/s/ Brad Hauser

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